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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
COGNEX CORPORATION – SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
 
 
 
 
Additions
 
 
 
 
 
 
Description
 
Balance at
Beginning
of Period
 
Charged to
Costs and
Expenses
 
Charged
to Other
Accounts
 
Deductions
 
Other
 
Balance at
End of
Period
 
 
(In thousands)
Reserve for Uncollectible Accounts Receivable:
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
$
873

 
$
724

 
$
—

 
$
(116
)
(a) 
$
87

(b) 
$
1,568

2016
 
$
736

 
$
216

 
$
—

 
$
(64
)
(a) 
$
(15
)
(b) 
$
873

2015
 
$
820

 
$
—

 
$
—

 
$
(44
)
(a) 
$
(40
)
(b) 
$
736

Reserve for Excess and Obsolete Inventory:
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
$
3,317

 
$
3,281

 
$
—

 
$
(1,980
)
(a) 
$
343

(c) 
$
4,961

2016
 
$
3,803

 
$
3,641

 
$
—

 
$
(4,075
)
(a) 
$
(52
)
(c) 
$
3,317

2015
 
$
5,058

 
$
1,562

 
$
—

 
$
(2,443
)
(a) 
$
(374
)
(c) 
$
3,803

Deferred Tax Valuation Allowance:
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
$
4,116

 
$
1,193

 
$
—

 
$
—

 
$
—

 
$
5,309

2016
 
$
3,259

 
$
857

 
$
—

 
$
—

 
$
—

 
$
4,116

2015
 
$
2,483

 
$
817

 
$
—

 
$
—

 
$
(41
)
 
$
3,259

(a)
Specific write-offs
(b)
Collections of previously written-off accounts and foreign currency exchange rate changes
(c)
Foreign currency exchange rate changes