Shareholders' Equity

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Shareholders' Equity

Shareholders’ Equity

The following table details activity in our common stock:

	Three Months Ended March 31,
	2020			2019
	Shares	Amount		Shares	Amount
Purchases of treasury shares	(59)	$	(15,482)	(72)	$	(14,289)
Stock option exercises	481	46,236		94	6,564
Employee stock plan purchases	10	2,469		15	2,349
Restricted stock units vested, net of withheld shares upon award settlement	10	$	(2,301)	10	$	(1,373)

As of March 31, 2020, we have authorization from our board of directors to repurchase up to 2.6 million additional shares of our common stock.