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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Lossses) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Balance at beginning of period (in shares) at Dec. 31, 2021 |  | 48,954,482 |  |  |  |
Balance at beginning of period at Dec. 31, 2021 | $ 325,539 | $ 759 | $ 653,978 | $ 92,111 | $ 859 | $ (422,168)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 12,074 |  |  | 12,074 |  |
Foreign currency translation | 243 |  |  |  | 243 |
Stock-based compensation (in shares) |  | 277,124 |  |  |  |
Stock-based compensation | 2,277 | $ 5 | 2,272 |  |  |
Stock repurchase (in shares) |  | (247,174) |  |  |  |
Stock repurchase | (8,013) |  |  |  |  | (8,013)
Common stock dividends | (4,065) |  |  | (4,065) |  |
Unrealized gain (loss) on derivative instruments | 13,585 |  |  |  | 13,585 |
Stock option exercises (in shares) |  | 48,208 |  |  |  |
Stock option exercises | 613 |  | 613 |  |  |
Balance at end of period (in shares) at Mar. 31, 2022 |  | 49,032,640 |  |  |  |
Balance at end of period at Mar. 31, 2022 | 342,253 | $ 764 | 656,863 | 100,120 | 14,687 | (430,181)
Balance at beginning of period (in shares) at Dec. 31, 2021 |  | 48,954,482 |  |  |  |
Balance at beginning of period at Dec. 31, 2021 | 325,539 | $ 759 | 653,978 | 92,111 | 859 | (422,168)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 70,796 |  |  |  |  |
Foreign currency translation | (140) |  |  |  |  |
Unrealized gain (loss) on derivative instruments | (8,193) |  |  |  |  |
Balance at end of period (in shares) at Sep. 30, 2022 |  | 48,065,277 |  |  |  |
Balance at end of period at Sep. 30, 2022 | 360,102 | $ 765 | 662,581 | 150,943 | (7,474) | (446,713)
Balance at beginning of period (in shares) at Mar. 31, 2022 |  | 49,032,640 |  |  |  |
Balance at beginning of period at Mar. 31, 2022 | 342,253 | $ 764 | 656,863 | 100,120 | 14,687 | (430,181)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 22,552 |  |  | 22,552 |  |
Foreign currency translation | (303) |  |  |  | (303) |
Stock-based compensation (in shares) |  | 16,416 |  |  |  |
Stock-based compensation | 2,370 |  | 2,370 |  |  |
Stock repurchase (in shares) |  | (360,659) |  |  |  |
Stock repurchase | (5,312) |  |  |  |  | (5,312)
Common stock dividends | (3,901) |  |  | (3,901) |  |
Unrealized gain (loss) on derivative instruments | (19,610) |  |  |  | (19,610) |
Stock option exercises (in shares) |  | 12,690 |  |  |  |
Stock option exercises | 122 |  | 122 |  |  |
Balance at end of period (in shares) at Jun. 30, 2022 |  | 48,701,087 |  |  |  |
Balance at end of period at Jun. 30, 2022 | 338,171 | $ 764 | 659,355 | 118,771 | (5,226) | (435,493)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 36,170 |  |  | 36,170 |  |
Foreign currency translation | (80) |  |  |  | (80) |
Stock-based compensation (in shares) |  | 3,344 |  |  |  |
Stock-based compensation | 2,720 |  | 2,720 |  |  |
Stock repurchase (in shares) |  | (691,844) |  |  |  |
Stock repurchase | (11,220) |  |  |  |  | (11,220)
Common stock dividends | (3,998) |  |  | (3,998) |  |
Unrealized gain (loss) on derivative instruments | (2,168) |  |  |  | (2,168) |
Stock option exercises (in shares) |  | 52,690 |  |  |  |
Stock option exercises | 507 | $ 1 | 506 |  |  |
Balance at end of period (in shares) at Sep. 30, 2022 |  | 48,065,277 |  |  |  |
Balance at end of period at Sep. 30, 2022 | 360,102 | $ 765 | 662,581 | 150,943 | (7,474) | (446,713)
Balance at beginning of period (in shares) at Dec. 31, 2022 |  | 47,675,796 |  |  |  |
Balance at beginning of period at Dec. 31, 2022 | 397,613 | $ 766 | 665,941 | 188,241 | (882) | (456,453)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 51,213 |  |  | 51,213 |  |
Foreign currency translation | 564 |  |  |  | 564 |
Stock-based compensation (in shares) |  | 480,463 |  |  |  |
Stock-based compensation | 2,766 | $ 8 | 2,758 |  |  |
Stock repurchase (in shares) |  | (540,875) |  |  |  |
Stock repurchase | (23,566) |  |  |  |  | (23,566)
Common stock dividends | (4,055) |  |  | (4,055) |  |
Unrealized gain (loss) on derivative instruments | (236) |  |  |  | (236) |
Stock option exercises (in shares) |  | 10,683 |  |  |  |
Stock option exercises | 144 |  | 144 |  |  |
Balance at end of period (in shares) at Mar. 31, 2023 |  | 47,626,067 |  |  |  |
Balance at end of period at Mar. 31, 2023 | 424,443 | $ 774 | 668,843 | 235,399 | (554) | (480,019)
Balance at beginning of period (in shares) at Dec. 31, 2022 |  | 47,675,796 |  |  |  |
Balance at beginning of period at Dec. 31, 2022 | 397,613 | $ 766 | 665,941 | 188,241 | (882) | (456,453)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 180,870 |  |  |  |  |
Foreign currency translation | 729 |  |  |  |  |
Unrealized gain (loss) on derivative instruments | (1,776) |  |  |  |  |
Balance at end of period (in shares) at Sep. 30, 2023 |  | 46,297,254 |  |  |  |
Balance at end of period at Sep. 30, 2023 | 518,687 | $ 774 | 674,900 | 357,294 | (1,929) | (512,352)
Balance at beginning of period (in shares) at Mar. 31, 2023 |  | 47,626,067 |  |  |  |
Balance at beginning of period at Mar. 31, 2023 | 424,443 | $ 774 | 668,843 | 235,399 | (554) | (480,019)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 74,328 |  |  | 74,328 |  |
Foreign currency translation | 502 |  |  |  | 502 |
Stock-based compensation (in shares) |  | 24,550 |  |  |  |
Stock-based compensation | 2,915 |  | 2,915 |  |  |
Stock repurchase (in shares) |  | (585,997) |  |  |  |
Stock repurchase | (14,330) |  |  |  |  | (14,330)
Common stock dividends | (3,893) |  |  | (3,893) |  |
Unrealized gain (loss) on derivative instruments | (2,952) |  |  |  | (2,952) |
Stock option exercises (in shares) |  | 750 |  |  |  |
Stock option exercises | 11 |  | 11 |  |  |
Balance at end of period (in shares) at Jun. 30, 2023 |  | 47,065,370 |  |  |  |
Balance at end of period at Jun. 30, 2023 | 481,024 | $ 774 | 671,769 | 305,834 | (3,004) | (494,349)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 55,329 |  |  | 55,329 |  |
Foreign currency translation | (337) |  |  |  | (337) |
Stock-based compensation (in shares) |  | 10,829 |  |  |  |
Stock-based compensation | 3,131 |  | 3,131 |  |  |
Stock repurchase (in shares) |  | (778,945) |  |  |  |
Stock repurchase | (18,003) |  |  |  |  | (18,003)
Common stock dividends | (3,869) |  |  | (3,869) |  |
Unrealized gain (loss) on derivative instruments | 1,412 |  |  |  | 1,412 |
Stock option exercises (in shares) |  |  |  |  |  |
Stock option exercises | 0 |  |  |  |  |
Balance at end of period (in shares) at Sep. 30, 2023 |  | 46,297,254 |  |  |  |
Balance at end of period at Sep. 30, 2023 | $ 518,687 | $ 774 | $ 674,900 | $ 357,294 | $ (1,929) | $ (512,352)

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