Employee Stock Compensation (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jul. 31, 2015	Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding at January 31, 2015	17,000
Number of Shares, Granted	0
Number of Shares, Exercised	(1,000)
Number of Shares, Forfeited	(5,000)
Number of Shares, Outstanding, Outstanding at July 31, 2015	11,000	17,000
Number of Shares, Exercisable at July 31, 2015	11,000
Number of Shares, Reserved for future issuance, Directors' Plan (expired on December 31, 2012)	0
Weighted Average Exercise Price per Share, Outstanding at January 31, 2015 (in dollars per share)	$ 7.11
Weighted Average Exercise Price per Share, Granted (in dollars per share)	0
Weighted Average Exercise Price per Share, Exercised (in dollars per share)	8.00
Weighted Average Exercise Price per Share, Forfeited (in dollars per share)	6.21
Weighted Average Exercise Price per Share, Outstanding at July 31, 2015 (in dollars per share)	7.44	$ 7.11
Weighted Average Exercise Price per Share, Exercisable at July 31, 2015 (in dollars per share)	$ 7.44
Weighted Average Remaining Contractual Term, Outstanding at July 31, 2015 (in years)	2 years 2 months 12 days	1 year 9 months 29 days
Weighted Average Remaining Contractual Term, Exercisable at July 31, 2015 (in years)	2 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding at July 31, 2015 (in dollars)	$ 35,230	$ 54,580
Aggregate Intrinsic Value, Exercisable at July 31, 2015 (in dollars)	$ 35,230