Shareholders' Equity

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Shareholders' Equity

Shareholders’ Equity

The following table details activity in our common stock:

	Three Months Ended March 31,
	2018			2017
	Shares	Amount		Shares		Amount
Purchases of treasury shares	—	$	—	(42	)	$	(6,171	)
Stock option exercises	350	19,298		324		14,851
Employee stock plan purchases	12	1,798		14		1,650

As of March 31, 2018, we had authorization from our board of directors to repurchase up to 2.0 million additional shares of Tyler common stock.