Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 38,403	$ 46,468
Accounts receivable, net of allowance for doubtful accounts of $8,573 and $9,774, respectively	98,950	93,273
Prepaid expenses	15,678	9,669
Other current assets	1,070	1,133
Total current assets	154,101	150,543
Property and equipment
Accumulated depreciation	(82,066)	(81,261)
Property and equipment, net	20,036	22,276
Intangible assets, net	56,245	59,291
Goodwill	394,226	395,759
Other assets	8,395	8,535
Total assets	633,003	636,404
Current liabilities
Current portion of long-term debt, net	3,000	3,000
Accounts payable and accrued expense	32,828	27,067
Current portion of contingent consideration	655	646
Deferred revenue	3,497	4,800
Total current liabilities	39,980	35,513
Long-term debt, net	510,301	507,706
Deferred tax liabilities	6,957	6,772
Other liabilities	8,533	8,559
Total liabilities	565,771	558,550
Commitments and contingencies
Stockholders' equity
Common stock $0.0001 par value, 200,000,000 shares authorized, 42,701,2016 and 42,684,549 issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	4	4
Preferred Stock $0.0001 par value, 1,000,000 shares authorized, zero issued and outstanding as of March 31, 2022 and December 31, 2021
Additional paid-in capital	387,126	386,028
Accumulated deficit	(325,547)	(315,967)
Accumulated other comprehensive income	5,649	7,789
Total stockholders' equity	67,232	77,854
Total liabilities and stockholders' equity	633,003	636,404
Computer software and hardware
Property and equipment
Property and equipment, gross	72,719	73,677
Leasehold improvements
Property and equipment
Property and equipment, gross	26,564	26,796
Furniture, fixtures and other equipment
Property and equipment
Property and equipment, gross	$ 2,819	$ 3,064