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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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General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

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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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of vesting of share-based compensation awards.

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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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STOCK COMPENSATION PLAN (Detail Textuals) - USD ($)	3 Months Ended		12 Months Ended
STOCK COMPENSATION PLAN (Detail Textuals) - USD ($)	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options (in shares)	0
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested stock options	$ 0		$ 0
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, description	Under the terms of the 2009 Plan, each option agreement cannot have an exercise price that is less than 100% of the fair value of the shares covered by the option on the date of grant. In the case of an ISO granted to any 10% stockholder, the exercise price shall not be less than 110% of the fair value of the shares covered by the option on the date of grant.In no event shall the exercise price of an option be less than the par value of the shares for which the option is exercisable. In no event shall the exercise period exceed ten years from the date of grant of the option, except, in the case of an ISO granted to a 10% stockholder, the exercise period shall not exceed five years from the date of grant
Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, exercise period from the grant date	10 years
Incentive stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, shares authorized, maximum	1,483,000
Compensation cost related to stock awards	$ 0	$ 0
Incentive stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, exercise period from the grant date	5 years
Incentive stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of exercise price over the fair value of the common stock	100.00%
Incentive stock options granted to any 10% stockholder \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of exercise price over the fair value of the common stock	110.00%
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, shares authorized, maximum	628,719
Unrecognized compensation cost related to non-vested stock options	$ 2,900,000
Compensation cost related to stock awards	$ 229,000	$ 293,000
Number of shares, Granted	106,423
Unrecognized compensation expense recognition period	2 years 7 months 17 days
Fair value of shares vested	$ 429,000
Restricted stock \| Non-employee directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost related to stock awards	$ 100,000
Number of shares, Granted	35,900
Vesting percentage	33.00%
Performance Restricted Share Units ("Prsus")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of PRSUs awarded			90,000
Additional PRSUs awarded	0
Directors' fees \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested stock options	$ 1,100,000
Unrecognized compensation expense recognition period	2 years 9 months