Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Taxes [Abstract]
Income tax (provision) benefit	$ (139,000)	$ (14,000)	$ (318,000)	$ (23,000)
Deferred income taxes (Note 7)	3,517,000		3,517,000		$ 3,391,000
Unrecognized tax benefits	661,000		661,000		762,000
Interest and penalties	$ 250,000		$ 250,000		$ 233,000