Consolidated Statement Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Cash flows from operating activities:
Cash received from customers	$ 7,290,837	$ 6,854,110
Cash paid to vendors and employees	(7,174,844)	(6,695,526)
Interest paid, net	(9,521)	(9,538)
Income taxes paid	(11,402)	(14,825)
Net cash provided by operating activities	95,070	134,221
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	0	8,044
Acquisition of trademark	0	(1,519)
Expenditures for property and equipment	(2,426)	(3,692)
Software and software development costs	(1,801)	(4,042)
Net cash used in investing activities	(4,227)	(1,209)
Cash flows from financing activities:
Proceeds from the reissuance of treasury stock	553	1,139
Payments of Merger Related Costs, Financing Activities	3,457
Acquisition earn-out payment	(4,200)	(6,183)
Net borrowings (repayments) on revolving credit loans	5,884	(133,308)
Principal payments on long-term debt	(143)	(130)
Excess tax benefit from stock-based compensation	546	684
Net cash provided by (used in) financing activities	3,383	(137,798)
Effect of exchange rate changes on cash and cash equivalents	11,305	(9,251)
Net increase (decrease) in cash and cash equivalents	105,531	(14,037)
Cash and cash equivalents at beginning of year	570,101	340,564
Cash and cash equivalents at end of period	675,632	326,527
Reconciliation of net income to net cash provided by operating activities:
Net income	13,467	17,760
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	18,216	17,967
Provision for losses on accounts receivable	3,424	1,474
Stock-based compensation expense	1,973	3,091
Accretion of debt discount on Senior Notes	66	66
Excess tax benefits from stock-based compensation	(546)	(684)
Changes in operating assets and liabilities:
Accounts receivable	211,064	400,527
Inventories	154,505	32,905
Prepaid expenses and other assets	(8,433)	123,941
Accounts payable	(263,429)	(399,971)
Accrued expenses and other liabilities	(35,237)	(62,855)
Total adjustments	81,603	116,461
Net cash provided by operating activities	$ 95,070	$ 134,221