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STOCK-BASED COMPENSATION (Details Narrative) - USD ($)			1 Months Ended					12 Months Ended
	Mar. 22, 2018	Mar. 09, 2017	Mar. 31, 2018	Jan. 31, 2018	Mar. 31, 2017	Jan. 31, 2017	Aug. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Stock-based compensation								$ 718,000	$ 946,000
Stock-based compensation - RSUs								$ 524,000	$ 550,000
Long Term Incentive Plan [Member]
Number of shares authorized under plan								600,000
Number of shares available for grant								119,910
Maximum number of shares to be granted as incentive stock								200,000
Performance Equity Plan 2009 [Member]
Number of shares authorized under plan								500,000
Number of shares available for grant								211,175
Ownership greater than (percent) for incentive stock options								10.00%
ExercisablePriceOfIncentiveStockOptionsForMajorityShareholderPercent								110.00%
Stock Option Plans [Member]
Common stock issued upon cashless exercise of options (in shares)									25,000
Number of shares received in cashless exercise									21,666
Fair value of shares received for cashless exercise of stock options									$ 202,580
Intrinsic value of stock options exercised									31,300
Fair value of options vested									82,000
Restricted Stock Units (RSUs) [Member] | Director [Member]
Restricted stock units granted				58,578		59,395
Vesting period				1 year		1 year
Stock Awards [Member] | Selling, General and Administrative Expenses [Member]
Stock-based compensation								$ 0	219,000
Stock Awards [Member] | Cost of Sales [Member]
Stock-based compensation								$ 0	$ 46,300
Stock Awards [Member] | Employees [Member]
Number of common shares granted			68,764		73,060		98,645	5,130	5,550
Stock awards forfeited (shares)			12,330		12,330		9,130
Number of shares returned for employee's withholding taxes (shares)	7,552	4,525
Value of shares returned for employee's withholding taxes	$ 62,000	$ 33,000
Stock Awards [Member] | Employees [Member] | Selling, General and Administrative Expenses [Member]
Stock-based compensation								$ 10,000	$ 13,300
Stock Awards [Member] | Employees [Member] | Cost of Sales [Member]
Stock-based compensation								36,000	$ 37,500
Stock Awards [Member] | Employees [Member] | Selling, General and Administrative Expenses [Member]
Stock-based compensation								88,100
Stock Awards [Member] | Employees [Member] | Cost of Sales [Member]
Stock-based compensation								$ 18,400

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Number of share options exercised for no cash during the current period.

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Represent the maximum number of shares to be granted as incentive stock.

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The number of common shares received in a cashless exercise of stock options.

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Fair value of share-based awards of cashless exercises of stock options.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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