Retirement Plans (Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Change in Plan Assets
Company contributions	$ 1,600	$ 2,400	$ 1,800
Employee Plan [Member]
Change in Benefit Obligation
Benefit obligation at beg. of year	37,708	32,069
Service cost	0	0
Interest cost	$ 1,147	1,260
Participant contributions		0
Amendments		0
Actuarial losses (gains)	$ (4,256)	5,962
Plan settlement	(1,380)	(1,071)
Benefits paid	(560)	(512)
Benefit obligation at end of year	32,659	37,708	32,069
Change in Plan Assets
Fair value at beg. of year	21,187	18,168
Actual return on plan assets	(974)	2,172
Company contributions	1,575	2,430
Settlements	(1,380)	(1,071)
Benefits paid	(560)	(512)
Fair value at end of year	19,848	21,187	18,168
Unfunded status of the plan	(12,811)	(16,521)
Amounts Recognized in Statement of Financial Position
Current liabilities	0	0
Non-current liabilities	(12,811)	(16,521)
Accrued benefit cost	(12,811)	(16,521)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(12,811)	(16,521)
Accumulated other comp. loss (gain)	13,889	17,992
Net amount recognized	1,078	1,471
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Unrecognized net actuarial loss (gain)	13,889	17,992
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	13,889	17,992
VIP Retirement Plan [Member]
Change in Benefit Obligation
Benefit obligation at beg. of year	10,104	7,662
Service cost	0	0
Interest cost	$ 343	350
Participant contributions		0
Amendments		0
Actuarial losses (gains)	$ (1,209)	2,636
Plan settlement		0
Benefits paid	$ (537)	(544)
Benefit obligation at end of year	8,701	10,104	7,662
Change in Plan Assets
Fair value at beg. of year	0	0
Actual return on plan assets	0	0
Company contributions	$ 537	544
Settlements		0
Benefits paid	$ (537)	(544)
Fair value at end of year	0	0	0
Unfunded status of the plan	(8,701)	(10,104)
Amounts Recognized in Statement of Financial Position
Current liabilities	(593)	(613)
Non-current liabilities	(8,108)	(9,491)
Accrued benefit cost	(8,701)	(10,104)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(8,701)	(10,104)
Accumulated other comp. loss (gain)	3,023	4,716
Net amount recognized	(5,678)	(5,388)
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Unrecognized net actuarial loss (gain)	3,023	4,716
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	3,023	4,716
Directors Plan [Member]
Change in Benefit Obligation
Benefit obligation at beg. of year	428	439
Service cost	0	0
Interest cost	13	17
Participant contributions	0	0
Amendments	0	0
Actuarial losses (gains)	$ (107)	8
Plan settlement		0
Benefits paid	$ (54)	(36)
Benefit obligation at end of year	280	428	439
Change in Plan Assets
Fair value at beg. of year	0	0
Actual return on plan assets	0	0
Company contributions	$ 54	36
Settlements		0
Benefits paid	$ (54)	(36)
Fair value at end of year	0	0	$ 0
Unfunded status of the plan	(280)	(428)
Amounts Recognized in Statement of Financial Position
Current liabilities	(34)	0
Non-current liabilities	(246)	(428)
Accrued benefit cost	(280)	(428)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(280)	(428)
Accumulated other comp. loss (gain)	(144)	(37)
Net amount recognized	(424)	(465)
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Unrecognized net actuarial loss (gain)	(144)	(37)
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	$ (144)	$ (37)