Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 1,156,043	$ 974,435
Accounts receivable, less allowance for doubtful accounts of $9,911 at March 31, 2017 and $9,247 at December 31, 2016	1,126,488	1,190,130
Other	119,265	54,014
Total current assets	2,401,796	2,218,579
Property and equipment, less accumulated depreciation and amortization of $394,154 at March 31, 2017 and $406,652 at December 31, 2016	463,604	536,572
Goodwill	7,927	7,927
Other assets, net	29,392	27,793
Total assets	2,902,719	2,790,871
Current Liabilities:
Accounts payable	701,122	726,571
Accrued expenses, primarily salaries and related costs	205,255	185,502
Federal, state and foreign income taxes	20,427	17,858
Total current liabilities	926,804	929,931
Deferred Federal and state income taxes	24,195	13,727
Commitments and contingencies
Shareholders' Equity:
Preferred stock, none issued	0	0
Common stock, par value $0.01 per share. Issued and outstanding 179,924 shares at March 31, 2017 and 179,857 shares at December 31, 2016	1,800	1,799
Additional paid-in capital	4,721	2,642
Retained earnings	2,038,053	1,944,789
Accumulated other comprehensive loss	(95,678)	(104,592)
Total shareholders’ equity	1,948,896	1,844,638
Noncontrolling interest	2,824	2,575
Total equity	1,951,720	1,847,213
Total liabilities and equity	$ 2,902,719	$ 2,790,871

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.