XML 24 R28.htm IDEA: XBRL DOCUMENT v2.4.1.9
Inventories - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Inventory Disclosure [Abstract]    
Inventories market valuation allowance $ 2.7us-gaap_InventoryValuationReserves $ 2.2us-gaap_InventoryValuationReserves