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Basis of Presentation - Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Percentage of weighted average cost inventory 70.00%us-gaap_PercentageOfWeightedAverageCostInventory  
Inventory, Net [Abstract]    
Purchased parts and raw materials $ 8,148us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves $ 8,797us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves
Work-in-process 4,988us-gaap_InventoryWorkInProcessNetOfReserves 4,809us-gaap_InventoryWorkInProcessNetOfReserves
Finished goods 5,781us-gaap_InventoryFinishedGoodsNetOfReserves 3,154us-gaap_InventoryFinishedGoodsNetOfReserves
Inventory $ 18,917us-gaap_InventoryNet $ 16,760us-gaap_InventoryNet