Income Taxes (Tables)

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

Income tax expense (benefit)

The Company's income tax expense (benefit) consisted of the following:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2013		2012			2013		2012
Income (loss) before provision for income taxes	$	23,528	$	5,128		$	21,512	$	(6,054	)
Income tax expense (benefit) using estimated annual effective income tax rate	9,575		1,904			8,755		(2,247		)
Changes in effective tax rates	321		98			—		—
Out-of-period adjustment related to non-deductible expenses in 2011	—		—			—		757
Impact of discrete items, net	121		(769		)	927		(769		)
Income tax expense (benefit)	$	10,017	$	1,233		$	9,682	$	(2,259	)