XML 49 R39.htm IDEA: XBRL DOCUMENT v3.19.2
Debt - Principal Maturities of Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]    
2019 $ 0  
2020 4,999  
Principal balance outstanding 4,999  
less: unamortized discount and debt issuance costs (140)  
Long-term debt 4,859 $ 4,925
Current portion 4,859 0
Noncurrent portion $ 0 $ 4,925