Fair Values of Financial Instruments and Investments (Tables)

3 Months Ended

Jun. 30, 2014

Fair Values of Financial Instruments and Investments [Abstract]

Fair Value Hierarchy for Assets and Liabilities Measured at Fair Value on Recurring Basis

	Estimated Fair Value Measurements
	Carrying Value			Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
June 30, 2014:
Financial Assets:
Money market funds and certificate of deposit	$	111,908		$	111,908	$	-		$	-
Financial Liabilities:
Forward currency contracts	$	(40	)	$	-	$	(40	)	$	-
March 31, 2014:
Financial Assets:
Money market funds and certificate of deposit	$	118,795		$	118,795	$	-		$	-
June 30, 2013:
Financial Assets:
Money market funds	$	145,009		$	145,009	$	-		$	-
Financial Liabilities:
Forward currency contracts	$	(19	)	$	-	$	(19	)	$	-