Business Combination (Details) - USD ($)		12 Months Ended
	Sep. 02, 2016	Dec. 31, 2016	Dec. 31, 2015
PTF Acquisition [Abstract]
Date of acquisition	Sep. 02, 2016
Weighted average useful life of acquired intangible assets	10 years
Revenues from operations		$ 20,891,000	$ 20,713,000
Assets Acquired and Liabilities Assumed [Abstract]
Purchase consideration	$ 295,000	295,000	0
Net assets acquired: [Abstract]
Current assets	45,000	45,000	0
Current liabilities	(45,000)
Net assets acquired	299,000
Bargain purchase gain	(4,000)	(4,000)	0
Income (Loss) [Member]
PTF Acquisition [Abstract]
Loss attributable to acquisition		(57,000)
General and Administrative Expense [Member]
PTF Acquisition [Abstract]
Acquistion costs		38,000
PTF Inc. [Member]
Net assets acquired: [Abstract]
Fixed assets	85,000
Intangible assets	$ 214,000
Historical [Abstract]
Historical revenue		21,129,000	21,443,000
Historical net income (loss)		$ 136,000	$ (752,000)
Historical basic net income (loss) per share		$ 0.05	$ (0.29)
Historical diluted net income (loss) per share		$ 0.05	$ (0.29)
Pro Forma Adjustments [Abstract]
Revenue		$ 0	$ 0
Net income (loss)		$ 25,000	$ (55,000)
Basic net income (loss) per share (in dollars per share)		$ 0.01	$ (0.01)
Diluted net income (loss) per share (in dollars per share)		$ 0.01	$ (0.01)
Pro Forma [Abstract]
Revenue		$ 21,129,000	$ 21,443,000
Net income (loss)		$ 161,000	$ (807,000)
Basic net income (loss) per share (in dollars per share)		$ 0.06	$ (0.30)
Diluted net income (loss) per share (in dollars per share)		$ 0.06	$ (0.30)
PTF Inc. [Member] | Sales [Member]
PTF Acquisition [Abstract]
Revenues from operations		$ 200,000