Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 60,286	$ 53,374
Receivables—net	471,106	476,035
Prepaid expenses	38,510	32,600
Taxes receivable—current	9,657	22,140
Other current assets	14,260	13,372
Total Current Assets	593,819	597,521
Goodwill	1,509,259	1,498,988
Other intangible assets—net	252,344	265,555
Property and equipment—net	136,104	133,297
Operating lease right of use assets	79,973	75,319
Employee supplemental savings plan assets	35,286	43,342
Investments	11,555	11,555
Other assets	15,820	13,988
TOTAL ASSETS	2,634,160	2,639,565
LIABILITIES
Accounts payable	158,973	169,140
Accrued salaries and related expenses	124,098	129,685
Operating lease obligations—current	32,118	32,557
Contract liabilities	30,320	36,197
Accrued expenses and other current liabilities	11,691	9,649
Total Current Liabilities	357,200	377,228
Long-term debt	300,000	300,000
Deferred income taxes	170,520	174,060
Operating lease obligations—long term	69,300	63,575
Accrued retirement	29,701	36,053
Other long-term liabilities	13,142	13,229
TOTAL LIABILITIES	939,863	964,145
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Additional paid-in capital	570,871	566,573
Treasury stock	(9,158)	(9,158)
Retained earnings	1,132,457	1,117,867
Accumulated other comprehensive loss	(285)	(273)
TOTAL STOCKHOLDERS' EQUITY	1,694,297	1,675,420
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	2,634,160	2,639,565
Class A common stock
STOCKHOLDERS' EQUITY
Common stock	396	279
Class B common stock
STOCKHOLDERS' EQUITY
Common stock	$ 16	$ 132