Quarterly report pursuant to Section 13 or 15(d)

Equity Method Investments in Affiliate - Additional Information (Detail)

v3.4.0.3
Equity Method Investments in Affiliate - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]    
Income (loss) from equity method investments in affiliates $ 270 $ (53)
Strong Upwind Holdings LLC [Member]    
Schedule of Equity Method Investments [Line Items]    
Income (loss) from equity method investments in affiliates $ 300 $ (100)