Stock-based compensation (Tables)

9 Months Ended

Sep. 30, 2021

Executive Officers

Schedule of Unvested Restricted Stock Units Roll Forward

(Not in thousands)	Shares		Weighted-Average Grant Date Fair Value
Non-vested at December 31, 2019	345,365	$	41.68
Granted	253,943		42.49
Performance Shares Quantity Adjustment	(7)		48.79
Vested	(234,421)		42.64
Forfeited	(6,368)		44.26
Non-vested at December 31, 2020	358,512	$	41.23
Granted	191,479		69.38
Performance Shares Quantity Adjustment	54,306		54.21
Vested	(272,990)		55.15
Forfeited	(2,429)		42.52
Non-vested at September 30, 2021	328,878	$	47.90

Directors

Schedule of Unvested Restricted Stock Units Roll Forward

(Not in thousands)		Restricted Stock units		Weighted-Average Grant Date Fair Value per Unit
Non-vested at December 31, 2019	$	-	$	-
Granted		43,866		35.47
Vested		(43,866)		35.47
Forfeited		-		-
Non-vested at December 31, 2020	$	-	$	-
Granted		20,079		78.19
Vested		(20,079)		78.19
Forfeited		-		-
Non-vested at September 30, 2021	$	-	$	-