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Discontinued Operations and Deconsolidation of Fenco (Details) - USD ($)
 2 Months Ended 12 Months Ended
May 31, 2013
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
May 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Income from discontinued operations   $ 0 $ 0 $ 100,877,000  
Fenco [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gain from deconsolidation of Fenco $ 118,095,000        
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        
Net sales 14,140,000        
Operating losses $ 5,910,000        
Fapco [Member]          
Business Acquisition [Line Items]          
Direct ownership interest acquired         1.00%
FAPL's ownership interest prior to acquisition         99.00%
Combined direct and indirect ownership interest subsequent to acquisition         100.00%