Fair Value Measurements (Details 1) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Foreign exchange forwards [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets
Commodity Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets
Fair Value, Inputs, Level 1 [Member] | Foreign exchange forwards [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0
Fair Value, Inputs, Level 1 [Member] | Commodity Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0
Fair Value, Inputs, Level 2 [Member] | Foreign exchange forwards [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	25
Fair Value, Inputs, Level 2 [Member] | Commodity Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	141
Fair Value, Inputs, Level 3 [Member] | Foreign exchange forwards [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0
Fair Value, Inputs, Level 3 [Member] | Commodity Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Foreign exchange forwards [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	25
Estimate of Fair Value, Fair Value Disclosure [Member] | Commodity Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	$ 141