Earnings per Share and Stock Plans - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Jul. 31, 2024 shares	Jun. 30, 2019 shares	Mar. 31, 2025 USD ($) $ / shares shares	Mar. 31, 2025 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	May 12, 2025 USD ($)	Mar. 24, 2025 $ / shares	Mar. 31, 2022 $ / shares	Mar. 26, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares not included in the computation of diluted loss per share because they were antidilutive (in shares)					479,000
Share-based payment arrangement, amount | $			$ 3,578	$ 3,578
Dividends declared per common share (in dollars per share) | $ / shares			$ 0.07	$ 0.28	$ 0.28	$ 0.28
Annual dividend rate (in dollars per share) | $ / shares								$ 0.28
Stock repurchase program, authorized amount | $										$ 20,000
Treasury stock (in shares)						31,000
Treasury stock, value | $						$ 1,010
Additional common shares repurchased (in shares)				293,000
Common stock aggregate cost | $				$ 9,945
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares not included in the computation of diluted loss per share because they were antidilutive (in shares)				1,756,000
ESOP Debt Guarantee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares not included in the computation of diluted loss per share because they were antidilutive (in shares)				1,756,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares not included in the computation of diluted loss per share because they were antidilutive (in shares)				1,756,000
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend distribution declared per preferred share purchase right | $							$ 2,003
2016 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, number of additional shares authorized (in shares)	2,800,000	2,500,000
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock which may be granted under the plan (in shares)			5,300,000	5,300,000
Long Term Incentive Plan | Cost of Goods Sold, Selling, and General and Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense | $				$ 6,256	$ 12,039	$ 10,425
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares not included in the computation of diluted loss per share because they were antidilutive (in shares)					165,000
Weighted average fair value grant price (in dollars per share) | $ / shares			$ 33.90	$ 33.90	$ 36.13	$ 34.49			$ 35.35
ESOP Debt Guarantee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average exercise price (in dollars per share) | $ / shares			$ 36.38	$ 36.38	$ 35.37	$ 34.54			$ 33.82
ESOP Debt Guarantee | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants (in shares)			2,562,000	2,562,000
Period options generally become exercisable				3 years
Vesting percentage				33.00%
Share based compensation, exercise price, percent of fair market value			1	1
Number of options outstanding, in-the-money (in shares)			51,957	51,957
Number of options, exercisable, in-the-money			51,957	51,957
Closing stock price (in dollars per share) | $ / shares			$ 16.70	$ 16.70
Total intrinsic value of stock options exercised | $				$ 120	$ 870	$ 360
Grant date fair value of options that vested (in dollars per share) | $ / shares				$ 11.55	$ 11.00	$ 10.36
Unrecognized compensation cost related to non-vested stock options | $			$ 2,615	$ 2,615
Weighted average period of recognition for unrecognized compensation cost				1 year 8 months 12 days
Weighted-average fair value of options (in dollars per share) | $ / shares				$ 17.13	$ 12.97	$ 11.13
ESOP Debt Guarantee | Long Term Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average exercise price (in dollars per share) | $ / shares			$ 15.16	15.16
ESOP Debt Guarantee | Long Term Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average exercise price (in dollars per share) | $ / shares			$ 54.26	$ 54.26
ESOP Debt Guarantee | Stock Incentive Plan of Magnetek
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants (in shares)			164,461	164,461
Restricted Stock | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition for unrecognized compensation cost				1 year 9 months 18 days
Total unrecognized compensation cost related to unvested restricted stock units | $			$ 3,356	$ 3,356
Fair value of restricted stock units that vested during the period | $				$ 4,922	$ 5,720
Restricted Stock | Long Term Incentive Plan | Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				33.33%
Restricted Stock | Long Term Incentive Plan | Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				33.33%
Restricted Stock | Long Term Incentive Plan | Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				33.33%
Directors Stock Plan | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense | $				$ 1,057	$ 1,174	$ 1,194
Shares of stock granted under the LTIP to non-executive directors (in shares)				28,112	28,512	41,313
Weighted average fair value grant price (in dollars per share) | $ / shares			$ 37.61	$ 37.61	$ 41.17	$ 28.91