Discontinued Operations (Details) (USD $)	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Discontinued operations [Line Items]
Total current assets from discontinued operations	$ 0	$ 1,223,000
Assets held for sale, noncurrent	0	914,000
Liabilities held for sale current	0	527,000
Liabilities held for sale long-term	0	968,000
Net proceeds from sale of discontinued operations		16,000,000
Disposal date		Jun. 26, 2013
Discontinued operation, net sales	176,000	14,063,000
Gain on disposal of discontinued operations	188,000	11,082,000
(Loss) income from discontinued operation	(202,000)	(28,000)
(Loss) income) from discontinued operation, before income tax	(14,000)	11,054,000
Discontinued operation, income tax expense	324,000	2,820,000
(Loss) income from discontinued operations, net of tax	$ (338,000)	$ 8,234,000