SHAREHOLDERS' EQUITY - Equity Distribution Agreements (Details) - Private placement - USD ($) $ in Thousands	8 Months Ended
Sep. 30, 2018	Jan. 31, 2018
Equity incentive plans
Common stock issued in offering		$ 30,000
Shares sold in offering (in shares)	1,590,935
Aggregate sales price	$ 20,411
Payments for commissions and offering related expenses	$ 502

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- Definition

The amount of cash paid for commissions during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585

+ Details

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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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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.

+ Details

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- Details

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