<http://schema.org/description>
"Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pwc.com/us/en/tax-accounting-services/newsletters/tax-accounting/netting-utbs-against-carryforwards.html>