XML 102 R88.htm IDEA: XBRL DOCUMENT v3.3.1.900
FAIR VALUE MEASUREMENTS (Fair Value and Carrying Value of Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Gross $ 1,268,937 $ 742,349
Long-term debt, Fair value 1,297,991 749,409
Less - Current maturities 0 0
Less - Current maturities, Fair value 0 0
Unamortized Debt Issuance Expense 32,217 30,128
Long-term debt 1,236,720 712,221
Long-term debt, Fair value 1,297,991 749,409
Senior secured notes [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Gross [1]   668,520
Long-term debt, Fair value 706,246 675,580 [1]
Long-term debt 669,644 668,520
2023 Senior Secured Notes [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Gross [2]   0
Long-term debt, Fair value 492,452 0
Long-term debt 500,000  
Rail Facility [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Line of Credit 0 0
Lines of Credit, Fair Value Disclosure 0 0
Catalyst lease [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Gross [3]   36,559
Long-term debt, Fair value 31,802 36,559 [3]
Long-term debt 31,802  
Revolving Credit Facility [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 0  
Rail Facility [Member] | Line of Credit [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Line of Credit 67,491 37,270
Lines of Credit, Fair Value Disclosure 67,491 37,270
Catalyst lease [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Obligations, Fair Value Disclosure 31,802 36,559
Catalyst lease [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Obligations, Fair Value Disclosure $ 31,802 $ 36,559
[1] The estimated fair value, categorized as a Level 2 measurement, was calculated based on the present value of future expected payments utilizing implied current market interest rates based on quoted prices of the Senior Secured Notes.
[2] The estimated fair value approximates carrying value, categorized as a Level 2 measurement, as these borrowings bear interest based upon short-term floating market interest rates.
[3] Catalyst leases are valued using a market approach based upon commodity prices for similar instruments quoted in active markets and are categorized as a Level 2 measurement. The Company has elected the fair value option for accounting for its catalyst lease repurchase obligations as the Company's liability is directly impacted by the change in fair value of the underlying catalyst.