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Equity Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement [Abstract] |
Summary of restricted and performance stock units | A summary of the Company’s RSUs and PSUs as of December 31, 2019 and 2018 and changes during the years then ended is presented below:
|  | Number of RSUs |  | Weighted- Average Fair Value RSUs |  | Number of PSUs |  | Weighted- Average Fair Value PSUs
Outstanding as of December 31, 2017 |  | 874,942 |  |  | $ | 20.15 |  |  | 1,185,912 |  |  | $ | 20.29 |
Granted |  | 473,724 |  |  | 23.49 |  |  | — |  |  | — |
Vested (1) |  | (466,834 | ) |  | 20.52 |  |  | (900,226 | ) |  | 20.29 |
Forfeited |  | — |  |  | — |  |  | (285,686 | ) |  | 20.29 |
Outstanding as of December 31, 2018 |  | 881,832 |  |  | $ | 21.75 |  |  | — |  |  | $ | — |
Granted |  | 655,522 |  |  | 23.51 |  |  | 207,077 |  |  | 23.47 |
Vested (2) |  | (567,836 | ) |  | 20.81 |  |  | — |  |  | — |
Forfeited |  | (22,275 | ) |  | 23.92 |  |  | — |  |  | — |
Outstanding as of December 31, 2019 |  | 947,243 |  |  | $ | 23.49 |  |  | 207,077 |  |  | $ | 23.47 |
_______________________________________________________________________________
(1) | Included 63,490 shares of common stock related to RSUs and 900,226 shares of common stock related to PSUs that were not delivered as of December 31, 2018. The aggregate fair value of RSUs vested and PSUs vested was $10.0 million and $19.0 million, respectively.
(2) Included 161,165 shares of common stock related to RSUs and no shares of common stock related to PSUs that were not delivered as of December 31, 2019. The aggregate fair value of RSUs vested was $12.9 million.
Summary of shares of common stock issued | A summary of shares of common stock issued related to the 2015 Plan, including the impact of any DERs issued in common stock, is presented below:
|  | Year ended |  | Year ended
|  | December 31, 2019 |  | December 31, 2018
|  | RSUs |  | PSUs |  | RSUs |  | PSUs
Shares of common stock issued |  | 410,787 |  |  | 900,226 |  |  | 403,538 |  |  | — |
Shares of common stock withheld by the Company as payment by employees in lieu of cash to satisfy tax withholding obligations |  | (126,242 | ) |  | (325,246 | ) |  | (122,795) |  |  | — |
Net shares of common stock issued |  | 284,545 |  |  | 574,980 |  |  | 280,743 |  |  | — |
Cumulative undelivered shares of common stock |  | 220,582 |  |  | — |  |  | 63,490 |  |  | 900,226 |
Schedule of the allocation of share-based compensation expense | Compensation expense recorded related to RSUs and PSUs in the consolidated statement of operations was as follows:
| Year ended December 31,
(in thousands) | 2019 |  | 2018 |  | 2017
RSU | $ | 9,140 |  |  | $ | 12,353 |  |  | $ | 9,318 |
PSU | 1,507 |  |  | 6,210 |  |  | 5,967 |
The allocation of share-based compensation expense in the consolidated statement of operations was as follows:
| Year ended December 31,
(in thousands) | 2019 |  | 2018 |  | 2017
Cost of goods sold | $ | 722 |  |  | $ | 680 |  |  | $ | 408 |
Selling, general and administrative expense | 9,402 |  |  | 16,507 |  |  | 13,687 |
Research and development | 851 |  |  | 1,376 |  |  | 1,190 |
Total compensation expense before income tax | 10,975 |  |  | 18,563 |  |  | 15,285 |
Income tax benefit | 2,440 |  |  | 4,398 |  |  | 3,158 |
Total compensation expense, net of tax | $ | 8,535 |  |  | $ | 14,165 |  |  | $ | 12,127 |

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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644 Reference 14: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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