Stock-based compensation (Tables)

9 Months Ended

Sep. 30, 2020

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, 2018	382,186	$	36.41
Granted	218,169		55.55
Performance Shares Quantity Adjustment	15,061		55.72
Vested	(270,051)		44.73
Non-vested at December 31, 2019	345,365	$	41.68
Granted	278,326		43.21
Performance Shares Quantity Adjustment	(7)		48.79
Vested	(245,002)		43.10
Forfeited	(3,555)		43.72
Non-vested at September 30, 2020	375,127	$	41.52

Directors

Schedule of Unvested Restricted Stock Units Roll Forward

(Not in thousands)	Restricted Stock shares		Weighted-Average Grant Date Fair Value per Share	Restricted Stock units		Weighted-Average Grant Date Fair Value per Unit
Non-vested at December 31, 2018	-	$	-	-	$	-
Granted	1,052		49.25	27,449		57.64
Vested	(1,052)		49.25	(27,449)		57.64
Forfeited	-		-	-		-
Non-vested at December 31, 2019	-	$	-	-	$	-
Granted	-		-	43,084		35.46
Vested	-		-	(43,084)		35.46
Forfeited	-		-	-		-
Non-vested at September 30, 2020	-	$	-	-	$	-