Acquisition Activity (Schedule of Acquisition Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Acquisition costs	$ 1,198	$ 0	$ 443
DTS Acquisition
Business Acquisition [Line Items]
Acquisition costs	1,198
DSI Acquisition
Business Acquisition [Line Items]
Acquisition costs			443
Accounting and legal fees | DTS Acquisition
Business Acquisition [Line Items]
Acquisition costs	341
Accounting and legal fees | DSI Acquisition
Business Acquisition [Line Items]
Acquisition costs			214
Appraisal fees | DTS Acquisition
Business Acquisition [Line Items]
Acquisition costs	18
Appraisal fees | DSI Acquisition
Business Acquisition [Line Items]
Acquisition costs			13
Investment banker fees and insurance costs | DTS Acquisition
Business Acquisition [Line Items]
Acquisition costs	$ 839
Other | DSI Acquisition
Business Acquisition [Line Items]
Acquisition costs			$ 216