CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 24,410	$ 83,204
Accounts receivable, net	177,602	133,085
Prepaid expenses	5,400	5,575
Other current assets	7,296	4,646
Total current assets	214,708	226,510
Property and equipment, net	14,747	11,902
ROU asset	33,353	38,539
Goodwill	515,229	427,928
Intangible assets, net	81,277	63,571
Other non-current assets	23,258	17,311
Total assets	882,572	785,761
Current liabilities:
Accounts payable	26,074	25,613
Other current liabilities	93,877	103,267
Total current liabilities	119,951	128,880
Long-term debt, net	326,126	183,624
Operating lease liabilities	23,898	29,098
Other non-current liabilities	47,832	50,081
Total liabilities	517,807	391,683
Commitments and contingencies (see Note 17)
Stockholders’ equity:
Preferred stock (par value $0.001 per share; 8,000,000 authorized; no shares issued or outstanding as of December 31, 2021 and December 31, 2020)	0	0
Common stock (par value $0.001 per share; 100,000,000 authorized; 52,534,967 shares issued and 33,881,196 shares outstanding as of December 31, 2021; 50,296,453 shares issued and 32,074,094 shares outstanding as of December 31, 2020)	53	50
Additional paid-in capital	423,235	459,866
Accumulated other comprehensive (loss) income	(5,843)	3,746
Treasury stock, at cost (18,653,771 shares as of December 31, 2021; 18,222,359 shares as of December 31, 2020)	(324,412)	(289,225)
Retained earnings	271,732	219,641
Total stockholders’ equity	364,765	394,078
Total liabilities and stockholders’ equity	$ 882,572	$ 785,761