XML 55 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Allowance for Doubtful Accounts, Sales Returns and Discounts (Tables)
 12 Months Ended
Dec. 31, 2017
Allowance For Doubtful Accounts Sales Returns And Discounts [Abstract]  
Schedule Of Allowance For Doubtful Accounts, Sales Returns And Discounts [Table Text Block]
The activity in the allowance for doubtful accounts, sales returns and discounts for the years ended December 31, 2015, 2016 and 2017 is as follows:
 
Allowance for doubtful accounts
 
Period
 
Balance at 
beginning 
of year
 
Charges to
earnings
 
Amounts 
utilized
 
Balance at
end
of year
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year 2015
 
$
727
 
 
310
 
 
(262)
 
 
775
 
Year 2016
 
$
775
 
 
620
 
 
-
 
 
1,395
 
Year 2017
 
$
1,395
 
 
155
 
 
(1,550)
 
 
-
 
 
Allowance for sales returns and discounts
 
Period
 
Balance at 
beginning 
of year
 
Charges to
earnings
 
Amounts
utilized
 
Balance at
end
of year
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year 2015
 
$
868
 
 
8,887
 
 
(8,982)
 
 
773
 
Year 2016
 
$
773
 
 
10,624
 
 
(9,861)
 
 
1,536
 
Year 2017
 
$
1,536
 
 
8,720
 
 
(9,053)
 
 
1,203