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Other Accrued Expenses and Other Current Liabilities
12 Months Ended
Dec. 31, 2015
Payables and Accruals [Abstract]  
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Note 11.
Other Accrued Expenses and Other Current Liabilities
 
 
 
December 31,
 
 
 
2014
 
2015
 
 
 
(in thousands)
 
 
 
 
 
 
 
Accrued mask, mold fees and other expenses for RD
 
$
8,911
 
 
9,217
 
Payable for purchases of equipment
 
 
2,359
 
 
2,950
 
Accrued software maintenance
 
 
1,930
 
 
1,750
 
Accrued payroll and related expenses
 
 
6,455
 
 
7,780
 
Accrued professional service fee
 
 
970
 
 
1,066
 
Sales received in advance
 
 
368
 
 
3,655
 
Accrued warranty costs
 
 
103
 
 
227
 
Accrued insurance, welfare expenses, etc.
 
 
5,896
 
 
9,385
 
 
 
$
26,992
 
 
36,030
 
 
The movement in accrued warranty costs for the years ended December 31, 2013, 2014 and 2015 is as follows:
 
 
 
Balance at
 
Additions
 
 
 
Balance at
 
 
 
beginning
 
charged to
 
Amounts
 
end of
 
Period
 
of year
 
expense
 
utilized
 
year
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
 
Year 2013
 
$
197
 
 
364
 
 
(440)
 
 
121
 
Year 2014
 
$
121
 
 
355
 
 
(373)
 
 
103
 
Year 2015
 
$
103
 
 
1,121
 
 
(997)
 
 
227