Accrued Expenses and Long-term Liabilities - Schedule of Other Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued royalties	$ 2,487	$ 1,934
Contingent consideration	676	502
Upfront Medicare payment	2,066
Operating lease liability	1,110	1,321
Financing lease liability	134	184
Deferred revenue	69	457
Payable to CGI		888
Accrued sales and marketing - diagnostics	111	197
Accrued lab costs - diagnostics	150	163
Accrued professional fees	1,090	1,399
Taxes payable	301	403
Unclaimed property	565	565
All others	1,372	1,463
Total other accrued expenses	$ 10,131	$ 9,476