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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Valuation And Qualifying Accounts
SCHEDULE II
WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION
VALUATION AND QUALIFYING ACCOUNTS
For each of the three years ended December 31 
In thousands
 
Balance at
beginning
of period
 
Charged/
(credited) to
expense
 
Charged/ (credited) to
other
accounts (1)
 
Deductions
from
reserves (2)
 
Balance
at end of
period
2018
 
 
 
 

 
 

 
 

 
 

Allowance for doubtful accounts
 
$
12,342

 
$
9,458

 
$
(360
)
 
$
4,513

 
$
16,927

Valuation allowance-taxes
 
25,683

 
27,410

 
—

 
11,314

 
41,779

2017
 
 

 
 

 
 

 
 

 
 

Allowance for doubtful accounts
 
$
7,340

 
$
2,632

 
$
4,979

 
$
2,609

 
$
12,342

Valuation allowance-taxes
 
21,418

 
4,265

 
—

 
—

 
25,683

2016
 
 

 
 

 
 

 
 

 
 

Allowance for doubtful accounts
 
$
5,614

 
$
3,635

 
$
—

 
$
1,909

 
$
7,340

Valuation allowance-taxes
 
12,623

 
3,405

 
5,390

 
—

 
21,418

 
(1)
Reserves of acquired/(sold) companies; valuation allowances for state and foreign deferred tax assets; impact of fluctuations in foreign currency exchange rates.
(2)
Actual disbursements and/or charges.