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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (unaudited) - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Retained Earnings
AOCI (Loss), Net
Cumulative Effect, Period of Adoption, Adjustment
Total
Balance at Dec. 31, 2021 $ 109 $ 382,999   $ 181,385 $ (7,504)   $ 556,989
Balance (in shares) at Dec. 31, 2021 10,920,569            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock compensation plans (in shares) 23,487            
Employee and non-employee stock-based compensation   5,598         5,598
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting   (1,191)         (1,191)
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting (in shares) (12,359)            
Net Income       67,165     67,165
Other comprehensive income (loss)         (46,324)   (46,324)
Balance at Sep. 30, 2022 $ 109 387,406   248,550 (53,828)   582,237
Balance (in shares) at Sep. 30, 2022 10,931,697            
Balance at Jun. 30, 2022 $ 109 385,369   223,595 (34,767)   574,306
Balance (in shares) at Jun. 30, 2022 10,931,697            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Employee and non-employee stock-based compensation   2,037         2,037
Net Income       24,955     24,955
Other comprehensive income (loss)         (19,061)   (19,061)
Balance at Sep. 30, 2022 $ 109 387,406   248,550 (53,828)   582,237
Balance (in shares) at Sep. 30, 2022 10,931,697            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Cumulative effect of changes in accounting principle             240,810
Balance at Dec. 31, 2022 $ 109 389,276   240,810 (54,298)   575,897
Balance (in shares) at Dec. 31, 2022 10,949,965            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock compensation plans $ 3           3
Issuance of common stock under stock compensation plans (in shares) 285,190            
Employee and non-employee stock-based compensation   7,438         7,438
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting $ (2) (3,170)         (3,172)
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting (in shares) (172,426)            
Net Income       62,700     62,700
Other comprehensive income (loss)         (5,853)   (5,853)
Balance at Sep. 30, 2023 $ 110 393,544 $ (2,103) 301,407 (60,151) $ (2,103) 634,910
Balance (in shares) at Sep. 30, 2023 11,062,729            
Balance at Jun. 30, 2023 $ 110 392,742   279,344 (50,921)   621,275
Balance (in shares) at Jun. 30, 2023 10,991,074            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock under stock compensation plans $ 2           2
Issuance of common stock under stock compensation plans (in shares) 220,200            
Employee and non-employee stock-based compensation   2,636         2,636
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting $ (2) (1,834)         (1,836)
Redemption of common stock for exercise of stock options and tax withholdings for restricted stock vesting (in shares) (148,545)            
Net Income       22,063     22,063
Other comprehensive income (loss)         (9,230)   (9,230)
Balance at Sep. 30, 2023 $ 110 $ 393,544 $ (2,103) $ 301,407 $ (60,151) $ (2,103) 634,910
Balance (in shares) at Sep. 30, 2023 11,062,729            
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Cumulative effect of changes in accounting principle             $ 301,407