Supplemental Cash Flow Information (Tables)

12 Months Ended

Jan. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

	For the years ended January 31,
	2015			2014			2013
Changes in operating assets and liabilities:
Accounts receivable	$	4,699		$	1,297		$	4,362
Inventories	6,753			(9,190		)	8,567
Prepaid expenses and other assets	195			(239		)	976
Accounts payable	(3,578		)	(994		)	(2,937		)
Accrued and other liabilities	48			(1,150		)	(1,709		)
Customer advances	(144		)	(173		)	(60		)
	$	7,973		$	(10,449	)	$	9,199
Supplemental disclosures of cash flow information
Cash paid during the year for income taxes	$	14,011		$	20,002		$	26,697
Interest paid	$	160		$	—		$	—
Significant non-cash transactions:
Issuance of common stock for business acquisition	$	39,252		$	—		$	—
Capital expenditures included in accounts payable	$	564		$	1,083		$	2,196