Equity-Method Investments - Schedule of Equity-Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Company’s (loss) income from investments in partially owned entities	$ (437)	$ 9	$ (324)	$ (1,342)
Investments in partially owned entities	$ 15,952		$ 15,952		$ 15,942
Total
Schedule of Equity Method Investments [Line Items]
Equity interest	49.00%		49.00%
Revenues	$ 13,338	13,606	$ 38,871	37,043
Operating (loss) income	(276)	(82)	381	(2,223)
Net (loss) income	(817)	(145)	50	(2,665)
Company’s (loss) income from investments in partially owned entities	(437)	9	(324)	(1,342)
CMAL
Schedule of Equity Method Investments [Line Items]
Revenues	9,561	10,236	28,886	28,503
Operating (loss) income	(891)	(154)	(1,066)	(3,184)
Net (loss) income	(1,062)	(138)	(1,327)	(3,277)
Company’s (loss) income from investments in partially owned entities	(538)	(45)	(824)	(1,642)
CMAH
Schedule of Equity Method Investments [Line Items]
Revenues	3,777	3,370	9,985	8,540
Operating (loss) income	615	72	1,447	961
Net (loss) income	245	(7)	1,377	612
Company’s (loss) income from investments in partially owned entities	101	$ 54	500	$ 300
Joint Venture
Schedule of Equity Method Investments [Line Items]
Investments in partially owned entities	$ 2,000		$ 2,000		$ 2,000