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Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Nieco Acquisition (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Sep. 05, 2012
as initially reported
Oct. 31, 2012
Nieco Corporation [Member]
Oct. 31, 2012
Nieco Corporation [Member]
as initially reported
Oct. 31, 2012
Nieco Corporation [Member]
Scenario, Adjustment [Member]
Business Acquisition [Line Items]          
Cash     $ 140 $ 140 $ 0
Current assets 4,011   4,011   0
Property, plant and equipment 268   268   0
Goodwill 18,931   18,855   76
Other intangibles 5,620   5,620   0
Current liabilities 1,836   (1,836)   0
Other non-current liabilities 3,134   (3,058)   76
Consideration paid at closing 24,000 28,000 24,000   0
Contingent consideration 3,134   3,058   76
Net assets acquired and liabilities assumed $ 27,134   $ 27,058   $ 76