Annual report pursuant to Section 13 and 15(d)

Income Taxes (Summary of tax net operating loss carryforwards) (Details)

v2.4.0.6
Income Taxes (Summary of tax net operating loss carryforwards) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
2020
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2020
2021
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2021
2022
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2022
2023
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2023
2024
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2024
2025
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2025
2026
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2026
2027
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2027
2028
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2028
2029
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2029
2031
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards, Expiration Dates 2031
State
  
Operating Loss Carryforwards [Line Items]  
Total tax net operating loss carryforwards 286,095
State | 2020
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 42,768
State | 2021
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 28,987
State | 2022
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 13,788
State | 2023
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 3,903
State | 2024
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 0
State | 2025
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 0
State | 2026
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 0
State | 2027
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 0
State | 2028
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 39,715
State | 2029
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 47,558
State | 2031
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 109,376
Federal Taxing Authority [Member]
  
Operating Loss Carryforwards [Line Items]  
Total tax net operating loss carryforwards 293,327
Federal Taxing Authority [Member] | 2020
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 43,863
Federal Taxing Authority [Member] | 2021
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 29,614
Federal Taxing Authority [Member] | 2022
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 14,081
Federal Taxing Authority [Member] | 2023
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 3,968
Federal Taxing Authority [Member] | 2024
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 722
Federal Taxing Authority [Member] | 2025
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 737
Federal Taxing Authority [Member] | 2026
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 150
Federal Taxing Authority [Member] | 2027
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 1,010
Federal Taxing Authority [Member] | 2028
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 39,879
Federal Taxing Authority [Member] | 2029
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 48,370
Federal Taxing Authority [Member] | 2031
  
Operating Loss Carryforwards [Line Items]  
Operating Loss Carryforwards 110,933