Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 1,318,520	$ 1,148,320
Accounts receivable, less allowance for credit loss of $6,979 at March 31, 2025 and $6,878 at December 31, 2024	1,904,171	1,997,840
Deferred contract costs	279,843	349,343
Other	138,070	164,272
Total current assets	3,640,604	3,659,775
Property and equipment, less accumulated depreciation and amortization of $630,591 at March 31, 2025 and $615,533 at December 31, 2024	453,696	449,404
Operating lease right-of-use assets	568,790	551,652
Goodwill	7,927	7,927
Deferred federal and state income taxes, net	70,126	70,671
Other assets, net	15,507	15,029
Total assets	4,756,650	4,754,458
Current Liabilities:
Accounts payable	1,047,374	1,036,749
Accrued liabilities, primarily salaries and related costs	440,646	451,921
Contract liabilities	359,508	441,927
Current portion of operating lease liabilities	109,455	106,736
Federal, state and foreign income taxes	33,261	29,140
Total current liabilities	1,990,244	2,066,473
Noncurrent portion of operating lease liabilities	478,903	462,201
Commitments and contingencies
Shareholders’ Equity:
Preferred stock, none issued	0	0
Common stock, par value $0.01 per share. Issued and outstanding: 136,733 at March 31, 2025 and 138,003 at December 31, 2024	1,368	1,380
Additional paid-in capital	0	0
Retained earnings	2,504,222	2,455,132
Accumulated other comprehensive loss	(219,799)	(233,500)
Total shareholders’ equity	2,285,791	2,223,012
Noncontrolling interest	1,712	2,772
Total equity	2,287,503	2,225,784
Total liabilities and equity	$ 4,756,650	$ 4,754,458