Investment in Unconsolidated Joint Ventures (Temco Associates, LLC) (Details) - Temco Associates, LLC $ in Thousands	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Ownership percentage of partner in joint venture	50.00%
Cash balance of joint venture	$ 261
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Schedule of Equity Method Investments [Line Items]
Ownership percentage of partner in joint venture	50.00%