XML 56 R46.htm IDEA: XBRL DOCUMENT v3.5.0.2
Information Pertaining to 2022 Notes (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2016
USD ($)
Debt Instrument [Line Items]  
Beginning balance $ 14,341
Amortization of debt discount 2,119
Amortization of debt issue costs 85
Ending balance 16,545
Principal Amount of Convertible Notes  
Debt Instrument [Line Items]  
Beginning balance 22,400
Ending balance 22,400
Debt Discount  
Debt Instrument [Line Items]  
Beginning balance (7,764)
Amortization of debt discount 2,119
Ending balance (5,645)
Debt Issue Costs  
Debt Instrument [Line Items]  
Beginning balance (295)
Amortization of debt issue costs 85
Ending balance $ (210)