Debt (Narrative) (Details) (USD $)	12 Months Ended
	Jan. 31, 2015	Mar. 31, 2015
Line of Credit Facility [Line Items]
Minimum EBITDA	$ 7,281,000
Revolving credit facility	50,000,000
Sub-limit for issuances of letters of credit	3,000,000
Revolving Credit Facility bears interest increased	2.00%
Minimum fixed charge coverage ratio	1.00
Debt Instrumet, Covenant, Maintained Tangible Net Worth	22,573,000
Provision to reduce borrowings under the line	6,000,000
Provision to reduce borrowings under the line, period	60 days
Judgments or judicial actions against the borrowers in excess	250,000
Accounts receivable [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation	85.00%
Inventory [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation	60.00%
Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility	8,000,000
Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility	14,000,000
Maximum [Member] | Accounts receivable [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation	85.00%
Credit Agreement [Member]
Line of Credit Facility [Line Items]
Minimum EBITDA	5,512,000
Minimum fixed charge coverage ratio	1.00
PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity	10,658,000
PNC [Member] | Revolving Credit Facility [Member] | Credit Agreement [Member]
Line of Credit Facility [Line Items]
Minimum tangible net worth covenant	25,190,000
Eurodollar [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	1.75%
Eurodollar [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	2.75%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	0.75%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	1.75%
Subsequent Event [Member]
Line of Credit Facility [Line Items]
Debt Instrumet, Covenant, Maintained Tangible Net Worth		$ 20,565,000