Equity Incentive Plan - Performance share activity (Details) - $ / shares shares in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding, at beginning of the period	27
Shares Outstanding, granted	28
Shares Outstanding, vested	(23)
Shares Outstanding, at end of the period	32	27
Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share)	$ 55.29
Weighted Average Grant Date Fair Value, granted (in dollars per share)	65.66
Weighted Average Grant Date Fair Value, vested (in dollars per share)	54.83
Weighted Average Grant Date Fair Value, at end of the period (in dollars per share)	$ 57.90	$ 55.29
Percentage of performance shares paid out	106.00%
Vesting period	3 years	3 years
Performance Units And Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding, at beginning of the period	78
Shares Outstanding, granted	34
Shares Outstanding, vested	(27)
Shares Outstanding, at end of the period	85	78
Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share)	$ 63.35
Weighted Average Grant Date Fair Value, granted (in dollars per share)	68.59
Weighted Average Grant Date Fair Value, vested (in dollars per share)	65.66
Weighted Average Grant Date Fair Value, at end of the period (in dollars per share)	$ 67.64	$ 63.35
Vesting period	3 years	3 years