Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details)

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Fair Value Measurements - Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Beginning Balance $ 2,054
Payments (232)
Accretion 248
Cancellation of Obligation/Conversions
Mark to Market Adjustment 259
Ending Balance 2,329
Underwriter Warrants [Member]  
Beginning Balance 473
Payments
Accretion
Cancellation of Obligation/Conversions
Mark to Market Adjustment 259
Ending Balance 732
Asuragen [Member]  
Beginning Balance 1,581
Payments (232)
Accretion 248
Cancellation of Obligation/Conversions
Mark to Market Adjustment
Ending Balance $ 1,597