Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Operating Cash Flows:
Net income (loss)	$ 45,085	$ 1,981
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization of property, plant, and equipment	16,157	15,673
Amortization of intangible assets and debt costs	10,855	12,507
Dividends received from unconsolidated entities, net of equity in income (loss)	1,029	1,010
Loss on debt extinguishment	0	(3,518)
Write-off of debt discount and debt issuance costs	0	8,010
Stock-based compensation	11,453	11,509
Deferred income taxes	(1,444)	(1,136)
Changes in other long-term liabilities	(874)	(1,984)
Other	29	(1)
Changes in operating assets and liabilities, net of effect of acquired businesses:
Trade accounts receivable, net	8,954	78,079
Prepaid expenses and other	(1,242)	(2,372)
Term receivables, long-term	1,021	(15,382)
Accounts payable and accrued liabilities	(61,699)	(75,704)
Income taxes payable	(3,893)	(9,064)
Deferred revenue	8,956	(1,790)
Net cash provided by (used in) operating activities	34,387	24,854
Investing Cash Flows:
Purchases of property, plant, and equipment	(22,183)	(16,624)
Acquisitions of businesses and equity interests, net of cash acquired	(1,803)	(2,036)
Net cash used in investing activities	(23,986)	(18,660)
Financing Cash Flows:
Proceeds from issuance of common stock	18,805	22,791
Repurchase of common stock	(20,000)	(59,996)
Tax benefit from share options exercised	139	0
Net decrease in short-term borrowings	(5,145)	(4,390)
Debt and equity issuance costs	0	(8,895)
Proceeds from notes payable and revolving credit facility	0	253,000
Repayments of notes payable and revolving credit facility	(1,871)	(219,919)
Net cash provided by (used in) financing activities	(8,072)	(17,409)
Effect of exchange rate changes on cash and cash equivalents	(2,467)	1,571
Net change in cash and cash equivalents	(138)	(9,644)
Cash and cash equivalents at the beginning of the period	146,499	133,113
Cash and cash equivalents at the end of the period	$ 146,361	$ 123,469