Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
Net operating losses	$ 42,756	$ 27,929
Stock compensation	2,430	1,455
Other deferred assets	2,470	2,176
Accrued compensation	1,962	608
Operating lease liabilities	1,274
Contingent obligation - imputed interest	199	101
Other, net	12	11
Valuation allowance	(36,972)	(32,280)
Total deferred income tax assets	14,131	0
Deferred income tax liabilities:
Intangible amortization	(12,970)	(15,055)
Operating lease right-of-use assets	(1,017)
Fixed asset depreciation	(144)	0
Total deferred income tax liabilities	(14,131)	(15,055)
Net deferred income taxes	$ 0	$ (15,055)