XML 44 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions Used in Calculation of Fair Value

Below were the assumptions used in the Monte Carlo calculation:

		March 31, 2017		March 31, 2016
Expected volatility		33.6%		29.6%
Expected term (in years)		3.0		3.0
Risk-free interest rate		1.38%		0.93%

Summary of Activity Under Stock Option Plans

A summary of the activity under our stock option plans as of March 31, 2017 and changes during the three months then ended, is presented below:

	Options Outstanding			Weighted- Average Exercise Price Per Share				Weighted-Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Options outstanding at December 31, 2016	116,575			$	37.76			3.2		$	4,552,580
Options exercised	(22,300	)		$	34.30
Options forfeited	—			$	—
Options outstanding at March 31, 2017	94,275			$	37.46			3.1		$	4,563,655
Options exercisable at March 31, 2017	94,275			$	37.46			3.1		$	4,563,655
Options vested at March 31, 2017	94,275			$	37.46			3.1		$	4,563,655

Time Based Restricted Stock

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

The following table summarizes the change in number of non-vested time-based restricted stock awards outstanding since March 31, 2017:

	Time-Based Restricted Stock Awards
Non-vested awards outstanding at December 31, 2016	239,189
Awards granted	75,710
Stock issued	(67,183	)
Awards forfeited	(4,385	)
Non-vested awards outstanding at March 31, 2017	243,331

Performance-Based Restricted Stock

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

The following table summarizes the change in number of non-vested performance-based restricted stock awards outstanding since March 31, 2017:

	Performance-Based Restricted Stock Awards
Non-vested awards outstanding at December 31, 2016	151,769
Awards granted	56,147
Stock issued	(33,887	)
Awards forfeited	(3,205	)
Non-vested awards outstanding at March 31, 2017	170,824

Deferred Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

The following table summarizes the change in number of deferred stock units outstanding since March 31, 2017:

	Deferred Stock Units
Awards outstanding at December 31, 2016	11,900
Awards granted	—
Stock issued	—
Awards outstanding at March 31, 2017	11,900

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=rog_TimeBasedRestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=rog_DeferredStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: