Acquisition and Investment - PM Group Acquisition - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail)
€ in Thousands, $ in Thousands
Dec. 31, 2015
USD ($)
Jan. 15, 2015
USD ($)
Jan. 15, 2015
EUR (€)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Business Acquisition [Line Items]          
Goodwill $ 80,089 $ 30,173   $ 52,666 $ 22,489
PM Group [Member]          
Business Acquisition [Line Items]          
Cash   6,965 € 5,994    
Trade receivables   22,215 18,795    
Inventory   23,743 20,088    
Other receivables and prepaid expenses   4,428 3,746    
Total fixed assets   16,952 14,342    
Goodwill   30,173 25,528    
Adjustments to deferred tax assets to reflect corrected value   10,867 9,195    
Other long term assets   1,497 1,267    
Accounts payable   (26,026) (22,020)    
Accrued expenses   (8,679) (7,343)    
Other current liabilities   (1,404) (1,188)    
Deferred tax liability   (13,705) (11,595)    
Other long term liabilities   (3,514) (2,973)    
Assumed non-recourse debt   (61,853) (52,332)    
Net assets acquired   30,436 25,852    
PM Group [Member] | Customer Relationships [Member]          
Business Acquisition [Line Items]          
Intangible assets   12,813 10,841    
PM Group [Member] | Trade Names and Trademarks [Member]          
Business Acquisition [Line Items]          
Intangible assets   6,914 5,850    
PM Group [Member] | Patented & Unpatented Technology [Member]          
Business Acquisition [Line Items]          
Intangible assets   $ 9,050 € 7,657