v3.26.1
Pay vs Performance Disclosure - USD ($)
 4 Months Ended 5 Months Ended 7 Months Ended 8 Months Ended 12 Months Ended
May 04, 2021
Jun. 05, 2024
Dec. 31, 2024
Dec. 31, 2021
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pay vs Performance Disclosure                  
Pay vs Performance Disclosure, Table        
Year
Summary Compensation Table
Total for PEOs ($)
Compensation Actually Paid for
PEOs ($)
Average
Summary
Compensation
Table Total for
Non-PEO NEOs
($)
Average
Compensation
Actually Paid
to Non-PEO
NEOs
($)
Value of
Initial Fixed
$100
Investment
Based On:
Net
Income
($M)
Net
Sales
($M)
Mark Gitin
Eugene
Scherbakov
Valentin
Gapontsev
Mark Gitin
Eugene
Scherbakov
Valentin GapontsevTSR
($)
Peer
Group
TSR
($)
(a)
(b)
(b)
(b)
(c)
(c)
(c)
(d)(e)(f)(g)(h)(i)
20259,071,490 — — 9,885,849 — — 2,362,128 2,450,648 32 205 31 1,004 
20246,700,825 6,099,458 — 4,590,319 408,369 — 2,370,116 704,222 32 142 (182)977 
2023— 5,725,552 — — 4,897,587 — 1,999,742 1,783,708 49 122 219 1,287 
2022— 6,635,520 — — 1,176,438 — 2,093,139 178,305 42 101 111 1,430 
2021— 7,284,851 3,254,034 — 1,633,757 3,254,034 2,641,365 414,607 77 129 278 1,461 
        
Company Selected Measure Name         net sales        
Named Executive Officers, Footnote         Reflects compensation amounts reported in the “Total” column of the Summary Compensation Table for Dr. Mark Gitin, Dr. Eugene Scherbakov and Dr. Valentin Gapontsev, for the respective years shown. Dr. Gapontsev was CEO until May 4, 2021, when Dr. Scherbakov succeeded him. Dr. Scherbakov was CEO from May 4, 2021 to June 5, 2024, when Dr. Gitin succeeded him.The dollar amounts reported under Average Summary Compensation Table Total for non-PEO NEOs represent the average of the amounts reported for the Company’s NEOs as a group (excluding any individual serving as our CEO for such year) in the “Total” column of the Summary Compensation Table in each applicable year. The names of the NEOs included for purposes of calculating the average amounts in each applicable year are as follows: (i) for 2025, Paulus Bucher, Angelo Lopresti, Timothy Mammen and Trevor Ness; (ii) for 2024, Angelo Lopresti, Timothy Mammen, Trevor Ness, Alexander Ovtchinnikov and Igor Samartsev; (ii) for 2023, Angelo Lopresti, Timothy Mammen, Trevor Ness and Alexander Ovtchinnikov; and (ii) for 2022 and 2021, Angelo Lopresti, Timothy Mammen, Alexander Ovtchinnikov and Felix Stukalin.        
Peer Group Issuers, Footnote         For the relevant fiscal year, represents the cumulative TSR of the S&P Composite 1500 - Electronic Equipment, Instruments & Components Index, a published industry index ("Peer Group TSR") for the measurement periods beginning at the start of fiscal year 2021 and ending on December 31 of each of 2025, 2024, 2023, 2022 and 2021, respectively, assuming an initial investment of $100.        
Adjustment To PEO Compensation, Footnote         The dollar amounts reported for Drs. Gitin, Scherbakov and Gapontsev under Compensation Actually Paid represent the amount of “compensation actually paid” to such executive, as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned by or paid to Dr. Gitin or Dr. Scherbakov during the applicable year. Dr. Gapontsev’s “compensation actually paid” is the same as the total from the Summary Compensation Table because Dr. Gapontsev did not receive long-term incentive compensation in light of his significant level of common stock ownership, which the independent directors believed provided him with sufficient incentives to act in the best long-term interest of our stockholders during the time he was an executive of the Company. In accordance with the requirements of Item 402(v) of Regulation S-K, the adjustments in the table below were made to Dr. Gitin's total compensation for 2025 to determine the compensation actually paid:
2025
Dr. Mark Gitin
Total Compensation as reported in Summary Compensation Table ($)
9,071,490 
Less: Fair value of equity awards granted during fiscal year ($)
(6,999,990)
Plus: Fair value of equity awards granted in current year—value at end of year-end ($)
7,889,174 
Change in fair value from end of prior fiscal year to vesting date for awards made in prior fiscal years that vested during current fiscal year ($)
(41,075)
Change in fair value from end of prior fiscal year to end of current fiscal year for awards made in prior fiscal years that were unvested at end of current fiscal year ($)
(33,750)
Compensation Actually Paid ($)9,885,849 
Equity Valuations: PSU grant date fair values are calculated using the stock price as of date of grant assuming target performance. Adjustments have been made using the stock price and performance accrual modifier as of year-end and as of the date of vesting. RSU grant date fair values are calculated using the stock price as of date of grant. Adjustments have been made using the stock price as of year-end and as of each date of vesting. Stock option fair values are calculated based on the Black-Scholes option pricing model. Adjustments have been made to generate fair values as of each measurement date using the stock price as of the measurement date and updated assumptions (i.e., term, volatility, dividend yield, risk free rates) as of the measurement date. 		       
Non-PEO NEO Average Total Compensation Amount         $ 2,362,128 $ 2,370,116 $ 1,999,742 $ 2,093,139 $ 2,641,365
Non-PEO NEO Average Compensation Actually Paid Amount         $ 2,450,648 704,222 1,783,708 178,305 414,607
Adjustment to Non-PEO NEO Compensation Footnote         The dollar amounts reported under Average Compensation Actually Paid for non-PEO NEOs represent the average amount of “compensation actually paid” to the NEOs as a group (excluding the CEO), 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 during the applicable year. In accordance with the requirements of Item 402(v) of Regulation S-K, the adjustments in the table below were made to the NEOs’ average total compensation for each year to determine the compensation actually paid:

Non-PEO NEOs
2025
Average
Total Compensation as reported in Summary Compensation Table ($)
2,362,128 
Less: Fair value of equity awards granted during fiscal year ($)
(1,485,640)
Plus: Fair value of equity awards granted in current year—value at end of year-end ($)
1,646,693 
Change in fair value from end of prior fiscal year to vesting date for awards made in prior fiscal years that vested during current fiscal year ($)
(61,756)
Change in fair value from end of prior fiscal year to end of current fiscal year for awards made in prior fiscal years that were unvested at end of current fiscal year ($)
(10,777)
Compensation Actually Paid ($)
2,450,648 
Equity Valuations for purposes of this table were calculated in the same manner as described in columns (c) above. 		       
Compensation Actually Paid vs. Total Shareholder Return        
7754
        
Compensation Actually Paid vs. Net Income        
7756
        
Compensation Actually Paid vs. Company Selected Measure        
7758
        
Total Shareholder Return Vs Peer Group        
7754
        
Tabular List, Table        
•Net Sales (annual incentive and long-term incentive (PSUs))
•Adjusted EBIT (annual incentive)
•Adjusted EBITDA (long-term incentive (PSUs))
•Working Capital (long-term incentive (PSUs))
        
Total Shareholder Return Amount         $ 32 32 49 42 77
Peer Group Total Shareholder Return Amount         205 142 122 101 129
Net Income (Loss)         $ 31,000,000 $ (182,000,000) $ 219,000,000 $ 111,000,000 $ 278,000,000
Company Selected Measure Amount         1,004,000,000 977,000,000 1,287,000,000 1,430,000,000 1,461,000,000
PEO Name Dr. Valentin Gapontsev Dr. Eugene Scherbakov Dr. Mark Gitin Dr. Eugene Scherbakov Dr. Mark Gitin   Dr. Eugene Scherbakov Dr. Eugene Scherbakov  
Additional 402(v) Disclosure         For the relevant fiscal year, represents the Company's cumulative total stockholder return (TSR) for the measurement periods beginning at the start of fiscal year 2021 and ending on December 31 of each of 2021, 2022, 2023, 2024 and 2025, respectively, assuming an initial investment of $100. Reflects “net income” as reported in the Company’s Consolidated Income Statements included in the Company’s Annual Reports on Form 10-K for each of the years ended December 31, 2025, 2024, 2023, 2022 and 2021. As previously disclosed, 2024 figures include a loss on divestiture related to our sale of our Russian subsidiary, as well as impairment of long-lived assets in Belarus, and 2022 figures include significant inventory related charges, impairment of long-lived assets in Russia and restructuring charges in Russia.        
Measure:: 1                  
Pay vs Performance Disclosure                  
Name         Net Sales (annual incentive and long-term incentive (PSUs))        
Non-GAAP Measure Description         Company-selected Measure is net sales as reported in the Company’s Consolidated Income Statements included in the Company’s Annual Reports on Form 10-K for each of the years ended December 31, 2025, 2024, 2023, 2022, and 2021.        
Measure:: 2                  
Pay vs Performance Disclosure                  
Name         Adjusted EBIT (annual incentive)        
Measure:: 3                  
Pay vs Performance Disclosure                  
Name         Adjusted EBITDA (long-term incentive (PSUs))        
Measure:: 4                  
Pay vs Performance Disclosure                  
Name         Working Capital (long-term incentive (PSUs))        
Gitin [Member]                  
Pay vs Performance Disclosure                  
PEO Total Compensation Amount         $ 9,071,490 $ 6,700,825      
PEO Actually Paid Compensation Amount         9,885,849 4,590,319      
Scherbakov [Member]                  
Pay vs Performance Disclosure                  
PEO Total Compensation Amount           6,099,458 $ 5,725,552 $ 6,635,520 $ 7,284,851
PEO Actually Paid Compensation Amount           $ 408,369 $ 4,897,587 $ 1,176,438 1,633,757
Gapontsev [Member]                  
Pay vs Performance Disclosure                  
PEO Total Compensation Amount                 3,254,034
PEO Actually Paid Compensation Amount                 $ 3,254,034
PEO | Gitin [Member] | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         (6,999,990)        
PEO | Gitin [Member] | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         7,889,174        
PEO | Gitin [Member] | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         (33,750)        
PEO | Gitin [Member] | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         (41,075)        
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         (1,485,640)        
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         1,646,693        
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         (10,777)        
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year                  
Pay vs Performance Disclosure                  
Adjustment to Compensation, Amount         $ (61,756)