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Segment, Product and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2016
Schedule of Segment Reporting Information, by Segment [Table Text Block]
 
 
Year Ended December 31, 2014
 
 
 
 
 
Non-driver
 
Consolidated
 
 
 
Driver IC
 
products
 
Total
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Segment revenues
 
$
672,068
 
 
168,474
 
 
840,542
 
Segment operating income (loss)
 
$
92,290
 
 
(19,565)
 
 
72,725
 
Non operating income, net
 
 
 
 
 
 
 
 
12,769
 
Consolidated earnings before income taxes
 
 
 
 
 
 
 
$
85,494
 
Significant noncash items:
 
 
 
 
 
 
 
 
 
 
Share Based Compensation
 
$
1,341
 
 
588
 
 
1,929
 
Depreciation and amortization
 
$
3,449
 
 
11,143
 
 
14,592
 
  
 
 
Year Ended December 31, 2015
 
 
 
 
 
Non-driver
 
Consolidated
 
 
 
Driver IC
 
products
 
Total
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Segment revenues
 
$
560,399
 
 
131,390
 
 
691,789
 
Segment operating income (loss)
 
$
59,506
 
 
(28,834)
 
 
30,672
 
Non operating income, net
 
 
 
 
 
 
 
 
2,195
 
Consolidated earnings before income taxes
 
 
 
 
 
 
 
$
32,867
 
Significant noncash items:
 
 
 
 
 
 
 
 
 
 
Share Based Compensation
 
$
1,206
 
 
612
 
 
1,818
 
Depreciation and amortization
 
$
3,591
 
 
10,573
 
 
14,164
 
 
 
 
Year Ended December 31, 2016
 
 
 
 
 
Non-driver
 
Consolidated
 
 
 
Driver IC
 
products
 
Total
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Segment revenues
 
$
641,865
 
 
161,052
 
 
802,917
 
Segment operating income (loss)
 
$
92,010
 
 
(32,775)
 
 
59,235
 
Non operating income, net
 
 
 
 
 
 
 
 
183
 
Consolidated earnings before income taxes
 
 
 
 
 
 
 
$
59,418
 
Significant noncash items:
 
 
 
 
 
 
 
 
 
 
Share Based Compensation
 
$
542
 
 
644
 
 
1,186
 
Depreciation and amortization
 
$
3,685
 
 
10,071
 
 
13,756
 
Schedule Of Revenues By Major Product lines By Reporting Segments [Table Text Block]
Revenues from the Company’s major product lines are summarized as follow:
 
 
 
Year Ended December 31,
 
 
 
2014
 
2015
 
2016
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Display drivers for large-size applications
 
$
226,087
 
 
224,423
 
 
272,906
 
Display drivers for mobile handsets applications
 
 
238,467
 
 
170,705
 
 
191,845
 
Display drivers for consumer electronics applications
 
 
207,514
 
 
165,271
 
 
177,114
 
Others
 
 
168,474
 
 
131,390
 
 
161,052
 
 
 
$
840,542
 
 
691,789
 
 
802,917
 
Revenue from External Customers by Geographic Areas [Table Text Block]
The following tables summarize information pertaining to the Company’s revenues from customers in different geographic region (based on customer’s headquarter location):
 
 
 
Year Ended December 31,
 
 
 
2014
 
2015
 
2016
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
Taiwan
 
$
310,191
 
 
254,763
 
 
199,985
 
China
 
 
436,462
 
 
372,538
 
 
507,470
 
Other Asia Pacific (Korea and Japan)
 
 
88,047
 
 
53,053
 
 
54,159
 
Europe and America
 
 
5,842
 
 
11,435
 
 
41,303
 
 
 
$
840,542
 
 
691,789
 
 
802,917
 
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
The carrying values of the Company’s tangible long-lived assets are located in the following countries:
 
 
 
December 31,
 
 
 
2015
 
2016
 
 
 
(in thousands)
 
 
 
 
 
 
 
Taiwan
 
$
53,413
 
 
47,144
 
China
 
 
914
 
 
767
 
U.S.
 
 
63
 
 
61
 
Japan
 
 
32
 
 
21
 
Korea
 
 
39
 
 
179
 
 
 
$
54,461
 
 
48,172
 
Schedule Of Accounts Receivable From Significant Customers By Reporting Segments [Table Text Block]
Accounts receivable from significant customers, those representing 10% or more of total accounts receivable for the respective periods, is summarized as follows:
 
 
 
December 31,
 
 
 
2015
 
2016
 
 
 
(in thousands)
 
 
 
 
 
 
 
Customer A and its affiliates
 
$
40,488
 
 
55,681
 
Customer B and its affiliates
 
 
39,311
 
 
36,849
 
 
 
$
79,799
 
 
92,530
 
Sales Revenue, Net [Member]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Revenues from significant customers, those representing 10% or more of total revenue for the respective periods, are summarized as follows:
 
 
 
Year Ended December 31,
 
 
 
2014
 
2015
 
2016
 
 
 
(in thousands)
 
Driver IC segment:
 
 
 
 
 
 
 
 
 
 
Customer A and its affiliates
 
$
133,649
 
 
116,456
 
 
152,142
 
Customer B and its affiliates
 
 
145,015
 
 
126,953
 
 
113,300
 
 
 
$
278,664
 
 
243,409
 
 
265,442
 
Non-driver products segment:
 
 
 
 
 
 
 
 
 
 
Customer A and its affiliates
 
$
18,456
 
 
22,345
 
 
27,873
 
Customer B and its affiliates
 
 
19,537
 
 
19,256
 
 
8,672
 
 
 
$
37,993
 
 
41,601
 
 
36,545