Supplemental Cash Flow Information (Tables)

12 Months Ended

Jan. 31, 2017

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

	For the years ended January 31,
	2017			2016			2015
Changes in operating assets and liabilities:
Accounts receivable	$	(5,361	)	$	16,847		$	4,699
Inventories	1,215			7,564			6,753
Prepaid expenses and other assets	228			(111		)	195
Accounts payable	2,558			(5,059		)	(3,578		)
Accrued and other liabilities	7,279			(8,985		)	48
Customer advances	1,126			(368		)	(144		)
	$	7,045		$	9,888		$	7,973
Supplemental disclosures of cash flow information:
Cash paid during the year for income taxes	$	6,618		$	6,558		$	14,011
Interest paid	$	190		$	129		$	160
Significant non-cash transactions:
Issuance of common stock for business acquisition	$	—		$	—		$	39,252
Capital expenditures included in accounts payable	$	84		$	161		$	564
Capital expenditures converted from inventory	$	—		$	1,036		$	491