STOCK PLANS, Employee Stock Purchase Plan ("ESPP") (Details)	3 Months Ended
Mar. 31, 2019 USD ($) $ / shares shares
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Abstract]
Unrecognized compensation cost	$ 19,000
Weighted average period to recognize the unrecognized compensation	9 months
Recognized compensation cost	$ 6,000
Weighted average fair value at issuance date (in dollars per share) \| $ / shares	$ 2.57
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk free interest rate	2.67%
Expected dividend yield	0.00%
Expected life	1 year
Expected price volatility	8.47%
2016 Amended Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Abstract]
Shares authorized under plan (in shares) \| shares	295,277
Purchase price of stock in percentage for participation	85.00%
2016 Amended Employee Stock Purchase Plan [Member] \| Minimum [Member]
Employee Stock Purchase Plan [Abstract]
Eligibility employment period required for plan participation	90 days
2016 Amended Employee Stock Purchase Plan [Member] \| Maximum [Member]
Employee Stock Purchase Plan [Abstract]
Plan participation period	27 months
Percentage of employee compensation that can be withheld to purchase common stock	10.00%

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Employment period required for plan participation, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares authorized under the Employee Stock Purchase Plan (ESPP).

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Refers to the percentage of employee compensation that can be withheld to purchase common stock.

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- Definition

The participation periods implemented by the Employee Stock Purchase Plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Purchase price of stock as percentage of lower of the fair market value on the last trading day before the date of participation or the fair market value on the last trading day during the participation period.

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The weighted average fair value of shares at issuance date.

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- Definition

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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Weighted average expected volatility rate of share-based compensation awards.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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