Fair Value Measurements - Schedule of Financial Instrument Measured on Recurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Reported Value Measurement [Member]
Warrant liability	[1]	$ 732	$ 473
Fair value of liabilities		2,329	2,054
Fair Value Measurements [Member]
Warrant liability	[1]	732	473
Fair value of liabilities		2,329	2,054
Level 1 [Member]
Warrant liability	[1]
Fair value of liabilities
Level 2 [Member]
Warrant liability	[1]
Fair value of liabilities
Level 3 [Member]
Warrant liability	[1]	732	473
Fair value of liabilities		2,329	2,054
Asuragen [Member]
Contingent consideration	[1]	1,597	1,581
Asuragen [Member] | Fair Value Measurements [Member]
Contingent consideration	[1]	1,597	1,581
Asuragen [Member] | Level 1 [Member]
Contingent consideration	[1]
Asuragen [Member] | Level 2 [Member]
Contingent consideration	[1]
Asuragen [Member] | Level 3 [Member]
Contingent consideration	[1]	$ 1,597	$ 1,581

[1] See Note 7, Accrued Expenses and Long-Term Liabilities