Share-Based Compensation - Components of Awards (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 4,762	$ 4,600	$ 4,115
Income tax benefit	(947)	(581)	(1,276)
Total share-based compensation expense, net of income taxes	3,815	4,019	2,839
Stock and ESPP Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	155	96	101
Income tax benefit	(92)	(29)	(70)
Total share-based compensation expense, net of income taxes	63	67	31
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	4,607	4,504	4,014
Income tax benefit	(855)	(552)	(1,206)
Total share-based compensation expense, net of income taxes	$ 3,752	$ 3,952	$ 2,808

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

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