Long-Term Debt and Revolving Lines of Credit - Schedule of Financial Covenants (Details)	9 Months Ended
	Sep. 30, 2017 USD ($)
Debt Disclosure [Abstract]
Leverage ratio, actual	2.93
Covenant requirement, total leverage ratio	3.75
Debt service coverage ratio, actual	3.88
Minimum debt service coverage ratio	2.00
Covenant, liquidity balance, actual	$ 149,228,000
Debt instrument covenants minimum liquidity amount	$ 25,000,000