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v3.21.2

Share-Based Compensation - Summary Activity in shares Subjected to Options and Weighted Average Exercise Prices (Details) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares
BYB Plan |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of Shares, Beginning balance | 1,390,579 |
Number of Shares, Exercised | (46,031) | (19,496)
Number of Shares, Expired | 0 |
Number of Shares, Ending balance | 1,344,548 | 1,390,579
Number of Shares, Exercisable | 1,344,548 |
Weighted Average Exercise Price, Beginning balance | $ / shares | $ 11.36 |
Weighted Average Exercise Price, Exercised | $ / shares | 13.66 |
Weighted Average Exercise Price, Ending balance | $ / shares | 11.28 | $ 11.36
Weighted Average Exercise Price, Exercisable | $ / shares | $ 11.28 |
Intrinsic Value, Beginning balance | $ | $ 5,724 |
Intrinsic Value, Exercised | $ | 359 |
Intrinsic Value, Ending balance | $ | 17,851 | $ 5,724
Intrinsic Value, Exercisable | $ | $ 17,851 |
Weighted Average Remaining Contractual Term (in Years) | 3 years 8 months 12 days | 4 years 4 months 24 days
Weighted Average Remaining Contractual Term (in Years), Exercisable | 3 years 8 months 12 days |
FEB Plan |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of Shares, Beginning balance | 233,630 |
Number of Shares, Exercised | (46,774) | (255,615)
Number of Shares, Expired | 0 |
Number of Shares, Ending balance | 186,856 | 233,630
Number of Shares, Exercisable | 186,856 |
Weighted Average Exercise Price, Beginning balance | $ / shares | $ 11.52 |
Weighted Average Exercise Price, Exercised | $ / shares | 11.55 |
Weighted Average Exercise Price, Ending balance | $ / shares | 11.52 | $ 11.52
Weighted Average Exercise Price, Exercisable | $ / shares | $ 11.52 |
Intrinsic Value, Beginning balance | $ | $ 918 |
Intrinsic Value, Exercised | $ | 313 |
Intrinsic Value, Ending balance | $ | 2,437 | $ 918
Intrinsic Value, Exercisable | $ | $ 2,437 |
Weighted Average Remaining Contractual Term (in Years) | 3 years 3 months 18 days | 3 years 3 months 18 days
Weighted Average Remaining Contractual Term (in Years), Exercisable | 3 years 3 months 18 days |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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