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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balances at Dec. 31, 2018 $ 256,803 $ (56) $ 396 $ 231,174 $ (63,099) $ 88,332 $ (56)
Beginning balances, shares at Dec. 31, 2018     39,748,562        
Accounting standards update Topic 842 [Member]            
Stock-based compensation $ 4,670     4,670      
Cash dividends declared on common stock ($1.10 per share) (39,427)         (39,427)  
Issuances of non-vested restricted common stock, net of restricted stock forfeitures 2   $ 2        
Issuances of non-vested restricted common stock, net of restricted stock forfeitures, shares     173,276        
Repurchases of 58,756, 76,407 and 61,476 shares of restricted common stock in 31 December 2018, 2019 and 2020 respectively (1,684)            
Net income (loss) 87,211         87,211  
Ending Balance at Dec. 31, 2019 307,519   $ 398 235,844 (64,783) 136,060  
Balance, Shares at Dec. 31, 2019     39,921,838        
Stock-based compensation 4,362     4,362      
Cash dividends declared on common stock ($1.10 per share) (39,579)         (39,579)  
Issuances of non-vested restricted common stock, net of restricted stock forfeitures 3   $ 3        
Issuances of non-vested restricted common stock, net of restricted stock forfeitures, shares     320,873        
Repurchases of 58,756, 76,407 and 61,476 shares of restricted common stock in 31 December 2018, 2019 and 2020 respectively (1,405)       (1,405)    
Net income (loss) (32,667)         (32,667)  
Ending Balance at Dec. 31, 2020 $ 238,233   $ 401 240,206 (66,188) 63,814  
Balance, Shares at Dec. 31, 2020 40,242,711   40,242,711        
Stock-based compensation $ 4,432     4,432      
Cash dividends declared on common stock ($1.10 per share) (39,719)         (39,719)  
Issuances of non-vested restricted common stock, net of restricted stock forfeitures 2   $ 2        
Issuances of non-vested restricted common stock, net of restricted stock forfeitures, shares     110,588        
Repurchases of 58,756, 76,407 and 61,476 shares of restricted common stock in 31 December 2018, 2019 and 2020 respectively (2,106)       (2,106)    
Net income (loss) 102,540         102,540  
Ending Balance at Dec. 31, 2021 $ 303,382   $ 403 $ 244,638 $ (68,294) $ 126,635  
Balance, Shares at Dec. 31, 2021 40,353,299   40,353,299