Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 1,465,510	$ 1,230,491
Accounts receivable, less allowance for credit loss of $5,171 at September 30, 2020 and $11,143 at December 31, 2019	1,582,424	1,315,091
Deferred contract costs	232,351	131,783
Other	129,617	92,558
Total current assets	3,409,902	2,769,923
Property and equipment, less accumulated depreciation and amortization of $510,103 at September 30, 2020 and $478,906 at December 31, 2019	499,189	499,344
Operating lease right-of-use assets	422,002	390,035
Goodwill	7,927	7,927
Deferred federal and state income taxes, net	3,130	8,034
Other assets, net	16,404	16,621
Total assets	4,358,554	3,691,884
Current Liabilities:
Accounts payable	888,761	735,695
Accrued expenses, primarily salaries and related costs	236,826	189,446
Contract liabilities	267,266	154,183
Current portion of operating lease liabilities	70,755	65,367
Federal, state and foreign income taxes	33,100	23,627
Total current liabilities	1,496,708	1,168,318
Noncurrent portion of operating lease liabilities	357,373	326,347
Commitments and contingencies
Shareholders’ Equity:
Preferred stock, none issued	0	0
Common stock, par value $0.01 per share. Issued and outstanding: 169,231 shares at September 30, 2020 and 169,622 shares at December 31, 2019	1,692	1,696
Additional paid-in capital	145,924	3,203
Retained earnings	2,489,694	2,321,316
Accumulated other comprehensive loss	(135,281)	(131,187)
Total shareholders’ equity	2,502,029	2,195,028
Noncontrolling interest	2,444	2,191
Total equity	2,504,473	2,197,219
Total liabilities and equity	$ 4,358,554	$ 3,691,884