Annual report pursuant to Section 13 and 15(d)

Acquisitions (Narrative) (Details)

v2.4.1.9
Acquisitions (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Aug. 08, 2014
Nov. 15, 2014
Jul. 31, 2014
Dec. 31, 2012
Dec. 31, 2014
Dec. 31, 2011
Oct. 15, 2014
Business Acquisition [Line Items]                                    
Revenues $ 264,950us-gaap_Revenues $ 223,732us-gaap_Revenues $ 220,753us-gaap_Revenues $ 211,818us-gaap_Revenues $ 211,453us-gaap_Revenues $ 200,489us-gaap_Revenues $ 193,869us-gaap_Revenues $ 187,305us-gaap_Revenues $ 921,253us-gaap_Revenues $ 793,116us-gaap_Revenues $ 650,111us-gaap_Revenues              
Net income (loss)                 33,352us-gaap_ProfitLoss (522)us-gaap_ProfitLoss (16,354)us-gaap_ProfitLoss              
Acquisition-related expense                 2,342us-gaap_BusinessCombinationAcquisitionRelatedCosts 0us-gaap_BusinessCombinationAcquisitionRelatedCosts 0us-gaap_BusinessCombinationAcquisitionRelatedCosts              
Non-recurring income tax benefit eliminated from the pro forma results                 21,238lts_IncomeTaxExpenseBenefitEliminatedfromProFormaResults                  
Earn-out at fair value 3,212lts_BusinessCombinationContingentConsiderationEarnoutatFairValue       589lts_BusinessCombinationContingentConsiderationEarnoutatFairValue       3,212lts_BusinessCombinationContingentConsiderationEarnoutatFairValue 589lts_BusinessCombinationContingentConsiderationEarnoutatFairValue 812lts_BusinessCombinationContingentConsiderationEarnoutatFairValue       812lts_BusinessCombinationContingentConsiderationEarnoutatFairValue 3,212lts_BusinessCombinationContingentConsiderationEarnoutatFairValue 7,111lts_BusinessCombinationContingentConsiderationEarnoutatFairValue  
Goodwill 115,238us-gaap_Goodwill       90,501us-gaap_Goodwill       115,238us-gaap_Goodwill 90,501us-gaap_Goodwill 90,578us-gaap_Goodwill       90,578us-gaap_Goodwill 115,238us-gaap_Goodwill    
Change in fair value of contingent consideration                 (12)lts_BusinessCombinationContingentConsiderationIncreaseDecreaseEarnoutatFairValue 121lts_BusinessCombinationContingentConsiderationIncreaseDecreaseEarnoutatFairValue (7,111)lts_BusinessCombinationContingentConsiderationIncreaseDecreaseEarnoutatFairValue              
Securities America                                    
Business Acquisition [Line Items]                                    
Change in fair value of contingent consideration                     (7,111)lts_BusinessCombinationContingentConsiderationIncreaseDecreaseEarnoutatFairValue
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
             
KMS                                    
Business Acquisition [Line Items]                                    
Consideration transferred                       24,560us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Cash paid in acquisition                       11,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Notes payable-long term                                   600us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
Stock issued in acquisition, shares                       1,440,922us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Periodic payment, principal and interest                       7,508lts_DebtInstrumentPeriodicPaymentPrincipalandInterest
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Imputed interest rate                       5.50%lts_DebtInstrumentImputedInterestRate
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Stock issued in acquisition, value                       6,052us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Acquisition related costs                       1,168us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
           
Goodwill                                   13,269us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
KMS | Promissory Notes | One Point Eight Four Percent Promissory Notes [Member]                                    
Business Acquisition [Line Items]                                    
Notes payable-long term                       8,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
/ us-gaap_DebtInstrumentAxis
= lts_OnePointEightFourPercentPromissoryNotesMember
/ us-gaap_LongtermDebtTypeAxis
= lts_PromissoryNotesMember
           
Term                       4 years 4 years          
Interest rate, stated percentage                       1.84%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
/ us-gaap_DebtInstrumentAxis
= lts_OnePointEightFourPercentPromissoryNotesMember
/ us-gaap_LongtermDebtTypeAxis
= lts_PromissoryNotesMember
1.84%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= lts_KMSFinancialServicesInc.KMSMember
/ us-gaap_DebtInstrumentAxis
= lts_OnePointEightFourPercentPromissoryNotesMember
/ us-gaap_LongtermDebtTypeAxis
= lts_PromissoryNotesMember
         
HCHC Holdings, Inc.                                    
Business Acquisition [Line Items]                                    
Consideration transferred                           11,566us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
       
Cash paid in acquisition                           3,613us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
       
Notes payable-long term                           7,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
       
Extinguishment of debt                           21,834us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
       
Goodwill                           11,515us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
       
HCHC Holdings, Inc. | Operating Expenses                                    
Business Acquisition [Line Items]                                    
Acquisition related costs 566us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
              566us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
            566us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
   
HCHC Holdings, Inc. | Common Stock                                    
Business Acquisition [Line Items]                                    
Stock issued in acquisition, shares                           2,540,762us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Stock issued in acquisition, value                           7,953us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
HCHC and KMS [Member]                                    
Business Acquisition [Line Items]                                    
Revenues                 46,004us-gaap_Revenues
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsIncandKMSFinancialServicesMember
                 
Net income (loss)                 59us-gaap_ProfitLoss
/ us-gaap_BusinessAcquisitionAxis
= lts_HCHCHoldingsIncandKMSFinancialServicesMember
                 
Acquisition By Subsidiary                                    
Business Acquisition [Line Items]                                    
Consideration transferred                             1,364us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= lts_AcquisitionBySubsidiaryMember
     
Cash paid in acquisition                             552us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= lts_AcquisitionBySubsidiaryMember
     
Earn-out at fair value                     812lts_BusinessCombinationContingentConsiderationEarnoutatFairValue
/ us-gaap_BusinessAcquisitionAxis
= lts_AcquisitionBySubsidiaryMember
      812lts_BusinessCombinationContingentConsiderationEarnoutatFairValue
/ us-gaap_BusinessAcquisitionAxis
= lts_AcquisitionBySubsidiaryMember
     
Earn out period                             4 years      
Sunset Financial Services | Securities America                                    
Business Acquisition [Line Items]                                    
Consideration transferred                               4,380us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
   
Cash paid in acquisition                               1,621us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
   
Earn-out at fair value 2,759lts_BusinessCombinationContingentConsiderationEarnoutatFairValue
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
              2,759lts_BusinessCombinationContingentConsiderationEarnoutatFairValue
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
            2,759lts_BusinessCombinationContingentConsiderationEarnoutatFairValue
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
   
Intangible assets 4,359us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
              4,359us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
            4,359us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
   
Goodwill $ 21us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
              $ 21us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember
            $ 21us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= lts_SunsetFinancialServicesMember
/ dei_LegalEntityAxis
= lts_SecuritiesAmericaFinancialCorporationMember