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)

v3.19.1
Fair Value Measurements - Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Beginning Balance $ 3,488
Payments (120)
Accretion 129
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market (3)
Ending Balance 3,494
Underwriter Warrants[Member]  
Beginning Balance 361
Payments
Accretion
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market (3)
Ending Balance 358
Asuragen [Member]  
Beginning Balance 3,127
Payments (120)
Accretion 129
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market
Ending Balance $ 3,136