Consolidated Statement Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Cash flows from operating activities:
Cash received from customers	$ 13,354,829	$ 14,595,183
Cash paid to vendors and employees	(13,012,442)	(14,498,501)
Interest paid, net	(9,736)	(12,644)
Income taxes paid	(29,473)	(34,344)
Net cash provided by operating activities	303,178	49,694
Cash flows from investing activities:
Acquisition of business (Note 5)	(27,848)	0
Expenditures for property and equipment	(8,816)	(7,337)
Proceeds from sale of property and equipment	0	7,121
Software and software development costs	(6,180)	(4,131)
Proceeds from sale of subsidiaries (Note 6)	18,747	0
Net cash used in investing activities	(24,097)	(4,347)
Cash flows from financing activities:
Proceeds from the reissuance of treasury stock	229	669
Acquisition earn-out payment	(2,736)	(5,060)
Cash paid for purchase of treasury stock	(110,092)	0
Net borrowings on revolving credit loans	5,857	4,704
Principal payments on long-term debt	(238)	(285)
Excess tax benefit from stock-based compensation	128	650
Net cash (used in) provided by financing activities	(106,852)	678
Effect of exchange rate changes on cash and cash equivalents	(5,955)	(4,598)
Net increase in cash and cash equivalents	166,274	41,427
Cash and cash equivalents at beginning of year	542,995	570,101
Cash and cash equivalents at end of period	709,269	611,528
Reconciliation of net income to net cash provided by operating activities:
Net income	127,689	52,795
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on disposal of subsidiaries	517	0
Depreciation and amortization	28,171	35,929
Gain on sale of building	0	(2,350)
Provision for losses on accounts receivable	2,050	5,558
Stock-based compensation expense	7,778	5,842
Accretion of debt discount and debt issuance costs on Senior Notes	418	418
Excess tax benefits from stock-based compensation	(128)	(650)
Changes in operating assets and liabilities:
Accounts receivable	85,962	219,877
Inventories	(38,238)	253,775
Prepaid expenses and other assets	(34,129)	42,445
Accounts payable	134,777	(501,794)
Accrued expenses and other liabilities	(11,689)	(62,151)
Total adjustments	175,489	(3,101)
Net cash provided by operating activities	$ 303,178	$ 49,694