Retirement Plans (Periodic Pension Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Total recognized in other Comprehensive Income	$ 658	$ 5,586	$ 171
Employee Plan [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net loss (gain)	2,895	7,060
Prior service cost	0	0
Amortization of (loss) gain	(2,184)	(3,091)
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	711	3,969
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Prior service cost	0	0
Net actuarial loss (gain)	1,397	1,423
Net periodic pension cost	1,397	1,423
Projected benefit obligation	32,840	29,583	27,080
Accumulated benefit obligation	32,840	29,583
Fair value of plan assets	16,875	14,808	17,737
Components of Net Cost
Service cost	0	0
Interest cost	1,299	1,370
Expected return on plan assets	979	1,107
Amortization of transition amount	0	0
Recognized (gain) loss due to curtailments	0	0
Amortization of prior service cost	0	0
Recognized net actuarial loss	2,184	3,091
Benefit cost	2,504	3,354
Estimated Future Benefit Payments
FYE 01-31-2014	1,358
FYE 01-31-2015	1,949
FYE 01-31-2016	1,951
FYE 01-31-2017	2,632
FYE 01-31-2018	1,435
FYE 01-31-2019 to 2023	9,022
Total	18,347
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	4.00%	4.50%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	4.50%	5.50%
Expected return on plan assets	6.50%	6.50%
VIP Retirement Plan [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net loss (gain)	175	1,622
Prior service cost	0	0
Amortization of (loss) gain	(205)	(51)
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(30)	1,571
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Prior service cost	0	0
Net actuarial loss (gain)	222	205
Net periodic pension cost	222	205
Projected benefit obligation	8,054	8,079	6,529
Accumulated benefit obligation	8,054	8,079
Fair value of plan assets	0	0	0
Components of Net Cost
Service cost	0	0
Interest cost	352	379
Expected return on plan assets	0	0
Amortization of transition amount	0	0
Recognized (gain) loss due to curtailments	0	0
Amortization of prior service cost	0	0
Recognized net actuarial loss	205	51
Benefit cost	557	430
Estimated Future Benefit Payments
FYE 01-31-2014	570
FYE 01-31-2015	345
FYE 01-31-2016	344
FYE 01-31-2017	330
FYE 01-31-2018	315
FYE 01-31-2019 to 2023	1,786
Total	3,690
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	4.25%	4.50%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	4.50%	6.00%
Directors Plan [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net loss (gain)	(23)	7
Prior service cost	0	0
Amortization of (loss) gain	0	39
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(23)	46
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Prior service cost	0	0
Net actuarial loss (gain)	(14)	0
Net periodic pension cost	(14)	0
Projected benefit obligation	468	480	450
Accumulated benefit obligation	468	480
Fair value of plan assets	0	0	0
Components of Net Cost
Service cost	0	0
Interest cost	20	23
Expected return on plan assets	0	0
Amortization of transition amount	0	0
Recognized (gain) loss due to curtailments	0	0
Recognized net actuarial loss	0	(39)
Benefit cost	20	(16)
Estimated Future Benefit Payments
FYE 01-31-2014	61
FYE 01-31-2015	56
FYE 01-31-2016	51
FYE 01-31-2017	46
FYE 01-31-2018	41
FYE 01-31-2019 to 2023	139
Total	$ 394
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	4.00%	4.50%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	4.50%	5.50%