Income Taxes - Schedule of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets
Lease liability	$ 4,447	$ 4,295
AMT credit	9	9
Accrued expenses	3,066	2,837
Deferred revenue	555
Net operating loss carryforward	73,752	50,950
Other assets	7,483	6,967
Intangible assets	2,448	2,416
Valuation allowance	(52,320)	(24,637)
Total net deferred tax assets	39,440	42,837
Deferred tax liabilities
Deferred commissions	(5,996)	(4,308)
Deferred revenue		(336)
Intangible assets	(18,199)	(7,948)
Property and equipment	(685)	(296)
Debt discount	(20,370)	(26,589)
Right-of-use asset	(4,029)	(3,909)
Deferred state taxes		(1,101)
Other	(134)	(352)
Total deferred tax liabilities	(49,413)	(44,839)
Total non-current deferred income tax liabilities	$ (9,973)	$ (2,002)