XML 32 R79.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Tax Expense - NOL and Tax Credit Carryforwards (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Federal [Member]
    
NOL and Tax Credit Carryforwards [Line Items]    
NOL Carryforward $ 244,100,000 [1] $ 162,000,000 [1]
Tax Credit Carryforwards 16,000,000 8,400,000
NOL and Tax Credit Carryforwards, Valuation Allowance 0  
State [Member]
    
NOL and Tax Credit Carryforwards [Line Items]    
NOL Carryforward 90,600,000 [1],[2] 73,100,000 [1],[2]
Tax Credit Carryforwards 10,300,000 [3] 3,800,000 [3]
NOL Carryforwards, Valuation Allowance 400,000  
Tax Credit Carryforwards, Valuation Allowance $ 2,000,000  
[1] Pretax amounts
[2] Net of $0.4 million valuation allowance.
[3] Net of $2.0 million valuation allowance.