Share-Based Payments (Options and Stock Appreciation Rights Outstanding) (Details)	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Shares Available For Grant
Beginning balance (in shares)	291,000
Ending balance (in shares)	291,000
Option Outstanding, Shares
Beginning balance (in shares)	0
Exercised (in shares)	0
Forfeited (in shares)	0
Expired (in shares)	0
Stock option granted (in shares)	0
Ending balance (in shares)	0
Option Outstanding, Weighted-Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 0
Exercised (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	0
Expired (in dollars per share) | $ / shares	0
Stock option granted (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	$ 0
SAR
Liability Awards
Beginning balance (in shares)	107,517
Exercised (in shares)	(1,372)
Forfeited (in shares)	(1,797)
Granted (in shares)	0
Ending balance (in shares)	104,348
RSU
Liability Awards
Beginning balance (in shares)	14,352
Exercised (in shares)	(2,357)
Forfeited (in shares)	(259)
Granted (in shares)	0
Ending balance (in shares)	11,736
PSU
Liability Awards
Beginning balance (in shares)	19,108
Exercised (in shares)	(4,150)
Forfeited (in shares)	0
Granted (in shares)	0
Ending balance (in shares)	14,958