Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2016	Aug. 29, 2015	Aug. 29, 2015	Sep. 30, 2016	Dec. 31, 2015
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 4,599,000			$ 4,599,000
Real Estate Inventory, Capitalized Costs Incurred	2,100,000	$ 1,500,000	$ 5,100,000	7,500,000
Real Estate [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	500,000			500,000
Deferred Compensation, Share-based Payments [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	5,100,000			5,100,000
Additional Paid-in Capital [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	4,381,000			4,381,000
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	218,000			218,000
Accounting Standards Update 2016-09 [Member]
Reclassification Of Prepaid Expenses And Other Assets to Loans Payable					$ 385,000
Accounting Standards Update 2016-09 [Member] | Real Estate [Member] | Adjustment [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	500,000			500,000
Accounting Standards Update 2016-09 [Member] | Deferred Compensation, Share-based Payments [Member] | Adjustment [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	5,100,000			5,100,000
Accounting Standards Update 2016-09 [Member] | Additional Paid-in Capital [Member] | Adjustment [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	4,400,000			4,400,000
Accounting Standards Update 2016-09 [Member] | Retained Earnings [Member] | Adjustment [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 200,000			$ 200,000
Trademarks and Customer Lists [Member]
Finite-Lived Intangible Asset, Useful Life				10 years