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EARNINGS (LOSS) PER COMMON SHARE - Computations for Basic and Diluted Earnings/(Loss) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Schedule of Earnings Per Share [Line Items]          
Less: Income allocated to participating securities $ 0 $ (62) $ 0 $ (122) $ 0
Less: participating securities dividends 0 0 (94) 0 (188)
Less: preferred stock dividends (1,727) (3,141) (3,442) (4,868) (6,975)
Impact of preferred stock redemption 0 $ 3,347 (49) 3,347 (575)
Voting          
Schedule of Earnings Per Share [Line Items]          
Net loss 18,870   (18,273) 33,109 (24,804)
Less: Income allocated to participating securities 0     (121)  
Less: participating securities dividends     (93)   (186)
Less: preferred stock dividends (1,711)   (3,409) (4,822) (6,909)
Less: preferred stock redemption 0        
Impact of preferred stock redemption     (49) (3,315) (570)
Net income allocated to common stockholders $ 17,159   $ (21,726) $ 24,851 $ (31,329)
Weighted average common shares outstanding (in shares) 50,172,865   49,553,598 50,024,048 49,770,527
Average shares and dilutive common shares (in shares) 50,414,881   49,553,598 50,332,964 49,770,527
Basic loss per common share          
Basic earnings (loss) per common share (in usd per share) $ 0.34 $ 0.16 $ (0.44) $ 0.50 $ (0.63)
Diluted loss per common share          
Diluted earnings (loss) per common share (in usd per share) $ 0.34 0.15 $ (0.44) $ 0.49 $ (0.63)
Voting | Restricted shares / units          
Schedule of Earnings Per Share [Line Items]          
Dilutive effects of stock units and stock options (in shares) 238,008   0 302,848 0
Voting | Stock Option          
Schedule of Earnings Per Share [Line Items]          
Dilutive effects of stock units and stock options (in shares) 4,008   0 6,068 0
Class B Common Stock          
Schedule of Earnings Per Share [Line Items]          
Net loss $ 180   $ (176) $ 316 $ (238)
Less: Income allocated to participating securities 0     (1)  
Less: participating securities dividends     (1)   (2)
Less: preferred stock dividends (16)   (33) (46) (66)
Less: preferred stock redemption 0        
Impact of preferred stock redemption     0 (32) (5)
Net income allocated to common stockholders $ 164   $ (210) $ 237 $ (301)
Weighted average common shares outstanding (in shares) 477,321   477,321 477,321 477,321
Average shares and dilutive common shares (in shares) 477,321   477,321 477,321 477,321
Basic loss per common share          
Basic earnings (loss) per common share (in usd per share) $ 0.34 0.16 $ (0.44) $ 0.50 $ (0.63)
Diluted loss per common share          
Diluted earnings (loss) per common share (in usd per share) $ 0.34 $ 0.15 $ (0.44) $ 0.50 $ (0.63)
Class B Common Stock | Restricted shares / units          
Schedule of Earnings Per Share [Line Items]          
Dilutive effects of stock units and stock options (in shares) 0   0 0 0
Class B Common Stock | Stock Option          
Schedule of Earnings Per Share [Line Items]          
Dilutive effects of stock units and stock options (in shares) 0   0 0 0