Shareholders' Equity

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Shareholders' Equity

8. Shareholders’ Equity

A summary of changes in shareholders’ equity is presented below:

	Common Stock		Additional Paid-In- Capital			Retained Earnings		Treasury Stock			Deferred Compensation Trust			Deferred Compensation Liability			Total
Balance, December 31, 2012	$	206	$	1,169,699		$	4,339,080	$	(4,028,508	)	$	(25,331	)	$	25,331		$	1,480,477
Net income		—		—			35,041		—			—			—			35,041
Deferred compensation activity		—		—			—		—			7,467			(7,467	)		—
Equity-based compensation		—		8,063			—		—			—			—			8,063
Tax benefit from equity benefit plan activity		—		23,099			—		—			—			—			23,099
Proceeds from stock options exercised		—		5,412			—		—			—			—			5,412
Treasury stock issued upon option exercise and restricted share vesting		—		(21,312	)		—		21,312			—			—			—
Balance, March 31, 2013	$	206	$	1,184,961		$	4,374,121	$	(4,007,196	)	$	(17,864	)	$	17,864		$	1,552,092

The Company did not repurchase any shares of its common stock during the three months ended March 31, 2013. The Company settles option exercises and vesting of restricted share units by issuing shares of treasury stock to option holders. Approximately 83,000 shares were issued from the treasury account during the first quarter of 2013 for option exercises and vesting of restricted share units. Shares are relieved from the treasury account based on the weighted average cost basis of treasury shares acquired.