Fair Value Measurements - Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Beginning Balance	$ 7,514
Initial Liability	2,877
Payments	(25)
Accretion	81
Cancellation of Obligation / Conversions	(7,490)
Mark to Market	137
Ending Balance	3,094
Prefunded Warrants [Member]
Beginning Balance
Initial Liability	2,247
Payments
Accretion
Cancellation of Obligation / Conversions	(1,252)
Mark to Market	66
Ending Balance	1,061
Underwriter Warrants[Member]
Beginning Balance
Initial Liability	422
Payments
Accretion
Cancellation of Obligation / Conversions
Mark to Market	10
Ending Balance	432
Asuragen [Member]
Beginning Balance	1,545
Initial Liability
Payments	(25)
Accretion	81
Cancellation of Obligation / Conversions
Mark to Market
Ending Balance	1,601
RedPath [Member]
Beginning Balance	5,969
Initial Liability
Payments
Accretion
Cancellation of Obligation / Conversions	(5,969)
Mark to Market
Ending Balance
Embedded Conversion Option [Member]
Beginning Balance
Initial Liability	208
Payments
Accretion
Cancellation of Obligation / Conversions	(269)
Mark to Market	61
Ending Balance