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SHARE BASED PAYMENTS - Schedule of restricted stock activity (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Shares
Nonvested Shares, Granted (in shares) | shares
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	$ 0
Weighted Average Grant Date Fair Value, Vested (in dollars per share)	$ 3.31
Restricted stock
Shares
Nonvested Shares, beginning balance (in shares) | shares	630
Nonvested Shares, Granted (in shares) | shares	201
Nonvested Shares, Vested (in shares) | shares	(291)
Nonvested Shares, Forfeited (in shares) | shares	(9)
Nonvested Shares, ending balance (in shares) | shares	531
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, beginning balance (in dollars per share)	$ 4.15
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	45.56
Weighted Average Grant Date Fair Value, Vested (in dollars per share)	4.39
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share)	18.54
Weighted Average Grant Date Fair Value, ending balance (in dollars per share)	$ 20.40

X

- Definition

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

+ References

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ 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 (d)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Number of non-vested options outstanding.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Number of non-vested options forfeited.

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- Definition

Weighted average grant-date fair value of non-vested options forfeited.

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Weighted average grant-date fair value of options vested.

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