Leases (Lease Payments) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finance Leases Signed
2020	$ 139
2021	4,584
2022	193
2023	186
2024	0
Thereafter	0
Total lease payments	5,102
Less: Interest	(124)
Present Value of Net Future Minimum Lease Payments	4,978
Finance Leases Less: Leases Not Yet Commenced
2020	0
2021	(193)
2022	(193)
2023	(186)
2024	0
Thereafter	0
Total lease payments	(572)
Less: Interest	27
Present Value of Net Future Minimum Lease Payments	(545)
Total Finance Leases
2020	139
2021	4,391
2022	0
2023	0
2024	0
Thereafter	0
Total lease payments	4,530
Less: Interest	(97)
Total finance lease obligations	4,433	$ 4,540
Operating Leases Signed
2020	674
2021	2,002
2022	1,096
2023	454
2024	211
Thereafter	5
Total lease payments	4,442
Less: Interest	(236)
Present Value of Net Future Minimum Lease Payments	4,206
Operating Leases Less: Leases Not Yet Commenced
2020	(2)
2021	(12)
2022	(17)
2023	(15)
2024	(5)
Thereafter	0
Total lease payments	(51)
Less: Interest	3
Present Value of Net Future Minimum Lease Payments	(48)
Total Operating Leases
2020	672
2021	1,990
2022	1,079
2023	439
2024	206
Thereafter	5
Total lease payments	4,391
Less: Interest	(233)
Total operating lease obligations	$ 4,158	$ 4,677

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Finance Lease, Liability, Commenced, Payments Due

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- Definition

Finance Lease, Liability, Commenced, To Be Paid, After Year Four

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No definition available.

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- Definition

Finance Lease, Liability, Commenced, To Be Paid, Remainder Of Fiscal Year

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- Definition

Finance Lease, Liability, Commenced, Undiscounted Excess Amount

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No definition available.

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- Definition

Finance Lease, Liability, Not Yet Commenced

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- Definition

Finance Lease, Liability, Not Yet Commenced, To Be Paid, After Year Four

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No definition available.

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- Definition

Finance Lease, Liability, Not Yet Commenced, To Be Paid, Remainder Of Fiscal Year

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No definition available.

+ Details

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- Definition

Finance Lease, Liability, Not Yet Commenced, To Be Paid, Year Four

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No definition available.

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- Definition

Finance Lease, Liability, Not Yet Commenced, To Be Paid, Year One

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No definition available.

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- Definition

Finance Lease, Liability, Not Yet Commenced, To Be Paid, Year Three

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No definition available.

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Finance Lease, Liability, Not Yet Commenced, To Be Paid, Year Two

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No definition available.

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- Definition

Finance Lease, Liability, Not Yet Commenced, Undiscounted Excess Amount

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No definition available.

+ Details

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- Definition

Finance Lease, Liability, to be Paid, after Year Four

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No definition available.

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- Definition

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No definition available.

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due After Year Four

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No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due Remainder Of Fiscal Year

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due Year Four

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due Year One

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due Year Three

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Payments, Due Year Two

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Commenced, Liability, Undiscounted Excess Amount

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Due Remainder Of Fiscal Year

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, To Be Paid, After Year Four

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No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Due Remainder Of Fiscal Year

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due

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No definition available.

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due After Year Four

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due Year Four

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due Year One

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due Year Three

+ References

No definition available.

+ Details

Name:	rog_LesseeOperatingLeaseNotYetCommencedLiabilityPaymentsDueYearThree
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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Payments, Due Year Two

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Not Yet Commenced, Liability, Undiscounted Excess Amount

+ References

No definition available.

+ Details

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- Definition

Operating Lease, Commenced, Liability

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No definition available.

+ Details

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- Definition

Operating Lease Liabilities, Commenced, Payments Due [Abstract]

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No definition available.

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Operating Lease Liabilities, Not Yet Commenced, Payments Due [Abstract]

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No definition available.

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Operating Lease, Not Yet Commenced, Liability

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No definition available.

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- References

No definition available.

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Namespace Prefix:	us-gaap_
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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease.

+ References

+ Details

Name:	us-gaap_FinanceLeaseLiabilityPaymentsDue
Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

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+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

+ Details

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