Income Taxes

The following table compares our income tax benefit and effective tax rates for the three and six months ended September 30, 2014 and 2013:



	Three months ended						Six months ended
	September 30,						September 30,
(Dollars in thousands)	2014			2013			2014			2013
Income tax expense (benefit)	$	81		$	100		$	(714	)	$	(230	)
Effective tax rate	(7.7		)%	(8.3		)%	17.5		%	30.6		%

For the three and six months ended September 30, 2014, the effective tax rate was different than the statutory rate due primarily to the decrease in unrecognized tax benefits attributable to the expiration of statute of limitations, recognition of net operating losses as deferred tax assets, which were offset by increases in the valuation allowance, and other U.S. permanent book to tax differences.

For the three and six months ended September 30, 2013, the effective tax rate was different than the statutory rate due primarily to the intra-period tax allocation rules associated with the discontinued operations. Other items affecting the rate include a decrease in unrecognized tax benefits attributable to the expiration of statute of limitations, recognition of net operating losses as deferred tax assets, which were offset by increases in the valuation allowance, and other U.S. permanent book to tax differences.

We have recorded a valuation allowance offsetting substantially all of our deferred tax assets. The ultimate realization of deferred tax assets depends on the generation of future taxable income during the periods in which those temporary differences are deductible. Because of our losses in prior periods, management believes that it is more-likely-than-not that we will not realize the benefits of these deductible differences.