Capital Stock and Equity Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Schedule of Shares of Capital Stock Reserved for Possible Future Issuance

Shares of capital stock reserved for possible future issuance as of December 31, 2024 and 2023, were as follows:

	2024	2023
Shares reserved for issuance under outstanding restricted stock unit awards	328,957	248,055
Deferred compensation to be paid in stock, including deferred stock units	11,900	8,100
Additional shares reserved for issuance under Rogers Corporation 2019 Long-Term Equity Compensation Plan	486,947	842,046
Shares reserved for issuance under the Rogers Corporation Employee Stock Purchase Plan	43,716	59,611
Total	871,520	1,157,812

Schedule of Stockholders Equity

(Dollars in millions, except shares and per share amounts)
Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet be Purchased under the Plans or Programs
March 1, 2024 to March 31, 2024	1,500	$	109.92	1,500	$	23.8
April 1, 2024 to April 30, 2024	70,893	$	108.79	70,893	$	116.2
December 1, 2024 to December 31, 2024	116,045	$	103.58	116,045	$	104.2

Schedule of Equity Compensation Expense

The components of equity compensation expense in 2024, 2023 and 2022, were as follows:

(Dollars in millions)	2024		2023		2022
Performance-based restricted stock units	$	6.0	$	3.7	$	2.3
Time-based restricted stock units	7.3		9.2		8.2
Deferred stock units	1.3		1.3		1.3
Other	0.5		0.1		—
Total equity compensation expense	$	15.1	$	14.3	$	11.8

Schedule of Weighted-Average Assumptions Used

Below were the assumptions used in the Monte Carlo calculation for each material award granted in 2024 and 2023:

	February 19, 2024	February 13, 2024	February 9, 2023
Expected volatility	46.3%	46.2%	53.2%
Expected term (in years)	2.9 years	2.9 years	2.9 years
Risk-free interest rate	4.35%	4.35%	4.08%

Schedule of Restricted Stock And Restricted Stock Activity

A summary of activity of the outstanding performance-based restricted stock units for 2024, 2023 and 2022 is presented below:

	2024			2023			2022
	Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value
Awards outstanding as of January 1	73,528	$	247.55	65,513	$	201.18	114,554	$	196.23
Awards granted	79,700	152.53		50,551	241.47		26,819	176.33
Stock issued	—	—		(8,775)	147.58		(60,053)	179.72
Awards forfeited/cancelled	(44,122)	225.74		(33,761)	174.43		(15,807)	204.69
Awards outstanding as of December 31	109,106	$	186.96	73,528	$	247.55	65,513	$	201.18

A summary of activity of the outstanding time-based restricted stock units for 2024, 2023 and 2022 is presented below:

	2024			2023			2022
	Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value
Awards outstanding as of January 1	100,999	$	171.43	124,284	$	194.60	96,989	$	157.49
Awards granted	72,971	116.14		67,734	148.85		96,620	219.60
Stock issued	(38,795)	184.97		(62,251)	173.52		(48,253)	183.00
Awards forfeited/cancelled	(24,430)	141.73		(28,768)	213.84		(21,072)	223.90
Awards outstanding as of December 31	110,745	$	136.77	100,999	$	171.43	124,284	$	194.60

A summary of activity of the outstanding deferred stock units for 2024, 2023 and 2022 is presented below:

	2024			2023			2022
	Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value		Awards Outstanding	Weighted- Average Grant Date Fair Value
Awards outstanding as of January 1	8,100	$	161.90	6,850	$	232.51	9,500	$	173.82
Awards granted	10,950	119.91		8,100	161.90		4,800	272.12
Stock issued	(7,150)	161.89		(6,850)	232.51		(7,450)	183.20
Awards outstanding as of December 31	11,900	$	123.27	8,100	$	161.9	6,850	$	232.51