Stock-Based Compensation Plans - Options (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Share-Based Compensation Plans
Grants (in shares)		130
Weighted-average grant-date fair value		$ 4,132
Compensation expense	$ 2,249
Income tax expense (benefit)	(10,515)
Unrecognized compensation expense	$ 7,021
Weighted-average recognition period for unrecognized compensation expense	1 year 11 months 19 days

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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