Quarterly report pursuant to Section 13 or 15(d)

9. Fair Value Measurements - Schedule of Fair Value of Level 3 Inputs to Warrants (Details)

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9. Fair Value Measurements - Schedule of Fair Value of Level 3 Inputs to Warrants (Details) - Level 3 [Member] - Warrants [Member]
$ in Thousands
6 Months Ended
Jun. 30, 2017
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning Balance $ 651
Exercised warrants (178)
Adjustments to fair value for the period (473)
Ending Balance $ 0