Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Unaudited) (Quarterly Financial Data) (Detail)

v2.4.1.9
Quarterly Financial Data (Unaudited) (Quarterly Financial Data) (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 12 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
Quarterly Financial Information Disclosure [Abstract]                      
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
Expenses 262,920us-gaap_CostsAndExpenses [1] 224,303us-gaap_CostsAndExpenses [1] 217,063us-gaap_CostsAndExpenses [1] 206,973us-gaap_CostsAndExpenses [1] 207,733us-gaap_CostsAndExpenses [2] 197,531us-gaap_CostsAndExpenses [2] 198,645us-gaap_CostsAndExpenses [2] 186,682us-gaap_CostsAndExpenses [2]      
Income (loss) before item shown below 2,030us-gaap_OperatingIncomeLoss (571)us-gaap_OperatingIncomeLoss 3,690us-gaap_OperatingIncomeLoss 4,845us-gaap_OperatingIncomeLoss 3,720us-gaap_OperatingIncomeLoss 2,958us-gaap_OperatingIncomeLoss (4,776)us-gaap_OperatingIncomeLoss 623us-gaap_OperatingIncomeLoss 9,994us-gaap_OperatingIncomeLoss 2,525us-gaap_OperatingIncomeLoss (22,003)us-gaap_OperatingIncomeLoss
Change in fair value of contingent consideration 0lts_IncreaseDecreaseInFairValueOfContingentConsideration 0lts_IncreaseDecreaseInFairValueOfContingentConsideration 0lts_IncreaseDecreaseInFairValueOfContingentConsideration 12lts_IncreaseDecreaseInFairValueOfContingentConsideration 0lts_IncreaseDecreaseInFairValueOfContingentConsideration 0lts_IncreaseDecreaseInFairValueOfContingentConsideration (144)lts_IncreaseDecreaseInFairValueOfContingentConsideration 23lts_IncreaseDecreaseInFairValueOfContingentConsideration 12lts_IncreaseDecreaseInFairValueOfContingentConsideration (121)lts_IncreaseDecreaseInFairValueOfContingentConsideration 7,111lts_IncreaseDecreaseInFairValueOfContingentConsideration
Income (loss) before income taxes 2,030us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (571)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 3,690us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 4,857us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 3,720us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 2,958us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (4,920)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 646us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 10,006us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 2,404us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments (14,892)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Net income 10,427us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest [3] 15,738us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest [3],[4] 2,923us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 4,264us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 2,512us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 2,379us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest (5,536)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 123us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest      
Loss attributable to noncontrolling interest 19us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 20us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 21us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 21us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 19us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 23us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 13us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 13us-gaap_NetIncomeLossAttributableToNoncontrollingInterest (81)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest (68)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income (loss) attributable to the Company 10,446us-gaap_NetIncomeLoss [3] 15,758us-gaap_NetIncomeLoss [3],[4] 2,944us-gaap_NetIncomeLoss 4,285us-gaap_NetIncomeLoss 2,531us-gaap_NetIncomeLoss 2,402us-gaap_NetIncomeLoss (5,523)us-gaap_NetIncomeLoss 136us-gaap_NetIncomeLoss 33,433us-gaap_NetIncomeLoss (454)us-gaap_NetIncomeLoss (16,354)us-gaap_NetIncomeLoss
Dividends declared on preferred stock (5,461)us-gaap_PreferredStockDividendsIncomeStatementImpact (4,848)us-gaap_PreferredStockDividendsIncomeStatementImpact (3,710)us-gaap_PreferredStockDividendsIncomeStatementImpact (3,225)us-gaap_PreferredStockDividendsIncomeStatementImpact (3,004)us-gaap_PreferredStockDividendsIncomeStatementImpact (2,879)us-gaap_PreferredStockDividendsIncomeStatementImpact (1,028)us-gaap_PreferredStockDividendsIncomeStatementImpact 0us-gaap_PreferredStockDividendsIncomeStatementImpact (17,244)us-gaap_PreferredStockDividendsIncomeStatementImpact (6,911)us-gaap_PreferredStockDividendsIncomeStatementImpact 0us-gaap_PreferredStockDividendsIncomeStatementImpact
Net income (loss) available to common shareholders $ 4,985us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic [3] $ 10,910us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic [3],[4] $ (766)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 1,060us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (473)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (477)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (6,551)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 136us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 16,189us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (7,365)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ (16,354)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Earnings Per Share, Basic and Diluted         $ 0.00us-gaap_EarningsPerShareBasicAndDiluted $ 0.00us-gaap_EarningsPerShareBasicAndDiluted $ (0.04)us-gaap_EarningsPerShareBasicAndDiluted $ 0.00us-gaap_EarningsPerShareBasicAndDiluted      
Basic income (loss) per common share $ 0.03us-gaap_EarningsPerShareBasic [5] $ 0.06us-gaap_EarningsPerShareBasic [5] $ 0.00us-gaap_EarningsPerShareBasic [5] $ 0.01us-gaap_EarningsPerShareBasic [5]         $ 0.09us-gaap_EarningsPerShareBasic $ (0.04)us-gaap_EarningsPerShareBasic $ (0.09)us-gaap_EarningsPerShareBasic
Diluted income (loss) per common share $ 0.02us-gaap_EarningsPerShareDiluted $ 0.05us-gaap_EarningsPerShareDiluted $ 0.00us-gaap_EarningsPerShareDiluted $ 0.01us-gaap_EarningsPerShareDiluted         $ 0.08us-gaap_EarningsPerShareDiluted $ (0.04)us-gaap_EarningsPerShareDiluted $ (0.09)us-gaap_EarningsPerShareDiluted
Basic weighted average common shares 184,805,171us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 182,988,516us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 181,739,505us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 181,502,068us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 180,513,628us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 181,759,305us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 183,488,108us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 183,459,124us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 182,768,494us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 182,295,476us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 183,572,582us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted weighted average common shares 210,297,301us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 210,535,372us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 181,739,505us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 202,332,855us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 180,513,628us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 181,759,305us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 183,488,108us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 188,458,448us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 206,512,437us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 182,295,476us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 183,572,582us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
[1] Includes a $1,927, $2,083, $3,679 and $2,852 charge for non-cash compensation in the first, second, third and fourth quarters of 2014 respectively.
[2] Includes a $1,413, $1,380, $1,647 and $2,326 charge for non-cash compensation in the first, second, third and fourth quarters of 2013, respectively.
[3] Includes deferred income tax benefit from reversal of valuation allowance of $17,255, $0.08 per share diluted (3rd quarter) and $5,575, $0.03 per share diluted (4th quarter) (see Note 11).
[4] Reflects retrospective increase of $2,955 to reflect measurement period adjustments of preliminary allocations of the purchase price related to the Highland acquisition which were finalized in the fourth quarter of 2014.
[5] Due to rounding, the sum of the quarters' basic income (loss) per common share amounts do not equal the full fiscal year amount.