Share Repurchase Plan (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Sep. 16, 2019
Equity, Class of Treasury Stock [Line Items]
Cost to repurchase common shares	$ 12,559,000	$ 12,287,000
September 16, 2019 Plan
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount			$ 50,000,000
Repurchased common shares (in shares)	411,430
Cost to repurchase common shares	$ 12,600,000
Cost to repurchase common shares (in dollars per share)	$ 30.52