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Balance Sheet Information (Tables)
9 Months Ended
Sep. 30, 2011
Balance Sheet Information 
Schedule of available-for-sale securities

 

 

 

September 30, 2011

 

 

 

Amortized
Cost

 

Gains in Accumulated
Other Comprehensive
Income

 

Losses in Accumulated
Other Comprehensive
Income

 

Estimated
Fair Value

 

Commercial paper

 

$

24,284

 

$

6

 

$

 

$

24,290

 

 

 

 

 

 

 

 

 

 

 

FDIC insured corporate bonds

 

137,138

 

153

 

 

137,291

 

 

 

 

 

 

 

 

 

 

 

Treasury bills

 

51,116

 

30

 

 

51,146

 

Total available-for-sale securities

 

$

212,538

 

$

189

 

$

 

$

212,727

 

 

 

 

December 31, 2010

 

 

 

Amortized
Cost

 

Gains in Accumulated
Other Comprehensive
Income

 

Losses in Accumulated
Other Comprehensive
Income

 

Estimated
Fair Value

 

Commercial paper

 

$

128,527

 

$

61

 

$

 

$

128,588

 

 

 

 

 

 

 

 

 

 

 

FDIC insured corporate bonds

 

129,353

 

24

 

 

129,377

 

 

 

 

 

 

 

 

 

 

 

Treasury bills

 

136,203

 

12

 

 

136,215

 

Total available-for-sale securities

 

$

394,083

 

$

97

 

$

 

$

394,180

 

Schedule of contractual maturities of available-for-sale debt securities

 

 

 

Estimated Fair Value

 

Due in one year or less

 

$

31,503

 

 

 

 

 

Due in 1–2 years

 

181,224

 

Total investments in debt securities

 

$

212,727

 

Schedule of inventories

 

 

 

September 30,

 

December 31,

 

 

 

2011

 

2010

 

Raw materials

 

$

62,678

 

$

49,953

 

Work in process

 

28,026

 

33,181

 

Finished goods

 

36,814

 

25,353

 

 

 

$

127,518

 

$

108,487

 

Schedule of changes in goodwill

 

 

 

Nine months ended

 

 

 

September 30,

 

 

 

2011

 

Beginning Balance

 

$

52,003

 

Write-off (see Note 3)

 

(10,836

)

Acquisition (see Note 2)

 

15,104

 

Ending Balance

 

$

56,271

 

Schedule of changes in warranty liability

 

 

 

Nine months ended

 

 

 

September 30,

 

 

 

2011

 

2010

 

Balance as of the beginning of period

 

$

9,238

 

$

6,675

 

Warranties issued during the period

 

7,935

 

7,242

 

Settlements made during the period

 

(6,870

)

(4,906

)

Balance as of the end of period

 

$

10,303

 

$

9,011