Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Fair Value of Financial Instruments) (Details)

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Fair Value Measurements (Fair Value of Financial Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
13% Senior Notes due 2016 unamortized deferred credit $ 12,092 $ 13,707
Senior notes principal outstanding 96,961 96,961
Senior Notes [Member] | 13% Senior Notes due 2016 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
13% Senior Notes due 2016 unamortized deferred credit 12,092 13,707
Senior notes principal outstanding 96,961 96,961
Carrying (Reported) Amount, Fair Value Disclosure [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 109,053 120,668
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Revolving Credit Facility [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit Facility 0 10,000
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Senior Notes [Member] | 13% Senior Notes due 2016 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
13% Senior Notes due 2016 109,053 110,668
Estimate of Fair Value, Fair Value Disclosure [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 101,615 110,112
Estimate of Fair Value, Fair Value Disclosure [Member] | Revolving Credit Facility [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit Facility 0 10,000
Estimate of Fair Value, Fair Value Disclosure [Member] | Senior Notes [Member] | 13% Senior Notes due 2016 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
13% Senior Notes due 2016 $ 101,615 [1] $ 100,112 [1]
[1] Fair value is calculated only in relation to the $96,961 principal outstanding of the Senior Notes at each of the dates indicated above, respectively. The remaining $12,092 and $13,707, respectively, which the Company has recorded as a deferred credit, is excluded from the fair value calculation, and will be recognized in earnings as a reduction of interest expense over the remaining amortization period. See Note 4 for additional information.