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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Abstract]        
Depreciation   $ 4,800,000us-gaap_Depreciation $ 5,400,000us-gaap_Depreciation $ 4,300,000us-gaap_Depreciation
Amortization expense of capitalized software   3,800,000laws_AmortizationOfCapitalizedSoftware 3,500,000laws_AmortizationOfCapitalizedSoftware 2,800,000laws_AmortizationOfCapitalizedSoftware
Goodwill impairment   0us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss 28,306,000us-gaap_GoodwillImpairmentLoss
Treasury stock, shares acquired   2,256us-gaap_TreasuryStockSharesAcquired 2,691us-gaap_TreasuryStockSharesAcquired 2,474us-gaap_TreasuryStockSharesAcquired
Property, Plant and Equipment [Line Items]        
Asset Impairment Charges $ (2,900,000)us-gaap_AssetImpairmentCharges $ (3,046,000)us-gaap_AssetImpairmentCharges $ 0us-gaap_AssetImpairmentCharges $ 0us-gaap_AssetImpairmentCharges
Buildings and improvements | Minimum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   20 years    
Buildings and improvements | Maximum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   30 years    
Machinery and equipment, furniture and fixtures, and vehicles | Minimum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   3 years    
Machinery and equipment, furniture and fixtures, and vehicles | Maximum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   10 years    
Capitalized software | Minimum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   3 years    
Capitalized software | Maximum        
Property, Plant and Equipment [Line Items]        
Property, plant and equipment, useful life   5 years