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Fair Value Measurements (Details) (USD $)
Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Cash collateral $ 200,000
Fair Value, Measurements, Recurring [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure, Recurring 279,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure, Recurring 0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure, Recurring 279,000
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure, Recurring 0
Interest rate derivatives [Member] | Fair Value, Measurements, Recurring [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 159,000
Interest rate derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 0
Interest rate derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 159,000
Interest rate derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 0
Commodity derivatives [Member] | Fair Value, Measurements, Recurring [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 120,000
Commodity derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 0
Commodity derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset 120,000
Commodity derivatives [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative Asset $ 0