Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 158,205	$ 132,914
Accounts receivable, net	357,310	378,397
Prepaids and other current assets	134,333	104,597
Income and other tax receivables	48,139	40,894
Total current assets	697,987	656,802
Long-term assets
Property, plant and equipment, net	168,404	178,706
Operating lease assets	90,180	120,820
Goodwill	739,481	363,502
Deferred tax assets, net	11,130	15,081
Other intangible assets, net	212,349	112,059
Other long-term assets	77,273	69,438
Total long-term assets	1,298,817	859,606
Total assets	1,996,804	1,516,408
Current liabilities
Accounts payable	70,415	66,658
Accrued employee compensation and benefits	156,324	163,658
Other accrued expenses	63,369	55,915
Income taxes payable	9,471	19,709
Deferred revenue	95,608	39,956
Current operating lease liabilities	44,460	43,651
Other current liabilities	4,749	6,623
Total current liabilities	444,396	396,170
Long-term liabilities
Line of credit	791,000	385,000
Deferred tax liabilities, net	5,335	7,747
Non-current Income Taxes Payable	17,486	22,291
Non-current operating lease liabilities	64,419	98,277
Other long-term liabilities	79,827	96,185
Total long-term liabilities	958,067	609,500
Total liabilities	1,402,463	1,005,670
Redeemable noncontrolling interest	56,316	52,976
Stockholders' equity
Preferred stock - $0.01 par value: 10,000,000 shares authorized; zero shares outstanding as of December 31, 2021 and December 31, 2020	0	0
Common stock - $0.01 par value; 150,000,000 shares authorized; 46,990,031 and 46,737,033 shares outstanding as of December 31, 2021 and December 31, 2020, respectively	470	467
Additional paid-in capital	361,135	360,293
Treasury stock at cost: 35,062,222 and 35,315,220 shares as of December 31, 2021 and December 31, 2020, respectively	(597,031)	(601,214)
Accumulated other comprehensive income (loss)	(98,426)	(72,156)
Retained earnings	856,065	757,312
Noncontrolling interest	15,812	13,060
Total stockholders' equity	538,025	457,762
Total liabilities and stockholders' equity	$ 1,996,804	$ 1,516,408