Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 46,468	$ 51,201
Accounts receivable, net of allowance for doubtful accounts of $9,774 and $8,513, respectively	93,273	83,985
Prepaid expenses	9,669	7,175
Other current assets	1,133	709
Total current assets	150,543	143,070
Property and equipment
Accumulated depreciation	(81,261)	(77,697)
Property and equipment, net	22,276	25,150
Intangible assets, net	59,291	109,733
Goodwill	395,759	399,085
Other assets	8,535	2,708
Total assets	636,404	679,746
Current liabilities
Current portion of long-term debt, net	3,000	10,948
Accounts payable and accrued expense	27,067	33,504
Current portion of contingent consideration	646	695
Deferred revenue	4,800	3,955
Total current liabilities	35,513	49,102
Long-term debt, net	507,706	472,600
Deferred tax liabilities	6,772	7,335
Other liabilities	8,559	8,488
Total liabilities	558,550	537,525
Commitments and contingencies
Stockholders' equity
Common stock $0.0001 par value, 200,000,000 shares authorized, 42,684,549 and 42,529,017 issued and outstanding as of December 31, 2021 and December 31, 2020, respectively	4	4
Preferred stock $0.0001 par value, 1,000,000 shares authorized, zero issued and outstanding as of December 31, 2021 and December 31, 2020
Additional paid-in capital	386,028	385,387
Accumulated deficit	(315,967)	(255,424)
Accumulated other comprehensive income	7,789	12,254
Total stockholders' equity	77,854	142,221
Total liabilities and stockholders' equity	636,404	679,746
Computer software and hardware
Property and equipment
Property and equipment, gross	73,677	72,211
Leasehold improvements
Property and equipment
Property and equipment, gross	26,796	27,271
Furniture, fixtures and other equipment
Property and equipment
Property and equipment, gross	$ 3,064	$ 3,365