Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 1,230,491	$ 923,735
Accounts receivable, net	1,315,091	1,581,530
Deferred contract costs	131,783	159,510
Other	92,558	70,041
Total current assets	2,769,923	2,734,816
Property and equipment, net	499,344	504,105
Operating lease right-of-use assets	390,035	0
Goodwill	7,927	7,927
Deferred federal and state income taxes, net	8,034	40,465
Other assets, net	16,621	27,246
Total assets	3,691,884	3,314,559
Current Liabilities:
Accounts payable	735,695	902,259
Accrued expenses, primarily salaries and related costs	189,446	215,813
Contract liabilities	154,183	190,343
Current portion of operating lease liabilities	65,367	0
Federal, state and foreign income taxes	23,627	18,424
Total current liabilities	1,168,318	1,326,839
Noncurrent portion of operating lease liabilities	326,347	0
Commitments and contingencies
Shareholders’ Equity:
Preferred stock, par value $0.01 per share, authorized 2,000 shares; none issued	0	0
Common stock, par value $0.01 per share, authorized 640,000. Issued and outstanding: 169,622 shares at December 31, 2019 and 171,582 shares at December 31, 2018	1,696	1,716
Additional paid-in capital	3,203	1,896
Retained earnings	2,321,316	2,088,707
Accumulated other comprehensive loss	(131,187)	(105,481)
Total shareholders’ equity	2,195,028	1,986,838
Noncontrolling interest	2,191	882
Total equity	2,197,219	1,987,720
Total liabilities and equity	$ 3,691,884	$ 3,314,559