Asset Dispositions and Discontinued Operations (Details) - Construction And Development Operations [Member] - USD ($) $ in Thousands	Mar. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	$ 307	$ 1,118
Other assets	587	634
Costs and earnings in excess of construction billings	618	3,887
Total assets	1,512	5,639
Accounts payable and accrued expenses	688	4,711
Construction billings in excess of cost and earnings	0	481
Total liabilities	688	5,192
Total net assets	$ 824	$ 447