Property and Equipment - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, net of accumulated depreciation	$ 13,264,000		$ 13,264,000		$ 13,786,000
Other liabilities	1,076,000		1,076,000		$ 821,000
Depreciation	1,013,000	$ 838,000	3,074,000	$ 2,394,000
Eliminated accumulated depreciation expense	626,000		626,000
Property plant and equipment sold in divestiture	$ 2,000,000		$ 2,000,000
Capital Lease Obligations
Property, Plant and Equipment [Line Items]
Capital leases interest rate percentage	12.00%		12.00%
Assets Held under Capital Leases
Property, Plant and Equipment [Line Items]
Property and equipment, net of accumulated depreciation	$ 427,000		$ 427,000
Other liabilities	8,600		8,600
Leasehold Improvements Paid by Others
Property, Plant and Equipment [Line Items]
Property and equipment, net of accumulated depreciation	$ 1,000,000		$ 1,000,000