Represents the number of grants that will be made on achieving specified percentage of performance target.

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Represents the number of grants that will be made if target goal are not achieved.

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Represents the number of days from termination of service under certain termination scenarios as defined in the award agreement for settlement of fully vested restricted stock unit.

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Number of Tranches.

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Represents the percentage of PSUs vesting expressed as a percentage of performance target.

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Represents the period of time of cumulative adjusted EBITDA, diluted earnings per share, and net profit performance target conditions for vesting of the PSU awards to occur.

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Value 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.

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Represents the fair value of restricted stock units granted during the period.

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Aggregate grant date fair value of equity instruments other than options.

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Volume weighted average stock price.

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Volume weighted average stock price threshold trailing days.

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Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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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.

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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.

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Price of a single share of a number of saleable stocks of a company.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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STOCKHOLDERS' EQUITY - Awards granted in 2021 (Details) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Feb. 23, 2021 USD ($) shares	Jan. 31, 2021 $ / shares	Jun. 30, 2021 tranche $ / shares shares
2021 Performance share award
STOCKHOLDERS' EQUITY
Granted (in shares)	895,836
Stock value \| $	$ 6.9
2020 Performance share award
STOCKHOLDERS' EQUITY
Granted (in shares)	438,244
Stock value \| $	$ 3.4
2019 Performance share award
STOCKHOLDERS' EQUITY
Granted (in shares)	181,916
Stock value \| $	$ 1.4
Special Performance Stock Unit
STOCKHOLDERS' EQUITY
Volume weighted average stock price threshold trailing days		20 days
Special Performance Stock Unit \| Tranche 5
STOCKHOLDERS' EQUITY
Weighted Average Stock Price (in dollars per share) \| $ / shares		$ 4
Special Performance Stock Unit \| Tranche 6
STOCKHOLDERS' EQUITY
Weighted Average Stock Price (in dollars per share) \| $ / shares		$ 8
RSU and PSU Units
STOCKHOLDERS' EQUITY
Price per share (in dollars per share) \| $ / shares			$ 7.70
Performance Vesting \| Members of management and executive officers
STOCKHOLDERS' EQUITY
Granted (in shares)	2,687,813
Number of tranches \| tranche			3
Awards to be granted if target not achieved (in shares)			0
Number of days from the termination of service for settlement of fully vested units			30 days
Period of cumulative adjusted EBITDA, diluted earnings per share, and net profit results to meet the performance target condition			3 years
Performance Vesting \| Members of management and executive officers \| Minimum
STOCKHOLDERS' EQUITY
PSUs vesting as a percentage of performance target			80.00%
Percentage of performance target			50.00%
Performance Vesting \| Members of management and executive officers \| Maximum
STOCKHOLDERS' EQUITY
PSUs vesting as a percentage of performance target			120.00%
Percentage of performance target			200.00%
2013 Equity Incentive Plan \| Members of management
STOCKHOLDERS' EQUITY
Granted (in shares)	2,687,813
Grant date fair value (in dollars) \| $	$ 20.7
Vesting period (in years)			3 years
2013 Equity Incentive Plan \| Restricted stock unit \| Members of management and executive officers
STOCKHOLDERS' EQUITY
Number of shares to be received for each unit			1
2013 Equity Incentive Plan \| Restricted stock unit \| Members of management
STOCKHOLDERS' EQUITY
Number of days from the termination of service for settlement of fully vested units			30 days
2013 Equity Incentive Plan \| Performance Vesting \| Members of management and executive officers
STOCKHOLDERS' EQUITY
Awards to be granted upon achieving 100% of performance target (in shares)			2,687,813
Class A common stock \| 2013 Equity Incentive Plan \| Stock options \| Board of Director
STOCKHOLDERS' EQUITY
Shares granted	124,054
Grant date fair value \| $	$ 0.9