Income Taxes (Tables)

3 Months Ended

Mar. 31, 2015

Income Taxes [Abstract]

Income Tax Benefit and Effective Tax Rate

	Three Months Ended March 31,
	2015			2014
Current tax expense (benefit)	$	4,745		$	(7,145	)
Deferred tax expense (benefit)		3,306			(4,418	)
Income tax expense (benefit)	$	8,051		$	(11,563	)
Effective tax rate		(0.1	%)		0.1	%