Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 47,808	$ 51,201
Accounts receivable, net of allowance for doubtful accounts of $7,805 and $7,486, respectively	83,617	83,985
Prepaid expenses	12,090	7,175
Other current assets	690	709
Total current assets	144,205	143,070
Property and equipment
Accumulated depreciation	(79,480)	(77,697)
Property and equipment, net	23,346	25,150
Intangible assets, net	104,458	109,733
Goodwill	397,292	399,085
Other assets	3,051	2,708
Total assets	672,352	679,746
Current liabilities
Current portion of long-term debt, net	3,000	10,948
Accounts payable and accrued expense	32,109	33,504
Current portion of contingent consideration	714	695
Deferred revenue	2,498	3,955
Total current liabilities	38,321	49,102
Long-term debt, net	494,335	472,600
Deferred tax liabilities	7,677	7,335
Other liabilities	9,889	8,488
Total liabilities	550,222	537,525
Commitments and contingencies
Stockholders' equity
Common stock $0.0001 par value, shares authorized - 200,000,000 shares authorized as of September 30, 2020 and December 31, 2019; shares issued and outstanding - 42,529,017 as of September 30, 2020 and December 31, 2019	4	4
Preferred Stock $0.0001 par value, 1,000,000 shares authorized, zero issued and outstanding as of September 30, 2020 and December 31, 2019
Additional paid-in capital	382,614	385,387
Accumulated deficit	(270,280)	(255,424)
Accumulated other comprehensive income	9,792	12,254
Total stockholders' equity	122,130	142,221
Total liabilities and stockholders' equity	672,352	679,746
Computer software and hardware
Property and equipment
Property and equipment, gross	72,689	72,211
Leasehold improvements
Property and equipment
Property and equipment, gross	26,821	27,271
Furniture, fixtures and other equipment
Property and equipment
Property and equipment, gross	$ 3,316	$ 3,365