Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 1,271,853	$ 1,512,883
Accounts receivable, less allowance for credit loss of $6,966 at June 30, 2024 and $6,550 at December 31, 2023	1,843,894	1,532,599
Deferred contract costs	395,241	218,807
Other	185,766	170,907
Total current assets	3,696,754	3,435,196
Property and equipment, less accumulated depreciation and amortization of $608,860 at June 30, 2024 and $597,473 at December 31, 2023	461,494	479,225
Operating lease right-of-use assets	537,114	516,280
Goodwill	7,927	7,927
Deferred federal and state income taxes, net	69,646	63,690
Other assets, net	15,406	21,491
Total assets	4,788,341	4,523,809
Current Liabilities:
Accounts payable	1,073,476	860,856
Accrued liabilities, primarily salaries and related costs	486,989	447,336
Contract liabilities	474,507	280,909
Current portion of operating lease liabilities	104,042	99,749
Federal, state and foreign income taxes	21,904	15,562
Total current liabilities	2,160,918	1,704,412
Noncurrent portion of operating lease liabilities	448,996	427,984
Commitments and contingencies
Shareholders’ Equity:
Preferred stock, none issued	0	0
Common stock, par value $0.01 per share. Issued and outstanding: 140,633 shares at June 30, 2024 and 143,866 shares at December 31, 2023	1,406	1,439
Additional paid-in capital	7,732	0
Retained earnings	2,385,740	2,580,968
Accumulated other comprehensive loss	(218,457)	(192,057)
Total shareholders’ equity	2,176,421	2,390,350
Noncontrolling interest	2,006	1,063
Total equity	2,178,427	2,391,413
Total liabilities and equity	$ 4,788,341	$ 4,523,809