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v3.21.1

Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2021
Stock-Based Compensation |
Summary of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Options Outstanding
​ | ​ | ​ | ​ | ​ | ​ | Weighted- | ​ | Weighted- | ​ | ​ | ​
​ | ​ | Options and | ​ | ​ | ​ | Average | ​ | Average | ​ | Aggregate
​ | ​ | Awards | ​ | ​ | ​ | Exercise | ​ | Remaining | ​ | Intrinsic
​ | ​ | Available for | ​ | Number of | ​ | Price Per | ​ | Contractual | ​ | Value
​ | ​ | Grant |  | Options |  | Share |  | Life (years) |  | (In thousands)
Balance—December 31, 2020 |  | 179,219 |  | 2,272,905 | ​ | $ | 5.58 |  | 7.9 | ​ | $ | 1,640
Authorized |  | 570,946 | ​ | — | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RSUs granted | ​ | (236,605) | ​ | — | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RSUs cancelled/forfeited | ​ | 31,626 | ​ | — | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options granted | ​ | (39,500) | ​ | 39,500 | ​ | $ | 5.52 | ​ | ​ | ​ | ​ | ​
Options exercised |  | — | ​ | (54,077) | ​ | $ | 2.66 | ​ | ​ | ​ | $ | 194
Options cancelled/forfeited |  | 134,857 | ​ | (136,432) | ​ | $ | 3.96 | ​ | ​ | ​ | ​ | ​
Balance—March 31, 2021 |  | 640,543 |  | 2,121,896 | ​ | $ | 5.75 |  | 6.1 | ​ | $ | 2,359
Options exercisable—March 31, 2021 |  | ​ |  | 1,288,863 | ​ | $ | 6.81 | ​ | 4.5 | ​ | $ | 586
Schedule of restricted stock unit activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | RSUs Outstanding
​ | ​ | ​ |  | Weighted-
​ | ​ | ​ |  | Average
​ | ​ | Number of |  | Grant Date
​ | ​ | Restricted Stock |  | Fair Value Per
​ |  | Units |  | Share
Balance—December 31, 2020 | ​ | 416,742 |  | $ | 4.89
Granted |  | 236,605 |  | ​ | 5.71
Vested | ​ | (136,709) |  | ​ | 5.16
Cancelled/forfeited | ​ | (31,626) |  | ​ | 4.12
Balance—March 31, 2021 |  | 485,012 |  | $ | 5.26

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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