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Other Accrued Expenses and Other Current Liabilities
 12 Months Ended
Dec. 31, 2014
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,
 
 
 
2013
 
2014
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Accrued mask, mold fees and other expenses for RD
 
$
8,981
 
 
8,911
 
Payable for purchases of equipment
 
 
2,897
 
 
2,359
 
Accrued software maintenance
 
 
1,439
 
 
1,930
 
Accrued payroll and related expenses
 
 
5,799
 
 
6,455
 
Accrued professional service fee
 
 
1,388
 
 
970
 
Warrant obligation
 
 
1,255
 
 
-
 
Accrued warranty costs
 
 
121
 
 
103
 
Accrued insurance, welfare expenses, etc.
 
 
8,186
 
 
6,264
 
 
 
$
30,066
 
 
26,992
 
 
The movement in accrued warranty costs for the years ended December 31, 2012, 2013 and 2014 is as follows:
 
Period
 
Balance at
beginning
of year
 
Additions
charged to
expense
 
Amounts
utilized
 
Balance at
end of
year
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year 2012
 
$
78
 
 
856
 
 
(737)
 
 
197
 
Year 2013
 
$
197
 
 
364
 
 
(440)
 
 
121
 
Year 2014
 
$
121
 
 
355
 
 
(373)
 
 
103