Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets	$ 212	$ 1,855
Total assets at fair value	212	1,855
Derivatives Liabilities	822	193
Total liabilities at fair value	822	193
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets	212	1,855
Total assets at fair value	212	1,855
Derivatives Liabilities	822	193
Total liabilities at fair value	$ 822	$ 193