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Stock Incentive Plan - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | May 24, 2017
Stock Option Disclosures |  |  |  |  |
Share-based compensation expense | $ 2,674 | $ 2,041 | $ 4,989 | $ 3,770 |
Granted |  |  | 285,091 |  |
Weighted average estimated grant date fair value per share |  |  | $ 19.13 | $ 24.45 |
Directors and Officers Stock Options [Member] | Per Quarter, Over One Year |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting percentage |  |  | 25.00% |  |
Vesting period (in years) |  |  | 1 year |  |
Stock Options |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Unrecognized compensation costs related to non-vested stock options and restricted stock awards | $ 23,180 |  | $ 23,180 |  |
AxoGen 2010 Stock Incentive Plan [Member] |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Shares authorized for issuance |  |  |  |  | 7,700,000
Number of shares available for issuance | 423,094 |  | 423,094 |  |
AxoGen 2010 Stock Incentive Plan [Member] | Minimum |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting period (in years) |  |  | 7 years |  |
AxoGen 2010 Stock Incentive Plan [Member] | Maximum |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting period (in years) |  |  | 10 years |  |
AxoGen 2010 Stock Incentive Plan [Member] | Stock Options |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting period (in years) |  |  | 4 years |  |
AxoGen 2010 Stock Incentive Plan [Member] | Stock Options | One Year After Grant Date |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting percentage |  |  | 25.00% |  |
Vesting period (in years) |  |  | 1 year |  |
AxoGen 2010 Stock Incentive Plan [Member] | Stock Options | Every Six Months |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting percentage |  |  | 12.50% |  |
Vesting period (in years) |  |  | 3 years |  |
AxoGen 2017 Employee Stock Purchase Plan [Member] |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Shares authorized for issuance |  |  |  |  | 600,000
Number of shares available for issuance | 486,563 |  | 486,563 |  |
AxoGen 2017 Employee Stock Purchase Plan [Member] | Directors and Officers Stock Options [Member] |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |
AxoGen 2017 Employee Stock Purchase Plan [Member] | Stock Options |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting period (in years) |  |  | 4 years |  |
AxoGen 2017 Employee Stock Purchase Plan [Member] | Stock Options | Every Six Months |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting percentage |  |  | 12.50% |  |
Vesting period (in years) |  |  | 2 years |  |
AxoGen 2017 Employee Stock Purchase Plan [Member] | Stock Options | Two Years After Grant Date |  |  |  |  |
Stock Option Disclosures |  |  |  |  |
Vesting percentage |  |  | 50.00% |  |
Vesting period (in years) |  |  | 2 years |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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