Share Repurchase Plan (Details) - USD ($)	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Mar. 15, 2021
Equity, Class of Treasury Stock [Line Items]
Repurchased common shares (in shares)			411,430
Cost to repurchase common shares			$ 12,559,000
New Share Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 50,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 37,400,000	$ 37,400,000
Repurchased common shares (in shares)	0	0		411,430
Cost to repurchase common shares				$ 12,600,000
Cost to repurchase common shares (in dollars per share)				$ 30.52