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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)
 9 Months Ended
Oct. 01, 2017
Equity [Abstract]  
Schedule of Comprehensive Loss
Changes in the balance of each component of accumulated other comprehensive loss during the reporting periods were as follows:
 
Thirteen weeks ended
 
October 1, 2017
September 23, 2016
(in thousands)
Balance at beginning of period
Current period other comprehensive income
Balance at end of period
 
Balance at beginning of period
Current period other comprehensive income
Balance at end of period
Foreign currency translation adjustment
$
(9,344
)
$
1,143

$
(8,201
)
 
$
(11,420
)
$
1,247

$
(10,173
)
Unrealized gain (loss) on investments (1)
897

424

1,321

 
(337
)
784

447

Total other comprehensive income (loss), net of tax
$
(8,447
)
$
1,567

$
(6,880
)
 
$
(11,757
)
$
2,031

$
(9,726
)
 
Thirty-nine weeks ended
 
October 1, 2017
September 23, 2016
(in thousands)
Balance at beginning of period
Current period other comprehensive income
Balance at end of period
 
Balance at beginning of period
Current period other comprehensive income
Balance at end of period
Foreign currency translation adjustment
$
(11,684
)
$
3,483

$
(8,201
)
 
$
(13,514
)
$
3,341

$
(10,173
)
Unrealized gain (loss) on investments (1)
251

1,070

1,321

 
(499
)
946

447

Total other comprehensive income (loss), net of tax
$
(11,433
)
$
4,553

$
(6,880
)
 
$
(14,013
)
$
4,287

$
(9,726
)


(1)
Consists of deferred compensation plan accounts, which are comprised of mutual funds classified as available-for-sale securities. The tax impact on unrealized gain (loss) on available-for-sale securities was de minimis for the thirteen and thirty-nine weeks ended October 1, 2017 and September 23, 2016, respectively.