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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands | Common Class A [Member] Retained Earnings [Member] | Common Class A [Member] AOCI Attributable to Parent [Member] | Common Class A [Member] Common Stock, Common Class A [Member] | Common Class A [Member] Common Stock, Common Class B [Member] | Common Class A [Member] Treasury Stock, Common [Member] | Common Class A [Member] Additional Paid-in Capital [Member] | Common Class A [Member] | Common Class B [Member] Retained Earnings [Member] | Common Class B [Member] AOCI Attributable to Parent [Member] | Common Class B [Member] Common Stock, Common Class A [Member] | Common Class B [Member] Common Stock, Common Class B [Member] | Common Class B [Member] Treasury Stock, Common [Member] | Common Class B [Member] Additional Paid-in Capital [Member] | Common Class B [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Common Stock, Common Class A [Member] | Common Stock, Common Class B [Member] | Treasury Stock, Common [Member] | Additional Paid-in Capital [Member] | Total
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Balance at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 237,188 | $ (16,546) | $ 214 | $ 1,067 | $ (349) | $ 40,772 | $ 262,346
Balance (in shares) at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,643 |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,572 | 0 | $ 0 | $ 0 | 0 | 0 | 14,572
Cash dividends declared on common stock | $ (128) | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ (128) | $ (747) | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ (747) |  |  |  |  |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (1) | 0 |  | 0
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (10) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (1) | 0 |  | 0
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 1,998 | 0 | 0 | 0 | 0 | 1,998
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (894) | 0 | 0 | 0 | 0 | (894)
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 1 | 0 | 0 | 0 | 0 | 1
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 902 | 902
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 13 | 0 | 0 | 0 | 0 | 13
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,572 | 0 | 0 | 0 | 0 | 0 | 14,572
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0) | (0) | $ (0) | $ 1 | (0) |  | (0)
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (10) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 0 | 0 | 902 | 902
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 13 | 0 | 0 | 0 | 0 | 13
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 1,998 | 0 | 0 | 0 | 0 | 1,998
Balance at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,885 | (15,428) | $ 214 | $ 1,066 | (349) | 41,675 | 278,063
Balance (in shares) at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,633 |  |  |
Balance at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 237,188 | (16,546) | $ 214 | $ 1,067 | (349) | 40,772 | 262,346
Balance (in shares) at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,643 |  |  |
Net earnings |  |  |  |  |  |  | 9,907 |  |  |  |  |  |  | 51,888 |  |  |  |  |  |  | 61,795
Cash dividends declared on common stock |  |  |  |  |  |  | (385) |  |  |  |  |  |  | (2,235) |  |  |  |  |  |  |
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,857)
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41
Net earnings |  |  |  |  |  |  | 9,907 |  |  |  |  |  |  | 51,888 |  |  |  |  |  |  | 61,795
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,857)
Balance at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 296,365 | (19,370) | $ 214 | $ 1,063 | (349) | 43,488 | 321,411
Balance (in shares) at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,638 |  |  |
Balance at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,885 | (15,428) | $ 214 | $ 1,066 | (349) | 41,675 | 278,063
Balance (in shares) at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,633 |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,775 | 0 | $ 0 | $ 0 | 0 | 0 | 27,775
Cash dividends declared on common stock | (128) | 0 | 0 | 0 | 0 | 0 | (128) | (742) | 0 | 0 | 0 | 0 | 0 | (742) |  |  |  |  |  |  |
Issuance of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 1 | 0 | (1) | 0
Issuance of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 10 |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (3) | 0 |  | 0
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (5) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (3) | 0 |  | 0
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (2,231) | 0 | 0 | 0 | 0 | (2,231)
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 789 | 0 | 0 | 0 | 0 | 789
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 950 | 950
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 14 | 0 | 0 | 0 | 0 | 14
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,775 | 0 | 0 | 0 | 0 | 0 | 27,775
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0) | (0) | $ (0) | $ 3 | (0) |  | (0)
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (5) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3) |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 0 | 0 | 950 | 950
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 14 | 0 | 0 | 0 | 0 | 14
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (2,231) | 0 | 0 | 0 | 0 | (2,231)
Balance at Jun. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 277,790 | (16,856) | $ 214 | $ 1,064 | (349) | 42,627 | 304,490
Balance (in shares) at Jun. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,638 |  |  |
Net earnings |  |  |  |  |  |  | 3,117 |  |  |  |  |  |  | 16,331 | 19,448 | 0 | $ 0 | $ 0 | 0 | 0 | 19,448
Cash dividends declared on common stock | (128) | 0 | 0 | 0 | 0 | 0 | (128) | (745) | 0 | 0 | 0 | 0 | 0 | (745) |  |  |  |  |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | (1) | 0 |  | 0
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | (1) | 0 |  | 0
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (2,624) | 0 | 0 | 0 | 0 | (2,624)
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 96 | 0 | 0 | 0 | 0 | 96
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 860 | 860
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 14 | 0 | 0 | 0 | 0 | 14
Net earnings |  |  |  |  |  |  | 3,117 |  |  |  |  |  |  | 16,331 | 19,448 | 0 | 0 | 0 | 0 | 0 | 19,448
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0) | (0) | (0) | 1 | (0) |  | (0)
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 860 | 860
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 14 | 0 | 0 | 0 | 0 | 14
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (2,624) | 0 | 0 | 0 | 0 | (2,624)
Balance at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 296,365 | (19,370) | $ 214 | $ 1,063 | (349) | 43,488 | 321,411
Balance (in shares) at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,638 |  |  |
Balance at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 307,510 | (12,037) | $ 214 | $ 1,065 | (454) | 44,260 | 340,558
Balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,620 |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,874 | 0 | $ 0 | $ 0 | 0 | 0 | 15,874
Cash dividends declared on common stock | (129) | 0 | 0 | 0 | 0 | 0 | (129) | (747) | 0 | 0 | 0 | 0 | 0 | (747) |  |  |  |  |  |  |
Issuance of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 6 | $ 0 | $ (6) | 0
Issuance of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 58 |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (6) |  |  | 0
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (6) |  |  | 0
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ (1) | $ (10) | $ (6,283) |  | (6,283)
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (11) | (98) |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11 |
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (3,776) | $ 0 | $ 0 | 0 | 0 | (3,776)
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 340 | 0 | 0 | 0 | 0 | 340
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 1 | 0 | 0 | 0 | 0 | 1
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 804 | 804
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 15 | 0 | 0 | 0 | 0 | 15
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,874 | 0 | 0 | 0 | $ 0 | $ 0 | 15,874
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0) | (0) | $ (0) | $ 6 |  |  | (0)
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 |
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11 | 98 |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11 |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 0 | $ 0 | 804 | 804
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 15 | 0 | 0 | 0 | 0 | 15
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (3,776) | 0 | 0 | 0 | 0 | (3,776)
Balance at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 322,508 | (15,457) | $ 213 | $ 1,061 | (6,737) | 45,069 | 346,657
Balance (in shares) at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,131 | 10,574 |  |  |
Balance at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 307,510 | (12,037) | $ 214 | $ 1,065 | (454) | 44,260 | 340,558
Balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,142 | 10,620 |  |  |
Net earnings |  |  |  |  |  |  | 6,872 |  |  |  |  |  |  | 35,888 |  |  |  |  |  |  | 42,760
Cash dividends declared on common stock |  |  |  |  |  |  | (381) |  |  |  |  |  |  | (2,190) |  |  |  |  |  |  |
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,317
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 46
Net earnings |  |  |  |  |  |  | 6,872 |  |  |  |  |  |  | 35,888 |  |  |  |  |  |  | 42,760
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 46
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,317
Balance at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 347,702 | (12,155) | $ 212 | $ 1,046 | (16,507) | 47,064 | 367,362
Balance (in shares) at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,115 | 10,432 |  |  |
Balance at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 322,508 | (15,457) | $ 213 | $ 1,061 | (6,737) | 45,069 | 346,657
Balance (in shares) at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,131 | 10,574 |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,806 | 0 | $ 0 | $ 0 | 0 | 0 | 18,806
Cash dividends declared on common stock | (127) | 0 | 0 | 0 | 0 | 0 | (127) | (725) | 0 | 0 | 0 | 0 | 0 | (725) |  |  |  |  |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (1) | 0 |  | (1)
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (4) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (1) | 0 |  | (1)
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ (1) | $ (12) | (7,892) |  | (7,893)
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10) | (117) |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 |
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (999) | $ 0 | $ 0 | 0 | 0 | (999)
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (291) | 0 | 0 | 0 | 0 | (291)
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 971 | 971
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 15 | 0 | 0 | 0 | 0 | 15
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,806 | 0 | 0 | 0 | 0 | 0 | 18,806
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0) | (0) | $ (0) | $ 1 | (0) |  | 1
Forfeiture of restricted common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (4) |  |  |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 | 117 |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 |
Forfeiture of restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2) |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 0 | 0 | 971 | 971
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 15 | 0 | 0 | 0 | 0 | 15
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (999) | 0 | 0 | 0 | 0 | (999)
Balance at Jun. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 340,462 | (16,732) | $ 212 | $ 1,048 | (14,629) | 46,054 | 356,415
Balance (in shares) at Jun. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,121 | 10,453 |  |  |
Net earnings |  |  |  |  |  |  | 1,297 |  |  |  |  |  |  | 6,783 | 8,080 | 0 | $ 0 | $ 0 | 0 | 0 | 8,080
Cash dividends declared on common stock | $ (125) | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | (125) | $ (715) | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | (715) |  |  |  |  |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ (2) | (1,878) |  | (1,877)
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 | 21 |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 6,092 | $ 0 | $ 0 | 0 | 0 | 6,092
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (1,531) | 0 | 0 | 0 | 0 | (1,531)
Unrealized holding gains on marketable securities, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 0 | 1,007 | 1,007
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 16 | 0 | 0 | 0 | 0 | 16
Net earnings |  |  |  |  |  |  | $ 1,297 |  |  |  |  |  |  | $ 6,783 | 8,080 | 0 | $ 0 | $ 0 | 0 | 0 | 8,080
Purchases of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6) | (21) |  |  |
Purchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | $ 0 | $ 0 | 0 | 1,007 | 1,007
Change in unfunded SERP liability, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 16 | 0 | 0 | 0 | 0 | 16
Foreign currency translation adjustment, net of taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 6,092 | 0 | 0 | 0 | 0 | 6,092
Balance at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 347,702 | $ (12,155) | $ 212 | $ 1,046 | $ (16,507) | $ 47,064 | $ 367,362
Balance (in shares) at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,115 | 10,432 |  |  |

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