General and Basis of Presentation (Details)	1 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2017 shares	Sep. 30, 2017 USD ($) shares	Sep. 30, 2017 USD ($) Segment shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
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		$ 13,900,000	22,100,000
Loss recognized in selling, general and administrative expenses		49,000	78,000
Balance of sold receivables			5,500,000
Deferred price related to sold receivables			800,000
Inventories [Abstract]
Gross inventory		12,400,000	12,400,000		$ 5,200,000
Inventory valuation reserves		1,599,000	1,599,000		1,672,000
Property, Plant and Equipment [Abstract]
Capitalized software development costs			$ 1,111,000	$ 0
Software development estimated useful life			2 years
Amortization expense			$ 100,000
Goodwill and Other Intangible Assets [Abstract]
Goodwill amortization period for income tax purposes			15 years
Estimated useful life of intangible assets			5 years
Term of forecasted equal annual customer orders			5 years
Accumulated Other Comprehensive Income [Abstract]
Cumulative foreign currency translation loss		(75,000)	$ (75,000)		(82,000)
Cumulative actuarial gain on pension liability adjustment		107,000	107,000		107,000
Accumulated other comprehensive income		$ 32,000	$ 32,000		$ 25,000
Restricted Stock Grants [Member]
Restricted Stock Grants [Abstract]
Restricted stock remained subject to vesting (in shares) | shares		3,723,750	3,723,750
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