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REVISION OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Consolidated Statement of Changes in Stockholders' Equity (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2022
Sep. 30, 2022
Dec. 31, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE $ 330,750 $ 318,331 $ 327,271 $ 303,644 $ 303,644 $ 303,644 $ 303,644
Net income (loss) (2,922) 3,469 16,294 16,488 32,782 36,251 34,343
Stock-based compensation expense 2,558     124 460 5,469 6,595
Repurchase of shares of common stock (1,324)     (10) (24,669) (26,486) (26,543)
Exercise of options for common stock         50 50 50
Other comprehensive income, net of tax     7,896 7,971 2,275 18,277
Adjustment of redeemable noncontrolling interests to estimated redemption value (1,308)     (871) (1,907) (3,440) (5,616)
BALANCE 331,577 317,763 318,331 327,271 318,331 317,763 330,750
As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 333,772 318,651 327,312 303,680 303,680 303,680 303,680
Net income (loss)   3,407 16,573 16,493 33,066 36,473 37,329
Stock-based compensation expense       124 460 5,469 6,595
Repurchase of shares of common stock       (10) (24,669) (26,486) (26,543)
Exercise of options for common stock         50 50 50
Other comprehensive income, net of tax       7,896 7,971 2,275 18,277
Adjustment of redeemable noncontrolling interests to estimated redemption value       (871) (1,907) (3,440) (5,616)
BALANCE   318,021 318,651 327,312 318,651 318,021 333,772
Adjustments and Other Adjustments              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE (3,022) (320) (41) (36) (36) (36) (36)
Net income (loss)   62 (279) (5) (284) (222) (2,986)
BALANCE   (258) (320) (41) (320) (258) (3,022)
Adjustments              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
Net income (loss)             (3,217)
Other Adjustments              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
Net income (loss)             231
Preferred Stock | Convertible Preferred Stock              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 0   0 0 0 0 0
Net income (loss) 0     0      
Stock-based compensation expense 0     0      
Repurchase of shares of common stock 0     0      
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE 0     0     0
Common Stock | Common Stock Class A              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 10 9 9 9 9 9 9
Net income (loss) 0     0      
Stock-based compensation expense 0     0   1 1
Repurchase of shares of common stock 0     0      
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE 10 10 9 9 9 10 10
Common Stock | Common Stock Class A | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 10 9 9 9 9 9 9
Stock-based compensation expense           1 1
BALANCE   10 9 9 9 10 10
Common Stock | Common Stock Class B              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 3 3 3 3 3 3 3
Net income (loss) 0     0      
Stock-based compensation expense 0     0      
Repurchase of shares of common stock 0     0      
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE 3 3 3 3 3 3 3
Common Stock | Common Stock Class B | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 3 3 3 3 3 3 3
BALANCE   3 3 3 3 3 3
Common Stock | Common Stock Class C              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 2 2 2 2 2 2 2
Net income (loss) 0     0      
Stock-based compensation expense 0     0      
Repurchase of shares of common stock 0     0      
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE 2 2 2 2 2 2 2
Common Stock | Common Stock Class C | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 2 2 2 2 2 2 2
BALANCE   2 2 2 2 2 2
Common Stock | Common Stock Class D              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 34 33 37 37 37 37 37
Net income (loss) 0     0      
Stock-based compensation expense 0     0   1 1
Repurchase of shares of common stock 0     0 (4) (4) (4)
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE 34 34 33 37 33 34 34
Common Stock | Common Stock Class D | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 34 33 37 37 37 37 37
Stock-based compensation expense           1 1
Repurchase of shares of common stock         (4) (4) (4)
BALANCE   34 33 37 33 34 34
Accumulated Other Comprehensive Income              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 73,227 62,921 62,846 54,950 54,950 54,950 54,950
Other comprehensive income, net of tax       7,896 7,971 2,275 18,277
BALANCE 73,227 57,225 62,921 62,846 62,921 57,225 73,227
Accumulated Other Comprehensive Income | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 73,227 62,921 62,846 54,950 54,950 54,950 54,950
Other comprehensive income, net of tax       7,896 7,971 2,275 18,277
BALANCE   57,225 62,921 62,846 62,921 57,225 73,227
Additional Paid-In Capital              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 993,484 992,934 1,018,239 1,018,996 1,018,996 1,018,996 1,018,996
Net income (loss) 0     0      
Stock-based compensation expense 2,558     124 460 5,467 6,593
Repurchase of shares of common stock (1,324)     (10) (24,665) (26,482) (26,539)
Exercise of options for common stock         50 50 50
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value (1,308)     (871) (1,907) (3,440) (5,616)
BALANCE 996,644 994,591 992,934 1,018,239 992,934 994,591 993,484
Additional Paid-In Capital | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE 993,484 992,934 1,018,239 1,018,996 1,018,996 1,018,996 1,018,996
Stock-based compensation expense       124 460 5,467 6,593
Repurchase of shares of common stock       (10) (24,665) (26,482) (26,539)
Exercise of options for common stock         50 50 50
Adjustment of redeemable noncontrolling interests to estimated redemption value       (871) (1,907) (3,440) (5,616)
BALANCE   994,591 992,934 1,018,239 992,934 994,591 993,484
Accumulated Deficit              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE (736,010) (737,571) (753,865) (770,353) (770,353) (770,353) (770,353)
Net income (loss) (2,922)     16,488 32,782 36,251 34,343
Stock-based compensation expense 0     0      
Repurchase of shares of common stock 0     0      
Other comprehensive income, net of tax       0      
Adjustment of redeemable noncontrolling interests to estimated redemption value 0     0      
BALANCE (738,343) (734,102) (737,571) (753,865) (737,571) (734,102) (736,010)
Accumulated Deficit | As Previously Reported              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE (732,988) (737,251) (753,824) (770,317) (770,317) (770,317) (770,317)
Net income (loss)       16,493 33,066 36,473 37,329
BALANCE   (733,844) (737,251) (753,824) (737,251) (733,844) (732,988)
Accumulated Deficit | Adjustments and Other Adjustments              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
BALANCE $ (3,022) (320) (41) (36) (36) (36) (36)
Net income (loss)       (5) (284) (222) (2,986)
BALANCE   $ (258) $ (320) $ (41) $ (320) $ (258) $ (3,022)