Long-Term Debt, Interest Rate Swap and Capitalized Lease Obligations (Schedule of Principal Payments of Long Term Debt Instruments) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Less deferred financing costs, net	$ 1,884,000	$ 2,273,000
2018	11,902,000
2019	9,463,000
2020	8,052,000
2021	58,690,000
Total	$ 88,107,000	$ 80,081,000