XML 59 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summary of Significant Accounting Policies - Narrative (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Line Items]      
Restricted cash $ 2,200,000us-gaap_RestrictedCashAndCashEquivalents $ 0us-gaap_RestrictedCashAndCashEquivalents  
Depreciation 8,800,000us-gaap_Depreciation 9,400,000us-gaap_Depreciation 7,500,000us-gaap_Depreciation
Non-income based taxes included in revenue $ 7,100,000us-gaap_ExciseAndSalesTaxes $ 10,300,000us-gaap_ExciseAndSalesTaxes $ 13,800,000us-gaap_ExciseAndSalesTaxes
Building | Minimum      
Accounting Policies [Line Items]      
Useful lives 10 years    
Building | Maximum      
Accounting Policies [Line Items]      
Useful lives 20 years    
Machinery and equipment | Minimum      
Accounting Policies [Line Items]      
Useful lives 5 years    
Machinery and equipment | Maximum      
Accounting Policies [Line Items]      
Useful lives 10 years