Supplemental Cash Flow Information (Tables)

12 Months Ended

Jan. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

	For the years ended January 31,
	2013			2012			2011
Changes in operating assets and liabilities:
Accounts receivable	$	4,362		$	(15,569	)	$	(5,536	)
Inventories	8,567			(11,528		)	(9,189		)
Prepaid expenses and other assets	976			(291		)	96
Accounts payable	(2,937		)	(233		)	2,713
Accrued and other liabilities	(1,709		)	4,578			4,428
Customer advances	(60		)	(33		)	215
	$	9,199		$	(23,076	)	$	(7,273	)
Cash paid during the year for income taxes	$	26,697		$	16,782		$	19,700
Significant non-cash transactions:
Capital expenditures included in accounts payable	$	2,196		$	984		$	2,181