Derivative Instruments (Fair Value of Derivative Instruments) (Details) (USD $)	Jun. 30, 2012
Derivative [Line Items]
Total Derivatives in Cash Flow Hedging Relationships	$ 42,400
Current Assets [Member]
Derivative [Line Items]
Derivatives in Cash Flow Hedging Relationships, Asset	6,800
Long Term Assets [Member]
Derivative [Line Items]
Derivatives in Cash Flow Hedging Relationships, Asset	35,600
Current Liabilities [Member]
Derivative [Line Items]
Derivatives in Cash Flow Hedging Relationships, Liability
Long Term Liabilities [Member]
Derivative [Line Items]
Derivatives in Cash Flow Hedging Relationships, Liability