Shareholders' Equity

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Shareholders' Equity

7. 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, 2016	$	206	$	1,515,828		$	5,695,376		$	(5,906,969	)	$	(17,375	)	$	17,375		$	1,304,441
Cumulative-effect adjustment from adoption of ASU 2016-09, net of tax		—		1,566			(957	)		—			—			—			609
Net income		—		—			250,800			—			—			—			250,800
Deferred compensation activity		—		—			—			—			4			(4	)		—
Purchase of common stock for treasury		—		—			—			(159,506	)		—			—			(159,506	)
Equity-based compensation		—		21,467			—			—			—			—			21,467
Proceeds from stock options exercised		—		117,966			—			—			—			—			117,966
Treasury stock issued upon option exercise and restricted share vesting		—		(48,869	)		—			48,869			—			—			—
Balance, June 30, 2017	$	206	$	1,607,958		$	5,945,219		$	(6,017,606	)	$	(17,371	)	$	17,371		$	1,535,777

The Company repurchased 84 shares of its common stock during the six months ended June 30, 2017. The Company settles stock option exercises and vesting of restricted share units by issuing shares of treasury stock.  Approximately 138 shares were issued from the treasury account during the six months ended June 30, 2017 in settlement of stock 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.