Accrued Expenses and Long-term Liabilities - Schedule of Other Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued royalties	$ 2,101	$ 1,934
Contingent consideration	602	502
Operating lease liability	1,251	1,321
Financing lease liability	160	184
Deferred revenue	354	457
Payable to CGI	888	888
Accrued sales and marketing - diagnostics	167	197
Accrued lab costs - diagnostics	104	163
Accrued professional fees	1,064	1,399
Taxes payable	327	403
Unclaimed property	565	565
All others	1,056	1,463
Total other accrued expenses	$ 8,639	$ 9,476