Employee Stock Plans (Tables)

3 Months Ended

Mar. 31, 2021

Stock Based Compensation

Summary of RSU activity

				Weighted
		Weighted		Average
		Average		Remaining
		Grant Date		Contractual
	Shares	Fair value		Term
Unvested at December 31, 2020	36,022	$	42.73	1.40	years
Granted	132,316	$	44.49	1.42	years
Vested	(86,375)	$	39.69
Cancelled and forfeited	(835)	$	44.49
Unvested at March 31, 2021	81,128	$	48.81	1.62	years
Expected to vest in the future at March 31, 2021	80,317	$	48.81	1.62	years