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Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Oct. 31, 2019
Statement of Comprehensive Income [Abstract]  
Accumulated Other Comprehensive Income
The following table summarizes the changes in accumulated balances of other comprehensive income (“AOCI”):
 
 
Unrealized Gain/(Loss) on Available-for-Sale Securities
 
Unrealized Gain/(Loss) on Foreign Currency Forward Contracts
 
Unrealized Gain/(Loss) on Forward Starting Interest Rate Swaps
 
Cumulative Foreign Currency Translation Adjustment
 
Total
Balance at October 31, 2016
 
$
139

 
$
(1,091
)
 
$
(5,967
)
 
$
(17,410
)
 
$
(24,329
)
Other comprehensive gain (loss) before reclassifications
 
(590
)
 
1,290

 
3,669

 
8,012

 
12,381

Amounts reclassified from AOCI
 
—

 
(1,585
)
 
2,516

 
—

 
931

Balance at October 31, 2017
 
(451
)
 
(1,386
)
 
218

 
(9,398
)
 
(11,017
)
Other comprehensive gain (loss) before reclassifications
 
26

 
(3,242
)
 
6,011

 
686

 
3,481

Amounts reclassified from AOCI
 
—

 
1,568

 
188

 
—

 
1,756

Balance at October 31, 2018
 
(425
)
 
(3,060
)
 
6,417

 
(8,712
)
 
(5,780
)
Other comprehensive gain (loss) before reclassifications
 
577

 
14

 
(18,948
)
 
(763
)
 
(19,120
)
Amounts reclassified from AOCI
 
—

 
3,971

 
(1,155
)
 
—

 
2,816

Balance at October 31, 2019
 
$
152

 
$
925

 
$
(13,686
)
 
$
(9,475
)
 
$
(22,084
)