Earnings per Share (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Aug. 30, 2018
Earnings per Share [Line Items]
Total anti-dilutive shares excluded from the calculation (in shares)	101,000	0			88,000	47,000
Number of shares repurchased		0			0	489,850
Number of shares repurchased, cost			$ 3,009	$ 12,355		$ 15,400
Stock repurchase program, remaining amount	$ 59,500				$ 59,500
Maximum [Member]
Earnings per Share [Line Items]
Stock repurchase program, authorized amount							$ 100,000