Dividends - Schedule of Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity [Abstract]
Cash dividend paid per common share (in dollars per share)	$ 0.20375	$ 0.20250	$ 0.20125	$ 0.20	$ 0.20	$ 0.20
Total cash dividends paid	$ 15,222	$ 15,128	$ 15,033				$ 45,383	$ 44,065