Retirement Plans (Pension Plans, Narrative) (Details) (USD $)	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Restructuring expense		$ 1,408,000	$ 760,000	$ 4,570,000
Company contributions		1,800,000	2,000,000	1,900,000
Estimated contributions to plans for 2014	2,400,000
Benefit payments		564,000	561,000	451,000
Estimated future contributions to non-qualified plans for 2013		710,000
Accumulated other comprehensive loss		16,400,000
Accumulated other comprehensive loss net of tax		14,000,000
Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of trust assets managed		70.00%
Liability increase for pension obligations			2,000,000	3,700,000
Company contributions		1,850,000	2,025,000
Accumulated other comprehensive loss net of tax		14,235,000	16,906,000
VIP Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit of average compensation		50.00%
Benefit of average compensation period		5 years
Cash surrender value		3,238,000	3,008,000
Liability increase for pension obligations			300,000	1,400,000
Company contributions		546,000	552,000
Accumulated other comprehensive loss net of tax		2,259,000	2,656,000
Directors Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Director years of service		10 years
Liability increase for pension obligations			10,000	26,000
Company contributions		18,000	9,000
Accumulated other comprehensive loss net of tax		(75,000)	(61,000)
Employee Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Restructuring expense			$ 760,000	$ 2,000,000
Common Stock [Member] | Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Long-term asset allocation target		80.00%
Debt Securities [Member] | Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Long-term asset allocation target		20.00%
Short-term investment funds		12.00%	8.00%
Large Cap Stock [Member] | Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Long-term asset allocation target		80.00%
Small Cap Stock [Member] | Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Long-term asset allocation target		30.00%
International Stock [Member] | Employee Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Long-term asset allocation target		30.00%