Real Estate Inventory (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Real Estate [Abstract]
Real estate inventory, selling price		$ 4,100,000
Lease agreement term	5 years
Rental income	$ 0	$ 100,000

Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_LessorLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration