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Share-Based Plans - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Options outstanding at beginning of period (in shares)		0	2,250
Granted (in Shares)	0	0
Exercised (in Shares)			(2,250)
Options outstanding at end of period (in shares)			0
Weighted-Average Exercise Price
Options outstanding at beginning of year (in dollars per share)			$ 37.17
Exercised (in dollars per share)			$ 37.17

X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

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Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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