XML 32 R21.htm IDEA: XBRL DOCUMENT v3.3.1.900
Long-Term Debt - Future Principal Payments (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Debt Disclosure [Abstract]  
2016 (remaining six months ending June 30, 2016) $ 6,879
2016 7,933
Long-term debt, gross $ 14,812