Restructuring Charges - Additional Information (Details) (USD $)	9 Months Ended	12 Months Ended							1 Months Ended	8 Months Ended	1 Months Ended			16 Months Ended	12 Months Ended				16 Months Ended	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2014 Workforce Reduction	Mar. 31, 2013 Workforce Reduction	Mar. 31, 2014 Asset Impairment	Mar. 31, 2013 Asset Impairment	Aug. 31, 2013 August 2013 Restructuring Program employee	Mar. 31, 2014 August 2013 Restructuring Program	Aug. 31, 2013 August 2013 Restructuring Program Workforce Reduction	Aug. 31, 2013 August 2013 Restructuring Program Other Expense	Dec. 31, 2012 December 2012 Restructuring Program employee	Mar. 31, 2014 December 2012 Restructuring Program Workforce Reduction	Mar. 31, 2014 December 2012 Restructuring Program Workforce Reduction Minimum	Mar. 31, 2014 December 2012 Restructuring Program Workforce Reduction Maximum	Mar. 31, 2014 December 2012 Restructuring Program Other Expense Minimum	Mar. 31, 2014 December 2012 Restructuring Program Other Expense Maximum	Mar. 31, 2014 December 2012 Restructuring Program Asset Impairment	Mar. 31, 2012 April 2011 Restructuring Program Positions	Mar. 31, 2012 April 2011 Restructuring Program Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated or relocated under restructuring program									20				70							25
Effect on future earnings											$ 3,000,000	$ 500,000			$ 8,000,000	$ 9,000,000	$ 4,000,000	$ 5,000,000
Restructuring expense incurred and expected to be incurred														1,800,000					4,700,000
Restructuring charges	$ 6,200,000	$ 1,134,000	$ 6,435,000	$ 875,000	$ 862,000	$ 1,716,000	$ 272,000	$ 4,719,000		$ 1,000,000											$ 900,000