Cash received on stock transaction after deduction of issuance costs.

No definition available.

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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

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

+ Details

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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 share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&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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SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	12 Months Ended
	Jan. 23, 2018	Mar. 08, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Stock options granted in period (in shares)			738,893	449,537	2,176,330
Grants in period, weighted average exercise price (in dollars per share)			$ 2.34	$ 2.13	$ 6.02
Subsequent Event
Subsequent Event [Line Items]
Grants in period, weighted average exercise price (in dollars per share)	$ 1.70
Employee Stock Option
Subsequent Event [Line Items]
Stock options granted in period (in shares)			740,000	450,000
Employee Stock Option \| Subsequent Event
Subsequent Event [Line Items]
Stock options granted in period (in shares)	420,000
Employee Stock Option \| Share-based Compensation Award, Tranche One \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	50.00%
Employee Stock Option \| Share-based Compensation Award, Tranche Two \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	25.00%
Employee Stock Option \| Share-based Compensation Award, Tranche Three \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	25.00%
Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Shares granted in share-based compensation awards (in shares)			1,390,000	1,210,000	280,000
Restricted Stock Units (RSUs) \| Subsequent Event
Subsequent Event [Line Items]
Shares granted in share-based compensation awards (in shares)	880,000
Restricted Stock Units (RSUs) \| Share-based Compensation Award, Tranche Four \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	50.00%
Restricted Stock Units (RSUs) \| Share-based Compensation Award, Tranche Five \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	25.00%
Restricted Stock Units (RSUs) \| Share-based Compensation Award, Tranche Six \| Subsequent Event
Subsequent Event [Line Items]
Award vesting rights, percentage	25.00%
At The Market Sale Of Stock
Subsequent Event [Line Items]
Sale of stock, number of shares issued (in shares)			200,225	1,275,908
Sale of stock consideration received			$ 14,550	$ 540	$ 2,940
At The Market Sale Of Stock \| Subsequent Event
Subsequent Event [Line Items]
Sale of stock, number of shares issued (in shares)		390,000
Sale of stock consideration received		$ 650