Investment in joint venture (Tables)

9 Months Ended

Oct. 31, 2014

Schedule of Equity Method Investments [Line Items]

Equity Method Investments [Table Text Block]

	October 31, 2014	January 31, 2014
Current assets	$14,451	$13,034
Noncurrent assets	16,085	17,093
Current liabilities	4,184	2,921
Noncurrent liabilities	11,923	14,837
Equity	14,429	12,369

	Nine Months Ended October 31,
	2014		2013
Revenue		$28,666		$19,913
Gross profit	5,426		3,157
Income from continuing operations	3,820		1,570
Net income	2,268		516

	Nine Months Ended October 31,
	2014	2013
Income from joint venture	1,114	248

The following information summarizes the joint venture financial data as of October 31, 2014 and January 31, 2014, respectively:

	October 31, 2014	January 31, 2014
Current assets	$14,451	$13,034
Noncurrent assets	16,085	17,093
Current liabilities	4,184	2,921
Noncurrent liabilities	11,923	14,837
Equity	14,429	12,369

	Nine Months Ended October 31,
	2014		2013
Revenue		$28,666		$19,913
Gross profit	5,426		3,157
Income from continuing operations	3,820		1,570
Net income	2,268		516