Share-based Compensation - Summary of Performance Shares Activity (Details) - Performance Shares	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Shares
Outstanding, beginning balance (in shares) | shares	157,847
Granted (in shares) | shares	100,291
Vested and issued (in shares) | shares	(8,987)
Expired or forfeited (in shares) | shares	(17,334)
Outstanding, ending balance (in shares) | shares	231,817
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 43.10
Granted (in dollars per share) | $ / shares	54.79
Vested and issued (in dollars per share) | $ / shares	44.49
Expired or forfeited (in dollars per share) | $ / shares	45.61
Outstanding, ending balance (in dollars per share) | $ / shares	$ 47.91