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Schedule II - Valuation and Qualifying Accoutns
 12 Months Ended
Dec. 31, 2017
Valuation and Qualifying Accounts Disclosure [Line Items]  
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] BIO-RAD LABORATORIES, INC.
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
Years Ended December 31, 2017, 2016, and 2015
(in thousands)


Allowance for doubtful accounts receivable
 
 
Balance at
Beginning
of Year
 
Additions
Charged to Costs
and Expenses
 
Deductions
 
Balance at
End of Year
2017
 
$
23,367

 
$
11,174

 
$
(8,992
)
 
$
25,549

2016
 
$
24,418

 
$
3,785

 
$
(4,836
)
 
$
23,367

2015
 
$
27,973

 
$
8,783

 
$
(12,338
)
 
$
24,418



Valuation allowance for long-term deferred tax assets
 
 
Balance at
Beginning
of Year
 
Additions Charged
(Credited) to Income
Tax Expense
 
Deductions
 
Balance at 
End of Year 
2017
 
$
66,403

 
$
(47
)
 
$
—

 
$
66,356

2016
 
$
58,277

 
$
8,126

 
$
—

 
$
66,403

2015
 
$
58,615

 
$
(338
)
 
$
—

 
$
58,277