Debt (Narrative) (Details) (USD $)	12 Months Ended									3 Months Ended				12 Months Ended
	Jan. 31, 2014	Jan. 31, 2014 Accounts receivable [Member]	Jan. 31, 2014 Inventory [Member]	Jan. 31, 2014 Minimum [Member]	Jan. 31, 2014 Maximum [Member]	Jan. 31, 2014 Maximum [Member] Accounts receivable [Member]	Jan. 31, 2014 Credit Agreement [Member]	Dec. 22, 2011 Wells Fargo Bank [Member] Revolving Credit Facility [Member] Amendment No. 2 to the Credit Agreement [Member]	Jan. 31, 2014 PNC [Member] Revolving Credit Facility [Member]	Jul. 14, 2012 PNC [Member] Revolving Credit Facility [Member] Amendment No. 1 to the Credit Agreement [Member]	Jul. 27, 2012 PNC [Member] Revolving Credit Facility [Member] Amendment No. 2 to the Credit Agreement [Member]	Jan. 31, 2014 PNC [Member] Revolving Credit Facility [Member] Credit Agreement [Member]	Dec. 22, 2011 PNC [Member] Revolving Credit Facility [Member] Credit Agreement [Member]	Jan. 31, 2014 Eurodollar [Member] Minimum [Member]	Jan. 31, 2014 Eurodollar [Member] Maximum [Member]	Jan. 31, 2014 Alternate Base Rate Loans [Member] London Interbank Offered Rate LIBOR [Member] Minimum [Member]	Jan. 31, 2014 Alternate Base Rate Loans [Member] London Interbank Offered Rate LIBOR [Member] Maximum [Member]
Line of Credit Facility [Line Items]
Increase in borrowing capacity										$ 3,000,000
Minimum EBITDA	3,301,000						5,593,000				300,000		1,600,000
Revolving credit facility	50,000,000			6,000,000	12,000,000
Sub-limit for issuances of letters of credit	3,000,000
Revolving credit facility borrowing base limitation		85.00%	60.00%			85.00%
Outstanding borrowings								9,800,000
Revolving credit facility bears interest range of														1.75%	2.75%	0.75%	1.75%
Revolving Credit Facility bears interest increased	2.00%
Minimum tangible net worth covenant												22,365,000
Minimum fixed charge coverage ratio	0.00						1.00
Debt Instrumet, Covenant, Maintained Tangible Net Worth	27,605,000
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
Remaining borrowing capacity									$ 10,919,000