Annual report pursuant to Section 13 and 15(d)

Net Operating Loss and Tax Credit Carryovers (Detail)

v2.4.0.8
Net Operating Loss and Tax Credit Carryovers (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Internal Revenue Service (IRS)
  
Operating Loss Carryforwards [Line Items]  
Net operating loss $ 263,388
Net operating loss, expiration year 2033
State and Local Jurisdiction
  
Operating Loss Carryforwards [Line Items]  
Net operating loss 95,912
State and Local Jurisdiction | Minimum
  
Operating Loss Carryforwards [Line Items]  
Net operating loss, expiration year 2017
State and Local Jurisdiction | Maximum
  
Operating Loss Carryforwards [Line Items]  
Net operating loss, expiration year 2028
Minimum Tax Credits
  
Operating Loss Carryforwards [Line Items]  
Tax credit carryforward 12,091
Tax credit carryforward, expiration year description Indefinite
General Business Tax Credit Carryforward
  
Operating Loss Carryforwards [Line Items]  
Tax credit carryforward $ 406
General Business Tax Credit Carryforward | Minimum
  
Operating Loss Carryforwards [Line Items]  
Tax credit carryforward, expiration year 2027
General Business Tax Credit Carryforward | Maximum
  
Operating Loss Carryforwards [Line Items]  
Tax credit carryforward, expiration year 2028