Income Taxes (Tables)

6 Months Ended

Jun. 30, 2011

Income Taxes

Income Tax Expense

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Current income tax expense	$	13,273		$	16,637		$	26,065		$	30,024
Deferred income tax expense (benefit)		384			(1,013	)		245			(1,406	)
Income tax expense as reported	$	13,657		$	15,624		$	26,310		$	28,618
Effective tax rate		19.7	%		22.8	%		19.6	%		22.1	%