Commitments and Contingencies (Tables)

6 Months Ended

Sep. 30, 2017

Commitments And Contingencies Disclosure [Abstract]

Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis

Fair value measurements

The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis, by level, within the fair value hierarchy:

	September 30, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Pension plan assets (1)	$	—	$	9,643	$	—	$	9,643
Short-term investments (2)		10,686		—		—		10,686
Foreign currency forward contracts (3)		—		221		—		221
Total assets measured at fair value	$	10,686	$	9,864	$	—	$	20,550

	September 30, 2017
	Level 1		Level 2		Level 3		Total
Liabilities:
Foreign currency forward contracts (3)	$	—	$	—	$	—	$	—
Total liabilities measured at fair value	$	—	$	—	$	—	$	—

	March 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Pension plan assets (1)	$	—	$	7,981	$	—	$	7,981
Short-term investments (2)		16,057		—		—		16,057
Total assets measured at fair value	$	16,057	$	7,981	$	—	$	24,038

	March 31, 2017
	Level 1		Level 2		Level 3		Total
Liabilities:
Foreign currency forward contracts (3)	$	—	$	252	$	—	$	252
Total liabilities measured at fair value	$	—	$	252	$	—	$	252

(1) The fair value of pension plan assets has been determined as the surrender value of the portfolio of active insured employees held within the Swiss Life collective investment fund. See Note 9, “Defined Benefit Pension Plans”.

(2) The fair value of short-term investments has been determined based on the quoted value of the units held in the money market fund at the balance sheet date.  See Note 2, “Summary of Significant Accounting Policies – Short-term Investments”.

(3) The fair value of foreign currency forward contracts has been determined by calculating the present value of future cash flows, estimated using market-based observable inputs including forward and spot exchange rates and interest rate curves obtained from third party market price quotations.