XML 78 R67.htm IDEA: XBRL DOCUMENT v3.5.0.2
Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]      
Total principal amount $ 148,176   $ 143,250
Less: unamortized discount and issuance costs (10,004)   (13,821)
Total long-term debt 138,172   129,429
Senior Notes [Member]      
Debt Instrument [Line Items]      
Total principal amount 40,250   40,250
Total long-term debt 39,392   39,231
Convertible Senior Notes [Member]      
Debt Instrument [Line Items]      
Total principal amount 89,990   103,000
Less: unamortized discount and issuance costs   $ 1,591  
Total long-term debt 81,170   $ 90,198
4% Promissory Note [Member]      
Debt Instrument [Line Items]      
Total principal amount 8,936    
Total long-term debt 8,771    
3.75% Promissory Note [Member]      
Debt Instrument [Line Items]      
Total principal amount 9,000    
Total long-term debt $ 8,839