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Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands		9 Months Ended
	Apr. 01, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		4,347	3,680
Unrecognized stock-based compensation expense related to unvested awards, amount		$ 3,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 10 months 24 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized under the 2006 Equity Plan		500,000
Restricted Shares \| Employees \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards expiration period		1 year
Restricted Shares \| Employees \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards expiration period		5 years
2006 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under 2006 Equity Plan		891,340
Time-Based Vesting \| Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		25,107
Performance-Based Vesting \| Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		76,819
Awarded		76,819
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 396