Real Estate Inventory (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2015	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Real Estate [Line Items]
Real estate inventory, selling price	$ 4,900,000		$ 4,100,000
Real Estate, Inventory Pre Write-down Carrying Value					$ 6,500,000
Real Estate, Inventory Post Write-down Carrying Value		$ 3,700,000			3,700,000
Real estate inventory write-down				$ 0	2,748,000
Lease agreement term				5 years
Annual rental payments				$ 700,000
Rental income				$ 300,000	0
Sale of real estate inventory		4,100,000
Closing costs on sale of real estate inventory		300,000
Gross profit realized on sale of real estate inventory		$ 100,000
Approximations [Member]
Real Estate [Line Items]
Real estate inventory write-down					$ 2,700,000