Accrued Liabilities (Restructuring and Other Charges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2013	Mar. 31, 2013	Sep. 30, 2012
Accrued restructuring charges, beginning balance	$ 1,904	$ 1,978
Payments	(83)	(118)
Non-cash adjustments	(442)	(481)
Foreign currency exchange rates	(1)	(1)
Accrued restructuring charges, ending balance	1,378	1,378
Non-current accrued restructuring charges	748	748	877
Business Acquisitions [Member]
Accrued restructuring charges, beginning balance	1,809	1,848
Payments	(66)	(66)
Non-cash adjustments	(452)	(491)
Foreign currency exchange rates	0	0
Accrued restructuring charges, ending balance	1,291	1,291
Non-Acquisition [Member]
Accrued restructuring charges, beginning balance	95	130
Payments	(17)	(52)
Non-cash adjustments	10	10
Foreign currency exchange rates	(1)	(1)
Accrued restructuring charges, ending balance	$ 87	$ 87

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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- Definition

Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost.

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