Equity Incentive Plan - Performance share activity (Details) - $ / shares shares in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Performance units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding, at beginning of the period	111
Shares Outstanding, granted	77
Shares Outstanding, vested	(31)
Shares Outstanding, at end of the period	157	111
Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share)	$ 72.14
Weighted Average Grant Date Fair Value, granted (in dollars per share)	59.16
Weighted Average Grant Date Fair Value, vested (in dollars per share)	63.42
Weighted Average Grant Date Fair Value, at end of the period (in dollars per share)	$ 67.50	$ 72.14
Percentage of performance shares paid out	76.00%
Vesting period	3 years	3 years
Performance units and shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding, at beginning of the period	31
Shares Outstanding, granted	23
Shares Outstanding, vested	(28)
Shares Outstanding, at end of the period	26	31
Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share)	$ 83.40
Weighted Average Grant Date Fair Value, granted (in dollars per share)	63.42
Weighted Average Grant Date Fair Value, vested (in dollars per share)	75.18
Weighted Average Grant Date Fair Value, at end of the period (in dollars per share)	$ 74.58	$ 83.40
Vesting period	3 years	3 years