|
Note 6 - Stockholder's Equity (Tables)
|
12 Months Ended |
|
Dec. 31, 2013
|
| Note 6 - Stockholder's Equity (Tables) [Line Items] |
|
| Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] |
|
|
|
Year Ended December 31,
|
|
|
|
|
2013
|
|
|
2012
|
|
|
2011
|
|
|
Cost of revenue
|
|
$
|
631
|
|
|
$
|
510
|
|
|
$
|
312
|
|
|
Research and development
|
|
|
6,219
|
|
|
|
6,922
|
|
|
|
5,909
|
|
|
Selling, general and administrative
|
|
|
13,851
|
|
|
|
11,220
|
|
|
|
6,905
|
|
|
Tax benefit
|
|
|
-
|
|
|
|
(187
|
)
|
|
|
(114
|
)
|
|
Total
|
|
$
|
20,701
|
|
|
$
|
18,465
|
|
|
$
|
13,012
|
|
|
| Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|
|
|
Time-Based RSUs
|
|
|
Weighted-Average Grant
Date Fair Value Per Share
|
|
|
PSUs
|
|
|
Weighted-Average Grant Date Fair Value Per Share
|
|
|
MSUs
|
|
|
Weighted-Average Grant Date Fair Value Per Share
|
|
|
Total
|
|
|
Weighted-Average Grant Date Fair Value Per Share
|
|
|
Outstanding at January 1, 2011
|
|
|
616,549
|
|
|
$
|
19.41
|
|
|
|
343,625
|
|
|
$
|
20.73
|
|
|
|
-
|
|
|
$
|
-
|
|
|
|
960,174
|
|
|
$
|
19.88
|
|
|
Awards granted
|
|
|
853,480
|
|
|
|
14.40
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
853,480
|
|
|
|
14.40
|
|
|
Awards released
|
|
|
(310,976
|
)
|
|
|
17.78
|
|
|
|
(102,125
|
)
|
|
|
20.73
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(413,101
|
)
|
|
|
18.51
|
|
|
Awards forfeited
|
|
|
(76,622
|
)
|
|
|
18.39
|
|
|
|
(24,375
|
)
|
|
|
20.73
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(100,997
|
)
|
|
|
18.95
|
|
|
Outstanding at December 31, 2011
|
|
|
1,082,431
|
|
|
|
16.00
|
|
|
|
217,125
|
|
|
|
20.73
|
|
|
|
-
|
|
|
|
-
|
|
|
|
1,299,556
|
|
|
|
16.87
|
|
|
Awards modification (1)
|
|
|
(76,500
|
)
|
|
|
15.69
|
|
|
|
76,500
|
|
|
|
15.69
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
Awards granted (2)(3)
|
|
|
617,084
|
|
|
|
18.69
|
|
|
|
962,796
|
|
|
|
18.24
|
|
|
|
-
|
|
|
|
-
|
|
|
|
1,579,880
|
|
|
|
18.42
|
|
|
Performance adjustment (4)
|
|
|
-
|
|
|
|
-
|
|
|
|
(624,403
|
)
|
|
|
18.19
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(624,403
|
)
|
|
|
18.19
|
|
|
Awards released
|
|
|
(447,096
|
)
|
|
|
17.30
|
|
|
|
(96,500
|
)
|
|
|
20.73
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(543,596
|
)
|
|
|
17.91
|
|
|
Awards forfeited
|
|
|
(77,356
|
)
|
|
|
16.61
|
|
|
|
(4,333
|
)
|
|
|
19.07
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(81,689
|
)
|
|
|
16,74
|
|
|
Outstanding at December 31, 2012
|
|
|
1,098,563
|
|
|
|
16.96
|
|
|
|
531,185
|
|
|
|
18.49
|
|
|
|
-
|
|
|
|
-
|
|
|
|
1,629,748
|
|
|
|
17.46
|
|
|
Awards granted (3)
|
|
|
298,908
|
|
|
|
24.25
|
|
|
|
874,806
|
|
|
|
24.43
|
|
|
|
1,800,000
|
|
|
|
23.57
|
|
|
|
2,973,714
|
|
|
|
23.89
|
|
|
Performance adjustment (4)
|
|
|
-
|
|
|
|
-
|
|
|
|
(124,141
|
)
|
|
|
21.98
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(124,141
|
)
|
|
|
21.98
|
|
|
Awards released
|
|
|
(518,552
|
)
|
|
|
17.57
|
|
|
|
(206,409
|
)
|
|
|
18.90
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(724,961
|
)
|
|
|
17.95
|
|
|
Awards forfeited
|
|
|
(124,613
|
)
|
|
|
17.06
|
|
|
|
(47,659
|
)
|
|
|
19.06
|
|
|
|
-
|
|
|
|
-
|
|
|
|
(172,272
|
)
|
|
|
17.61
|
|
|
Outstanding at December 31, 2013
|
|
|
754,306
|
|
|
|
19.41
|
|
|
|
1,027,782
|
|
|
|
23.02
|
|
|
|
1,800,000
|
|
|
|
23.57
|
|
|
|
3,582,088
|
|
|
|
22.53
|
|
|
| Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|
|
|
|
|
|
Options Outstanding
|
|
|
Options Exercisable
|
|
|
Range of Exercises
Prices
|
|
Shares
|
|
|
Weighted-Average
Remaining Contractual
Life (Years)
|
|
|
Weighted-Average
Exercise Price
|
|
|
Shares
|
|
|
Weighted-Average
Exercise Price
|
|
|
$0.76
|
-
|
$12.42
|
|
|
|
159,981
|
|
|
|
2.14
|
|
|
$
|
10.46
|
|
|
|
140,945
|
|
|
$
|
10.36
|
|
|
$12.57
|
-
|
$14.89
|
|
|
|
193,422
|
|
|
|
2.20
|
|
|
|
14.36
|
|
|
|
159,617
|
|
|
|
14.50
|
|
|
$14.93
|
-
|
$14.96
|
|
|
|
11,494
|
|
|
|
1.32
|
|
|
|
14.93
|
|
|
|
10,882
|
|
|
|
14.93
|
|
|
$15.03
|
-
|
$15.03
|
|
|
|
485,881
|
|
|
|
1.82
|
|
|
|
15.03
|
|
|
|
485,881
|
|
|
|
15.03
|
|
|
$15.13
|
-
|
$17.92
|
|
|
|
223,686
|
|
|
|
1.23
|
|
|
|
16.97
|
|
|
|
205,322
|
|
|
|
17.07
|
|
|
$18.17
|
-
|
$19.53
|
|
|
|
137,282
|
|
|
|
2.69
|
|
|
|
19.29
|
|
|
|
130,726
|
|
|
|
19.31
|
|
|
$19.56
|
-
|
$23.02
|
|
|
|
131,109
|
|
|
|
1.83
|
|
|
|
21.55
|
|
|
|
127,793
|
|
|
|
21.56
|
|
|
$23.09
|
-
|
$23.09
|
|
|
|
12,564
|
|
|
|
2.93
|
|
|
|
23.09
|
|
|
|
12,564
|
|
|
|
23.09
|
|
|
$23.50
|
-
|
$23.50
|
|
|
|
22
|
|
|
|
2.72
|
|
|
|
23.50
|
|
|
|
22
|
|
|
|
23.50
|
|
|
$24.67
|
-
|
$24.67
|
|
|
|
1,005
|
|
|
|
1.46
|
|
|
|
24.67
|
|
|
|
1,005
|
|
|
|
24.67
|
|
|
|
|
|
|
|
|
1,356,446
|
|
|
|
|
|
|
|
|
|
|
|
1,274,757
|
|
|
|
|
|
|
|
Employee Stock Option [Member]
|
|
| Note 6 - Stockholder's Equity (Tables) [Line Items] |
|
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|
|
|
Year Ended December 31,
|
|
|
|
|
2012
|
|
|
2011
|
|
|
Expected term (years)
|
|
|
4.1
|
|
|
|
4.1
|
|
|
Expected volatility
|
|
|
53.4
|
%
|
|
|
52.9
|
%
|
|
Risk-free interest rate
|
|
|
0.6
|
%
|
|
|
1.1
|
%
|
|
Dividend yield
|
|
|
-
|
|
|
|
-
|
|
|
|
Employee Stock Purchase Program [Member]
|
|
| Note 6 - Stockholder's Equity (Tables) [Line Items] |
|
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|
|
|
Year Ended December 31,
|
|
|
|
|
2013
|
|
|
2012
|
|
|
2011
|
|
|
Expected term (years)
|
|
|
0.5
|
|
|
|
0.5
|
|
|
|
0.5
|
|
|
Expected volatility
|
|
|
28.0
|
%
|
|
|
45.8
|
%
|
|
|
39.2
|
%
|
|
Risk-free interest rate
|
|
|
0.1
|
%
|
|
|
0.1
|
%
|
|
|
0.1
|
%
|
|
Dividend yield
|
|
|
-
|
|
|
|
-
|
|
|
|
-
|
|
|
|
Plan Status [Member]
|
|
| Note 6 - Stockholder's Equity (Tables) [Line Items] |
|
| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|
|
|
Stock
Options
|
|
|
Weighted Average Exercise Price
|
|
|
Weighted-Average Remaining Contractual
Term (Years)
|
|
|
Aggregate
Intrinsic Value
|
|
|
Outstanding at January 1, 2011
|
|
|
5,835,118
|
|
|
$
|
14.61
|
|
|
|
4.30
|
|
|
$
|
19,035,591
|
|
|
Options granted (weighted-average fair value of $5.85 per share)
|
|
|
152,500
|
|
|
|
13.96
|
|
|
|
|
|
|
|
|
|
|
Options exercised
|
|
|
(685,417
|
)
|
|
|
6.85
|
|
|
|
|
|
|
|
|
|
|
Options forfeited and expired
|
|
|
(438,962
|
)
|
|
|
18.66
|
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2011
|
|
|
4,863,239
|
|
|
|
15.31
|
|
|
|
3.44
|
|
|
|
8,817,049
|
|
|
Options granted (weighted-average fair value of $8.22 per share) (1)
|
|
|
178,484
|
|
|
|
15.63
|
|
|
|
|
|
|
|
|
|
|
Options exercised
|
|
|
(1,151,884
|
)
|
|
|
11.62
|
|
|
|
|
|
|
|
|
|
|
Options forfeited and expired
|
|
|
(76,478
|
)
|
|
|
20.90
|
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2012
|
|
|
3,813,361
|
|
|
|
15.62
|
|
|
|
2.56
|
|
|
|
25,379,573
|
|
|
Options exercised
|
|
|
(2,445,523
|
)
|
|
|
15.49
|
|
|
|
|
|
|
|
|
|
|
Options forfeited and expired
|
|
|
(11,392
|
)
|
|
|
15.27
|
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2013
|
|
|
1,356,446
|
|
|
|
15.86
|
|
|
|
1.91
|
|
|
|
25,505,753
|
|
|
Options exercisable at December 31, 2013 and expected to vest
|
|
|
1,353,337
|
|
|
|
15.86
|
|
|
|
1.91
|
|
|
|
25,437,135
|
|
|
Options exercisable at December 31, 2013
|
|
|
1,274,757
|
|
|
|
15.96
|
|
|
|
1.76
|
|
|
|
23,843,458
|
|
|