Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Accounting Policies (Details) [Line Items]
Interest Paid	$ 518,000	$ 900,000	$ 1,834,000	$ 2,822,000
Derivative Settlement on Interest Rate Swap	367,000	416,000	1,142,000	1,278,000
Income Taxes Paid			22,829,000	2,150,000
Unrecognized Tax Benefit	1,451,000		1,451,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	453,000		453,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 24,000		$ 24,000
Property, Plant and Equipment, Depreciation Methods			Depreciation is computed using the straight-line method.
Maximum Percentage of Equity Ownership Interest Which May be Considered for Equity Method of Accounting			20.00%
Building and Building Improvements [Member] | Minimum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life			15 years
Building and Building Improvements [Member] | Maximum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life			40 years
Fixtures And Equipment [Member] | Minimum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life			3 years
Fixtures And Equipment [Member] | Maximum [Member]
Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life			20 years