Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 927,107	$ 1,247,652
Short-term investments	40,336	26,337
Accounts receivable, less allowance for doubtful accounts of $7,119 in 2014 and $8,695 in 2013	1,236,042	1,073,500
Deferred Federal and state income taxes	20,279	18,396
Other	65,486	49,384
Total current assets	2,289,250	2,415,269
Property and equipment, net	538,415	563,064
Goodwill	7,927	7,927
Other assets, net	55,313	28,552
Total assets	2,890,905	3,014,812
Current Liabilities:
Accounts payable	770,238	648,156
Accrued expenses, primarily salaries and related costs	192,468	200,301
Federal, state and foreign income taxes	21,077	21,743
Total current liabilities	983,783	870,200
Deferred Federal and state income taxes	35,514	58,281
Commitments and contingencies
Shareholders’ Equity:
Preferred stock, par value $0.01 per share, authorized 2,000,000 shares; none issued	0	0
Common stock, par value $0.01 per share, authorized 640,000,000 shares; issued and outstanding 191,655,690 shares at December 31, 2014 and 202,553,220 shares at December 31, 2013	1,916	2,025
Additional paid-in capital	1,113	1,647
Retained earnings	1,903,196	2,087,376
Accumulated other comprehensive loss	(37,817)	(6,265)
Total shareholders’ equity	1,868,408	2,084,783
Noncontrolling interest	3,200	1,548
Total equity	1,871,608	2,086,331
Total liabilities and equity	$ 2,890,905	$ 3,014,812