Intangible Assets and Goodwill (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2011
Finite Lived Intangible Assets [Line Items]
Amortization expense, intangible assets		$ 260,000	$ 526,000
Impairment charge			2,749,000
Total net amortized intangible assets	$ 1,945,000	1,685,000	1,945,000	$ 5,220,000
Goodwill	6,158,000	6,158,000	6,158,000	8,846,000
Non cash impairment charge		0	2,688,000
HGP [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill	2,040,000	2,040,000	2,040,000	4,728,000	$ 4,700,000
Non cash impairment charge	2,700,000		2,688,000
Fair value of goodwill	2,000,000		2,000,000
Equity Partners [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill	573,000	573,000	573,000	573,000		$ 600,000
NLEX [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill	3,545,000	3,545,000	3,545,000	3,545,000
Customer Network [Member] | HGP [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense, intangible assets		20,000	266,000
Impairment charge	2,700,000		2,749,000
Total net amortized intangible assets	$ 178,000	$ 158,000	$ 178,000	$ 3,193,000