XML 30 R14.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Net income per share attributable to common stockholders | 12 Months Ended
--- | ---
Dec. 31, 2015
Earnings Per Share [Abstract] |
Net income per share attributable to common stockholders | Net income per share attributable to common stockholders Basic and diluted net income per common share is presented in conformity with the two-class method required for participating securities. The Company considers shares issued upon the early exercise of options subject to repurchase and non-vested restricted shares to be participating securities, because holders of such shares have a non-forfeitable right to dividends. Additionally, prior to the Company's IPO and their conversion, the Company considered its redeemable convertible preferred stock to be participating securities due to their non-cumulative dividend rights. Basic net income per share attributable to common stockholders is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period. All participating securities are excluded from basic weighted average common shares outstanding. Diluted net income per share attributable to common stockholders is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding, including all potentially dilutive common shares. Undistributed earnings are allocated based on the contractual participation rights of Class A and Class B as if the earnings for the year have been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. The computation of the diluted net income per share of Class A common stock assumes the conversion of Class B common stock. The following table presents the calculations of basic and diluted net income per share attributable to common stockholders:
| Year ended December 31,
(in thousands, except per share data) | 2015 |  | 2014 |  | 2013
| Class A |  | Class B |  | Class A |  | Class B |  |
Numerator: |  |  |  |  |  |  |  |  |
Allocation of net income | $ | 24,559 |  |  | $ | 11,572 |  |  | $ | 16,647 |  |  | $ | 111,441 |  |  | $ | 60,578 |
Less: net income allocable to participating securities | — |  |  | — |  |  | (2,147 | ) |  | (14,365 | ) |  | (16,727 | )
Net income attributable to common stockholders—basic | 24,559 |  |  | 11,572 |  |  | 14,500 |  |  | 97,076 |  |  | 43,851 |
Add: net income allocable to dilutive participating securities | — |  |  | — |  |  | 2,277 |  |  | 1,981 |  |  | 2,309 |
Reallocation of net income as a result of conversion of Class B to Class A shares | 11,572 |  |  |  |  | 97,076 |  |  | — |  |  | — |
Reallocation of net income to Class B shares | — |  |  | 1,974 |  |  | — |  |  | 2,237 |  |  | — |
Net income attributable to common stockholders—diluted | $ | 36,131 |  |  | $ | 13,546 |  |  | $ | 113,853 |  |  | $ | 101,294 |  |  | $ | 46,160 |
Denominator: |  |  |  |  |  |  |  |  |
Weighted-average common shares—basic | 91,486 |  |  | 43,109 |  |  | 13,575 |  |  | 90,878 |  |  | 81,018 |
Conversion of Class B to Class A common stock outstanding | 43,109 |  |  | — |  |  | 90,878 |  |  | — |  |  | — |
Effect of potentially dilutive shares | 11,891 |  |  | 11,810 |  |  | 19,177 |  |  | 19,115 |  |  | 17,923 |
Weighted-average common shares—diluted | 146,486 |  |  | 54,919 |  |  | 123,630 |  |  | 109,993 |  |  | 98,941 |
Net income per share attributable to common stockholders: |  |  |  |  |  |  |  |  |
Basic | $ | 0.27 |  |  | $ | 0.27 |  |  | $ | 1.07 |  |  | $ | 1.07 |  |  | $ | 0.54 |
Diluted | $ | 0.25 |  |  | $ | 0.25 |  |  | $ | 0.92 |  |  | $ | 0.92 |  |  | 0.47 |
The following potentially dilutive shares were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
| Year ended December 31,
(in thousands) | 2015 |  | 2014 |  | 2013
Redeemable convertible preferred stock | — |  |  | 15,136 |  |  | 30,523
Stock options, ESPP shares, and RSUs | 2,680 |  |  | 360 |  |  | 1,409
Unvested restricted stock awards | 1 |  |  | 425 |  |  | 380
| 2,681 |  |  | 15,921 |  |  | 32,312 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration