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Stock-Based Compensation - Stock-based Compensation Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) year	Mar. 31, 2020 USD ($)
Employee
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Stock Compensation Expense	$ 1,753
Weighted average remaining expense period | year	2.1
Pre-Tax Expense	$ 163	$ 526
Post-Tax Expense	129	416
Director
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Stock Compensation Expense	$ 38
Weighted average remaining expense period | year	0.1
Pre-Tax Expense	$ 97	174
Post-Tax Expense	$ 77	$ 137

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-Publisher FASB
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