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Employee Benefit Plans (Tables)
12 Months Ended
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [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 2019, 2018 and 2017 (in thousands):
 
 
Years Ended March 31,
 
 
2019
 
2018
 
2017
Cost of goods sold
 
$
3,812

 
$
3,733

 
$
2,663

Marketing and selling
 
20,630

 
17,765

 
14,723

Research and development
 
7,368

 
6,381

 
4,200

General and administrative
 
18,455

 
16,259

 
14,304

Total share-based compensation expense
 
50,265

 
44,138

 
35,890

Income tax benefit
 
(17,091
)
 
(15,998
)
 
(8,536
)
Total share-based compensation expense, net of income tax benefit
 
$
33,174

 
$
28,140

 
$
27,354


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, 2019
 
 
Unamortized
Expense
 
Remaining
Months
ESPP
 
$
1,515

 
4
Stock Options
 
7,384

 
35
Time-based RSUs
 
65,798

 
33
Market-based and performance-based RSUs
 
16,277

 
20
Total unamortized share-based compensation expense

 
$
90,974

 
 

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,
 
 
2019
 
2018
 
2017
 
2019
 
2018
 
2017
Dividend yield
 
1.72
%
 
*
 
*
 
1.73
%
 
1.67
%
 
2.50
%
Risk-free interest rate
 
2.45
%
 
*
 
*
 
2.35
%
 
1.37
%
 
0.51
%
Expected volatility
 
33
%
 
*
 
*
 
31
%
 
27
%
 
35
%
Expected life (years)
 
6.2

 
*
 
*
 
0.5

 
0.5

 
0.5

Weighted average grant date fair value per share
 
$
11.55

 
*
 
*
 
$
9.33

 
$
8.69

 
$
5.73

* Not applicable as no stock options were granted in the period.
RSUs with Market Conditions
 
Years Ended March 31,
 
 
2019
 
2018
 
2017
Dividend yield
 
1.59
%
 
1.75
%
 
3.29
%
Risk-free interest rate
 
2.51
%
 
1.40
%
 
0.86
%
Expected volatility
 
30
%
 
31
%
 
34
%
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 2019, 2018 and 2017 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, 2016
 
5,334

 


 
 
 
 
Granted
 

 


 
 
 
 
Exercised
 
(1,784
)
 


 
 
 
$
14,627

Canceled or expired
 
(500
)
 


 
 
 
 
Outstanding, March 31, 2017
 
3,050

 


 
 
 
 
Granted
 

 


 
 
 
 
Exercised
 
(994
)
 


 
 
 
$
8,347

Canceled or expired
 
(16
)
 


 
 
 
 
Outstanding, March 31, 2018
 
2,040

 
$
14

 

 


Granted
 
649

 
$
39

 

 


Exercised
 
(82
)
 
$
21

 

 
$
1,707

Canceled or expired
 

 


 

 


Outstanding, March 31, 2019
 
2,607

 
$
20

 
4.8
 
$
51,005

Vested and exercisable, March 31, 2019
 
1,958

 
$
13

 
3.1
 
$
50,593


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 2019, 2018 and 2017 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, 2016
 
5,521

 


 
 
 
 
Granted—time-based
 
2,390

 
$
16

 
 
 
 
Granted—market-based
 
160

 
$
15

 
 
 
 
Granted - performance-based
 
604

 
$
15

 
 
 
 
Vested
 
(2,126
)
 


 
 
 
$
48,644

Canceled or expired
 
(368
)
 


 
 
 
 
Outstanding, March 31, 2017
 
6,181

 
$
14

 
 
 
 
Granted—time-based
 
1,212

 
$
33

 
 
 
 
Granted - 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
)
 
$
17

 
 
 
$
89,159

Canceled or expired
 
(323
)
 
$
26

 
 
 
 
Outstanding, March 31, 2019
 
4,421

 
$
29

 
1.2
 
$
173,970

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 2019, 2018 and 2017 was as follows (in thousands):
 
 
Years Ended March 31,
 
 
2019
 
2018
 
2017
Service costs
 
$
10,564

 
$
9,715

 
$
10,385

Interest costs
 
1,301

 
1,126

 
800

Expected return on plan assets
 
(2,167
)
 
(1,792
)
 
(1,724
)
Amortization:
 
 
 
 
 
 
    Net transition obligation
 

 

 
4

Net prior service credit recognized
 
(443
)
 
(51
)
 
(117
)
Net actuarial loss recognized
 
450

 
242

 
1,032

Settlement
 
(97
)
 

 

Total net periodic benefit cost

 
$
9,608

 
$
9,240

 
$
10,380


Schedule of changes in projected benefit obligations
The changes in projected benefit obligations for fiscal years 2019 and 2018 were as follows (in thousands):
 
 
Years Ended March 31,
 
 
2019
 
2018
Projected benefit obligations, beginning of the year
 
$
128,915

 
$
114,640

Service costs
 
10,564

 
9,715

Interest costs
 
1,301

 
1,126

Plan participant contributions
 
3,666

 
3,522

Actuarial gains (losses)
 
9,506

 
(1,580
)
Benefits paid
 
(3,793
)
 
(1,202
)
Plan amendment related to statutory change
 
(705
)
 
(2,519
)
Settlement and curtailment
 
(335
)
 

Administrative expense paid
 
(142
)
 
(144
)
Currency exchange rate changes and other
 
(5,315
)
 
5,357

Projected benefit obligations, end of the year
 
$
143,662

 
$
128,915


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 2019 and 2018 (in thousands):
 
 
Years Ended March 31,
 
 
2019
 
2018
Fair value of plan assets, beginning of the year
 
$
84,718

 
$
71,376

Actual return on plan assets
 
3,350

 
1,824

Employer contributions
 
6,383

 
5,995

Plan participant contributions
 
3,666

 
3,522

Benefits paid
 
(3,793
)
 
(1,202
)
Settlement and curtailment
 
(335
)
 

Administrative expenses paid
 
(142
)
 
(144
)
Currency exchange rate changes
 
(3,482
)
 
3,347

Fair value of plan assets, end of the year
 
$
90,365

 
$
84,718


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, 2019 and 2018 (in thousands):
 
 
March 31,
 
 
2019
 
2018
 
 
Level 1
 
Level 2
 
Total
 
Level 1
 
Level 2
 
Total
Cash and cash equivalents
 
$
10,737

 
$

 
$
10,737

 
$
18,331

 
$
24

 
$
18,355

Equity securities
 
27,559

 

 
27,559

 
26,204

 

 
26,204

Debt securities
 
26,823

 

 
26,823

 
25,150

 

 
25,150

Swiss real estate funds
 
21,659

 

 
21,659

 
12,096

 

 
12,096

Hedge funds
 

 
912

 
912

 

 

 

Other
 
2,377

 
298

 
2,675

 
2,623

 
290

 
2,913

Total fair value of plan assets

 
$
89,155

 
$
1,210

 
$
90,365

 
$
84,404

 
$
314

 
$
84,718


Schedule of net funded status
The funded status of the plans was as follows (in thousands):
 
 
Years Ended March 31,
 
 
2019
 
2018
Fair value of plan assets
 
$
90,365

 
$
84,718

Less: projected benefit obligations
 
143,662

 
128,915

Underfunded status 
 
$
(53,297
)
 
$
(44,197
)

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,
 
 
2019
 
2018
Current liabilities
 
$
1,849

 
$
1,763

Non-current liabilities
 
51,448

 
42,434

Total liabilities
 
$
53,297

 
$
44,197


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,
 
 
2019
 
2018
 
2017
Net prior service credits
 
$
3,965

 
$
3,843

 
$
1,274

Net actuarial loss
 
(17,630
)
 
(9,821
)
 
(11,407
)
Accumulated other comprehensive loss
 
(13,665
)
 
(5,978
)
 
(10,133
)
Deferred tax
 
(267
)
 
(420
)
 
(347
)
Accumulated other comprehensive loss, net of tax
 
$
(13,932
)
 
$
(6,398
)
 
$
(10,480
)

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, 2019, which are expected to be recognized as a component of net periodic benefit cost in fiscal year 2020 (in thousands):
 
 
Year Ending
March 31, 2020
Amortization of net prior service credits
 
$
(432
)
Amortization of net actuarial loss
 
645

 
 
$
213


Schedule of actuarial assumptions for the pension plans
The Company reassesses its benefit plan assumptions on a regular basis. The actuarial assumptions for the defined benefit plans for fiscal years 2019 and 2018 were as follows:
 
 
Years Ended March 31,
 
 
2019
 
2018
Benefit Obligations:
 
 
 
 
Discount rate
 
 0.55% - 7.25%
 
0.85%-7.50%
Estimated rate of compensation increase
 
 2.50% - 10.00%
 
2.25%-10.00%
Periodic Costs:
 
 
 
 
Discount rate
 
 0.75% - 7.50%
 
0.75%-7.00%
Estimated rate of compensation increase
 
 2.50% - 10.00%
 
2.50%-10.00%
Expected average rate of return on plan assets
 
 0.75% - 2.75%
 
1.00%-2.50%

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,
 
 
2020
 
$
7,956

2021
 
7,225

2022
 
7,553

2023
 
7,294

2024
 
7,607

2025-2029
 
39,367

 
 
$
77,002