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UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income | Retained Earnings | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance (in shares) |  | 72,997 |  |  |  |
Beginning of period at Dec. 31, 2021 | $ 188,406 | $ 730 | $ 488,036 | $ 621 | $ 442,596 | $ (743,577)
Beginning of period (in shares) at Dec. 31, 2021 |  |  |  |  |  | 51,492
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 19,181 |  |  |  | 19,181 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (1) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | 1 |  | 319 |  | (318) |
Stock-based compensation expense | 4,437 |  | 4,437 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (3)
Employee stock purchase plan | 242 |  | 193 |  |  | $ 49
Dividends | (6,094) |  |  |  | (6,094) |
Change in fair value of interest rate swaps | 2,302 |  |  | 2,302 |  |
Repurchases of common stock (in shares) |  |  |  |  |  | 147
Repurchases of common stock | (10,270) |  |  |  |  | $ (10,270)
Ending balance (in shares) at Mar. 31, 2022 |  | 72,996 |  |  |  |
End of period at Mar. 31, 2022 | $ 198,205 | $ 730 | 492,985 | 2,923 | 455,365 | $ (753,798)
End of period (in shares) at Mar. 31, 2022 |  |  |  |  |  | 51,636
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.30 |  |  |  |  |
Beginning of period at Dec. 31, 2021 | $ 188,406 | $ 730 | 488,036 | 621 | 442,596 | $ (743,577)
Beginning of period (in shares) at Dec. 31, 2021 |  |  |  |  |  | 51,492
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 68,359 |  |  |  |  |
Employee stock purchase plan | 831 |  |  |  |  |
Change in fair value of interest rate swaps | (615) |  |  |  |  |
Ending balance (in shares) at Sep. 30, 2022 |  | 73,006 |  |  |  |
End of period at Sep. 30, 2022 | 208,976 | $ 730 | 502,909 | 6 | 491,856 | $ (786,525)
End of period (in shares) at Sep. 30, 2022 |  |  |  |  |  | 52,172
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance (in shares) |  | 72,996 |  |  |  |
Beginning of period at Mar. 31, 2022 | 198,205 | $ 730 | 492,985 | 2,923 | 455,365 | $ (753,798)
Beginning of period (in shares) at Mar. 31, 2022 |  |  |  |  |  | 51,636
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 26,916 |  |  |  | 26,916 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (11) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | 0 |  | 298 |  | (298) |
Stock-based compensation expense | 4,410 |  | 4,410 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (4)
Employee stock purchase plan | 295 |  | 234 |  |  | $ 61
Dividends | (6,093) |  |  |  | (6,093) |
Change in fair value of interest rate swaps | (2,917) |  |  | (2,917) |  |
Repurchases of common stock (in shares) |  |  |  |  |  | 162
Repurchases of common stock | (10,283) |  |  |  |  | $ (10,283)
Ending balance (in shares) at Jun. 30, 2022 |  | 73,007 |  |  |  |
End of period at Jun. 30, 2022 | $ 210,533 | $ 730 | 497,927 | 6 | 475,890 | $ (764,020)
End of period (in shares) at Jun. 30, 2022 |  |  |  |  |  | 51,794
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.30 |  |  |  |  |
Beginning balance (in shares) |  | 73,007 |  |  |  |
Net income | $ 22,262 |  |  |  | 22,262 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (1) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | (1) |  | 318 |  | (319) |
Stock-based compensation expense | 4,445 |  | 4,445 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (5)
Employee stock purchase plan | 294 |  | 219 |  |  | $ 75
Dividends | (5,977) |  |  |  | (5,977) |
Change in fair value of interest rate swaps | 0 |  |  |  |  |
Repurchases of common stock (in shares) |  |  |  |  |  | 383
Repurchases of common stock | (22,580) |  |  |  |  | $ (22,580)
Ending balance (in shares) at Sep. 30, 2022 |  | 73,006 |  |  |  |
End of period at Sep. 30, 2022 | $ 208,976 | $ 730 | 502,909 | 6 | 491,856 | $ (786,525)
End of period (in shares) at Sep. 30, 2022 |  |  |  |  |  | 52,172
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.30 |  |  |  |  |
Beginning balance (in shares) |  | 73,006 |  |  |  |
Beginning balance (in shares) |  | 73,242 |  |  |  |
Beginning of period at Dec. 31, 2022 | $ 182,198 | $ 732 | 507,734 | 6 | 492,764 | $ (819,038)
Beginning of period (in shares) at Dec. 31, 2022 | 52,744 |  |  |  |  | 52,744
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | $ 16,210 |  |  |  | 16,210 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (5) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | (1) |  | 340 |  | (341) |
Stock-based compensation expense | 4,326 |  | 4,326 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (5)
Employee stock purchase plan | 245 |  | 172 |  |  | $ 73
Dividends | (7,003) |  |  |  | (7,003) |
Repurchases of common stock (in shares) |  |  |  |  |  | 181
Repurchases of common stock | (10,244) |  |  |  |  | $ (10,244)
Other | (6) |  |  | (6) |  |
Ending balance (in shares) at Mar. 31, 2023 |  | 73,247 |  |  |  |
End of period at Mar. 31, 2023 | $ 185,725 | $ 732 | 512,572 | 0 | 501,630 | $ (829,209)
End of period (in shares) at Mar. 31, 2023 |  |  |  |  |  | 52,920
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.36 |  |  |  |  |
Beginning of period at Dec. 31, 2022 | $ 182,198 | $ 732 | 507,734 | 6 | 492,764 | $ (819,038)
Beginning of period (in shares) at Dec. 31, 2022 | 52,744 |  |  |  |  | 52,744
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | $ 45,359 |  |  |  |  |
Employee stock purchase plan | 817 |  |  |  |  |
Change in fair value of interest rate swaps | 0 |  |  |  |  |
Ending balance (in shares) at Sep. 30, 2023 |  | 73,224 |  |  |  |
End of period at Sep. 30, 2023 | $ 178,952 | $ 732 | 523,669 | 0 | 516,540 | $ (861,989)
End of period (in shares) at Sep. 30, 2023 | 53,464 |  |  |  |  | 53,464
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance (in shares) |  | 73,247 |  |  |  |
Beginning of period at Mar. 31, 2023 | $ 185,725 | $ 732 | 512,572 | 0 | 501,630 | $ (829,209)
Beginning of period (in shares) at Mar. 31, 2023 |  |  |  |  |  | 52,920
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 18,574 |  |  |  | 18,574 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (32) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | 0 |  | 322 |  | (322) |
Stock-based compensation expense | 4,309 |  | 4,309 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (5)
Employee stock purchase plan | 296 |  | 219 |  |  | $ 77
Dividends | (6,945) |  |  |  | (6,945) |
Repurchases of common stock (in shares) |  |  |  |  |  | 248
Repurchases of common stock | (14,341) |  |  |  |  | $ (14,341)
Ending balance (in shares) at Jun. 30, 2023 |  | 73,279 |  |  |  |
End of period at Jun. 30, 2023 | $ 187,618 | $ 732 | 517,422 | 0 | 512,937 | $ (843,473)
End of period (in shares) at Jun. 30, 2023 |  |  |  |  |  | 53,163
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.36 |  |  |  |  |
Beginning balance (in shares) |  | 73,279 |  |  |  |
Net income | $ 10,575 |  |  |  | 10,575 |
Issuance for stock-based compensation and dividends, net of forfeitures (in shares) |  | (55) |  |  |  |
Issuance for stock-based compensation and dividends, net of forfeitures | 0 |  | 78 |  | (78) |
Stock-based compensation expense | 5,967 |  | 5,967 |  |  |
Employee stock purchase plan (in shares) |  |  |  |  |  | (4)
Employee stock purchase plan | 276 |  | 202 |  |  | $ 74
Dividends | (6,894) |  |  |  | (6,894) |
Change in fair value of interest rate swaps | 0 |  |  |  |  |
Repurchases of common stock (in shares) |  |  |  |  |  | 305
Repurchases of common stock | (18,590) |  |  |  |  | $ (18,590)
Ending balance (in shares) at Sep. 30, 2023 |  | 73,224 |  |  |  |
End of period at Sep. 30, 2023 | $ 178,952 | $ 732 | $ 523,669 | $ 0 | $ 516,540 | $ (861,989)
End of period (in shares) at Sep. 30, 2023 | 53,464 |  |  |  |  | 53,464
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.36 |  |  |  |  |
Beginning balance (in shares) |  | 73,224 |  |  |  |

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