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Note 4 - Inventories (Details Textual) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Inventory Disclosure [Abstract]      
LIFO Inventory Amount $ 15.6us-gaap_LIFOInventoryAmount   $ 14.1us-gaap_LIFOInventoryAmount
Inventory Difference Using FIFO Basis 27.4scx_InventoryDifferenceUsingFifoBasis   27.3scx_InventoryDifferenceUsingFifoBasis
Cost of Sales [Member]      
Inventory Disclosure [Abstract]      
Inventory, LIFO Reserve, Effect on Income, Net $ 0.1us-gaap_InventoryLIFOReserveEffectOnIncomeNet
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember		 $ (0.4)us-gaap_InventoryLIFOReserveEffectOnIncomeNet
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember