Related Party Transactions (Narrative) (Details) - USD ($)	1 Months Ended		3 Months Ended		4 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2003	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Outstanding principal repayment amount						$ 1,323,000	$ 2,419,000
Related party debt	$ 1,090,000		$ 1,090,000			1,090,000		$ 1,721,000
Proceeds from debt payable to related party						1,099,000	775,000
Accrued interest paid						167,000	178,000
Repayment of outstanding principal						2,500,000	525,000
Related party debt, interest expense						$ 54,000	$ 66,000
Street Capital [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction						Beginning in 2004, HGI and Street Capital entered into successive annual management services agreements (collectively, the “Agreement”). Under the terms of the Agreement, HGI agreed to pay Street Capital for ongoing management services provided to HGI by Street Capital personnel. Refer to Note 14 of the Annual Report on Form 10-K filed with the SEC on March 17, 2016 for further detail on the Agreement. In 2013, Street Capital announced its plan to dispose of its interest in HGI, and on March 20, 2014, Street Capital declared a dividend in kind, consisting of Street Capital’s distribution of its majority interest in HGI to Street Capital shareholders. The dividend was paid on April 30, 2014 to shareholders of record as of April 1, 2014. Following this disposition, the Company and Street Capital entered into a replacement management services agreement (the “Services Agreement”). Under the terms of the Services Agreement, Street Capital remained as external manager and continued to provide the same services, at similar rates, until the Services Agreement was terminated effective August 31, 2015, as described more fully in the Current Report on Form 8-K filed with the SEC on September 1, 2015.
Trust [Member]
Related Party Transaction [Line Items]
Proceeds from debt payable to related party				$ 400,000
Related Party Debt, Interest rate				10.00%
Related party debt, maturity period				90 days
Accrued interest paid		$ 8,000
Affiliated Entity and Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Related party debt	600,000		600,000			$ 600,000		0
Proceeds from debt payable to related party			$ 700,000
Related Party Debt, Interest rate			10.00%
Related party debt, maturity period			180 days
Repayment of outstanding principal	100,000
Related party debt, interest expense			$ 7,000			7,000
Street Capital Loan [Member]
Related Party Transaction [Line Items]
Outstanding principal repayment amount			800,000
Related Party Accrued Interest	500,000		500,000			500,000
Related party debt	$ 1,000,000		1,000,000			$ 1,000,000		$ 1,700,000
Related Party Debt, Interest rate					10.00%	4.50%		5.50%
Repayment of outstanding principal			$ 800,000