Income Taxes (Narrative) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued [Abstract]
Effective tax rate	(87.50%)	0.40%	(22.20%)	(12.60%)