Retirement Plans (Periodic Pension Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Components of Net Cost
Amortization of prior service cost		$ 0
Defined Benefit Plan, Purchases, Sales, and Settlements		0		0
Employee Plan [Member]
Components of Net Cost
Service cost	0	0	0	0
Interest cost	315	322	945	966
Expected return on plan assets	(275)	(276)	(825)	(828)
Amortization of transition amount	0	0	0	0
Recognized (gain) loss due to curtailments	0	0	0	0
Amortization of prior service cost	0	0		0
Defined Benefit Plan, Purchases, Sales, and Settlements		800	0	800
Recognized net actuarial (gain) loss	284	350	852	1,050
Benefit cost	324	1,196	972	1,988
VIP Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase			50.00%
Components of Net Cost
Service cost	0	0	0	0
Interest cost	88	83	264	249
Expected return on plan assets	0	0	0	0
Amortization of transition amount	0	0	0	0
Recognized (gain) loss due to curtailments	0	0	0	0
Amortization of prior service cost	0	0
Defined Benefit Plan, Purchases, Sales, and Settlements		0	0	0
Recognized net actuarial (gain) loss	45	55	135	165
Benefit cost	133	138	399	414
Directors Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Director Providing Service To Company			10 years
Components of Net Cost
Service cost	0	0	0	0
Interest cost	4	4	12	12
Expected return on plan assets	0	0	0	0
Amortization of transition amount	0	0	0	0
Recognized (gain) loss due to curtailments	0	0	0	0
Recognized net actuarial (gain) loss	(8)	(3)	(24)	(9)
Benefit cost	$ (4)	$ 1	$ (12)	$ 3