Credit Facilities, Short-term Borrowings (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended					3 Months Ended			9 Months Ended				9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2014 Foreign Lines of Credit And Overdraft Facilities [Member]	Dec. 31, 2013 Domestic Line Of Credit [Member]	Jun. 30, 2014 Revolving Credit Facility [Member]	Sep. 30, 2013 Revolving Credit Facility [Member]	Jun. 30, 2014 Revolving Credit Facility [Member] Minimum [Member]	Jun. 30, 2014 Revolving Credit Facility [Member] Maximum [Member]	Jun. 30, 2014 Revolving Credit Agreement [Member]	Jun. 30, 2014 Chinese Credit Facility [Member]	Jun. 30, 2014 Chinese Credit Facility, RMB Denominated Loan [Member]	Jun. 30, 2014	Jun. 30, 2014 The Notes [Member]	Jun. 30, 2014 Revolving Credit Agreement [Member]
Maximum borrowing capacity						$ 200,000						$ 22,700				$ 600,000
Option to increase maximum borrowings to this amount																800,000
Line of Credit Facility, Expiration Date						Dec. 20, 2013					Jul. 01, 2018
Line of Credit Facility, Initiation Date						Dec. 21, 2012
Variable Rate Basis						prime rate or an adjusted LIBOR					LIBOR		interest at the prevailing interest rate offered by the People's Bank of China on the date of borrowing, plus a margin equal to 25% of that prevailing rate	interest at the lender's cost of borrowing rate at the date of borrowing, plus 3%
Basis Spread On Variable Rate									0.85%	1.65%
Credit facility effective interest rate on outstanding borrowing							1.20%
Cross default provisions related to the Company’s other outstanding debt arrangements in excess of this amount, the occurrence of which would permit the lenders to accelerate the amounts due thereunder											60,000
Debt Covenant, Minimum Consolidated Net Worth Calculation, Base Value											800,000				800,000
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Income											50.00%				50.00%
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Proceeds of Issuance of Capital Stock											50.00%
Debt Covenant, Leverage Ratio, Maximum											3.5 to 1.0				3.5 to 1.0
Debt Covenant, Leverage Ratio During Material Acquisition Period, Maximum											4.0 to 1.0				4.0 to 1.0
Debt Covenant, Leverage Ratio Next Two Succeeding Fiscal Quarters Following Material Acquisition, Maximum											3.75 to 1.0
Repayment of long-term debt	300,000	41,875
Outstanding borrowings					0		165,000	0				0
Long-term debt, excluding current portion	665,000		450,000
Cash and Cash Equivalents, at Carrying Value	95,842	60,972	48,556	61,829
Cash and cash equivalents	$ 95,842	$ 60,972	$ 48,556	$ 61,829