Acquisition of Chingis (Schedule of Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Sep. 14, 2012 Chingis	Sep. 14, 2012 In-process technology Chingis	Sep. 14, 2012 Developed technology Chingis	Sep. 14, 2012 Customer relationships Chingis	Sep. 14, 2012 Other intangibles Chingis
Business Acquisition [Line Items]
Cash and cash equivalents					$ 18,622
Accounts receivable					6,546
Inventories					5,229
Property, equipment and leasehold improvements					117
Other current and other assets					844
Intangible assets					39,238	400	3,690	3,340	450
Current liabilities and other liabilities					(7,946)
Deferred tax liability					(1,440)
Total liabilities assumed					(9,386)
Net identifiable assets acquired					29,852
Noncontrolling interest					(1,996)
Goodwill	9,178	9,178	9,463	1,301	3,976
Net assets acquired					$ 31,832