General and Basis of Presentation (Details)	1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended
	May 31, 2017 shares	Jun. 30, 2018 USD ($) shares	Mar. 31, 2018	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Segment Unit shares	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment					1
Disaggregation of Revenue [Abstract]
Revenue		$ 34,943,000		$ 21,096,000	$ 67,344,000	$ 44,206,000
Components of Accounts Receivable [Abstract]
Billed accounts receivable		9,691,000			9,691,000		$ 11,736,000
Unbilled receivables		9,513,000			9,513,000		13,195,000
Allowance for doubtful accounts		(388,000)			(388,000)		(411,000)
Receivables - net		18,816,000			18,816,000		24,520,000
Contract with Customer, Liability [Abstract]
Contract liabilities		4,451,000			4,451,000		10,073,000
Revenue, Performance Obligation [Abstract]
Remaining performance obligation		70,200,000			$ 70,200,000
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		2,000,000		4,300,000	5,100,000	8,200,000
Loss recognized in selling, general and administrative expenses		7,000		16,000	18,000	29,000
Balance of sold receivables					1,000,000		0
Deferred price related to sold receivables					100,000
Inventories [Abstract]
Gross inventory		4,100,000			4,100,000		15,000,000
Inventory valuation reserves		927,000			927,000		1,484,000
Software Development Costs [Abstract]
Capitalized software development costs		2,300,000			2,300,000
Software development estimated useful life			2 years
Amortization expense		200,000		0	400,000
Accumulated amortization		700,000			$ 700,000
Goodwill [Abstract]
Number of reporting units | Unit					3
Goodwill amortization period for income tax purposes					15 years
Accumulated Other Comprehensive Income [Abstract]
Cumulative foreign currency translation loss		(82,000)			$ (82,000)		(75,000)
Cumulative actuarial gain on pension liability adjustment		107,000			107,000		107,000
Accumulated other comprehensive income		25,000			25,000		32,000
ASC 606 [Member]
Revenue from Contract with Customer [Abstract]
Contract liabilities		(3,800,000)			(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 [Abstract]
Revenue		28,173,000		16,772,000	53,094,000	35,468,000
Time-and-Materials [Member]
Disaggregation of Revenue [Abstract]
Revenue		4,089,000		2,663,000	7,856,000	5,130,000
Cost Plus Fixed Fee [Member]
Disaggregation of Revenue [Abstract]
Revenue		$ 2,681,000		1,661,000	$ 6,394,000	3,608,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation percentage		62.10%			62.10%
Remaining performance obligation, expected timing of satisfaction, period		6 months			6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation percentage		37.90%			37.90%
Remaining performance obligation, expected timing of satisfaction, period
Federal [Member]
Disaggregation of Revenue [Abstract]
Revenue		$ 32,858,000		19,674,000	$ 62,569,000	41,682,000
State & Local, and Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue		$ 2,085,000		$ 1,422,000	$ 4,775,000	$ 2,524,000
Restricted Stock Grants [Member]
Restricted Stock Grants [Abstract]
Restricted stock remained subject to vesting (in shares) | shares		2,467,500			2,467,500
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