Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Income Taxes (Income Taxes Components) (Details)

v2.4.1.9

Income Taxes (Income Taxes Components) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current Income Tax Expense (Benefit)	$ 2,107us-gaap_CurrentIncomeTaxExpenseBenefit	$ 1,895us-gaap_CurrentIncomeTaxExpenseBenefit	$ 514us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred Tax Expense (Benefit)	(25,521)us-gaap_DeferredIncomeTaxExpenseBenefit	954us-gaap_DeferredIncomeTaxExpenseBenefit	877us-gaap_DeferredIncomeTaxExpenseBenefit
Benefit applied to reduce goodwill	68lts_BenefitAppliedToReduceGoodwill	77lts_BenefitAppliedToReduceGoodwill	71lts_BenefitAppliedToReduceGoodwill
Income tax expense (benefit)	(23,346)us-gaap_IncomeTaxExpenseBenefit	2,926us-gaap_IncomeTaxExpenseBenefit	1,462us-gaap_IncomeTaxExpenseBenefit
Federal [Member]
Current Federal Tax Expense (Benefit)	947	403	0
Deferred Federal Income Tax Expense (Benefit)	(21,012)	731	527
Benefit applied to reduce goodwill	0	0	0
Income tax expense (benefit)	(20,065)	1,134	527
State and Local [Member]
Current State and Local Tax Expense (Benefit)	1,160	1,492	514
Deferred State and Local Income Tax Expense (Benefit)	(4,509)	223	350
Benefit applied to reduce goodwill	68	77	71
Income tax expense (benefit)	$ (3,281)	$ 1,792	$ 935

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