Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of nonvested share award activity

The following is a summary of the stock awards activity under our equity incentive plan and related information for the years ended December 31, 2023, 2022, and 2021 (dollars in thousands, except per share information):


			Number of Share Awards		Weighted-Average Grant Date Fair Value Per Share
Outstanding at December 31, 2020			1,825,280		$		132.95
Granted			740,920		$		174.32
Vested			(709,737)		$		131.54
Forfeited			(33,003)		$		99.55
Outstanding at December 31, 2021			1,823,460		$		150.89
Granted			1,032,731		$		141.58
Vested			(749,101)		$		146.25
Forfeited			(19,569)		$		160.83
Outstanding at December 31, 2022			2,087,521		$		149.96
Granted			1,522,058		$		108.22
Vested			(798,729)		$		149.41
Forfeited			(56,689)		$		104.65
Outstanding at December 31, 2023			2,754,161		$		127.34

	Year Ended December 31,
	2023		2022		2021
Total grant date fair value of stock awards vested	$	119,335	$	109,557	$	93,359
Total gross compensation recognized for stock awards	$	139,675	$	104,424	$	94,748
Capitalized stock compensation	$	56,817	$	46,684	$	46,079