Accrued Expenses and Other Liabilities Accrued Expenses and Other Liabilities - Warranty (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Insurance Settlements Receivable	$ 1,202	$ 1,202	$ 0
Adjustment to warranty accrual		900
Estimated probable recoveries	600	600
Homebuilding Segment [Member]
Adjustment to warranty accrual	800	409	(1,065)	$ 0
Fee Building Segment [Member]
Adjustment to warranty accrual	$ 63	$ (95)	$ 0	$ 0