Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Fair Value) (Details)

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Fair Value Measurements (Fair Value) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Credit Facility $ 68,000 $ 22,000
13% Senior Notes, principal 116,481 70,481
Derivative Assets    
Derivative Assets, Current   60
Derivative Assets   60
Liabilities    
Derivative Liabilities, Current (2,645) (1,036)
Derivative Liabilities (2,686) (1,108)
Fair Value, Net Asset (Liability)   (1,048)
Carrying Value [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Credit facility 68,000 22,000
13% Senior Notes due 2016 53,315 [1] 53,748 [1]
Total 121,315 75,748
Fair Value [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Credit facility 68,000 22,000
13% Senior Notes due 2016 50,420 [1] 50,299 [1]
Total 118,420 72,299
Level 2 [Member]
    
Derivative Assets    
Derivative Assets   60
Liabilities    
Derivative Liabilities (2,686) (1,108)
Fair Value, Net Asset (Liability)   (1,048)
13% Senior Notes due 2016 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
13% Senior Notes, principal 48,481 48,481
Deferred credit 4,834 5,267
Current assets - Fair market value of derivatives [Member]
    
Derivative Assets    
Derivative Assets, Current   60
Liabilities    
Derivative Liabilities, Current 2,645  
Current assets - Fair market value of derivatives [Member] | Level 2 [Member]
    
Derivative Assets    
Derivative Assets, Current   60
Liabilities    
Derivative Liabilities, Current 2,645  
Current liabilities - Fair market value of derivatives [Member]
    
Liabilities    
Derivative Liabilities, Current   (1,036)
Current liabilities - Fair market value of derivatives [Member] | Level 2 [Member]
    
Liabilities    
Derivative Liabilities, Current   (1,036)
Other long-term liabilities [Member]
    
Liabilities    
Derivative Liabilities, Noncurrent 41 (72)
Other long-term liabilities [Member] | Level 2 [Member]
    
Liabilities    
Derivative Liabilities, Noncurrent $ 41 $ (72)
[1] Fair value is calculated only in relation to the $48,481 and $48,481 principal outstanding of the Senior Notes at the dates indicated above, respectively. The remaining $4,834 and $5,267, 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.