Note 2. Basic and Diluted Per Share Level 1 (Notes)

6 Months Ended

Jun. 30, 2011

Basic and Diluted Per Share Data [Abstract]

Basic and Diluted Per Share Data [Text Block]

Basic and Diluted Per Share Data —

Basic net income per common share is based on the weighted average number of shares of common stock outstanding for the period less restricted stock shares issued in connection with the Company's long-term incentive plans and subject to risk of forfeiture. Diluted net income per common share assumes that outstanding common shares were increased by shares issuable upon (i) vesting of restricted stock shares, and (ii) granting of shares under the long-term incentive plans. Restricted stock and shares under the long-term incentive plans have an exercise price of zero.

The reconciliation of basic net income per common share to diluted net income per common share is shown in the following table for the three and six-month periods ended June 30, 2011 and 2010:

	June 30, 2011						June 30, 2010
	Net Income		Shares	EPS			Net Income		Shares	EPS
Three Months
Basic net income	$	74,875	48,399,816	$	1.55		$	34,555	48,387,593	$	0.71
Effect of dilutive securities:
Restricted stock	—		11,283	—			—		188	—
Performance units	—		69,261	(0.01		)	—		85,121	—
Diluted net income	$	74,875	48,480,360	$	1.54		$	34,555	48,472,902	$	0.71
Six Months
Basic net income	$	145,429	48,398,196	$	3.00		$	55,280	48,370,764	$	1.14
Effect of dilutive securities:
Restricted stock	—		10,233	—			—		6,917	—
Performance units	—		70,881	—			—		85,121	—
Diluted net income	$	145,429	48,479,310	$	3.00		$	55,280	48,462,802	$	1.14