Debt (Senior Secured Credit Facility) (Details) (USD $) In Millions, unless otherwise specified		3 Months Ended				3 Months Ended			6 Months Ended	3 Months Ended				6 Months Ended		3 Months Ended										3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Senior Secured Credit Facility [Member]	Mar. 31, 2013 Swingline Loan [Member]	Mar. 31, 2013 Letter Of Credit [Member]	Mar. 31, 2013 Senior Secured Notes [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Maximum [Member] Senior Secured Notes [Member]	Jun. 24, 2012 Minimum [Member]	Mar. 31, 2013 Minimum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Minimum [Member] Senior Secured Notes [Member]	Mar. 25, 2012 Debt Covenant Compliance February 2012 [Member]	Mar. 31, 2013 Debt Covenant Compliance July 2012 [Member]	Jun. 24, 2012 Debt Covenant Compliance July 2012 [Member]	Mar. 31, 2013 Debt Covenant Compliance July 2012 [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Debt Covenant Compliance July 2012 [Member] Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Debt Covenant Compliance July 2012, Base Rate [Member] Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Debt Covenant Compliance July 2012, LIBOR Rate [Member] Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Base Rate [Member] Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Base Rate [Member] Minimum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 L I B O R [Member] Maximum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 L I B O R [Member] Minimum [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Option 1 [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 Option 2 [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 $69 Million Variable Interest Rate Revolving Credit Facility Maturing In 2014 [Member] Senior Secured Credit Facility [Member]	Mar. 31, 2013 $22 Million 4.00% Fixed Interest Rate Series A Senior Secured Notes Maturing In 2015 [Member] Senior Secured Notes [Member]	Mar. 31, 2013 $22 Million 4.38% Fixed Interest Rate Series B Senior Secured Notes Maturing In 2016 [Member] Senior Secured Notes [Member]	Mar. 31, 2013 $22 Million 4.75% Fixed Interest Rate Series C Senior Secured Notes Maturing In 2017 [Member] Senior Secured Notes [Member]
Debt Instrument [Line Items]
Leverage ratio						2.75		2.75				2.75
Adjusted Leverage Ratio Q1 2012												3.00
Adjusted Leverage Ratio Q2 2012												3.35		5.25
Adjusted Leverage Ratio Q3 2012												3.25		6.50
Adjusted leverage ratio Q4 2012														5.50
Adjusted leverage ratio Q1 2013														3.50
Adjusted leverage ratio Q2 2013														2.75
Original Total Commitment		$ 125.0
Amended total commitment															75.0
Original letters of credit sublimit		25.0
Letters of credit sublimit		5.0
Original swingline loans sublimit			25.0
Swingline loans sublimit			5.0
Cash restructuring excluded from EBITDA calculation													25.0
Fixed charge covenant Q4 2012														1.00
Fixed charge coverage ratio									1.25		1.25
Cash Balance Threshold for Repayment	65
Debt Instrument, Basis Spread on Variable Rate															0.50%		4.25%	5.25%	2.50%	1.25%	3.50%	2.25%	0.50%	1.00%
Debt Instrument, Description of Variable Rate Basis													a daily rate equal to the one-month LIBOR rate, plus 1.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage							0.75%			0.30%						1.00%
Repayments of Debt, Maturing in More than Three Months		6.1
Line of Credit Facility, Borrowing Capacity, Description	75.0												68.9
Expansion option under credit facility		50.0
Potential total commitment with expansion option		118.9
Letters of credit outstanding				1.8
Percentage of stock pledge of domestic subsidiaries		100.00%			100.00%
Percentage of stock pledge of all first-tier foreign subsidiaries		65.00%			65.00%
Book value of collateral of bank facility		119			119
Face value																									$ 69.0	$ 22.0	$ 22.0	$ 22.0
Interest rate																										4.00%	4.38%	4.75%
Maturity date																										2015	2016	2017