UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total |
Beginning balance, value at Dec. 31, 2020 | $ 13 | $ 4,430,924 | $ (4,190,425) | $ 240,512 |
Shares, Outstanding, Beginning Balance at Dec. 31, 2020 | 12,792,586 | | | |
Stock-based compensation | | 177 | | 177 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 3,021 | | | |
Net income | | | 3,389 | 3,389 |
Ending balance, value at Mar. 31, 2021 | $ 13 | 4,431,101 | (4,187,036) | 244,078 |
Shares, Outstanding, Ending Balance at Mar. 31, 2021 | 12,795,607 | | | |
Beginning balance, value at Dec. 31, 2020 | $ 13 | 4,430,924 | (4,190,425) | 240,512 |
Shares, Outstanding, Beginning Balance at Dec. 31, 2020 | 12,792,586 | | | |
Stock-based compensation | | | | 556 |
Net settlement for employee taxes on restricted stock and options | | | | |
Ending balance, value at Sep. 30, 2021 | $ 13 | 4,431,480 | (4,170,823) | 260,670 |
Shares, Outstanding, Ending Balance at Sep. 30, 2021 | 12,801,313 | | | |
Beginning balance, value at Mar. 31, 2021 | $ 13 | 4,431,101 | (4,187,036) | 244,078 |
Shares, Outstanding, Beginning Balance at Mar. 31, 2021 | 12,795,607 | | | |
Stock-based compensation | | 187 | | 187 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 2,940 | | | |
Net income | | | 13,970 | 13,970 |
Ending balance, value at Jun. 30, 2021 | $ 13 | 4,431,288 | (4,173,066) | 258,235 |
Shares, Outstanding, Ending Balance at Jun. 30, 2021 | 12,798,547 | | | |
Stock-based compensation | | 192 | | 192 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 2,766 | | | |
Net income | | | 2,243 | 2,243 |
Ending balance, value at Sep. 30, 2021 | $ 13 | 4,431,480 | (4,170,823) | 260,670 |
Shares, Outstanding, Ending Balance at Sep. 30, 2021 | 12,801,313 | | | |
Beginning balance, value at Dec. 31, 2021 | $ 13 | 4,431,719 | (4,164,496) | 267,236 |
Shares, Outstanding, Beginning Balance at Dec. 31, 2021 | 12,836,133 | | | |
Stock-based compensation | | 85 | | 85 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 5,495 | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited | (6,815) | | | |
Net income | | | 3,478 | 3,478 |
Ending balance, value at Mar. 31, 2022 | $ 13 | 4,431,804 | (4,161,018) | 270,799 |
Shares, Outstanding, Ending Balance at Mar. 31, 2022 | 12,834,813 | | | |
Beginning balance, value at Dec. 31, 2021 | $ 13 | 4,431,719 | (4,164,496) | 267,236 |
Shares, Outstanding, Beginning Balance at Dec. 31, 2021 | 12,836,133 | | | |
Stock-based compensation | | | | 310 |
Net settlement for employee taxes on restricted stock and options | | | | (160) |
Ending balance, value at Sep. 30, 2022 | $ 13 | 4,431,270 | (4,153,837) | 277,446 |
Shares, Outstanding, Ending Balance at Sep. 30, 2022 | 12,835,304 | | | |
Beginning balance, value at Mar. 31, 2022 | $ 13 | 4,431,804 | (4,161,018) | 270,799 |
Shares, Outstanding, Beginning Balance at Mar. 31, 2022 | 12,834,813 | | | |
Stock-based compensation | | 166 | | 166 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 4,305 | | | |
Net income | | | 565 | 565 |
Ending balance, value at Jun. 30, 2022 | $ 13 | 4,431,970 | (4,160,453) | 271,530 |
Shares, Outstanding, Ending Balance at Jun. 30, 2022 | 12,839,118 | | | |
Stock-based compensation | | 59 | | 59 |
Issuance of common stock upon vesting of restricted stock | | | | |
Stock Issued During Period, Shares, New Issues | 7,575 | | | |
Net income | | | 6,616 | 6,616 |
Net settlement for employee taxes on restricted stock and options | | (160) | | (160) |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period | 23,074 | | | |
Repurchases of common stock in open market | | (599) | | (599) |
Stock Repurchased During Period, Shares | (34,463) | | | |
Ending balance, value at Sep. 30, 2022 | $ 13 | $ 4,431,270 | $ (4,153,837) | $ 277,446 |
Shares, Outstanding, Ending Balance at Sep. 30, 2022 | 12,835,304 | | | |