Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement (Details)

v3.8.0.1
Fair Value Measurement (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance $ 130 $ 20
Change in fair value of warrant liability 19 (118)
Warrant modification expense 0 770
Ending balance 149 672
Contingent Consideration [Member]    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance 0 1,816
Change in fair value of warrant liability 0 34
Payments of contingent consideration 0 (1,350)
Ending balance $ 0 $ 500