CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 83,204	$ 70,728
Accounts receivable, net	133,085	129,118
Prepaid expenses	5,575	4,647
Other current assets	4,646	7,404
Total current assets	226,510	211,897
Property and equipment, net	11,902	12,170
ROU asset	38,539	27,748
Goodwill	427,928	335,564
Intangible assets, net	63,571	37,953
Other non-current assets	17,311	15,160
Total assets	785,761	640,492
Current liabilities:
Accounts payable	25,613	23,081
Other current liabilities	103,267	61,503
Total current liabilities	128,880	84,584
Long-term debt, net	183,624	124,664
Operating lease liabilities	29,098	19,649
Other non-current liabilities	50,081	30,580
Total liabilities	391,683	259,477
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, 2020 and December 31, 2019)	0	0
Common stock (par value $0.001 per share; 100,000,000 authorized; 50,296,453 shares issued and 32,074,094 shares outstanding as of December 31, 2020; 49,272,243 shares issued and 31,686,991 shares outstanding as of December 31, 2019)	50	49
Additional paid-in capital	459,866	455,465
Accumulated other comprehensive income (loss)	3,746	(2,650)
Treasury stock, at cost (18,222,359 shares as of December 31, 2020; 17,585,252 shares as of December 31, 2019)	(289,225)	(261,624)
Retained earnings	219,641	189,775
Total stockholders’ equity	394,078	381,015
Total liabilities and stockholders’ equity	$ 785,761	$ 640,492