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STOCKHOLDERS' EQUITY - Narrative (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jun. 16, 2023 | Jun. 01, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  |  |  | 3 years 8 months 12 days |
Fair value of stock awards vested |  |  | $ 223 |  | $ 5,279 |
Stock Options |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Stock-based compensation expense |  |  | 126 | $ 89 | 374 | $ 122
Unrecognized stock-based compensation expense, stock options |  |  | 1,724 |  | 1,724 |
Aggregate intrinsic value of options exercised |  |  | 1,302 |  | 1,302 |
Restricted Stock Awards, Restricted Stock Units And Performance Stock Units |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Stock-based compensation expense |  |  | 2,112 | 2,225 | 6,007 | 5,204
Restricted Stock |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation expense |  |  | 12 |  | 12 |
Restricted Stock Unit |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation expense |  |  | 6,344 |  | 6,344 |
Performance Stock Unit |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation expense |  |  | 5,655 |  | $ 5,655 |
Market-based Performance Stock Units |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Weighted average fair value of market-based performance (in dollars per share) |  |  |  |  | $ 83.16 |
Risk-free interest rate |  |  |  |  | 4.31% |
Expected volatility |  |  |  |  | 34.90% |
Minimum | Restricted Stock | Non Employee Director |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |
Minimum | Restricted Stock Unit | Non Employee Director |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award service period |  |  |  |  | 3 years |
Maximum | Restricted Stock | Non Employee Director |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award vesting period |  |  |  |  | 5 years |
Maximum | Restricted Stock Unit | Non Employee Director |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award service period |  |  |  |  | 5 years |
Weighted average | Restricted Stock |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  |  |  | 8 months 12 days |
Weighted average | Restricted Stock Unit |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  |  |  | 2 years 4 months 24 days |
Weighted average | Performance Stock Unit |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  |  |  | 1 year 8 months 12 days |
2016 Plan |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Expiration period |  |  |  |  | 10 years |
2016 Plan | Minimum |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award vesting period |  |  |  |  | 1 year |
2016 Plan | Maximum |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Award vesting period |  |  |  |  | 5 years |
Amended and Restated 1997 Employee Stock Purchase Plan |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Stock-based compensation expense |  |  | $ 120 | $ 97 | $ 318 | $ 262
Class A Common Stock |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Number of shares issued (in shares) | 6,053,000 |  |  |  | 6,053,000 |
Public offering price (in dollars per share) | $ 85.50 |  |  |  |  |
Net proceeds | $ 496,231 |  |  |  |  |
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) |  |  | 625,000 |  | 625,000 |
Class A Common Stock | 2006 Incentive Plan |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Common stock, additional authorized shares (in shares) |  |  |  |  | 2,723,000 |
Class A Common Stock | Amended and Restated 1997 Employee Stock Purchase Plan |  |  |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |  |  |
Common stock, additional authorized shares (in shares) |  | 400,000 |  |  |  |
Number of shares available for future grant (in shares) |  |  | 444,000 |  | 444,000 |

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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://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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