Fair Value Measurements - Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Beginning Balance	$ 2,054
Payments	(307)	[1]
Accretion	331
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market	1,410
Ending Balance	3,488
Underwriter Warrants[Member]
Beginning Balance	473
Payments		[1]
Accretion
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market	(112)
Ending Balance	361
Asuragen [Member]
Beginning Balance	1,581
Payments	(307)	[1]
Accretion	331
Cancellation of Obligation/Conversions Exercises
Adjustment to fair value/Mark to Market	1,522
Ending Balance	$ 3,127

[1] Royalty payments of $307,000 are reflected within Cash Flows from Operations.