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Long term Debt (Narrative) (Details) - USD ($)
12 Months Ended
Jun. 01, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Future maturities of long term debt in 2016   $ 18,881,000
Future maturities of long term debt in 2017   1,158,785,000
Future maturities of long term debt in 2018   13,554,000
Future maturities of long term debt in 2019   14,233,000
Future maturities of long term debt in 2020   14,988,000
Thereafter   $ 1,839,034,000
Capital lease duration   25 years
Committed Credit Facility [Member] | Scenario, Forecast [Member]    
Debt Instrument [Line Items]    
Interest rate increase 1.00%  
Committed Credit Facility [Member] | Subsequent Event [Member] | Scenario, Forecast [Member]    
Debt Instrument [Line Items]    
Interest rate increase 1.00%