STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2022

STOCK-BASED COMPENSATION

Summary of restricted stock activity

		Weighted
	Number of	average grant
	Shares	date fair value
Nonvested stock at December 31, 2021	443,319	$	99.22
Granted	253,860		120.77
Vested	(176,343)		98.19
Forfeited	(20,438)		98.98
Nonvested stock at March 31, 2022	500,398	$	110.52

Summary of performance-based restricted stock units

		Weighted
	Number of	average grant
	Shares	date fair value
Nonvested stock at December 31, 2021	152,410	$	108.41
Granted	62,388		142.05
Vested	(16,834)		96.00
Forfeited	(33,542)		95.40
Nonvested stock at March 31, 2022	164,422	$	125.10