Organization, Business and Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Jan. 02, 2017	Dec. 31, 2016
Organization Consolidation and Presentation of Financial Statements [Line Items]
Operating Income (Loss)	$ 480	$ 3,307
Net Income (Loss) Attributable to Parent	$ 1,200	$ 1,987
Earnings Per Share, Diluted	$ 0.07	$ 0.1
Foreign Currency Transaction Gain (Loss), Realized		$ 200
Income Tax Expense (Benefit)	$ (359)	$ 1,249
Retained Earnings (Accumulated Deficit)	123,827			$ 123,345
Restatement Adjustment [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Income Tax Expense (Benefit)	$ 800
Retained Earnings (Accumulated Deficit)			$ 200
Contracts Accounted for under Percentage of Completion [Member] | Cost Estimate Revision [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Cost Estimate Revision Gross Margin Increase (Decrease) Percentage	0.40%	(0.60%)
Estimate Adjustment [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Operating Income (Loss)	$ 1,100	$ (1,500)
Net Income (Loss) Attributable to Parent	$ 600	$ (900)
Earnings Per Share, Diluted	$ 0.04	$ (0.05)