7. STOCKHOLDERS' EQUITY (Details) - Common Stock [Member] - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended
Mar. 31, 2020	Apr. 23, 2020	Jun. 30, 2020
Class of Stock [Line Items]
Number of shares repurchased	576,898	1,107,639	1,684,537
Average price paid per share	$ 2.28	$ 2.42	$ 2.37
Approximate value of shares that may yet be purchased	$ 8,686,000	$ 6,001,000
Plan expiration date	Jul. 31, 2020	Jul. 31, 2020

Approximate value of shares that may yet be purchased

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- Definition

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.

+ References

No definition available.

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- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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