Stock-Based Compensation and Other Employee Benefit Plans (ESPP) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
Common shares issued (in shares)	20,191	100,660	39,033	154,059
Cash proceeds (in dollars)			$ 0	$ 3,936
Employee Stock Purchase Plans
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
ESPP purchase price, percent			85.00%
Cash proceeds (in dollars)	$ 1,800	$ 2,400	$ 3,200	3,900
Compensation expense	$ 200	$ 800	$ 500	$ 1,200