General and Basis of Presentation (Details)	1 Months Ended	3 Months Ended
	May 31, 2017 shares	Mar. 31, 2018 USD ($) Segment shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment		1
Disaggregation of Revenue [Line Items]
Revenue		$ 32,401,000	$ 23,110,000
Revenue from Contract with Customer [Abstract]
Accumulated deficit		(139,475,000)		$ (141,370,000)
Components of Accounts Receivable [Abstract]
Billed accounts receivable		18,152,000		11,736,000
Unbilled receivables		12,285,000		13,195,000
Allowance for doubtful accounts		(407,000)		(411,000)
Receivables - net		30,030,000		24,520,000
Contract with Customer, Liability [Abstract]
Contract liabilities		4,576,000		10,073,000
Remaining performance obligation		$ 85,500,000
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		3,100,000	3,900,000
Loss recognized in selling, general and administrative expenses		11,000	13,000
Balance of sold receivables		900,000
Deferred price related to sold receivables		100,000
Inventories [Abstract]
Gross inventory		6,300,000		15,000,000
Inventory valuation reserves		1,441,000		1,484,000
Software Development Costs [Abstract]
Capitalized software development costs		$ 1,800,000
Software development estimated useful life		2 years
Amortization expense		$ 200,000
Accumulated amortization		$ 400,000
Goodwill and Other Intangible Assets [Abstract]
Goodwill amortization period for income tax purposes		15 years
Accumulated Other Comprehensive Income [Abstract]
Cumulative foreign currency translation loss		$ (77,000)		(75,000)
Cumulative actuarial gain on pension liability adjustment		107,000		107,000
Accumulated other comprehensive income		30,000		32,000
ASC 606 [Member]
Revenue from Contract with Customer [Abstract]
Deferred revenue		(3,800,000)
Components of Accounts Receivable [Abstract]
Billed accounts receivable				11,736,000
Unbilled receivables				13,195,000
Allowance for doubtful accounts				(411,000)
Receivables - net				24,520,000
Contract with Customer, Liability [Abstract]
Contract liabilities				$ 10,073,000
Firm Fixed-Price [Member]
Disaggregation of Revenue [Line Items]
Revenue		24,921,000	18,696,000
Time-and-Materials [Member]
Disaggregation of Revenue [Line Items]
Revenue		3,767,000	2,467,000
Cost Plus Fixed Fee [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 3,713,000	$ 1,947,000
Sales Revenue [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		100.00%	100.00%
Sales Revenue [Member] | Firm Fixed-Price [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		76.90%	80.90%
Sales Revenue [Member] | Time-and-Materials [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		11.60%	10.70%
Sales Revenue [Member] | Cost Plus Fixed Fee [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		11.50%	8.40%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation percentage		81.60%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation percentage		18.30%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation, expected timing of satisfaction, period		0 years
Federal [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 29,711,000	$ 22,008,000
Federal [Member] | Sales Revenue [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		91.70%	95.20%
State & Local, and Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 2,690,000	$ 1,102,000
State & Local, and Commercial [Member] | Sales Revenue [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage		58.30%	4.80%
Restricted Stock Grants [Member]
Restricted Stock Grants [Abstract]
Restricted stock remained subject to vesting (in shares) | shares		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