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Stock-Based Compensation - Summary of Stock Option and Restricted Stock Awards (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Number Outstanding, Options exercised |  |
Stock Options [Member] |  |
Number Outstanding, Outstanding, Beginning Balance | 4,332,142 |
Number Outstanding, Granted | 644,000 |
Number Outstanding, Options exercised | (140,864) |
Number Outstanding, Vested and issued |  |
Number Outstanding, Forfeited, cancelled or expired | (110,002) |
Number Outstanding, Ending Balance | 4,725,276 | 4,332,142
Number Outstanding, Exercisable | 3,194,777 |
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ 2.63 |
Weighted Average Exercise Price, Granted | 3.52 |
Weighted Average Exercise Price, Options exercised | 2.64 |
Weighted Average Exercise Price, Vested and issued |  |
Weighted Average Exercise Price, Forfeited, cancelled or expired | 2.21 |
Weighted Average Exercise Price, Outstanding, Ending Balance | 2.76 | $ 2.63
Weighted Average Exercise Price, Exercisable | $ 2.86 |
Aggregate Intrinsic Value, Outstanding, Ending Balance | $ 5,494,924 |
Aggregate Intrinsic Value, Exercisable | $ 3,733,421 |
Restricted Stock [Member] |  |
Weighted Average Remaining Contractual Term (years), Outstanding, Ending Balance | 8 years 3 months 19 days |
Weighted Average Remaining Contractual Term (years), Exercisable | 7 years 9 months 18 days |
Number Outstanding, Non-vested stock awards outstanding, Beginning Balance | 8,750 |
Number Outstanding, Non-vested stock awards outstanding, Granted | 429,855 |
Number Outstanding, Non-vested stock awards outstanding, Options exercised |  |
Number Outstanding, Non-vested stock awards outstanding, Vested and issued | (429,855) |
Number Outstanding, Non-vested stock awards outstanding, Forfeited |  |
Number Outstanding, Non-vested stock awards outstanding, Ending Balance | 8,750 | 8,750
Weighted Average Grant Date Fair Value, Non-vested stock awards, Beginning Balance | $ 1.59 |
Weighted Average Grant Date Fair Value, Non-vested stock awards, Granted | 1.16 |
Weighted Average Grant Date Fair Value, Non-vested stock awards, Options exercised |  |
Weighted Average Grant Date Fair Value, Non-vested stock awards, Vested and issued | 1.16 |
Weighted Average Grant Date Fair Value, Non-vested stock awards, Forfeited |  |
Weighted Average Grant Date Fair Value, Non-vested stock awards, Ending Balance | $ 1.59 | $ 1.59
Aggregate Intrinsic Value, Outstanding, Non-vested stock awards, Ending Balance | $ 7,875 |

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- Definition Weighted Average Grant Date Fair Value, Non-vested stock awards, Options exercised. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 Weighted average price of options that were either forfeited or expired. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + 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)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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