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Employee Benefit Plans (Tables)
12 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Summary of share-based compensation expense and related tax benefit recognized
The following table summarizes share-based compensation expense and total income tax benefit recognized for fiscal years 2020, 2019 and 2018 (in thousands):
 
 
Years Ended March 31,
 
 
2020
 
2019
 
2018
Cost of goods sold
 
$
4,852

 
$
3,812

 
$
3,733

Marketing and selling
 
26,835

 
20,630

 
17,765

Research and development
 
9,273

 
7,368

 
6,381

General and administrative
 
13,910

 
18,455

 
16,259

Total share-based compensation expense
 
54,870

 
50,265

 
44,138

Income tax benefit
 
(14,109
)
 
(17,091
)
 
(15,998
)
Total share-based compensation expense, net of income tax benefit
 
$
40,761

 
$
33,174

 
$
28,140


Summary of unamortized share-based compensation expense and the remaining months over which such expense is expected to be recognized
The following table summarizes total unamortized share-based compensation expense and the remaining period over which such expense is expected to be recognized, on a weighted-average basis by type of grant (in thousands, except number of months):
 
 
March 31, 2020
 
 
Unamortized
Expense
 
Remaining
Months
ESPP
 
$
1,442

 
4
Stock Options
 
4,369

 
24
Time-based RSUs
 
71,545

 
26
Market-based and performance-based RSUs
 
13,180

 
21
Total unamortized share-based compensation expense

 
$
90,536

 
 

Schedule of assumptions applied for the fair value of market-based RSUs using the Monte-Carlo simulation method
The grant date fair value of the awards using the Black-Scholes-Merton option-pricing valuation model and Monte-Carlo simulation method is determined with the following assumptions and values:
 
 
Stock Options
 
 Employee Stock Purchase Plans
 
 
Years Ended March 31,
 
Years Ended March 31,
 
 
2020
 
2019
 
2018
 
2020
 
2019
 
2018
Dividend yield
 
*
 
1.72
%
 
*
 
1.74
%
 
1.73
%
 
1.67
%
Risk-free interest rate
 
*
 
2.45
%
 
*
 
1.81
%
 
2.35
%
 
1.37
%
Expected volatility
 
*
 
33
%
 
*
 
24
%
 
31
%
 
27
%
Expected life (years)
 
*
 
6.2

 
*
 
0.5

 
0.5

 
0.5

Weighted average grant date fair value per share
 
*
 
$11.55
 
*
 
$
9.35

 
$
9.33

 
$
8.69

* Not applicable as no stock options were granted in the period.
RSUs with Market Conditions
 
Years Ended March 31,
 
 
2020
 
2019
 
2018
Dividend yield
 
1.76
%
 
1.59
%
 
1.75
%
Risk-free interest rate
 
2.11
%
 
2.51
%
 
1.40
%
Expected volatility
 
30
%
 
30
%
 
31
%
Expected life (years)
 
3.0

 
3.0

 
3.0


Summary of stock option activity
A summary of the Company's stock option activities under all stock plans for fiscal years 2020, 2019 and 2018 is as follows:
 
 
Number of Shares
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Contractual Term

 
Aggregate Intrinsic Value
 
 
(In thousands)
 
 
 
(Years)
 
(In thousands)
Outstanding, March 31, 2017
 
3,050

 


 
 
 
 
Granted
 

 


 
 
 
 
Exercised
 
(994
)
 


 
 
 
$
8,347

Canceled or expired
 
(16
)
 


 
 
 
 
Outstanding, March 31, 2018
 
2,040

 


 
 
 
 
Granted
 
649

 


 
 
 
 
Exercised
 
(82
)
 


 
 
 
$
1,707

Canceled or expired
 

 


 
 
 
 
Outstanding, March 31, 2019
 
2,607

 
$
20

 

 


Granted
 

 


 

 


Exercised
 
(573
)
 
$
9

 

 
$
19,339

Canceled or expired
 
(65
)
 
$
39

 

 


Outstanding, March 31, 2020
 
1,969

 
$
22

 
4.2
 
$
40,549

Vested and exercisable, March 31, 2020
 
1,530

 
$
18

 
2.8
 
$
38,733


Summary of time- and performance-based RSU activity
A summary of the Company's time-based, market-based and performance-based RSU activities for fiscal years 2020, 2019 and 2018 is as follows:
 
 
Number of Shares
 
Weighted-Average Grant Date Fair Value
 
Weighted-Average Remaining Vesting Period
 
Aggregate
Fair Value
 
 
(In thousands)
 
 
 
(Years)
 
(In thousands)
Outstanding, March 31, 2017
 
6,181

 
$
14

 
 
 
 
Granted—time-based
 
1,212

 
$
33

 
 
 
 
Granted—market and performance-based
 
409

 
$
33

 
 
 
 
Vested
 
(2,248
)
 


 
 
 
$
81,582

Canceled or expired
 
(333
)
 


 
 
 
 
Outstanding, March 31, 2018
 
5,221

 
$
20

 
 
 
 
Granted—time-based
 
1,290

 
$
40

 
 
 
 
Granted—market and performance-based
 
381

 
$
39

 
 
 
 
Vested
 
(2,148
)
 


 
 
 
$
89,159

Canceled or expired
 
(323
)
 


 
 
 
 
Outstanding, March 31, 2019
 
4,421

 
$
29

 

 
 
Granted—time-based
 
1,431

 
$
38

 
 
 
 
Granted—market and performance-based
 
365

 
$
40

 
 
 
 
Vested
 
(1,705
)
 
$
22

 
 
 
$
76,389

Canceled or expired
 
(561
)
 
$
32

 
 
 
 
Outstanding, March 31, 2020
 
3,951

 
$
36

 
1.3
 
$
167,298

Schedule of net periodic benefit costs
The net periodic benefit cost of the defined benefit pension plans and the non-retirement post-employment benefit obligations for fiscal years 2020, 2019 and 2018 was as follows (in thousands):
 
 
Years Ended March 31,
 
 
2020
 
2019
 
2018
Service costs
 
$
11,008

 
$
10,564

 
$
9,715

Interest costs
 
1,055

 
1,301

 
1,126

Expected return on plan assets
 
(2,616
)
 
(2,167
)
 
(1,792
)
Amortization:
 
 
 
 
 
 
Net prior service credit recognized
 
(435
)
 
(443
)
 
(51
)
Net actuarial loss recognized
 
1,386

 
450

 
242

Settlement
 
(97
)
 
(97
)
 

Total net periodic benefit cost

 
$
10,301

 
$
9,608

 
$
9,240


Schedule of changes in projected benefit obligations
The changes in projected benefit obligations for fiscal years 2020 and 2019 were as follows (in thousands):
 
 
Years Ended March 31,
 
 
2020
 
2019
Projected benefit obligations, beginning of the year
 
$
143,662

 
$
128,915

Service costs
 
11,008

 
10,564

Interest costs
 
1,055

 
1,301

Plan participant contributions
 
3,733

 
3,666

Actuarial gains
 
2,246

 
9,506

Benefits paid
 
(3,507
)
 
(3,793
)
Plan amendment related to statutory change
 

 
(705
)
Settlement
 
(941
)
 
(335
)
Administrative expense paid
 
(141
)
 
(142
)
Currency exchange rate changes and other
 
3,799

 
(5,315
)
Projected benefit obligations, end of the year
 
$
160,914

 
$
143,662


Schedule of changes in the fair value of defined benefit pension plan assets
The following table presents the changes in the fair value of defined benefit pension plan assets for fiscal years 2020 and 2019 (in thousands):
 
 
Years Ended March 31,
 
 
2020
 
2019
Fair value of plan assets, beginning of the year
 
$
90,365

 
$
84,718

Actual return on plan assets
 
(830
)
 
3,350

Employer contributions
 
6,531

 
6,383

Plan participant contributions
 
3,733

 
3,666

Benefits paid
 
(3,507
)
 
(3,793
)
Settlement
 
(941
)
 
(335
)
Administrative expenses paid
 
(141
)
 
(142
)
Currency exchange rate changes
 
2,800

 
(3,482
)
Fair value of plan assets, end of the year
 
$
98,010

 
$
90,365


Schedule of fair value of the defined benefit pension plan assets by major categories and by levels within the fair value hierarchy
The following tables present the fair value of the defined benefit pension plan assets by major categories and by levels within the fair value hierarchy as of March 31, 2020 and 2019 (in thousands):
 
 
March 31,
 
 
2020
 
2019
 
 
Level 1
 
Level 2
 
Total
 
Level 1
 
Level 2
 
Total
Cash and cash equivalents
 
$
14,213

 
$

 
$
14,213

 
$
10,737

 
$

 
$
10,737

Equity securities
 
28,329

 

 
28,329

 
27,559

 

 
27,559

Debt securities
 
26,605

 

 
26,605

 
26,823

 

 
26,823

Swiss real estate funds
 
16,476

 
8,168

 
24,644

 
21,659

 

 
21,659

Hedge funds
 

 
1,882

 
1,882

 

 
912

 
912

Other
 
2,084

 
253

 
2,337

 
2,377

 
298

 
2,675

  Total fair value of plan assets
 
$
87,707

 
$
10,303

 
$
98,010

 
$
89,155

 
$
1,210

 
$
90,365


Schedule of net funded status
The funded status of the plans was as follows (in thousands):
 
 
Years Ended March 31,
 
 
2020
 
2019
Fair value of plan assets
 
$
98,010

 
$
90,365

Less: projected benefit obligations
 
160,914

 
143,662

Underfunded status 
 
$
(62,904
)
 
$
(53,297
)

Schedule of amounts recognized on the balance sheet for the plans
Amounts recognized on the balance sheet for the plans were as follows (in thousands):
 
 
March 31,
 
 
2020
 
2019
Current liabilities
 
$
2,126

 
$
1,849

Non-current liabilities
 
60,778

 
51,448

  Total liabilities
 
$
62,904

 
$
53,297


Schedule of amounts recognized in other comprehensive income (loss)
Amounts recognized in accumulated other comprehensive loss related to defined benefit pension plans were as follows (in thousands):
 
 
March 31,
 
 
2020
 
2019
 
2018
Net prior service credits
 
$
3,647

 
$
3,965

 
$
3,843

Net actuarial loss
 
(22,722
)
 
(17,630
)
 
(9,821
)
  Accumulated other comprehensive loss
 
(19,075
)
 
(13,665
)
 
(5,978
)
Deferred tax
 
(941
)
 
(267
)
 
(420
)
  Accumulated other comprehensive loss, net of tax
 
$
(20,016
)
 
$
(13,932
)
 
$
(6,398
)

Schedule of amounts in accumulated other comprehensive income (loss) to be recognized over next fiscal year
The following table presents the amounts included in accumulated other comprehensive loss as of March 31, 2020, which are expected to be recognized as a component of net periodic benefit cost in fiscal year 2021 (in thousands):
 
 
Year Ended
March 31, 2020
Amortization of net prior service credits
 
$
(447
)
Amortization of net actuarial loss
 
1,124

Total
 
$
677


Schedule of actuarial assumptions for the pension plans
The actuarial assumptions for the defined benefit plans for fiscal years 2020 and 2019 were as follows:
 
 
Years Ended March 31,
 
 
2020
 
2019
Benefit Obligations:
 
 
 
 
Discount rate
 
0.50% - 6.75%
 
0.55%-7.25%
Estimated rate of compensation increase
 
2.25% - 10.00%
 
2.50%-10.00%
Periodic Costs:
 
 
 
 
Discount rate
 
0.55% - 7.25%
 
0.75%-7.50%
Estimated rate of compensation increase
 
2.50% - 10.00%
 
2.50%-10.00%
Expected average rate of return on plan assets
 
0.89% - 3.00%
 
0.75% - 2.75%

Schedule of expected benefit payments
The following table reflects the benefit payments that the Company expects the plans to pay in the periods noted (in thousands):
Years Ending March 31,
 
 
2021
 
$
8,128

2022
 
8,501

2023
 
8,192

2024
 
8,541

2025
 
8,877

2026-2030
 
43,063

Total expected benefit payments by the plan
 
$
85,302