General and Basis of Presentation (Details)	1 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2017 shares	Jun. 30, 2017 USD ($) shares	Jun. 30, 2017 USD ($) Segment shares	Dec. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment			1
Accounts Receivable [Abstract]
Percentage of initial payment by factor of U.S. Federal government receivables			90.00%
Percentage of initial payment by factor of commercial prime contractors			85.00%
Maximum limit of sold receivables			$ 10,000,000
Sold receivables during the period		$ 4,300,000	8,200,000
Loss recognized in selling, general and administrative expenses		16,000	29,000
Balance of sold receivables			1,400,000
Deferred price related to sold receivables			200,000
Inventories [Abstract]
Gross inventory		10,600,000	10,600,000	$ 5,200,000
Inventory valuation reserves		1,683,000	1,683,000	1,672,000
Property, Plant and Equipment [Abstract]
Capitalized software development costs			$ 800,000
Software development estimated useful life			2 years
Goodwill and Other Intangible Assets [Abstract]
Estimated useful life of intangible asset			5 years
Goodwill amortization period for income tax purposes			15 years
Accumulated Other Comprehensive Income [Abstract]
Cumulative foreign currency translation loss		(81,000)	$ (81,000)	(82,000)
Cumulative actuarial gain on pension liability adjustment		107,000	107,000	107,000
Accumulated other comprehensive income		$ 26,000	$ 26,000	$ 25,000
Restricted Stock Grants [Member]
Restricted Stock Grants [Abstract]
Restricted stock remained subject to vesting | shares		3,753,750	3,753,750
Restricted stock vested on date of grant			25.00%
Restricted stock vest on anniversary of the date of grant			25.00%
Restricted Stock Grants [Member] | Executive Officers and Employees [Member]
Restricted Stock Grants [Abstract]
Restricted stock issued during the period (in shares) | shares	5,005,000