Share-Based Compensation - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total pre-tax stock-based compensation expense charged against income	$ 6,865	$ 5,900	$ 5,985
Total recognized tax benefit related to stock-based compensation	196	1,480	5,709
Unrecognized compensation cost	$ 16,100	$ 14,000
Period of expense of unrecognized compensation cost, years	2 years 4 months 24 days	2 years 6 months
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total pre-tax stock-based compensation expense charged against income	$ 2,623	$ 2,989	3,740
Restricted stock units and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total pre-tax stock-based compensation expense charged against income	$ 3,967	2,591	1,205
Period of expense of unrecognized compensation cost, years	3 years 3 months 18 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total pre-tax stock-based compensation expense charged against income	$ 275	$ 320	$ 1,040

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

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