Italian Customs and Tax Cases (Details)		12 Months Ended		10 Months Ended		73 Months Ended						36 Months Ended		36 Months Ended		72 Months Ended
	Mar. 31, 2013 1998-2000 Cases [Member]	Dec. 31, 2011 2004 - 2005 Cases [Member] USD ($)	Dec. 31, 2011 2004 - 2005 Cases [Member] EUR (€)	Dec. 31, 2012 2004 - 2005 Cases [Member] Indirect import challenge - income tax assessment [Member] EUR (€)	Mar. 31, 2013 2004 - 2005 Cases [Member] Indirect import challenge - income tax assessment [Member] EUR (€)	Sep. 30, 2017 2004 - 2005 Cases [Member] Indirect import challenge - customs tax assessment [Member] EUR (€)	Mar. 31, 2013 2004 - 2005 Cases [Member] Indirect import challenge - customs tax assessment [Member] EUR (€)	Mar. 31, 2013 2004 - 2005 Cases [Member] 2004 cases - direct import challenge [Member] USD ($)	Mar. 31, 2013 2004 - 2005 Cases [Member] 2004 cases - direct import challenge [Member] EUR (€)	Mar. 31, 2013 2004 - 2005 Cases [Member] 2005 cases - direct import challenge [Member] USD ($)	Mar. 31, 2013 2004 - 2005 Cases [Member] 2005 cases - direct import challenge [Member] EUR (€)	Mar. 31, 2012 Trento [Member] 1998-2000 Cases [Member] installment	Mar. 31, 2013 Trento [Member] 1998-2000 Cases [Member] EUR (€)	Mar. 31, 2012 Alessandria [Member] 1998-2000 Cases [Member] installment	Mar. 31, 2013 Alessandria [Member] 1998-2000 Cases [Member] EUR (€)	Jul. 31, 2018 Genoa [Member] 1998-2000 Cases [Member] EUR (€)	Mar. 31, 2013 Genoa [Member] 1998-2000 Cases [Member] EUR (€)
Loss Contingencies [Line Items]
Number of jurisdictions where civil customs proceedings were ultimately brought and are now pending	4
Claim amount								$ 17,000,000	€ 13,000,000	$ 25,000,000	€ 19,000,000		€ 3,300,000		€ 300,000		€ 7,400,000
Interest and penalties claimed													3,100,000		200,000		1,000,000
Total claim													6,400,000		500,000		8,400,000
Deposits made on amounts claimed that have become due and payable notwithstanding the pending appeals													6,400,000		500,000		900,000
Number of monthly installments in Trento case												36
Number of monthly installments in Alessandria case														36
Monthly deposit payment				113,000		350,000										118,000
Interest deducted from original claim																	6,000,000
Assessment amount					12,000,000		18,200,000
Interest and penalties assessed					19,100,000		10,200,000
Total assessment					31,100,000		28,400,000
Deposits made on amounts assessed that have become due and payable notwithstanding the pending appeals					1,500,000		8,700,000
Remaining 2005 income tax assessment after significant portion of assessment withdrawn					500,000
Tax settlement paid		4,000,000	3,000,000
Pricing adjustment paid for 2006 through 2009		$ 3,000,000	€ 2,000,000