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Schedule II - Valuation and qualifying accounts
 12 Months Ended
Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and qualifying accounts
(2) Financial Statement Schedule.

—     Schedule II - Valuation and qualifying accounts

Years Ended December 31, 2016, 2015 and 2014
(In thousands)
Description
 
Balance at
Beginning of Year
 
Additions Charged to
Costs and Expenses (a)
 
Deduction (b)
 
Additions due to Acquisitions (c)
 
Balance at
End of Year
 
 
 
 
 
 
 
 
 
 
 
ALLOWANCE FOR UNCOLLECTIBLE ACCOUNTS:
 
 

 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
2014
 
(840
)
 
(83
)
 
30

 
—

 
(893
)
2015
 
(893
)
 
(607
)
 
203

 
—

 
(1,297
)
2016
 
(1,297
)
 
(404
)
 
322

 
(208
)
 
(1,587
)

(a) We record a bad debt provision based upon historical experience and a review of individual customer balances.
(b) When an individual customer balance becomes impaired and is deemed uncollectible, a deduction is made against the allowance for uncollectible accounts.
(c) This amount includes additional allowance recorded as a result of acquisitions made during the years presented.


Years Ended December 31, 2016, 2015 and 2014
(In thousands)
Description
 
Balance at
Beginning of Year
 
Additions Charged to
Costs and Expenses (d)
 
Deduction
 
Balance at
End of Year
 
 
 
 
 
 
 
 
 
TAX VALUATION ALLOWANCE:
 
 

 
 

 
 

 
 

 
 
 
 
 
 
 
 
 
2014
 
(1,363
)
 
(240
)
 
—

 
(1,603
)
2015
 
(1,603
)
 
(378
)
 
—

 
(1,981
)
2016
 
(1,981
)
 
(1,805
)
 
—

 
(3,786
)

(d) We record a valuation allowance against a deferred tax asset when it is determined that it is more likely than not that the deferred tax asset will not be realized.