Debt (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended								3 Months Ended				0 Months Ended				6 Months Ended
	Jul. 31, 2014	Jul. 31, 2014	Jul. 31, 2014 Accounts receivable [Member]	Jul. 31, 2014 Inventory [Member]	Jul. 31, 2014 Minimum [Member]	Jul. 31, 2014 Maximum [Member]	Jul. 31, 2014 Maximum [Member] Accounts receivable [Member]	Jul. 31, 2014 Credit Agreement [Member]	Jul. 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]	Jun. 15, 2012 PNC [Member] Revolving Credit Facility [Member] Amendment No. 1 to the Credit Agreement [Member]	Jun. 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]	Apr. 15, 2014 PNC [Member] Revolving Credit Facility [Member] Amendment No. 7 To The Credit Agreement [Member]	Apr. 14, 2014 PNC [Member] Revolving Credit Facility [Member] Amendment No. 7 To The Credit Agreement [Member]	Jul. 31, 2014 PNC [Member] Revolving Credit Facility [Member] Credit Agreement [Member]	Dec. 22, 2011 PNC [Member] Revolving Credit Facility [Member] Credit Agreement [Member]	Jul. 31, 2014 Eurodollar [Member] Minimum [Member]	Jul. 31, 2014 Eurodollar [Member] Maximum [Member]	Jul. 31, 2014 Alternate Base Rate Loans [Member] London Interbank Offered Rate LIBOR [Member] Minimum [Member]	Jul. 31, 2014 Alternate Base Rate Loans [Member] London Interbank Offered Rate LIBOR [Member] Maximum [Member]	Jan. 31, 2015 Scenario, Forecast [Member] Credit Agreement [Member]
Line of Credit Facility [Line Items]
Increase(Decrease) in borrowing capacity										$ 3,000,000				$ (10,000,000)
Line of Credit Facility, Maximum Borrowing Capacity											9,000,000	6,000,000		50,000,000	60,000,000
Minimum EBITDA								4,420,000					300,000				1,600,000					5,512,000
Revolving credit facility					8,000,000	14,000,000
Sub-limit for issuances of letters of credit		3,000,000
Revolving credit facility borrowing base limitation			85.00%	60.00%			85.00%
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																26,350,000
Minimum fixed charge coverage ratio								1.00
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									$ 18,360,000