Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Narrative) (Detail)

v2.4.1.9
Goodwill (Narrative) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Business Combination Segment Allocation [Line Items]  
Goodwill, impairment loss $ 19us-gaap_GoodwillImpairmentLoss
Goodwill, period increase 717us-gaap_GoodwillPeriodIncreaseDecrease
Highland Capital Brokerage, Inc. (Highland)  
Business Combination Segment Allocation [Line Items]  
Goodwill, period increase $ 717us-gaap_GoodwillPeriodIncreaseDecrease
/ us-gaap_BusinessAcquisitionAxis
= lts_HighlandCapitalBrokerageInc.HighlandMember