Note 4 - Inventories (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014
LIFO Inventory Amount	$ 16.3us-gaap_LIFOInventoryAmount		$ 14.1us-gaap_LIFOInventoryAmount
Inventory Difference Using FIFO Basis	27.5scx_InventoryDifferenceUsingFifoBasis		27.3scx_InventoryDifferenceUsingFifoBasis
Cost of Sales [Member]
Inventory, LIFO Reserve, Effect on Income, Net	$ 0.2	$ 1.4

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766

Name:	us-gaap_LIFOInventoryAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant