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Discontinued Operations (Details) (USD $)
3 Months Ended 6 Months Ended 2 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
May 31, 2013
Fenco [Member]
May 06, 2011
Fapco [Member]
Business Acquisition [Line Items]            
Direct ownership interest acquired (in hundredths)           1.00%
FAPL's ownership interest prior to acquisition (in hundredths)           99.00%
Combined direct and indirect ownership interest subsequent to acquisition (in hundredths)           100.00%
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Income from discontinued operations $ 0 $ 0 $ 0 $ 100,877,000    
Gain from deconsolidation of Fenco         118,095,000  
Net sales         14,140,000  
Operating losses         5,910,000  
Income tax benefit from discontinued operations         1,374,000  
Loss in connection with guarantee of obligations to Fenco suppliers         20,464,000  
Income tax benefit from discontinued operations related to guarantee of obligations to certain Fenco suppliers         $ 9,156,000