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STOCKHOLDERS' EQUITY - Narrative (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation, weighted average period			2 years 1 month 6 days
Fair value of stock awards vested	$ 814,000		$ 5,359,000
Stock Options
Limited Partners' Capital Account [Line Items]
Stock-based compensation expense	17,000	$ 0	33,000	$ 0
Unrecognized stock-based compensation expense, stock options	139,000		139,000
Aggregate intrinsic value of options exercised	1,156,000		1,467,000
Restricted Stock, Restricted Stock Units And Performance Stock Units
Limited Partners' Capital Account [Line Items]
Stock-based compensation expense	828,000	3,044,000	2,979,000	5,928,000
Restricted Stock
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation expense	58,000		$ 58,000
Restricted Stock | Non Employee Director
Limited Partners' Capital Account [Line Items]
Options, vesting period (in years)			3 years
Restricted Stock Unit
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation expense	5,543,000		$ 5,543,000
Performance Stock Unit
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation expense	6,882,000		$ 6,882,000
Weighted average | Restricted Stock
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation, weighted average period			1 year 6 months
Weighted average | Restricted Stock Unit
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation, weighted average period			1 year 10 months 24 days
Weighted average | Performance Stock Unit
Limited Partners' Capital Account [Line Items]
Unrecognized stock-based compensation, weighted average period			1 year 9 months 18 days
2016 Plan
Limited Partners' Capital Account [Line Items]
Options granted, term (in years)			10 years
2016 Plan | Minimum
Limited Partners' Capital Account [Line Items]
Options, vesting period (in years)			1 year
2016 Plan | Maximum
Limited Partners' Capital Account [Line Items]
Options, vesting period (in years)			4 years
Amended and Restated 1997 Employee Stock Purchase Plan
Limited Partners' Capital Account [Line Items]
Stock-based compensation expense	$ 93,000	$ 72,000	$ 166,000	$ 128,000
Class A Common Stock | 2016 Plan
Limited Partners' Capital Account [Line Items]
Common stock, authorized shares (in shares)	2,250,000		2,250,000
Number of shares available for future grant (in shares)	868,000		868,000
Class A Common Stock | 2006 Incentive Plan
Limited Partners' Capital Account [Line Items]
Common stock, additional authorized shares (in shares)			2,723,000

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