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Share-Based Compensation - Components of Awards (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 1,190	$ 1,220
Income tax expense (benefit)	(309)	(257)
Total share-based compensation expense, net of income taxes	881	963
Stock and ESPP Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	75	41
Income tax expense (benefit)	(72)	0
Total share-based compensation expense, net of income taxes	3	41
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	1,115	1,179
Income tax expense (benefit)	(237)	(257)
Total share-based compensation expense, net of income taxes	$ 878	$ 922

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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