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Note 5 - Balance Sheet Components
12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Supplemental Balance Sheet Disclosures [Text Block]
5.
BALANCE SHEET COMPONENTS
 
Inventories
 
Inventories consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Raw materials
  $
14,599
    $
14,907
 
Work in process
   
26,048
     
21,177
 
Finished goods
   
30,822
     
27,125
 
Total
  $
71,469
    $
63,209
 
 
Other Current Assets
 
Other current assets consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Prepaid wafer purchase
  $
5,000
    $
-
 
Other prepaid expense
   
2,249
     
2,128
 
Other
   
1,794
     
798
 
Total
  $
9,043
    $
2,926
 
 
Property and Equipment, Net
 
Property and equipment, net, consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Production equipment and software
  $
95,565
    $
92,208
 
Buildings and improvements
   
48,964
     
34,736
 
Transportation equipment
   
11,291
     
4,694
 
Land
   
8,285
     
5,600
 
Furniture and fixtures
   
3,518
     
2,962
 
Leasehold improvements
   
2,838
     
2,283
 
Property and equipment, gross
   
170,461
     
142,483
 
Less: accumulated depreciation and amortization
   
(85,290
)    
(77,124
)
Total
  $
85,171
    $
65,359
 
 
Depreciation and amortization expense was
$12.6
million,
$12.0
million and
$12.4
million for the years ended
December
31,
2016,
2015
and
2014,
respectively.
 
Other Long-Term Assets
 
Other long-term assets consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Deferred compensation plan assets
  $
20,288
    $
13,985
 
Prepaid wafer purchase
   
5,000
     
-
 
Other prepaid expense
   
1,117
     
1,257
 
Other
   
1,006
     
1,099
 
Total
  $
27,411
    $
16,341
 
 
Accrued Liabilities
 
Accrued liabilities consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Dividends and dividend equivalents
  $
8,946
    $
8,675
 
Deferred revenue and customer prepayments
   
6,799
     
5,236
 
Stock rotation reserve
   
1,937
     
2,372
 
Income tax payable
   
1,239
     
465
 
Warranty
   
1,030
     
289
 
Commissions
   
1,008
     
763
 
Sales rebate
   
441
     
268
 
Other
   
1,516
     
1,916
 
Total
  $
22,916
    $
19,984
 
 
Other Long-Term Liabilities
 
Other long-term liabilities consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Deferred compensation plan liabilities
  $
19,836
    $
14,147
 
Dividend equivalents
   
3,294
     
2,019
 
Other
   
89
     
379
 
Total
  $
23,219
    $
16,545