Debt (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	4 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2014	Mar. 31, 2016	Dec. 31, 2003	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Third party debt, non-current				$ 0		$ 2,500
Street Capital Loan, Description				The Company’s Related Party Debt (the “Street Capital Loan”), which is due on demand, was originally entered into in 2003 and accrued interest at 10% per annum compounded quarterly from the date funds were advanced. The Street Capital Loan is secured by the assets of the Company. In 2014, following Street Capital Group Inc.’s (“Street Capital”) distribution of its ownership interest in HGI to Street Capital shareholders as a dividend in kind, the unpaid balance of the Street Capital Loan began accruing interest at a rate per annum equal to the lesser of the Wall St. Journal (“WSJ”) prime rate + 2.0%, or the maximum rate allowable by law. As of June 30, 2016 and December 31, 2015, the interest rate on the loan was 5.50%. Please see Note 10 for further discussion of transactions with Street Capital.
Proceeds from debt payable to related party				$ 404	$ 775
Executive Officers [Member]
Debt Instrument [Line Items]
Related Party Debt, Interest rate		10.00%
Proceeds from debt payable to related party		$ 400
Related party debt, maturity period		90 days
Wall St. Journal ("WSJ") prime rate
Debt Instrument [Line Items]
Interest rate per annum				2.00%		2.00%	2.00%
Street Capital Loan [Member]
Debt Instrument [Line Items]
Related Party Debt, Interest rate			10.00%	5.50%		5.50%
Other Third Party Debt [Member]
Debt Instrument [Line Items]
Third party debt, non-current	$ 2,500						$ 2,500
Debt Instrument, Interest Rate, Stated Percentage	6.00%	6.00%					6.00%
Debt Instrument, Maturity Date	Jan. 15, 2016	Jan. 15, 2017					Jan. 15, 2015