Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

A combined summary of activity in our active stock-based compensation plans is presented in the following table.



				Non-Vested Stock Awards/Stock Units Outstanding			Stock Options Outstanding
	Shares Available for Grant		Director Deferred Stock Units Outstanding	Number of Shares	Weighted- Average Grant-Date Fair Value		Number of Shares		Weighted- Average Exercise Price
Balance, January 1, 2015	1,973,427		38,867	175,490	$	60.55	5,029,882		$	58.99
Authorized	515,000		—	—	—		—		—
Granted	(6,576	)	6,576	—	—		—		—
Stock options exercised	—		—	—	—		(227,851	)	51.92
Stock awards vested	—		—	—	—		—		—
Forfeited	20,482		—	—	—		(20,482	)	66.54
Canceled	(11,309	)	—	—	—		—		—
Expired	—		—	—	—		(774	)	71.39
Balance, September 30, 2015	2,491,024		45,443	175,490	$	60.55	4,780,775		$	59.29

Shares issued in connection with stock compensation awards along with other related information were as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
New shares issued from available authorized shares	—		—		—		—
Issued from available treasury stock	56,377		106,900		227,851		491,675
Total	56,377		106,900		227,851		491,675

Proceeds from stock option exercises	$	2,880	$	5,464	$	11,830	$	25,573

Stock-based compensation expense was as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Stock options	$	2,075	$	1,877	$	6,269	$	5,401
Non-vested stock awards/stock units	267		365		930		1,097
Deferred stock units	—		—		480		440
Total	$	2,342	$	2,242	$	7,679	$	6,938

Unrecognized stock-based compensation expense at September 30, 2015 was as follows:



Stock options	$	15,521
Non-vested stock awards/stock units	1,507
Total	$	17,028