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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Tables)
 12 Months Ended
Sep. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Company’s matching contributions to the Plan
The following table reflects the Company’s contributions to the Plan during fiscal 2018 and 2017:
 
 
Fiscal
(in thousands)
 
2018
 
2017
Cash
 
$
1,610

 
$
1,645
Accumulated other comprehensive income reflected on the Consolidated Balance Sheets
The following table reflects accumulated other comprehensive income / (loss) reflected on the Consolidated Balance Sheets as of September 29, 2018 and September 30, 2017: 
 
 
As of
(in thousands)
 
September 29, 2018
 
September 30, 2017
(Loss) / Gain from foreign currency translation adjustments
 
$
(1,211
)
 
$
2,422

Unrecognized actuarial loss on pension plan, net of tax
 
(1,620
)
 
(1,736
)
Unrealized (loss) / gain on hedging
 
(1,071
)
 
1,353

Accumulated other comprehensive (loss) / income
 
$
(3,902
)
 
$
2,039
Equity-based compensation expense
The following table reflects total equity-based compensation expense, which includes Relative TSR PSUs, Time-based RSUs, Special/Growth PSUs, Performance-based Restricted Stock and common stock, included in the Consolidated Statements of Operations for fiscal 2018, 2017, and 2016: 
 
 
Fiscal
(in thousands)
 
2018
 
2017
 
2016
Cost of sales
 
$
515

 
$
463

 
$
421

Selling, general and administrative (1)
 
8,548

 
9,015

 
3,244

Research and development
 
2,622

 
2,244

 
2,065

Total equity-based compensation expense
 
$
11,685

 
$
11,722

 
$
5,730

(1) The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.
The following table reflects equity-based compensation expense, by type of award, for fiscal 2018, 2017, and 2016:  
 
 
Fiscal
(in thousands)
 
2018
 
2017
 
2016
Relative TSR PSUs
 
$
3,583

 
$
3,480

 
$
(33
)
Time-based RSUs
 
7,027

 
7,492

 
5,255

Performance-based restricted stock 
 
—

 
—

 
(43
)
Special/Growth PSUs
 
295

 
—

 
—

Common stock
 
780

 
750

 
551

Total equity-based compensation expense (1)
 
$
11,685

 
$
11,722

 
$
5,730


(1) The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.
Employee market-based restricted stock activity
The following table reflects Relative TSR PSUs activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Unrecognized compensation expense (in thousands)
 
Average remaining service period (in years)
 
Weighted average grant date fair value per share
Relative TSR PSUs outstanding as of October 3, 2015
578

 
$
4,465

 
1.4
 
 
Granted
172

 
 
 
 
 
$
12.26

Forfeited or expired
(256
)
 
 
 
 
 
 
Vested
(10
)
 
 
 
 
 
 
Relative TSR PSUs outstanding as of October 1, 2016
484

 
$
2,924

 
1.0
 
 
Granted
388

 
 
 
 
 
$
13.47

Forfeited or expired
(3
)
 
 
 
 
 
 
Vested
(196
)
 
 
 
 
 
 
Relative TSR PSUs outstanding as of September 30, 2017
673

 
$
6,204

 
1.4
 
 
Granted
180

 
 
 
 
 
$
29.60

Forfeited or expired
(146
)
 
 
 
 
 
 
Vested
(168
)
 
 
 
 
 
 
Relative TSR PSUs outstanding as of September 29, 2018
539

 
$
4,629

 
1.1
 
 
Schedule of Assumptions Used to Calculate Compensation Expense
The following table reflects the assumptions used to calculate compensation expense related to the Company’s Relative TSR PSUs issued during fiscal 2018, 2017, and 2016:
 
Fiscal
 
2018
 
2017
 
2016
Grant Price
$
19.65

 
$
12.51

 
$
9.58

Expected dividend yield(1)
0.12%

 
N/A

 
N/A

Expected stock price volatility
31.71
%
 
30.39
%
 
30.85
%
Risk-free interest rate
1.68
%
 
0.96
%
 
0.89
%
Employee time-based restricted stock activity
The following table reflects Time-based RSUs activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Unrecognized compensation expense (in thousands)
 
Average remaining service period (in years)
 
Weighted average grant date fair value per share
Time-based RSUs outstanding as of October 3, 2015
849

 
$
7,054

 
1.6
 
 
Granted
597

 
 
 
 
 
$
9.66

Forfeited or expired
(85
)
 
 
 
 
 
 
Vested
(346
)
 
 
 
 
 
 
Time-based RSUs outstanding as of October 1, 2016
1,015

 
$
6,440

 
1.5
 
 
Granted
715

 
 
 
 
 
$
13.32

Forfeited or expired
(50
)
 
 
 
 
 
 
Vested
(600
)
 
 
 
 
 
 
Time-based RSUs outstanding as of September 30, 2017
1,080

 
$
7,770

 
1.5
 
 
Granted
459

 
 
 
 
 
$
22.32

Forfeited or expired
(87
)
 
 
 
 
 
 
Vested
(542
)
 
 
 
 
 
 
Time-based RSUs outstanding as of September 29, 2018
910

 
$
9,038

 
1.4
 
 
Schedule of Performance Based Restricted Stock Activity
The following table reflects Performance-based restricted stock activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Unrecognized compensation expense (in thousands)
 
Average remaining service period (in years)
Performance-based restricted stock outstanding as of October 3, 2015
57

 
$
285

 
2.2
Granted
—

 
 
 
 
Forfeited or expired
(29
)
 
 
 
 
Vested
(28
)
 
 
 
 
Performance-based restricted stock outstanding as of October 1, 2016
—

 
—

 
0
Schedule of Special/Growth Based Restricted Stock Activity
The following table reflects Special/Growth PSUs activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Unrecognized compensation expense (in thousands)
 
Average remaining service period (in years)
 
Weighted average grant date fair value per share
Special/Growth PSUs outstanding as of September 30, 2017
—

 
 
 
 
 
 
Granted
60

 
 
 
 
 
$
22.57

Forfeited or expired
(14
)
 
 
 
 
 
 
Vested
—

 
 
 
 
 
 
Special/Growth PSUs outstanding as of September 29, 2018
46

 
$
702

 
2.1
 
 
Employee stock option activity
The following table reflects employee stock option activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Weighted average exercise price
 
Average remaining contractual life (in years)
 
Aggregate intrinsic value (in thousands)
Options outstanding as of October 3, 2015
147

 
$
8.18

 
 
 
 
Exercised
(53
)
 
$
5.40

 
 
 
$
330

Forfeited or expired
(4
)
 
$
9.00

 
 
 
 
Options outstanding as of October 1, 2016
90

 
$
8.41

 
 
 
 
Exercised
(61
)
 
$
8.31

 
 
 
$
531

Forfeited or expired
(13
)
 
$
8.50

 
 
 
 
Options outstanding as of September 30, 2017
16

 
$
8.73

 
 
 
 
Exercised
(6
)
 
$
8.74

 
 
 
$
73

Forfeited or expired
(8
)
 
$
8.74

 
 
 
 
Options outstanding as of September 29, 2018
2

 
$
8.64

 
1.6
 
$
25

Options vested and expected to vest as of September 29, 2018
2

 
$
8.64

 
1.6
 
$
25

Options exercisable as of September 29, 2018
2

 
$
8.64

 
1.6
 
 
In the money exercisable options as of September 29, 2018
2

 
 
 
 
 
$
25
Outstanding and exercisable employee stock options
The following table reflects outstanding and exercisable employee stock options as of September 29, 2018:
 
 
Options Outstanding
 
Options Exercisable
Range of exercise prices
 
Options outstanding (in thousands)
 
Weighted average remaining contractual life (in years)
 
Weighted average exercise price
 
Options exercisable (in thousands)
 
Weighted average exercise price
8.64
 
2

 
1.6
 
$
8.64

 
2

 
$
8.64
Common stock issued to non-employee directors
The following table reflects shares of common stock issued to non-employee directors and the corresponding fair value for fiscal 2018, 2017, and 2016:
 
Fiscal
(in thousands)
2018
 
2017
 
2016
Number of common shares issued
33

 
45

 
50

Fair value based upon market price at time of issue
$
780

 
$
750

 
$
551
Non-employee director stock option activity
The following table reflects non-employee director stock option activity for fiscal 2018, 2017, and 2016:
 
Number of shares (in thousands)
 
Weighted average exercise price
 
Average remaining contractual life (in years)
 
Aggregate intrinsic value (in thousands)
Options outstanding as of October 3, 2015
20

 
$
11.20

 
 
 
$
225

Exercised
—

 
$
—

 
 
 
 
Forfeited or expired
(20
)
 
$
11.20

 
 
 
 
Options outstanding as of October 1, 2016
—

 
$
—

 
 
 
$
—


No non-employee director stock options were granted during fiscal 2018, 2017, and 2016.
Defined benefits pension obligations and pension expenses
The following table reflects the Company's defined benefits pension obligations, mainly in Switzerland and Taiwan, as of September 29, 2018 and September 30, 2017:
 
 
As of
(in thousands)
September 29, 2018
 
September 30, 2017
Switzerland pension obligation
$
1,980

 
$
1,951

Taiwan pension obligation
1,256

 
967