Acquisition and Investment - PM Group Acquisition - Schedule of Fair Values of Assets Acquired and Liabilities Assumed Debt (Detail) - Jan. 15, 2015 - PM Group [Member]
€ in Thousands, $ in Thousands
USD ($)
EUR (€)
Business Acquisition [Line Items]    
Total assumed non-recourse debt $ 60,358 € 51,067
Debt issuance costs (1,495) (1,265)
Interest Rate Swap Contracts [Member]    
Business Acquisition [Line Items]    
Total assumed non-recourse debt 2,033 1,720
Working Capital [Member]    
Business Acquisition [Line Items]    
Total assumed non-recourse debt - Working Capital 22,252 18,827
Term Debt [Member] | Interest Bearing [Member]    
Business Acquisition [Line Items]    
Total assumed non-recourse debt 27,133 22,956
Term Debt [Member] | Non Interest Bearing Promissory Note    
Business Acquisition [Line Items]    
Total assumed non-recourse debt 12,161 10,289
Term Debt [Member] | Fair Market Adjustment for Non-interest Bearing Debt [Member]    
Business Acquisition [Line Items]    
Total assumed non-recourse debt $ (1,726) € (1,460)