Pension Benefits, Other Postretirement Benefits and Employee Savings and Investment Plans (Additional Information) (Detail)	3 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) plan	Dec. 31, 2019 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of qualified noncontributory defined benefit plans | plan			1
Pension settlement charges		$ (534,000)	$ (55,000)	$ (53,213,000)
Merged plan assets		5,123,000	5,278,000
PBO of plan assets for pension plan with plan assets in excess of its PBO		28,300,000	30,000,000
PBO of plan assets for pension plan with plan assets in excess of its ABO		28,300,000	30,000,000
ABO of plan assets for pension plan with plan assets in excess of its PBO		28,300,000	30,000,000
ABO of plan assets for pension plan with plan assets in excess of its ABO		28,300,000	30,000,000
Fair value of the plan assets for pension plan with plan assets in excess of its PBO		33,500,000	35,300,000
Fair value of the plan assets for pension plan with plan assets in excess of its ABO		$ 33,500,000	$ 35,300,000
Health care cost, employees age		65 years	65 years
Health care cost trend rate annual change (percent)		0.25%
Fair Value, Recurring
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension surplus investment		$ 6,638,000	$ 9,106,000
Retirees of 65 Years Old or Younger
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate assumed for next fiscal year (percent)		6.25%	6.50%
Ultimate health care cost trend rate (percent)		4.50%
Retirees of 65 Years Old or Older
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate assumed for next fiscal year (percent)		6.25%	6.50%
Ultimate health care cost trend rate (percent)		4.50%
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension settlement charges		$ 0	$ 63,000	(53,213,000)
Merged plan assets		5,123,000	5,278,000
Plan assets		33,462,000	35,296,000	42,835,000
Annuity payments		$ 0	(237,000)
Expected long-term rate of return on plan assets (percent)		4.53%
Employer contributions		$ 0	$ 0
Pension Benefits | Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan asset allocations (percent)		90.00%	90.00%
Pension Benefits | Equity Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan asset allocations (percent)		10.00%	10.00%
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension settlement charges		$ 0	$ 0	0
Merged plan assets		0	0
Plan assets		0	0	0
Annuity payments		0	0
PBO of plan assets for other postretirement benefit plans with ABO in excess of plan assets		1,400,000	1,500,000
ABO of plan assets for other postretirement benefit plans with ABO in excess of plan assets		(1,400,000)	(1,500,000)
Employer contributions		165,000	192,000
Merged Plan | Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension settlement charges	$ (500,000)
Merged plan assets		9,700,000
Rogers Employee Savings and Investment Plan (RESIP)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions		5,600,000	$ 4,900,000	$ 4,400,000
IRS deferral limit		$ 19,500
Rogers Employee Savings and Investment Plan (RESIP) | 100% match
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee compensation subject to employer matching percent (percent)		3.50%
Rogers Employee Savings and Investment Plan (RESIP) | 100% match | 1% of compensation
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee compensation subject to employer matching percent (percent)		100.00%
Employer matching contribution (percent)		1.00%
Rogers Employee Savings and Investment Plan (RESIP) | 50% match | 5% of compensation
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee compensation subject to employer matching percent (percent)		5.00%
Employer matching contribution (percent)		50.00%
Rogers Employee Savings and Investment Plan (RESIP) | Pension Benefits | Suspense Account Held Within a Trust
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets		$ 9,200,000