REVENUE - Impact of New Revenue Guidance on Financial Statement Line Items (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
Net Sales	$ 28,538		$ 54,985
Cost of Goods Sold	24,721	$ 26,769	48,140	$ 51,995
Gross Profit	3,817	3,365	6,845	6,457
Income from Operations	734	95	615	215
Income Before Income Taxes	525	(222)	233	(241)
Income Tax Expense	135	(206)	235	(211)
Net Income (Loss)	$ 390	$ (16)	$ (2)	$ (30)
Net Income (Loss) Per Common Share - Basic and Diluted	$ 0.14	$ (0.01)	$ 0.00	$ (0.01)
Assets
Inventories	$ 13,969		$ 13,969		$ 18,527	[1]
Contract Assets	6,547		6,547		6,459
Shareholders' Equity
Retained Earnings	5,268		5,268		$ 3,889	[1]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Loss			(2)	$ (30)
Change in Current Operating Items
Inventories			(594)	(1,169)
Contract Assets			(88)
Net Cash Provided by Operating Activities			2,741	$ 1,293
Pro-forma as of the previous accounting guidance was in effect
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
Net Sales	26,928		52,658
Cost of Goods Sold	23,106		45,836
Gross Profit	3,822		6,822
Income from Operations	739		592
Income Before Income Taxes	530		210
Income Tax Expense	135		235
Net Income (Loss)	$ 395		$ (25)
Net Income (Loss) Per Common Share - Basic and Diluted	$ 0.15		$ (0.01)
Assets
Inventories	$ 19,111		$ 19,111
Shareholders' Equity
Retained Earnings	$ 3,864		3,864
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Loss			(25)
Change in Current Operating Items
Inventories			658
Net Cash Provided by Operating Activities			$ 2,741

[1] The balance sheet at December 31, 2017 has been derived from the audited financial statements at that date