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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table |
(1) | The table below reflects compensation amounts for two Chief Executive Officers for fiscal 2022 and 2021. Prior to March 7, 2022, William G. Miller, II, the “First Co-CEO”, and Jeffrey I. Badgley, the “Second Co-CEO”, served together as co-Chief Executive Officers of the Company. Effective March 7, 2022, Mr. Miller, II was appointed as the Company’s sole Chief Executive Officer and Mr. Badgley was appointed as the Company’s President of International and Military.
Company Selected Measure Name | Adjusted Pretax Income |  |  |
Named Executive Officers, Footnote |
(1) | The table below reflects compensation amounts for two Chief Executive Officers for fiscal 2022 and 2021. Prior to March 7, 2022, William G. Miller, II, the “First Co-CEO”, and Jeffrey I. Badgley, the “Second Co-CEO”, served together as co-Chief Executive Officers of the Company. Effective March 7, 2022, Mr. Miller, II was appointed as the Company’s sole Chief Executive Officer and Mr. Badgley was appointed as the Company’s President of International and Military.
(3) | The names of the Non-CEO NEOs included for purposes of calculating the average amounts in each applicable year are as follows: (i) for 2023, Deborah L. Whitmire, William G. Miller, Jeffrey I. Badgley, Josias W. Reyneke, and Vincent Tiano, (ii) for 2022, William G. Miller, Deborah L. Whitmire, Vincent Tiano, Josias W. Reyneke and Jamison Linden (iii) for 2021, Deborah L. Whitmire, Josias W. Reyneke, Vincent Tiano and Jamison Linden; and (iv) for 2020, William G. Miller, Deborah L. Whitmire, Frank Madonia and Josias W. Reyneke.
Peer Group Issuers, Footnote |
(4) | Represents the weighted total shareholder return (“TSR”) of the peer group described below (the “Peer Group”), weighted according to the respective companies’ stock market capitalization at the beginning of each calendar year. The Peer Group used for this purpose is a peer group recommended by the Compensation Committee’s independent compensation consultant, Pearl Meyer, which group was used and referred to by the Compensation Committee in connection with its review of the Company’s executive compensation program. The Peer Group for 2020, 2021 and 2022 consisted of: Astec Industries, Inc. (ASTE); Blue Bird Corp. (BLBD); CIRCOR International, Inc. (CIR); Commercial Vehicle Group, Inc. (CVGI); Douglas Dynamics, Inc. (PLOW); Enerpac Tool Group Corp. (EPAC); L.B. Foster Co. (FSTR); Motorcar Parts of America, Inc. (MPAA); NN, Inc. (NNBR); Park-Ohio Holdings Corp. (PKOH); Shyft Group Inc. (SHYF); and Stoneridge, Inc. (SRI). In October 2023, peer, CIRCOR International, Inc., was acquired by a global investment firm. As a result, its shares ceased to trade on the NYSE. Correspondingly, the Company removed CIRCOR International, Inc., from its Peer Group TSR data for 2023.
Adjustment To PEO Compensation, Footnote | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
​ | ​ | William G. | ​ | William G. | ​ | Jeffrey I. | ​ | William G. | ​ | Jeffrey I. | ​ | William G. | ​ | Jeffrey I.
CEO | ​ | Miller II | ​ | Miller II | ​ | Badgley | ​ | Miller II | ​ | Badgley | ​ | Miller II | ​ | Badgley
SCT total compensation | $ | 3,057,145 | $ | 2,769,503 | $ | 1,723,992 | $ | 689,213 | $ | 689,213 | $ | 760,171 | $ | 760,171
Adjustments for stock awards | ​ | ​ | ​ | . | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Deduct grant date fair value of equity awards granted in applicable fiscal year (as reported in Summary Compensation Table) | ​ | — | ​ | (1,797,000) | ​ | (898,500) | ​ | — | ​ | — | ​ | — | ​ | —
Add fair value of equity awards granted in applicable fiscal year as of year end | ​ | — | ​ | 1,599,600 | ​ | 799,800 | ​ | — | ​ | — | ​ | — | ​ | —
Add change in fair value of unvested equity awards from end of prior fiscal year to end of applicable year | ​ | 750,240 | ​ | — | ​ | — | ​ | — | ​ | — | ​ | — | ​ | —
Add change in fair value of vested equity awards from end of prior fiscal year to vesting date | ​ | 18,480 | ​ | — | ​ | — | ​ | — | ​ | — | ​ | — | ​ | —
Compensation actually paid (as calculated above pursuant to SEC rules) | $ | 3,825,865 | $ | 2,572,103 | $ | 1,625,292 | $ | 689,213 | $ | 689,213 | $ | 760,171 | $ | 760,171
Non-PEO NEO Average Total Compensation Amount | $ 1,098,072 | $ 844,815 | $ 413,604 | $ 369,628
Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,354,312 | 795,465 | 413,604 | 369,628
Adjustment to Non-PEO NEO Compensation Footnote | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Average NEOs | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
SCT total compensation | $ | 1,098,072 | $ | 844,815 | $ | 413,604 | $ | 369,628
Adjustments for stock awards | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Deduct grant date fair value of equity awards granted in applicable fiscal year (as reported in Summary Compensation Table) | ​ | — | ​ | (449,250) | ​ | — | ​ | —
Add fair value of equity awards granted in applicable fiscal year as of year end | ​ | — | ​ | 399,900 | ​ | — | ​ | —
Add change in fair value of unvested equity awards from end of prior fiscal year to end of applicable year | ​ | 250,080 | ​ | — | ​ | — | ​ | —
Add change in fair value of vested equity awards from end of prior fiscal year to vesting date | ​ | 6,160 | ​ | — | ​ | — | ​ | —
Compensation actually paid (as calculated above pursuant to SEC rules) | $ | 1,354,312 | $ | 795,465 | $ | 413,604 | $ | 369,628
​ |  |  |
Compensation Actually Paid vs. Total Shareholder Return |  |  |  |
Compensation Actually Paid vs. Net Income |  |  |  |
Compensation Actually Paid vs. Company Selected Measure |  |  |  |
Total Shareholder Return Vs Peer Group |  |  |  |
Tabular List, Table | The following table lists the five financial performance measures that we believe represent the most important financial performance measures we used to link compensation paid to our NEOs to our performance. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands, except total shareholder return and earnings per share, diluted) | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
Revenue | $ | 1,153,354 | $ | 848,456 | $ | 717,476 | $ | 651,286
EBITDA (a Non-GAAP Measure) (1) | $ | 93,001 | $ | 40,873 | $ | 34,157 | $ | 48,910
Adjusted Pretax Income (a Non-GAAP Measure) (2) | $ | 86,929 | $ | 29,585 | $ | 22,265 | $ | 38,097
Total Shareholder Return | $ | 124 | $ | 77 | $ | 94 | $ | 104
Earnings Per Share, Diluted | $ | 5.07 | $ | 1.78 | $ | 1.42 | $ | 2.62
(1) | EBITDA is a non-GAAP financial measure and is defined as earnings before interest, taxes, depreciation and amortization.
(2) | See “Compensation Discussion and Analysis – 2023 Executive Annual Bonus Program” for a definition of this non-GAAP financial measure.
Total Shareholder Return Amount | $ 124 | 77 | 94 | 104
Peer Group Total Shareholder Return Amount | 83 | 70 | 93 | 97
Net Income (Loss) | $ 58,291,000 | $ 20,346,000 | $ 16,255,000 | $ 29,830,000
Company Selected Measure Amount | 86,929,000 | 29,585,000 | 22,265,000 | 38,097,000
PEO Name | William G. Miller, II |  |  |
Measure:: 1 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Revenue |  |  |
Measure:: 2 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | EBITDA (a Non-GAAP Measure) (1) |  |  |
Measure:: 3 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted Pretax Income (a Non-GAAP Measure) (2) |  |  |
Non-GAAP Measure Description |
(5) | Adjusted Pretax Income is a non-GAAP measure. See “Compensation Discussion and Analysis—2023 Executive Annual Bonus Program” for more information regarding this non-GAAP financial measure.
Measure:: 4 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Total Shareholder Return |  |  |
Measure:: 5 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Earnings Per Share, Diluted |  |  |
William G. Miller II |  |  |  |
Pay vs Performance Disclosure |  |  |  |
PEO Total Compensation Amount | $ 3,057,145 | $ 2,769,503 | $ 689,213 | $ 760,171
PEO Actually Paid Compensation Amount | 3,825,865 | 2,572,103 | 689,213 | 760,171
Jeffrey I. Badgley |  |  |  |
Pay vs Performance Disclosure |  |  |  |
PEO Total Compensation Amount |  | 1,723,992 | 689,213 | 760,171
PEO Actually Paid Compensation Amount |  | 1,625,292 | $ 689,213 | $ 760,171
PEO | William G. Miller II | Deduct grant date fair value of equity awards granted in applicable fiscal year (as reported in Summary Compensation Table) |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | (1,797,000) |  |
PEO | William G. Miller II | Add fair value of equity awards granted in applicable fiscal year as of year end |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | 1,599,600 |  |
PEO | William G. Miller II | Add change in fair value of unvested equity awards from end of prior fiscal year to end of applicable year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 750,240 |  |  |
PEO | William G. Miller II | Add change in fair value of vested equity awards from end of prior fiscal year to vesting date |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 18,480 |  |  |
PEO | Jeffrey I. Badgley | Deduct grant date fair value of equity awards granted in applicable fiscal year (as reported in Summary Compensation Table) |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | (898,500) |  |
PEO | Jeffrey I. Badgley | Add fair value of equity awards granted in applicable fiscal year as of year end |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | 799,800 |  |
Non-PEO NEO | Deduct grant date fair value of equity awards granted in applicable fiscal year (as reported in Summary Compensation Table) |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | (449,250) |  |
Non-PEO NEO | Add fair value of equity awards granted in applicable fiscal year as of year end |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  | $ 399,900 |  |
Non-PEO NEO | Add change in fair value of unvested equity awards from end of prior fiscal year to end of applicable year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 250,080 |  |  |
Non-PEO NEO | Add change in fair value of vested equity awards from end of prior fiscal year to vesting date |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 6,160 |  |  |

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