Equity Incentive Plan - Restricted share activity (Details) - Restricted Shares [Member] shares in Thousands	6 Months Ended
	Jun. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Outstanding, at beginning of the period | shares	183
Shares Outstanding, granted | shares	82
Shares Outstanding, vested | shares	(51)
Shares Outstanding, forfeited | shares	(14)
Shares Outstanding, at end of the period | shares	200
Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share) | $ / shares	$ 65.46
Weighted Average Grant Date Fair Value, granted (in dollars per share) | $ / shares	73.21
Weighted Average Grant Date Fair Value, vested (in dollars per share) | $ / shares	63.74
Weighted Average Grant Date Fair Value, forfeited (in dollars per share) | $ / shares	69.01
Weighted Average Grant Date Fair Value, at end of the period (in dollars per share) | $ / shares	$ 68.81