SUBSEQUENT EVENTS - Stock Option Agreements (Details) - Subsequent Event - 2013 Plan - Employee	Oct. 29, 2019 employee $ / shares shares	Oct. 09, 2019 employee $ / shares shares
Subsequent Event [Line Items]
Number of employees granted with options \| employee	1	1
Options granted (in shares) \| shares	125,000	75,000
Exercise price of options (in dollars per share) \| $ / shares	$ 1.00	$ 1.13
Term of stock option	5 years	5 years
Year 1
Subsequent Event [Line Items]
Vesting award percentage	25.00%	25.00%
Year 2
Subsequent Event [Line Items]
Vesting award percentage	25.00%	25.00%
Year 3
Subsequent Event [Line Items]
Vesting award percentage	25.00%	25.00%
Year 4
Subsequent Event [Line Items]
Vesting award percentage	25.00%	25.00%

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

No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Employees Granted Options

+ References

No definition available.

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