Stock-Based Compensation - Stock-based Compensation Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) year	Mar. 31, 2019 USD ($)
Employee
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Stock Compensation Expense	$ 3,037
Weighted average remaining expense period | year	1.7
Post-Tax Expense	$ 416	$ 419
Pre-Tax Expense	526	530
Director
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Stock Compensation Expense	$ 72
Weighted average remaining expense period | year	0.1
Post-Tax Expense	$ 137	293
Pre-Tax Expense	$ 174	$ 371