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Stockholders' Equity (Details 1) | 12 Months Ended
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Dec. 31, 2016 $ / shares shares
$8.58 – $138.53 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | $ 8.58
Range of exercise prices (per share), upper | $ 138.53
Options outstanding (shares) | shares | 1,752,275
Weighted average remaining life in years | 6 years 2 months 9 days
Weighted average exercise price (per share) | $ 42.12
Options exercisable (shares) | shares | 1,298,561
Weighted average exercise price (per share) | $ 30.21
$8.58 - $12.53 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 8.58
Range of exercise prices (per share), upper | $ 12.53
Options outstanding (shares) | shares | 247,574
Weighted average remaining life in years | 3 years 11 months 9 days
Weighted average exercise price (per share) | $ 9.98
Options exercisable (shares) | shares | 247,574
Weighted average exercise price (per share) | $ 9.98
$10.12 - $12.81 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 10.12
Range of exercise prices (per share), upper | $ 12.81
Options outstanding (shares) | shares | 76,100
Weighted average remaining life in years | 4 years 11 months 1 day
Weighted average exercise price (per share) | $ 11.38
Options exercisable (shares) | shares | 76,100
Weighted average exercise price (per share) | $ 11.38
$14.47 - $14.47 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 14.47
Range of exercise prices (per share), upper | $ 14.47
Options outstanding (shares) | shares | 288,887
Weighted average remaining life in years | 5 years 1 month 10 days
Weighted average exercise price (per share) | $ 14.47
Options exercisable (shares) | shares | 274,887
Weighted average exercise price (per share) | $ 14.47
$16.14 - $21.00 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 16.14
Range of exercise prices (per share), upper | $ 21
Options outstanding (shares) | shares | 106,242
Weighted average remaining life in years | 1 year 10 months 6 days
Weighted average exercise price (per share) | $ 17.76
Options exercisable (shares) | shares | 106,242
Weighted average exercise price (per share) | $ 17.76
$21.92 - $21.92 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 21.92
Range of exercise prices (per share), upper | $ 21.92
Options outstanding (shares) | shares | 225,105
Weighted average remaining life in years | 6 years 1 month 17 days
Weighted average exercise price (per share) | $ 21.92
Options exercisable (shares) | shares | 213,199
Weighted average exercise price (per share) | $ 21.92
$32.00 - $53.34 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 32.00
Range of exercise prices (per share), upper | $ 53.34
Options outstanding (shares) | shares | 72,330
Weighted average remaining life in years | 6 years 7 days
Weighted average exercise price (per share) | $ 36.18
Options exercisable (shares) | shares | 62,747
Weighted average exercise price (per share) | $ 34.73
$56.26 - $59.26 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 56.26
Range of exercise prices (per share), upper | $ 59.26
Options outstanding (shares) | shares | 183,595
Weighted average remaining life in years | 8 years 1 month 10 days
Weighted average exercise price (per share) | $ 56.26
Options exercisable (shares) | shares | 70,877
Weighted average exercise price (per share) | $ 56.26
$63.58 - $68.62 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 63.58
Range of exercise prices (per share), upper | $ 68.62
Options outstanding (shares) | shares | 26,382
Weighted average remaining life in years | 7 years 6 months
Weighted average exercise price (per share) | $ 67.20
Options exercisable (shares) | shares | 21,976
Weighted average exercise price (per share) | $ 67.50
$74.42 - $74.42 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 74.42
Range of exercise prices (per share), upper | $ 74.42
Options outstanding (shares) | shares | 227,856
Weighted average remaining life in years | 7 years 1 month 13 days
Weighted average exercise price (per share) | $ 74.42
Options exercisable (shares) | shares | 162,233
Weighted average exercise price (per share) | $ 74.42
$85.79 - $138.53 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of exercise prices (per share), lower | 85.79
Range of exercise prices (per share), upper | $ 138.59
Options outstanding (shares) | shares | 298,204
Weighted average remaining life in years | 9 years 11 days
Weighted average exercise price (per share) | $ 93.19
Options exercisable (shares) | shares | 62,726
Weighted average exercise price (per share) | $ 89.71

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