Other Liabilities - Summary of Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary Of Other Liabilities [Abstract]
Derivative liability		$ 11
Other current liabilities	29,512	33,751
Total other current liabilities	29,512	33,762
Other non-current liabilities	24,309	25,535
Accrued warranty reserve	1,605	1,608
Total other non-current liabilities	25,914	27,143
Total of other liabilities	$ 55,426	$ 60,905