Share-Based Compensation - Summary of Activity of the Outstanding PUP Awards (Details) - Performance Unit Incentive Plan ("PUP")	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance, shares | shares	59,714
Granted, shares | shares	32,367
Ending Balance, shares | shares	92,081
Beginning Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 52.10
Granted, Weighted-Average Grant Date Fair Value | $ / shares	56.23
Ending Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 55.49
Beginning Balance, shares | shares	155,190
Granted, shares | shares	52,531
Vested, shares | shares	(67,866)
Forfeited, shares | shares	(18,370)
Ending Balance, shares | shares	121,485
Beginning Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 52.53
Granted, Weighted-Average Grant Date Fair Value | $ / shares	56.10
Vested, Weighted-Average Grant Date Fair Value | $ / shares	47.43
Forfeited, Weighted-Average Grant Date Fair Value | $ / shares	56.40
Ending Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 55.08