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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure [Table] |  |  |
Pay vs Performance [Table Text Block] | PAY VERSUS PERFORMANCE As required by the regulations of the Securities and Exchange Commission implementing Section 14(i) of the Exchange Act, disclosure relating to the relationship of our executive pay versus performance is set forth below.
Year |  | Summary Compensation Table Total for PEO 1 |  |  | Compensation Actually Paid to PEO 2 |  |  | Average Summary Compensation Table Total for Non-PEO NEOs 3 |  |  | Average Compensation Actually Paid to Non-PEO NEOs 4 |  |  | Value of Initial Fixed $100 Investment Based On: |  |  | Net Income (thousands) 7 |  |  | EPS (diluted) 8 |
| Total Shareholder Return 5 |  |  | Peer Group Total Share- holder Return 6 |
(a) |  | (b) |  |  | (c) |  |  | (d) |  |  | (e) |  |  | (f) |  |  | (g) |  |  | (h) |  |  | (i) |
2022 |  | $ | 657,101 |  |  | $ | (10,016,269 | ) |  | $ | 803,540 |  |  | $ | (189,505 | ) |  | $ | 115 |  |  | $ | 123 |  |  | $ | 25,446 |  |  | $ | 0.57 |
2021 |  | $ | 464,212 |  |  | $ | 7,549,094 |  |  | $ | 918,714 |  |  | $ | 1,254,491 |  |  | $ | 272 |  |  | $ | 142 |  |  | $ | 56,625 |  |  | $ | 1.26 |
2020 |  | $ | 143,495 |  |  | $ | 18,060,019 |  |  | $ | 578,776 |  |  | $ | 1,183,531 |  |  | $ | 197 |  |  | $ | 114 |  |  | $ | 17,910 |  |  | $ | 0.41 |
1 | The dollar amounts reported in column (b) are the amounts of total compensation reported for Dr. Vinciarelli (our Chief Executive Officer) for each corresponding year in the “Total” column of the Summary Compensation Table. Refer to “Summary Compensation Table for Fiscal 2022.”
2 | The dollar amounts reported in column (c) represent the amount of “compensation actually paid” to Dr. Vinciarelli, as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned by or paid to Dr. Vinciarelli during the applicable year. In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to Dr. Vinciarelli’s total compensation for each year to determine the compensation actually paid:
Year |  | Reported Summary Compensation Table Total for PEO |  |  | Reported Value of Equity Awards(a) |  |  | Equity Award Adjustments(b) |  |  | Reported Change in the Actuarial Present Value of Pension Benefits |  |  | Pension Benefit Adjustments |  |  | Compensation Actually Paid to PEO |
2022 |  | $ | 657,101 |  |  | $ | (172,142 | ) |  | $ | (10,501,218 | ) |  |  | NA |  |  |  | NA |  |  | $ | (10,016,269 | )
2021 |  | $ | 464,212 |  |  |  | — |  |  | $ | 7,084,882 |  |  |  | NA |  |  |  | NA |  |  | $ | 7,549,094 |
2020 |  | $ | 143,495 |  |  |  | — |  |  | $ | 17,916,524 |  |  |  | NA |  |  |  | NA |  |  | $ | 18,060,019 |
(a) | The grant date fair value of equity awards represents the total of the amounts reported in the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table for the applicable year.
(b) | The equity award adjustments for each applicable year include the addition (or subtraction, as applicable) of the following: (i) the year-end fair value of any equity awards granted in the applicable year that are outstanding and unvested as of the end of the year; (ii) the amount of change as of the end of the applicable year (from the end of the prior fiscal year) in fair value of any awards granted in prior years that are outstanding and unvested as of the end of the applicable year; (iii) for awards that are granted and vest in same applicable year, the fair value as of the vesting date; (iv) for awards granted in prior years that vest in the applicable year, the amount equal to the change as of the vesting date (from the end of the prior fiscal year) in fair value; (v) for awards granted in prior years that are determined to fail to meet the applicable vesting conditions during the applicable year, a deduction for the amount equal to the fair value at the end of the prior fiscal year; and (vi) the dollar value of any dividends or other earnings paid on stock or option awards in the applicable year prior to the vesting date that are not otherwise reflected in the fair value of such award or included in any other component of total compensation for the applicable year. The valuation
| assumptions used to calculate fair values did not materially differ from those disclosed at the time of grant. The amounts deducted or added in calculating the equity award adjustments are as follows:
Year |  | Year End Fair Value of Equity Awards Granted During Applicable Year |  |  | Change in Fair Value as of Year-End of any Prior- Year Awards that remain Outstanding and Unvested as of Year-End |  |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  |  | Change in Fair Value as of the Vesting Date of any Prior- Year Awards that Vested During the Year |  |  | Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year |  |  | Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  |  | Total Equity Award Adjustments |
2022 |  | $ | 143,261 |  |  |  | — |  |  |  | — |  |  | $ | (10,644,480 | ) |  |  | — |  |  |  | — |  |  | $ | (10,501,218 | )
2021 |  |  | — |  |  | $ | 5,432,919 |  |  |  | — |  |  | $ | 1,651,962 |  |  |  | — |  |  |  | — |  |  | $ | 7,084,882 |
2020 |  |  | — |  |  | $ | 14,085,122 |  |  |  | — |  |  | $ | 3,831,402 |  |  |  | — |  |  |  | — |  |  | $ | 17,916,524 |
3 | The dollar amounts reported in column (d) represent the average of the amounts reported for the Corporation’s Named Executive Officers (“NEOs”) as a group (excluding Dr. Vinciarelli, who has served as our CEO for each of the years shown). The names of each of the NEOs (excluding Dr. Vinciarelli) included for purposes of calculating the average amounts in each applicable year are as follows: (i) for 2022, James F. Schmidt, Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo; (ii) for 2021, James F. Schmidt, James A. Simms, Richard J. Nagel Jr., Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo; and (iii) for 2020, James A. Simms, Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo.
4 | The dollar amounts reported in column (e) represent the average amount of “compensation actually paid” to the NEOs as a group (excluding Dr. Vinciarelli), as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual average amount of compensation earned by or paid to the NEOs as a group (excluding Dr. Vinciarelli) during the applicable year. In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to average total compensation for the NEOs as a group (excluding Dr. Vinciarelli) for each year to determine the compensation actually paid, using the same methodology described above in footnote 2:
Year |  | Average Reported Summary Compensation Table Total for Non-PEO NEOs |  |  | Average Reported Value of Equity Awards |  |  | Average Equity Award Adjustments (a) |  |  | Average Reported Change in the Actuarial Present Value of Pension Benefits |  |  | Average Pension Benefit Adjustments (b) |  |  | Average Compensation Actually Paid to Non-PEO NEOs |
2022 |  | $ | 803,540 |  |  | $ | (306,693 | ) |  | $ | (686,352 | ) |  |  | NA |  |  |  | NA |  |  | $ | (189,505 | )
2021 |  | $ | 918,714 |  |  | $ | (411,411 | ) |  | $ | 747,188 |  |  |  | NA |  |  |  | NA |  |  | $ | 1,254,491 |
2020 |  | $ | 578,776 |  |  | $ | (162,259 | ) |  | $ | 767,014 |  |  |  | NA |  |  |  | NA |  |  | $ | 1,183,531 |
(a) | The amounts deducted or added in calculating the total average equity award adjustments are as follows:
Year |  | Average Year End Fair Value of Equity Awards Granted During Applicable Year |  |  | Average Change in Fair Value as of Year-End of any Prior-Year Awards that remain Outstanding and Unvested as of Year-End |  |  | Average Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  |  | Average Change in Fair Value as of the Vesting Date of any Prior- Year Awards that Vested during the Year |  |  | Average Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year |  |  | Average Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  |  | Total Average Equity Award Adjustments |
2022 |  | $ | 266,136 |  |  | $ | (701,359 | ) |  |  | — |  |  | $ | (251,128 | ) |  |  | — |  |  |  | — |  |  | $ | (686,352 | )
2021 |  | $ | 477,342 |  |  | $ | 196,342 |  |  |  | — |  |  | $ | 73,504 |  |  |  | — |  |  |  | — |  |  | $ | 747,188 |
2020 |  | $ | 251,286 |  |  | $ | 416,846 |  |  |  | — |  |  | $ | 98,882 |  |  |  | — |  |  |  | — |  |  | $ | 767,014 |
5 | Cumulative Total Shareholder Return (TSR) is calculated on a $100 investment from the beginning of fiscal year 2020 by the share price appreciation calculated by dividing the difference between the Corporation’s share price at the end and the beginning of the measurement period by the Corporation’s share price at the beginning of the measurement period.
6 | Represents the weighted peer group Cumulative TSR, weighted according to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated. The peer group used for this purpose is the Standard & Poor’s MidCap 400 Index, which comprises the same issuers the Corporation uses in its Annual Report on Form 10-K for purposes of Item 201(e)(1)(ii) of Regulation S-K.
7 | The dollar amounts reported represent the amount of net income reflected in the Corporation’s audited financial statements for the applicable year.
8 | The dollar amounts reported represent the amount of diluted earnings per share (“EPS”) reflected in the Corporation’s audited financial statements for the applicable year.
Company Selected Measure Name | EPS |  |
Named Executive Officers, Footnote [Text Block] | The dollar amounts reported in column (d) represent the average of the amounts reported for the Corporation’s Named Executive Officers (“NEOs”) as a group (excluding Dr. Vinciarelli, who has served as our CEO for each of the years shown). The names of each of the NEOs (excluding Dr. Vinciarelli) included for purposes of calculating the average amounts in each applicable year are as follows: (i) for 2022, James F. Schmidt, Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo; (ii) for 2021, James F. Schmidt, James A. Simms, Richard J. Nagel Jr., Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo; and (iii) for 2020, James A. Simms, Philip D. Davies, Michael S. McNamara and Claudio Tuozzolo. |  |
Peer Group Issuers, Footnote [Text Block] | Represents the weighted peer group Cumulative TSR, weighted according to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated. The peer group used for this purpose is the Standard & Poor’s MidCap 400 Index, which comprises the same issuers the Corporation uses in its Annual Report on Form 10-K for purposes of Item 201(e)(1)(ii) of Regulation S-K. |  |
PEO Total Compensation Amount | $ 657,101 | $ 464,212 | $ 143,495
PEO Actually Paid Compensation Amount | $ (10,016,269) | 7,549,094 | 18,060,019
Adjustment To PEO Compensation, Footnote [Text Block] |
Year |  | Reported Summary Compensation Table Total for PEO |  |  | Reported Value of Equity Awards(a) |  |  | Equity Award Adjustments(b) |  |  | Reported Change in the Actuarial Present Value of Pension Benefits |  |  | Pension Benefit Adjustments |  |  | Compensation Actually Paid to PEO |
2022 |  | $ | 657,101 |  |  | $ | (172,142 | ) |  | $ | (10,501,218 | ) |  |  | NA |  |  |  | NA |  |  | $ | (10,016,269 | )
2021 |  | $ | 464,212 |  |  |  | — |  |  | $ | 7,084,882 |  |  |  | NA |  |  |  | NA |  |  | $ | 7,549,094 |
2020 |  | $ | 143,495 |  |  |  | — |  |  | $ | 17,916,524 |  |  |  | NA |  |  |  | NA |  |  | $ | 18,060,019 |
Year |  | Year End Fair Value of Equity Awards Granted During Applicable Year |  |  | Change in Fair Value as of Year-End of any Prior- Year Awards that remain Outstanding and Unvested as of Year-End |  |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  |  | Change in Fair Value as of the Vesting Date of any Prior- Year Awards that Vested During the Year |  |  | Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year |  |  | Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  |  | Total Equity Award Adjustments |
2022 |  | $ | 143,261 |  |  |  | — |  |  |  | — |  |  | $ | (10,644,480 | ) |  |  | — |  |  |  | — |  |  | $ | (10,501,218 | )
2021 |  |  | — |  |  | $ | 5,432,919 |  |  |  | — |  |  | $ | 1,651,962 |  |  |  | — |  |  |  | — |  |  | $ | 7,084,882 |
2020 |  |  | — |  |  | $ | 14,085,122 |  |  |  | — |  |  | $ | 3,831,402 |  |  |  | — |  |  |  | — |  |  | $ | 17,916,524 |
Non-PEO NEO Average Total Compensation Amount | $ 803,540 | 918,714 | 578,776
Non-PEO NEO Average Compensation Actually Paid Amount | $ (189,505) | 1,254,491 | 1,183,531
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] |
Year |  | Average Reported Summary Compensation Table Total for Non-PEO NEOs |  |  | Average Reported Value of Equity Awards |  |  | Average Equity Award Adjustments (a) |  |  | Average Reported Change in the Actuarial Present Value of Pension Benefits |  |  | Average Pension Benefit Adjustments (b) |  |  | Average Compensation Actually Paid to Non-PEO NEOs |
2022 |  | $ | 803,540 |  |  | $ | (306,693 | ) |  | $ | (686,352 | ) |  |  | NA |  |  |  | NA |  |  | $ | (189,505 | )
2021 |  | $ | 918,714 |  |  | $ | (411,411 | ) |  | $ | 747,188 |  |  |  | NA |  |  |  | NA |  |  | $ | 1,254,491 |
2020 |  | $ | 578,776 |  |  | $ | (162,259 | ) |  | $ | 767,014 |  |  |  | NA |  |  |  | NA |  |  | $ | 1,183,531 |
(a) | The amounts deducted or added in calculating the total average equity award adjustments are as follows:
Year |  | Average Year End Fair Value of Equity Awards Granted During Applicable Year |  |  | Average Change in Fair Value as of Year-End of any Prior-Year Awards that remain Outstanding and Unvested as of Year-End |  |  | Average Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  |  | Average Change in Fair Value as of the Vesting Date of any Prior- Year Awards that Vested during the Year |  |  | Average Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year |  |  | Average Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation |  |  | Total Average Equity Award Adjustments |
2022 |  | $ | 266,136 |  |  | $ | (701,359 | ) |  |  | — |  |  | $ | (251,128 | ) |  |  | — |  |  |  | — |  |  | $ | (686,352 | )
2021 |  | $ | 477,342 |  |  | $ | 196,342 |  |  |  | — |  |  | $ | 73,504 |  |  |  | — |  |  |  | — |  |  | $ | 747,188 |
2020 |  | $ | 251,286 |  |  | $ | 416,846 |  |  |  | — |  |  | $ | 98,882 |  |  |  | — |  |  |  | — |  |  | $ | 767,014 |
Compensation Actually Paid vs. Total Shareholder Return [Text Block] |  |  |
Compensation Actually Paid vs. Net Income [Text Block] |  |  |
Compensation Actually Paid vs. Company Selected Measure [Text Block] |  |  |
Total Shareholder Return Vs Peer Group [Text Block] |  |  |
Tabular List [Table Text Block] | The following table lists diluted EPS and three additional financial performance measures that represent important performance measures for our long-term financial success and that are therefore relevant to discretionary compensation decisions through which we seek to motivate and reward superior performance.
Diluted EPS
Revenue Growth
Gross Margin Percentage
Operating Profit Percentage
Total Shareholder Return Amount | $ 115 | 272 | 197
Peer Group Total Shareholder Return Amount | 123 | 142 | 114
Net Income (Loss) | $ 25,446,000 | $ 56,625,000 | $ 17,910,000
Company Selected Measure Amount | 0.57 | 1.26 | 0.41
PEO Name | Dr. Vinciarelli |  |
Measure [Axis]: 1 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Diluted EPS |  |
Measure [Axis]: 2 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Revenue Growth |  |
Measure [Axis]: 3 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Gross Margin Percentage |  |
Measure [Axis]: 4 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Operating Profit Percentage |  |
PEO [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  | $ 5,432,919 | $ 14,085,122
PEO [Member] | Reported Value of Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ (172,142) |  |
PEO [Member] | Equity Award Adjustments [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (10,501,218) | 7,084,882 | 17,916,524
PEO [Member] | Year End Fair Value of Equity Awards Granted During Applicable Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 143,261 |  |
PEO [Member] | Change in Fair Value as of the Vesting Date of any Prior Year Awards that Vested During the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (10,644,480) | 1,651,962 | 3,831,402
Non-PEO NEO [Member] | Reported Value of Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (306,693) | (411,411) | (162,259)
Non-PEO NEO [Member] | Equity Award Adjustments [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (686,352) | 747,188 | 767,014
Non-PEO NEO [Member] | Year End Fair Value of Equity Awards Granted During Applicable Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 266,136 | 477,342 | 251,286
Non-PEO NEO [Member] | Change in Fair Value as of YearEnd of any Prior Year Awards that remain Outstanding and Unvested as of YearEnd [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (701,359) | 196,342 | 416,846
Non-PEO NEO [Member] | Change in Fair Value as of the Vesting Date of any Prior Year Awards that Vested During the Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ (251,128) | $ 73,504 | $ 98,882

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