Debt (Details) (USD $)	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2012 Accounts receivable	Oct. 31, 2012 Inventory	Oct. 31, 2012 Maximum	Oct. 31, 2012 Maximum Inventory	Oct. 31, 2012 Minimum	Oct. 31, 2012 Alternate Base Rate loans Maximum	Oct. 31, 2012 Alternate Base Rate loans Minimum	Oct. 31, 2012 Eurodollar Currency Rate loans Maximum	Oct. 31, 2012 Eurodollar Currency Rate loans Minimum	Jun. 15, 2012 Revolving Credit Facility [Member] Amendment No. 1 to the Credit Agreement	Oct. 31, 2012 Revolving Credit Facility [Member] Credit Agreement	Jul. 27, 2012 Revolving Credit Facility [Member] Credit Agreement	Jul. 27, 2012 Revolving Credit Facility [Member] Amendment No. 2 to the Credit Agreement
Debt (Textual) [Abstract]
Revolving Credit Facility borrowing base limitation		85.00%	60.00%		85.00%
Revolving Credit Facility, range	$ 60,000,000			$ 12,000,000		$ 6,000,000
Revolving Credit Facility bears interest, range							1.75%	0.75%	2.75%	1.75%
Revolving Credit Facility, Amended											3,000,000
Line of Credit Facility, Covenant, Minimum													1,600,000	300,000
Minimum fixed charge coverage ratio												1.10
Minimum Net Worth Required for Compliance												37,007,500
Minimum EBITDA												10,300,000
Maintained a tangible net worth												36,495,000
Maintained fixed charge coverage ratio												9.10
Achieved EBITDA												10,206,000
Debt (Additional Textual) [Abstract]
Revolving Credit and Security Agreement	Dec. 22, 2011
Secured revolving line of credit	60,000,000			12,000,000		6,000,000
Sub-limit for issuances of letters of credit	3,000,000
Revolving Credit Facility due date	Dec. 22, 2014
Revolving Credit Facility bears interest increased	2.00%
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
Revolving Credit Facility	$ 11,757,000