Stock-Based Compensation (Tables)

6 Months Ended

Jun. 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	—		—	—	—		(171,474	)	52.20
Stock awards vested	—		—	—	—		—		—
Forfeited	18,482		—	—	—		(18,482	)	66.10
Canceled	(9,309	)	—	—	—		—		—
Expired	—		—	—	$	—	(774	)	$	71.39
Balance, June 30, 2015	2,491,024		45,443	175,490	$	60.55	4,839,152		$	59.20

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



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
New shares issued from available authorized shares	—		—		—		—
Issued from available treasury stock	157,124		54,950		171,474		384,775
Total	157,124		54,950		171,474		384,775

Proceeds from stock option exercises	$	8,222	$	2,830	$	8,950	$	20,109

Stock-based compensation expense was as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Stock options	$	2,028	$	1,754	$	4,194	$	3,524
Non-vested stock awards/stock units	267		366		663		732
Deferred stock units	480		440		480		440
Total	$	2,775	$	2,560	$	5,337	$	4,696

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



Stock options	$	17,629
Non-vested stock awards/stock units	1,774
Total	$	19,403