Fair Value Measurements Level 4 (Details) (USD $) In Thousands, unless otherwise specified																			9 Months Ended		3 Months Ended		9 Months Ended
	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2013 Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2013 Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2013 Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2013 Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2013 Carrying (Reported) Amount, Fair Value Disclosure [Member]		Mar. 31, 2013 Carrying (Reported) Amount, Fair Value Disclosure [Member]		Dec. 31, 2013 Capital Additions [Member]	Dec. 31, 2013 Foreign Currency Gain (Loss) [Member]	Dec. 31, 2013 Cost of Sales [Member]	Dec. 31, 2012 Cost of Sales [Member]	Dec. 31, 2013 Cost of Sales [Member]	Dec. 31, 2012 Cost of Sales [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gain (Loss) on Sale of Commodity Contracts																					$ 0	$ (169)	$ (57)	$ (211)
Cash and Cash Equivalents, Fair Value Disclosure			147,175	[1]	135,277	[1]	10,162	[1]	6,731	[1]	0	[1]	0	[1]	157,337	[1]	142,008	[1]
Foreign Currency Contract, Asset, Fair Value Disclosure			0	[2]	0	[2]	0	[2]	161	[2]	0	[2]	0		0	[2]	161	[2]
Foreign Currency Contracts, Liability, Fair Value Disclosure			0	[2]	0	[2]	388	[2]	128	[2]	0	[2]	0		388	[2]	128	[2]
Investments, Fair Value Disclosure			3,399	[3]	3,139	[3]	0	[3]	0		0	[3]	0		3,399	[3]	3,139	[3]
Deferred Compensation Plan Assets, Fair Value			3,488	[3]	3,218	[3]	0	[3]	0		0	[3]	0		3,488	[3]	3,218	[3]
Long-term Debt, Fair Value			0	[4]	0	[4]	488,828	[4]	531,856	[4]	0	[4]	0	[4]	474,740	[4]	492,290	[4]
Business Acquisition, Contingent Consideration, at Fair Value	5,226	5,453	0	[5]	0		0	[5]	0		5,226	[5]	5,453	[5]	5,226	[5]	5,453	[5]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability																			$ 87	$ (314)

[1] Money market fund holdings are classified as level two as active market quoted prices are not available.

[2] The fair values of forward and swap contracts are based on period-end forward rates and reflect the value of the amount that we would pay or receive for the contracts involving the same notional amounts and maturity dates.

[3] We maintain a frozen domestic non-qualified deferred compensation plan covering certain employees, which allows for the deferral of payment of previously earned compensation for an employee-specified term or until retirement or termination. Amounts deferred can be allocated to various hypothetical investment options (compensation deferrals have been frozen under the plan). We hold investments to satisfy the future obligations of the plan. Changes in the value of the investment accounts are recognized each period based on the fair value of the underlying investments. Employees who made deferrals are entitled to receive distributions of their hypothetical account balances (amounts deferred, together with earnings (losses)).

[4] We estimate the fair value of our long-term debt using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements.

[5] Contingent consideration obligations arise from prior business acquisitions. The fair values are based on discounted cash flow analyses reflecting the possible achievement of specified performance measures or events and captures the contractual nature of the contingencies, commercial risk, and the time value of money. Contingent consideration obligations are classified in the consolidated balance sheets as accrued expense (short-term) and other liabilities (long-term), as appropriate based on the contractual payment dates.