Investment in Unconsolidated Entities - Schedule of Components of Investment In Unconsolidated Entities(Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 16,778	$ 16,912
Equity basis of the joint venture investments
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	(4,587)	(4,733)
Cost of the joint venture investments in excess of the joint venture book value
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ (21,365)	$ (21,645)