STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 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	300,266		118.65
Vested	(196,447)		99.58
Forfeited	(29,019)		101.93
Nonvested stock at June 30, 2022	518,119	$	110.19

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	64,668		141.41
Vested	(16,834)		96.00
Forfeited	(33,542)		95.40
Nonvested stock at June 30, 2022	166,702	$	125.08