Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Operating Cash Flows:
Net income	$ 48,451	$ 77,151
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, plant, and equipment	26,104	24,701
Amortization of intangible assets and debt costs	13,303	15,500
Stock-based compensation	21,269	17,162
Deferred income taxes	4,121	(1,965)
Changes in other long-term liabilities	(3,405)	(3,164)
Dividends received from unconsolidated entities, net of equity in income	1,136	2,210
Other	(15)	67
Changes in operating assets and liabilities, net of effect of acquired businesses:
Trade accounts receivable, net	42,210	(51,202)
Prepaid expenses and other	(11,087)	(6,270)
Term receivables, long-term	8,621	12,249
Accounts payable and accrued liabilities	(39,787)	(43,601)
Income taxes receivable and payable	(6,190)	(4,933)
Deferred revenue	(40,705)	14,967
Net cash provided by operating activities	64,026	52,872
Investing Cash Flows:
Proceeds from sale of short-term investments	3,112	0
Purchases of short-term investments	(7,820)	0
Purchases of property, plant, and equipment	(21,366)	(35,575)
Acquisitions of businesses and equity interests, net of cash acquired	(6,408)	(1,945)
Net cash used in investing activities	(32,482)	(37,520)
Financing Cash Flows:
Proceeds from issuance of common stock	37,801	33,028
Repurchase of common stock	(49,995)	(20,000)
Tax benefit from share options exercised	0	139
Dividends paid	(15,239)	0
Net decrease in short-term borrowings	(3,990)	(11,432)
Repayments of other borrowings	(2,712)	(1,871)
Net cash used in financing activities	(34,135)	(136)
Effect of exchange rate changes on cash and cash equivalents	(1,285)	(1,985)
Net change in cash and cash equivalents	(3,876)	13,231
Cash and cash equivalents at the beginning of the period	223,783	146,499
Cash and cash equivalents at the end of the period	$ 219,907	$ 159,730