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Long-term Debt - Schedule of Notes Payable (Details) - Other Notes Payable [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Notes payable $ 55.8 $ 39.2
Notes Payable, Real Estate Sale / Leaseback Financing [Member]    
Debt Instrument [Line Items]    
Notes payable $ 48.2 $ 28.0
Effective interest rate (percent) 7.50% 11.20%
Notes Payable, 7.8% Acquisition Financing Notes [Member]    
Debt Instrument [Line Items]    
Notes payable $ 0.0 $ 1.3
Effective interest rate (percent) 7.80% 7.80%
Notes Payable, LIBOR plus 2.5% Construction Financing [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Notes payable $ 7.4 $ 9.6
Effective interest rate (percent) 3.10% 2.70%
Spread on variable rate (percent) 2.50% 2.50%
Notes Payable, 6.80% Financing [Member]    
Debt Instrument [Line Items]    
Notes payable $ 0.2 $ 0.3
Effective interest rate (percent) 6.80% 6.80%