Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Changes in operating assets and liabilities:
Accounts receivable	$ (15,569)	$ (5,536)	$ 6,325
Inventories	(11,528)	(9,189)	1,552
Prepaid expenses and other assets	(291)	96	(49)
Accounts Payable	(233)	2,713	2,934
Accrued and other liabilities	4,578	4,428	(520)
Customer advances	(33)	215	693
Other operating activites, net	(23,076)	(7,273)	10,935
Cash paid during the year for income taxes	16,782	19,700	13,816
Significant non-cash transactions:
Capital expenditures included in accounts payable	$ 984	$ 2,181	$ 474

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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