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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Director | Former Director | Common stock | Common stock Director | Common stock Former Director | Additional Paid-in Capital | Additional Paid-in Capital Director | Additional Paid-in Capital Former Director | Retained Earnings | Treasury Stock, Common
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance, shares outstanding at Dec. 31, 2022 |  |  |  | 14,732,000 |  |  |  |  |  |  |
Stockholders' equity, beginning balance at Dec. 31, 2022 | $ 137,134 |  |  | $ 264 |  |  | $ 238,780 |  |  | $ 176,843 | $ (278,753)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income | $ 8,844 |  |  |  |  |  |  |  |  | 8,844 |
Issuance of common stock from employee stock purchase plan, shares | 21,656 |  |  | 22,000 |  |  |  |  |  |  |
Issuance of common stock from employee stock purchase plan | $ 526 |  |  | $ 0 |  |  | 526 |  |  |  |
Isuuance of common stock, shares |  |  |  |  | 4,000 | 30,000 |  |  |  |  |
Issuance of common stock |  | $ 112 | $ 826 |  |  |  |  | $ 112 | $ 826 |  |
Issuance of restricted common stock, shares |  |  |  | 142,000 |  |  |  |  |  |  |
Issuance of restricted common stock | $ 0 |  |  | $ 2 |  |  | (2) |  |  |  |
Exercise of stock options, shares | 12,000 |  |  | 1,000 |  |  |  |  |  |  |
Exercise of stock options | $ (21) |  |  |  |  |  | (21) |  |  |  |
Cancellation and retirement of restricted common stock, shares |  |  |  | (4,000) |  |  |  |  |  |  |
Cancellation and surrender of restricted common stock | (77) |  |  |  |  |  | (77) |  |  |  |
Stock-based compensation expense | 1,203 |  |  |  |  |  | 1,203 |  |  |  |
Dividends on common stock | (1,661) |  |  |  |  |  | (1,661) |  |  |  |
Other, shares |  |  |  | 8,000 |  |  |  |  |  |  |
Other | 276 |  |  |  |  |  | 276 |  |  |  |
Ending balance, shares outstanding at Mar. 31, 2023 |  |  |  | 14,935,000 |  |  |  |  |  |  |
Stockholders' equity, ending balance at Mar. 31, 2023 | 147,162 |  |  | $ 266 |  |  | 239,962 |  |  | 185,687 | (278,753)
Beginning balance, shares outstanding at Dec. 31, 2023 |  |  |  | 15,000,000 |  |  |  |  |  |  |
Stockholders' equity, beginning balance at Dec. 31, 2023 | 173,060 |  |  | $ 266 |  |  | 241,291 |  |  | 210,256 | (278,753)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income | $ 6,973 |  |  |  |  |  |  |  |  | 6,973 |
Issuance of common stock from employee stock purchase plan, shares | 16,296 |  |  | 16,000 |  |  |  |  |  |  |
Issuance of common stock from employee stock purchase plan | $ 347 |  |  |  |  |  | 347 |  |  |  |
Isuuance of common stock, shares |  |  |  |  | 4,000 |  |  |  |  |  |
Issuance of common stock |  | $ 113 |  |  |  |  |  | $ 113 |  |  |
Issuance of restricted common stock, shares |  |  |  | 157,000 |  |  |  |  |  |  |
Issuance of restricted common stock |  |  |  | $ 2 |  |  | (2) |  |  |  |
Exercise of stock options, shares | 0 |  |  |  |  |  |  |  |  |  |
Cancellation and retirement of restricted common stock, shares |  |  |  | (43,000) |  |  |  |  |  |  |
Cancellation and surrender of restricted common stock | $ (418) |  |  |  |  |  | (418) |  |  |  |
Stock-based compensation expense | 376 |  |  |  |  |  | 376 |  |  |  |
Dividends on common stock | (1,686) |  |  |  |  |  | (1,686) |  |  |  |
Other, shares |  |  |  | 31,000 |  |  |  |  |  |  |
Other | 790 |  |  |  |  |  | 790 |  |  |  |
Ending balance, shares outstanding at Mar. 31, 2024 |  |  |  | 15,165,000 |  |  |  |  |  |  |
Stockholders' equity, ending balance at Mar. 31, 2024 | $ 179,555 |  |  | $ 268 |  |  | $ 240,811 |  |  | $ 217,229 | $ (278,753)

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