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Accumulated Other Comprehensive Income
 6 Months Ended
Apr. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income ACCUMULATED OTHER COMPREHENSIVE INCOME

The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”), net of tax, for the six months ended April 30, 2019:
 
Unrealized
 
Unrealized Loss
on
 
Unrealized Loss on
 
Cumulative
 
 
 
Loss on Available-for-sale Securities
 
Foreign Currency Forward Contracts
 
Forward Starting Interest Rate Swaps
 
Foreign Currency
Translation Adjustment
 
Total
Balance at October 31, 2018
$
(425
)
 
$
(3,060
)
 
$
6,417

 
$
(8,712
)
 
$
(5,780
)
Other comprehensive income (loss) before reclassifications
413

 
(1,613
)
 
(10,013
)
 
(3,846
)
 
(15,059
)
Amounts reclassified from AOCI
—

 
2,317

 
(684
)
 
—

 
1,633

Balance at April 30, 2019
$
(12
)
 
$
(2,356
)
 
$
(4,280
)
 
$
(12,558
)
 
$
(19,206
)

The following table summarizes the changes in AOCI, net of tax, for the six months ended April 30, 2018:

 
Unrealized
 
Unrealized Loss
on
 
Unrealized Gain on
 
Cumulative
 
 
 
Loss on Available-for-sale Securities
 
Foreign Currency Forward Contracts
 
Forward Starting Interest Rate Swaps
 
Foreign Currency
Translation Adjustment
 
Total
Balance at October 31, 2017
$
(451
)
 
$
(1,386
)
 
$
218

 
$
(9,398
)
 
$
(11,017
)
Other comprehensive income (loss) before reclassifications
(337
)
 
(440
)
 
4,725

 
1,069

 
5,017

Amounts reclassified from AOCI
—

 
405

 
523

 
—

 
928

Balance at April 30, 2018
$
(788
)
 
$
(1,421
)
 
$
5,466

 
$
(8,329
)
 
$
(5,072
)


All amounts reclassified from AOCI related to settlement (gains) losses on foreign currency forward contracts designated as cash flow hedges impacted revenue and research and development expense on the Condensed Consolidated Statements of Operations. All amounts reclassified from AOCI related to settlement (gains) losses on forward starting interest rate swaps designated as cash flow hedges impacted interest and other income (loss), net on the Condensed Consolidated Statements of Operations.