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Pay vs Performance Disclosure - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
2024 PAY VERSUS PERFORMANCE
Fiscal Year
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Summary
Compensation
Table Total
 – 
CEO
(1)
($)
Compensation
Actually Paid
Total
 – CEO(2)
($)
Summary
Compensation
Table Total
 – 
Non-CEO NEO
Average
(3)
($)
Compensation
Actually Paid
Total
 – 
Non-CEO NEO
Average
(4)
($)
Value of Fixed $100
Investment Based on:
Net
Income
(7)
($M)
Adjusted
Net
Income
(8)
($M)
Adjusted
Operating
Income
(9)
($M)
MTI
TSR
(5)
($)
Peer Company
Index TSR
(6)
($)
2024 7,907,030 8,360,947 2,665,258 2,700,178 134.81 131.14 170.9 202.6 315.5
2023 8,355,252 8,952,346 2,515,894 2,592,052 125.47 145.78 88.3 174.1 279.9
2022 7,439,476 6,245,290 1,926,529 1,351,820 106.37 150.07 126.3 164.2 252.5
2021 7,085,896 8,148,175 2,513,207 2,850,830 127.74 172.36 168.5 173.8 240.7
2020 6,149,154 6,556,778 2,177,183 2,275,782 108.19 125.06 115.8 139.9 213.0
(1)
Reflects compensation amounts reported in the “Summary Compensation Table” for our CEO (our principal executive officer), Douglas T. Dietrich, for the respective years shown.
(2)
“Compensation Actually Paid” to our CEO in each of for the respective years shown reflects the respective amounts set forth in column (a) of the table above, adjusted as set forth below in Reconciliation of Summary Compensation Table to Compensation Actually Paid, in accordance with SEC rules.
(3)
Reflects average compensation amounts reported in the “Summary Compensation Table” for our non-CEO NEOs for the respective years shown. The following non-CEO NEOs are included in the average figures shown:
2024: Erik C. Aldag, D.J. Monagle, III, Brett Argirakis, Jonathan J. Hastings
2023: Erik C. Aldag, D.J. Monagle, III, Jonathan J. Hastings, Brett Argirakis
2022: Eric C. Aldag, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek, Matthew E. Garth
2021: Matthew E. Garth, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek
2020: Matthew E. Garth, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek
(4)
“Compensation Actually Paid” to our non-CEO NEOs (the persons set forth in note (3) above) in each of the respective years shown reflects the respective amounts set forth in column (c) of the table above, adjusted as set forth below in Reconciliation of Summary Compensation Table to Compensation Actually Paid, in accordance with SEC rules.
(5)
Represents the cumulative total shareholder return (TSR) of a $100 investment in the Company from the beginning of fiscal year 2020 through December 31 of each of 2024, 2023, 2022, 2021 and 2020, respectively. TSR includes share price appreciation and assumes dividend reinvestment.
(6)
Represents the cumulative TSR of a $100 investment in the group of companies used by the Company for reference in setting overall compensation for our executives (“Peer Group TSR”) from the beginning of fiscal year 2020 through December 31 of each of 2024, 2023, 2022, 2021 and 2020 respectively. The specific companies constituting such peer group in each year is set forth in the Compensation Discussion & Analysis section of the proxy statement reporting pay for such fiscal year. TSR includes share price appreciation and assumes dividend reinvestment and is weighted accordingly to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated.
(7)
Reflects “Consolidated Net Income” 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, 2024, 2023, 2022, 2021 and 2020.
(8)
Reflects “Adjusted Net Income” for each of the years ended December 31, 2024, 2023, 2022, 2021, and 2020 which is Net Income, excluding special items, which is a non-GAAP measure. Adjusted Net Income is a supplemental non-GAAP measure that we believe provides meaningful supplemental information regarding our performance, as Consolidated Net Income includes special items that are not indicative of the ongoing operating results and thereby affect the comparability of results between periods. See Appendix A for a reconciliation to GAAP Consolidated Net Income.
(9)
Company-selected measure is Adjusted Operating Income, excluding special items, which is a non-GAAP financial measure. See Appendix A for a reconciliation to GAAP Operating Income.
RECONCILIATION OF SUMMARY COMPENSATION TABLE TO COMPENSATION ACTUALLY PAID
SEC rules require certain adjustments be made to the Summary Compensation Table totals to determine CAP as reported in the “Pay Versus Performance Table” above. The CAP amounts do not reflect the actual amount of compensation earned by or paid to our executives during the applicable years, but rather are amounts determined in accordance with Item 402(v) of Regulation S-K.
The following table details the applicable adjustments that were made to determine CAP (all amounts for the NEOs other than the CEO are averages):
Executive
Fiscal
Year
Reported
Summary
Compensation
Table Total

($)
Deduct:
Reported Value
of Equity
Awards
(1)
($)
Add:
Equity Award
Adjustments
(2)
($)
Deduct:
Reported Change in the
Actuarial Present Value
of Pension Benefits
(3)
($)
Add:
Pension Benefit
Adjustments
(4)
($)
Compensation
Actually Paid

($)
CEO
2024 7,907,030 2,923,868 3,123,471 (180,815) 73,499 8,360,947
2023 8,355,252 3,644,434 4,578,216 413,206 76,518 8,952,346
2022 7,439,476 3,193,769 2,289,319 366,896 77,160 6,245,290
2021 7,085,896 2,880,003 3,906,225 47,892 83,949 8,148,175
2020 6,149,154 2,880,022 3,323,929 113,871 77,588 6,556,778
Non-CEO Named Executive Officers
2024 2,665,258 822,630 884,301 36,545 9,794 2,700,178
2023 2,515,894 907,850 1,115,584 140,946 9,370 2,592,052
2022 1,926,529 784,613 232,604 37,104 14,404 1,351,820
2021 2,513,207 839,071 1,169,933 13,690 20,451 2,850,830
2020 2,177,183 812,473 924,410 34,522 21,184 2,275,782
(1)
The reported value of equity awards represents the grant date fair value of equity awards as reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for each applicable year.
(2)
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 in fair value as of the end of the applicable year (from the end of the prior fiscal year) 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 in fair value as of the vesting date (from the end of the prior fiscal year);
(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 equity 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 amounts deducted or added in calculating the equity award adjustments are as follows:
Executive
Fiscal
Year
Year End Fair
Value of
Equity
Awards
Granted
During the
Year

($)
Year-over-Year
Change in Fair
Value of
Outstanding
and Unvested
Equity Awards

($)
Fair Value as
of Vesting
Date of Equity
Awards
Granted and
Vested in
the Year

($)
Year-over-Year
Change in Fair
Value of Equity
Awards
Granted in
Prior Years
that Vested in
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

($)
CEO
2024 3,231,960 150,683 (259,172) 3,123,471
2023 3,882,533 411,274 284,409 4,578,216
2022 2,876,810 (481,710) (105,781) 2,289,319
2021 3,318,797 465,055 122,373 3,906,225
2020 3,210,509 137,746 (24,326) 3,323,929
Non-CEO Named Executive Officers
2024 909,311 35,872 (60,882) 884,301
2023 967,482 89,057 59,045 1,115,584
2022 543,381 (85,220) (26,604) (198,953) 232,604
2021 967,065 139,116 63,752 1,169,933
2020 905,705 51,679 (32,974) 924,410
(3)
The amounts in this column represent the amounts reported in “Change in Pension and Nonqualified Deferred Compensation” column of the Summary Compensation Table for each applicable year.
(4)
The total pension benefit adjustments for each applicable year include the aggregate of two components: (i) the actuarially determined service cost for services rendered by the executive during the applicable year (the “service cost”); and (ii) the entire cost of benefits granted in a plan amendment (or initiation) during the applicable year that are attributed by the benefit formula to services rendered in periods prior to the plan amendment or initiation (the “prior service cost”), in each case, calculated in accordance with U.S. GAAP. The amounts deducted or added in calculating the pension benefit adjustments are as follows:
Executive
Fiscal
Year
Service Cost
($)
Prior Service Cost
($)
Total Pension Benefit
Adjustments

($)
CEO
2024 73,499 73,499
2023 76,518 76,518
2022 77,160 77,160
2021 83,949 83,949
2020 77,588 77,588
Non-CEO Named Executive Officers
2024 9,794 9,794
2023 9,370 9,370
2022 14,404 14,404
2021 20,451 20,451
2020 21,184 21,184
       
Company Selected Measure Name Adjusted Operating Income        
Named Executive Officers, Footnote
Reflects compensation amounts reported in the “Summary Compensation Table” for our CEO (our principal executive officer), Douglas T. Dietrich, for the respective years shown.
Reflects average compensation amounts reported in the “Summary Compensation Table” for our non-CEO NEOs for the respective years shown. The following non-CEO NEOs are included in the average figures shown:
2024: Erik C. Aldag, D.J. Monagle, III, Brett Argirakis, Jonathan J. Hastings
2023: Erik C. Aldag, D.J. Monagle, III, Jonathan J. Hastings, Brett Argirakis
2022: Eric C. Aldag, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek, Matthew E. Garth
2021: Matthew E. Garth, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek
2020: Matthew E. Garth, D.J. Monagle, III, Jonathan J. Hastings, Thomas J. Meek
       
Peer Group Issuers, Footnote
Represents the cumulative TSR of a $100 investment in the group of companies used by the Company for reference in setting overall compensation for our executives (“Peer Group TSR”) from the beginning of fiscal year 2020 through December 31 of each of 2024, 2023, 2022, 2021 and 2020 respectively. The specific companies constituting such peer group in each year is set forth in the Compensation Discussion & Analysis section of the proxy statement reporting pay for such fiscal year. TSR includes share price appreciation and assumes dividend reinvestment and is weighted accordingly to the respective companies’ stock market capitalization at the beginning of each period for which a return is indicated.
       
PEO Total Compensation Amount $ 7,907,030 $ 8,355,252 $ 7,439,476 $ 7,085,896 $ 6,149,154
PEO Actually Paid Compensation Amount $ 8,360,947 8,952,346 6,245,290 8,148,175 6,556,778
Adjustment To PEO Compensation, Footnote
The following table details the applicable adjustments that were made to determine CAP (all amounts for the NEOs other than the CEO are averages):
Executive
Fiscal
Year
Reported
Summary
Compensation
Table Total

($)
Deduct:
Reported Value
of Equity
Awards
(1)
($)
Add:
Equity Award
Adjustments
(2)
($)
Deduct:
Reported Change in the
Actuarial Present Value
of Pension Benefits
(3)
($)
Add:
Pension Benefit
Adjustments
(4)
($)
Compensation
Actually Paid

($)
CEO
2024 7,907,030 2,923,868 3,123,471 (180,815) 73,499 8,360,947
2023 8,355,252 3,644,434 4,578,216 413,206 76,518 8,952,346
2022 7,439,476 3,193,769 2,289,319 366,896 77,160 6,245,290
2021 7,085,896 2,880,003 3,906,225 47,892 83,949 8,148,175
2020 6,149,154 2,880,022 3,323,929 113,871 77,588 6,556,778
Non-CEO Named Executive Officers
2024 2,665,258 822,630 884,301 36,545 9,794 2,700,178
2023 2,515,894 907,850 1,115,584 140,946 9,370 2,592,052
2022 1,926,529 784,613 232,604 37,104 14,404 1,351,820
2021 2,513,207 839,071 1,169,933 13,690 20,451 2,850,830
2020 2,177,183 812,473 924,410 34,522 21,184 2,275,782
(1)
The reported value of equity awards represents the grant date fair value of equity awards as reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for each applicable year.
(2)
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 in fair value as of the end of the applicable year (from the end of the prior fiscal year) 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 in fair value as of the vesting date (from the end of the prior fiscal year);
(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 equity 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 amounts deducted or added in calculating the equity award adjustments are as follows:
Executive
Fiscal
Year
Year End Fair
Value of
Equity
Awards
Granted
During the
Year

($)
Year-over-Year
Change in Fair
Value of
Outstanding
and Unvested
Equity Awards

($)
Fair Value as
of Vesting
Date of Equity
Awards
Granted and
Vested in
the Year

($)
Year-over-Year
Change in Fair
Value of Equity
Awards
Granted in
Prior Years
that Vested in
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

($)
CEO
2024 3,231,960 150,683 (259,172) 3,123,471
2023 3,882,533 411,274 284,409 4,578,216
2022 2,876,810 (481,710) (105,781) 2,289,319
2021 3,318,797 465,055 122,373 3,906,225
2020 3,210,509 137,746 (24,326) 3,323,929
Non-CEO Named Executive Officers
2024 909,311 35,872 (60,882) 884,301
2023 967,482 89,057 59,045 1,115,584
2022 543,381 (85,220) (26,604) (198,953) 232,604
2021 967,065 139,116 63,752 1,169,933
2020 905,705 51,679 (32,974) 924,410
(3)
The amounts in this column represent the amounts reported in “Change in Pension and Nonqualified Deferred Compensation” column of the Summary Compensation Table for each applicable year.
(4)
The total pension benefit adjustments for each applicable year include the aggregate of two components: (i) the actuarially determined service cost for services rendered by the executive during the applicable year (the “service cost”); and (ii) the entire cost of benefits granted in a plan amendment (or initiation) during the applicable year that are attributed by the benefit formula to services rendered in periods prior to the plan amendment or initiation (the “prior service cost”), in each case, calculated in accordance with U.S. GAAP. The amounts deducted or added in calculating the pension benefit adjustments are as follows:
Executive
Fiscal
Year
Service Cost
($)
Prior Service Cost
($)
Total Pension Benefit
Adjustments

($)
CEO
2024 73,499 73,499
2023 76,518 76,518
2022 77,160 77,160
2021 83,949 83,949
2020 77,588 77,588
Non-CEO Named Executive Officers
2024 9,794 9,794
2023 9,370 9,370
2022 14,404 14,404
2021 20,451 20,451
2020 21,184 21,184
       
Non-PEO NEO Average Total Compensation Amount $ 2,665,258 2,515,894 1,926,529 2,513,207 2,177,183
Non-PEO NEO Average Compensation Actually Paid Amount $ 2,700,178 2,592,052 1,351,820 2,850,830 2,275,782
Adjustment to Non-PEO NEO Compensation Footnote
The following table details the applicable adjustments that were made to determine CAP (all amounts for the NEOs other than the CEO are averages):
Executive
Fiscal
Year
Reported
Summary
Compensation
Table Total

($)
Deduct:
Reported Value
of Equity
Awards
(1)
($)
Add:
Equity Award
Adjustments
(2)
($)
Deduct:
Reported Change in the
Actuarial Present Value
of Pension Benefits
(3)
($)
Add:
Pension Benefit
Adjustments
(4)
($)
Compensation
Actually Paid

($)
CEO
2024 7,907,030 2,923,868 3,123,471 (180,815) 73,499 8,360,947
2023 8,355,252 3,644,434 4,578,216 413,206 76,518 8,952,346
2022 7,439,476 3,193,769 2,289,319 366,896 77,160 6,245,290
2021 7,085,896 2,880,003 3,906,225 47,892 83,949 8,148,175
2020 6,149,154 2,880,022 3,323,929 113,871 77,588 6,556,778
Non-CEO Named Executive Officers
2024 2,665,258 822,630 884,301 36,545 9,794 2,700,178
2023 2,515,894 907,850 1,115,584 140,946 9,370 2,592,052
2022 1,926,529 784,613 232,604 37,104 14,404 1,351,820
2021 2,513,207 839,071 1,169,933 13,690 20,451 2,850,830
2020 2,177,183 812,473 924,410 34,522 21,184 2,275,782
(1)
The reported value of equity awards represents the grant date fair value of equity awards as reported in the “Stock Awards” and “Option Awards” columns of the Summary Compensation Table for each applicable year.
(2)
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 in fair value as of the end of the applicable year (from the end of the prior fiscal year) 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 in fair value as of the vesting date (from the end of the prior fiscal year);
(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 equity 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 amounts deducted or added in calculating the equity award adjustments are as follows:
Executive
Fiscal
Year
Year End Fair
Value of
Equity
Awards
Granted
During the
Year

($)
Year-over-Year
Change in Fair
Value of
Outstanding
and Unvested
Equity Awards

($)
Fair Value as
of Vesting
Date of Equity
Awards
Granted and
Vested in
the Year

($)
Year-over-Year
Change in Fair
Value of Equity
Awards
Granted in
Prior Years
that Vested in
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

($)
CEO
2024 3,231,960 150,683 (259,172) 3,123,471
2023 3,882,533 411,274 284,409 4,578,216
2022 2,876,810 (481,710) (105,781) 2,289,319
2021 3,318,797 465,055 122,373 3,906,225
2020 3,210,509 137,746 (24,326) 3,323,929
Non-CEO Named Executive Officers
2024 909,311 35,872 (60,882) 884,301
2023 967,482 89,057 59,045 1,115,584
2022 543,381 (85,220) (26,604) (198,953) 232,604
2021 967,065 139,116 63,752 1,169,933
2020 905,705 51,679 (32,974) 924,410
(3)
The amounts in this column represent the amounts reported in “Change in Pension and Nonqualified Deferred Compensation” column of the Summary Compensation Table for each applicable year.
(4)
The total pension benefit adjustments for each applicable year include the aggregate of two components: (i) the actuarially determined service cost for services rendered by the executive during the applicable year (the “service cost”); and (ii) the entire cost of benefits granted in a plan amendment (or initiation) during the applicable year that are attributed by the benefit formula to services rendered in periods prior to the plan amendment or initiation (the “prior service cost”), in each case, calculated in accordance with U.S. GAAP. The amounts deducted or added in calculating the pension benefit adjustments are as follows:
Executive
Fiscal
Year
Service Cost
($)
Prior Service Cost
($)
Total Pension Benefit
Adjustments

($)
CEO
2024 73,499 73,499
2023 76,518 76,518
2022 77,160 77,160
2021 83,949 83,949
2020 77,588 77,588
Non-CEO Named Executive Officers
2024 9,794 9,794
2023 9,370 9,370
2022 14,404 14,404
2021 20,451 20,451
2020 21,184 21,184
       
Compensation Actually Paid vs. Total Shareholder Return [MISSING IMAGE: bc_tsr-pn.jpg]        
Compensation Actually Paid vs. Net Income [MISSING IMAGE: bc_netincome-pn.jpg]        
Compensation Actually Paid vs. Company Selected Measure
[MISSING IMAGE: bc_operatingincome-pn.jpg]
       
Total Shareholder Return Vs Peer Group [MISSING IMAGE: bc_tsr-pn.jpg]        
Tabular List, Table
OUR MOST IMPORTANT METRICS USED FOR LINKING PAY AND PERFORMANCE
Measure
Explanation
ADJUSTED OPERATING INCOME (OI)
Operating Income, excluding special items (a non-GAAP financial measure), is a component of our Annual Incentive Plan. It measures the immediate impact of operating decisions on the Company’s annual performance.
RETURN ON NET ASSETS (RONA)
Return on Net Assets is a component of our Annual Incentive Plan. RONA is a financial measure that measures the efficiency with which we allocate capital resources and profitability, with our business leadership having direct influence on the outcome of this metric.
RETURN ON CAPITAL (ROC)
Return on Capital is a component of our Performance Units. ROC is a financial measure that measures the efficiency with which we allocate capital resources, considering not just the quantity of earnings, but also the quality of earnings and investments that drive sustainable growth.
TOTAL SHAREHOLDER RETURN (TSR) VS. OUR PEERS AND THE COMPANIES IN THE RUSSELL 2000 AND S&P SMALLCAP 600 INDICES
TSR vs. Our Peers and the Companies in the Russell 2000 and S&P SmallCap 600 Indices is a component of our Performance Units. TSR measures our ability to return value to our shareholders compared to our peers and to broader indices reflecting comparable investment opportunities.
WORKING CAPITAL
Working Capital Improvement is a significant portion of the Personal Performance component of our Annual Incentive Plan.
OVERALL LEADERSHIP, INCLUDING DEPLOYMENT OF LEAN OPERATING PRINCIPLES AND ACHIEVEMENT OF HOSHIN PLANS
Overall Leadership (a non-financial performance measure) encompasses contributions to safety and sustainability, diversity and inclusion, and other areas of importance to the Company.
Deployment of Lean Operating Principles (a non-financial performance measure) measures adherence to a key cultural element of the Company.
Hoshin is a structured methodology for executing and achieving strategic goals and objectives. Together, this is a significant portion of the Personal Performance component of our Annual Incentive Plan.
       
Total Shareholder Return Amount $ 134.81 125.47 106.37 127.74 108.19
Peer Group Total Shareholder Return Amount 131.14 145.78 150.07 172.36 125.06
Net Income (Loss) $ 170,900,000 $ 88,300,000 $ 126,300,000 $ 168,500,000 $ 115,800,000
Company Selected Measure Amount 315,500,000 279,900,000 252,500,000 240,700,000 213,000,000
PEO Name Douglas T. Dietrich        
Measure:: 1          
Pay vs Performance Disclosure          
Compensation Actually Paid vs. Other Measure [MISSING IMAGE: bc_netincome-pn.jpg]        
Other Performance Measure, Amount 202,600,000 174,100,000 164,200,000 173,800,000 139,900,000
Name Adjusted Net Income        
Non-GAAP Measure Description
Reflects “Adjusted Net Income” for each of the years ended December 31, 2024, 2023, 2022, 2021, and 2020 which is Net Income, excluding special items, which is a non-GAAP measure. Adjusted Net Income is a supplemental non-GAAP measure that we believe provides meaningful supplemental information regarding our performance, as Consolidated Net Income includes special items that are not indicative of the ongoing operating results and thereby affect the comparability of results between periods. See Appendix A for a reconciliation to GAAP Consolidated Net Income.
       
Measure:: 2          
Pay vs Performance Disclosure          
Name ADJUSTED OPERATING INCOME (OI)        
Non-GAAP Measure Description
Company-selected measure is Adjusted Operating Income, excluding special items, which is a non-GAAP financial measure. See Appendix A for a reconciliation to GAAP Operating Income.
       
Measure:: 3          
Pay vs Performance Disclosure          
Name RETURN ON NET ASSETS (RONA)        
Measure:: 4          
Pay vs Performance Disclosure          
Name RETURN ON CAPITAL (ROC)        
Measure:: 5          
Pay vs Performance Disclosure          
Name TOTAL SHAREHOLDER RETURN (TSR) VS. OUR PEERS AND THE COMPANIES IN THE RUSSELL 2000 AND S&P SMALLCAP 600 INDICES        
Measure:: 6          
Pay vs Performance Disclosure          
Name WORKING CAPITAL        
Measure:: 7          
Pay vs Performance Disclosure          
Name OVERALL LEADERSHIP, INCLUDING DEPLOYMENT OF LEAN OPERATING PRINCIPLES AND ACHIEVEMENT OF HOSHIN PLANS        
PEO | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ (180,815) $ 413,206 $ 366,896 $ 47,892 $ 113,871
PEO | Aggregate Pension Adjustments Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 73,499 76,518 77,160 83,949 77,588
PEO | Pension Adjustments Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 73,499 76,518 77,160 83,949 77,588
PEO | Pension Adjustments Prior Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 2,923,868 3,644,434 3,193,769 2,880,003 2,880,022
PEO | Equity Awards Adjustments, Excluding Value Reported in Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 3,123,471 4,578,216 2,289,319 3,906,225 3,323,929
PEO | 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 150,683 411,274 (481,710) 465,055 137,746
PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
PEO | 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 (259,172) 284,409 (105,781) 122,373 (24,326)
PEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
PEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
PEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 3,231,960 3,882,533 2,876,810 3,318,797 3,210,509
Non-PEO NEO | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 36,545 140,946 37,104 13,690 34,522
Non-PEO NEO | Aggregate Pension Adjustments Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 9,794 9,370 14,404 20,451 21,184
Non-PEO NEO | Pension Adjustments Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 9,794 9,370 14,404 20,451 21,184
Non-PEO NEO | Pension Adjustments Prior Service Cost          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
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 822,630 907,850 784,613 839,071 812,473
Non-PEO NEO | Equity Awards Adjustments, Excluding Value Reported in Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 884,301 1,115,584 232,604 1,169,933 924,410
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 35,872 89,057 (85,220) 139,116 51,679
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
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 (60,882) 59,045 (26,604) 63,752 (32,974)
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (198,953)
Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount
Non-PEO NEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 909,311 $ 967,482 $ 543,381 $ 967,065 $ 905,705