Shareholders' Equity

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Shareholders' Equity

SHAREHOLDERS’ EQUITY

The following table details activity in our common stock:

	Years Ended December 31,
	2016					2015					2014
	Shares		Amount			Shares		Amount			Shares		Amount
Stock option exercises	827		$	23,527		1,118		$	23,160		855		$	14,680
Purchases of common stock	(882	)	(112,699		)	(5	)	(645		)	(294	)	(22,817		)
Employee stock plan purchases	47		6,236			43		4,671			53		4,144
Shares issued for acquisitions	—		—			2,149		364,333			17		1,473

Subsequent to December 31, 2016 and through February 21, 2017, we repurchased 42,000 shares for an aggregate purchase price of $6.2 million. As of February 21, 2017, we had authorization from our board of directors to repurchase up to 2.0 million additional shares of our common stock.