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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
AOCI Attributable to Parent [Member]
Total
Beginning balance at Dec. 31, 2017   $ 21,382 $ 228,750 $ 180,543 $ (79,121) $ (840) $ 350,714
Net income       17,934     17,934
Other comprehensive income (loss)           (1,745) (1,745)
Common dividends declared       (14,198)     (14,198)
Equity-based compensation expense     151   594   745
Common stock options exercised     (38)   195   157
Issuance of common stock to 401(k) plan     86   143   229
Purchase of treasury shares         (14,715)   (14,715)
Ending balance at Jun. 30, 2018   21,382 228,949 184,279 (92,904) (2,585) 339,121
Beginning balance at Mar. 31, 2018   21,382 228,774 178,227 (83,865) (2,481) 342,037
Net income       9,066     9,066
Other comprehensive income (loss)           (104) (104)
Common dividends declared       (3,014)     (3,014)
Equity-based compensation expense     168   47   215
Common stock options exercised     (30)   164   134
Issuance of common stock to 401(k) plan     37   52   89
Purchase of treasury shares         (9,302)   (9,302)
Ending balance at Jun. 30, 2018   21,382 228,949 184,279 (92,904) (2,585) 339,121
Beginning balance at Dec. 31, 2018   16,007 122,486 195,793   (1,429) 332,857 [1]
Net income       20,082     20,082
Other comprehensive income (loss)           1,048 1,048
Common dividends declared       (7,257)     (7,257)
Equity-based compensation expense   42 964       1,006
Common stock options exercised   4 78       82
Issuance of common stock to 401(k) plan   7 220       227
Repurchase of common shares (427) (13,932) (14,359)
Ending balance at Jun. 30, 2019   15,633 109,816 208,618   (381) 333,686
Beginning balance at Mar. 31, 2019   15,818 115,914 202,103   (733) 333,102
Net income       10,451     10,451
Other comprehensive income (loss)           352 352
Common dividends declared       (3,936)     (3,936)
Equity-based compensation expense   4 145       149
Common stock options exercised   2 56       58
Issuance of common stock to 401(k) plan   3 84       87
Repurchase of common shares (194) (6,383) (6,577)
Ending balance at Jun. 30, 2019   $ 15,633 $ 109,816 $ 208,618   $ (381) $ 333,686
[1] Derived from audited financial statements