Stock Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Jan. 31, 2012	Oct. 31, 2012 Restricted Stock Units (RSUs) [Member]	Oct. 31, 2011 Restricted Stock Units (RSUs) [Member]	Oct. 31, 2012 Restricted Stock Units (RSUs) [Member]	Oct. 31, 2011 Restricted Stock Units (RSUs) [Member]	Oct. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]	Oct. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]	Oct. 31, 2011 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]	Oct. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member]	Oct. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 3/21/2012, vesting immediately [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/8/2010, vesting over 1 year [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/8/2010, vesting over 1 year [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/8/2010, vesting over 1 year [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]	Oct. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]	Oct. 31, 2011 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Units Granted									31,250			520,000			78,125	40,000			68,960			56,455				382,500				262,500
Allocated Share-based Compensation Expense								$ 13,000	$ 21,000	$ 0	$ 42,000	$ 70,000		$ 31,000	$ 52,000	$ 80,000	$ 0	$ 50,000	$ 67,000	$ 83,000	$ 0		$ 58,000	$ 56,000	$ 60,000	$ 169,000	$ 185,000	$ 0	$ 79,000	$ 98,000	$ 244,000
Preferred Stock, Shares Outstanding	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number													0
Unamortized Compensation	1,222,000							29,000	29,000		762,000	762,000		73,000	73,000									358,000		358,000
Totals for the period	$ 557	$ 569		$ 142,000	$ 189,000	$ 557,000	$ 570,000
Date of Grants	Oct. 25, 2016