Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	3 Months Ended
	Apr. 30, 2011	Apr. 30, 2010
OPERATING ACTIVITIES:
Net income	$ 10,510	$ 10,741
Adjustments to reconcile net income to net cash used in operating activities:
Share-based compensation costs	3,698	1,683
Depreciation	12,441	11,412
Amortization of intangible assets	3,455	3,344
Amortization of debt issuance costs	782	713
Deferred income taxes	(1,717)	(859)
Uncertain tax positions	168	145
Excess tax benefit from share-based compensation	(398)	(251)
Loss on disposal of property, plant and equipment	54	32
Provision for doubtful accounts	1,089	730
Other	398	239
Changes in operating assets and liabilities:
Increase in trade receivables	(94,581)	(82,511)
(Increase)/decrease in other assets	(5,308)	2,465
Increase in trade payables	35,348	24,961
Decrease in accrued liabilities and other liabilities	(9,572)	(1,324)
Net cash used in operating activities	(43,633)	(28,480)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(3,935)	(5,064)
Proceeds from disposal of property, plant and equipment	906	488
Purchases of software and other intangible assets	(5,153)	(587)
Net increase in other non-current assets	(1,620)	(781)
Other	(4)	(95)
Net cash used in investing activities	(9,806)	(6,039)
FINANCING ACTIVITIES:
Borrowings from bank lines of credit	28,873	1,420
Repayments of bank lines of credit	(20,177)	(3,797)
Net borrowings under revolving lines of credit	9,139	25,634
Net increase in short-term borrowings	57	963
Proceeds from issuance of long-term borrowings	198	55
Repayment of long-term borrowings	(1,787)	(300)
Repayment of capital lease obligations	(4,373)	(7,086)
Contingent consideration paid	(26)
Acquisition of noncontrolling interest	(1,168)
Dividends paid to noncontrolling interests	(157)	(34)
Net proceeds from issuance of ordinary shares	1,334	3,189
Excess tax benefits from share-based compensation	398	251
Net cash provided by financing activities	12,311	20,295
Effect of foreign exchange rate changes on cash and cash equivalents	19,330	4,161
Net decrease in cash and cash equivalents	(21,798)	(10,063)
Cash and cash equivalents at beginning of period	326,795	350,784
Cash and cash equivalents at end of period	$ 304,997	$ 340,721