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Long-Term Debt - Schedule Of Consolidated Interest Coverage Ratio (Details) - Line of Credit [Member] - February 2016 Amendment [Member]
Feb. 29, 2016
December 31, 2016 through and including March 31, 2017 [Member]  
Debt Instrument [Line Items]  
Minimum Consolidated Interest Coverage Ratio 2.75
June 30, 2017 and each fiscal quarter thereafter [Member]  
Debt Instrument [Line Items]  
Minimum Consolidated Interest Coverage Ratio 3