Represents the percentage of awards other than options which vest annually on the anniversary date of the award.

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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-Publisher FASB
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ 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
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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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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STOCKHOLDERS' EQUITY - Restricted Stock (Details) - RSU - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
2016 Incentive Plan
Stock-based compensation
Vesting period			3 years
Percentage of awards other than options vesting on the annual anniversary date of the grant			33.33%
2016 Incentive Plan \| Employee
Stock-based compensation
Number of shares granted		4.2
Unrecognized compensation expense other than options		$ 6,500
Weighted average remaining vesting period		1 year 7 months 6 days
Fair value of grant (in dollars per share)		$ 1.29
2016 Incentive Plan \| Employee \| Minimum
Stock-based compensation
Fair value of grant (in dollars per share)		1.29
2016 Incentive Plan \| Employee \| Maximum
Stock-based compensation
Fair value of grant (in dollars per share)		$ 1.40
2016 Incentive Plan \| Non-employee director
Stock-based compensation
Vesting period			6 months
2020 Incentive Plan
Stock-based compensation
Vesting period	4 years
Percentage of awards other than options vesting on the annual anniversary date of the grant	25.00%
2020 Incentive Plan \| Minimum \| Tranche One
Stock-based compensation
Fair value of grant (in dollars per share)	$ 4.36
2020 Incentive Plan \| Maximum \| Tranche One
Stock-based compensation
Fair value of grant (in dollars per share)	$ 11.89
2020 Incentive Plan \| Employee
Stock-based compensation
Number of shares granted	0.9
Unrecognized compensation expense other than options	$ 5,600
2020 Incentive Plan \| Employee \| Tranche One
Stock-based compensation
Vesting period	4 years
Number of shares granted	0.4
Fair value of grant (in dollars per share)	$ 11.80
2020 Incentive Plan \| Employee \| Tranche Two
Stock-based compensation
Number of shares granted	0.2
Compensation expense recorded	$ 0
Fair value of grant (in dollars per share)	$ 11.89
2020 Incentive Plan \| Employee \| Tranche Three
Stock-based compensation
Vesting period	4 years
Number of shares granted	0.3
Fair value of grant (in dollars per share)	$ 6.48
2020 Incentive Plan \| Non-employee director
Stock-based compensation
Weighted average remaining vesting period	3 years