Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit	$ (280,889,000)	$ (280,889,000)	$ (270,468,000)
Real estate inventory write-down		2,748,000	0
Impairment charges		2,749,000
Goodwill impairment charges		2,688,000	0
HGP [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment charges	$ 2,688,000	2,688,000
Customer Network [Member] | HGP [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment charges		$ 2,700,000	$ 0