Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligations (Roll-Forward) (Details)

v2.4.0.6
Asset Retirement Obligations (Roll-Forward) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Jun. 30, 2012
Asset Retirement Obligation Disclosure [Abstract]        
Asset Retirement Obligation, Liabilities Incurred $ 3 $ 0 $ 3  
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]        
Balance at beginning of period     7,784  
Accretion expense     223  
Revision to estimate     (306)  
Effect of exchange rate changes     89  
Balance at end of period 7,793   7,793  
Less current asset retirement obligation 339   339 329
Long term asset retirement obligation $ 7,454   $ 7,454 $ 7,455