XML 14 R53.htm IDEA: XBRL DOCUMENT v2.4.0.8
Related Party Transactions (Details) (Marco International [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2013
Ferrosilicon [Member]
Sep. 30, 2012
Ferrosilicon [Member]
Jun. 30, 2013
Ferrosilicon [Member]
Sep. 30, 2013
Calcium Silicon Powder [Member]
Sep. 30, 2012
Calcium Silicon Powder [Member]
Jun. 30, 2013
Calcium Silicon Powder [Member]
Sep. 30, 2013
Rare Earth [Member]
Jun. 30, 2013
Rare Earth [Member]
Related Party Transaction [Line Items]                      
Purchases from related party $ 771 $ 14,347                  
Due to related party 263   0             189 0
Sales of products to related party       41 137   916 464   189 0
Due from related party       $ 41   $ 0 $ 611   $ 0