Summary of changes in restricted stock awards (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Mar. 31, 2023	Jan. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock	69,569		69,569		50,496
Restricted stock	$ 52.03		$ 52.03		$ 50.42
Restricted stock			3 years 3 months 19 days		3 years
Restricted stock	$ 3,620		$ 3,620		$ 2,546
Restricted stock, vested			(6,211)
Restricted stock			$ 46.49
Restricted stock			$ (289)
Time Based Awards Granted [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock			7,980	7,448
Restricted stock			$ 53.86
Restricted stock			$ 430
Performance Based Awards Granted [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock	2,272	15,032	17,304	14,016
Restricted stock			$ 53.92
Restricted stock			$ 933