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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 |

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Description of the methodology for computing depreciation for classes of depreciable assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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