XML 34 R21.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 6 - Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Notes Tables |
Share-based Payment Arrangement, Expensed, Amount [Table Text Block] |
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |
General and administrative |  | $ | 1,467 |  |  | $ | 1,461 |
Research and development |  |  | 808 |  |  |  | 912 |
Total stock-based compensation |  | $ | 2,275 |  |  | $ | 2,373 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |
Risk-free interest rate |  |  | 1.6% to 3.3% |  |  |  | 0.9% to 1.4% |
Volatility |  |  | 107.0% to 113.2% |  |  |  | 114.8% to 118.8% |
Expected life (years) |  |  | 5.3 to 6.3 |  |  |  | 5.3 to 6.2 |
Expected dividend yield |  |  | —% |  |  |  | —% |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding, December 31, 2021 |  |  | 1,438,352 |  |  | $ | 6.35 |  |  | $ | 8.45 |  |  |  | 7.8 |  |  | $ | — |
Granted |  |  | 842,832 |  |  | $ | 1.26 |  |  | $ | 1.49 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  | $ | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Forfeited |  |  | (5,834 | ) |  | $ | 15.57 |  |  | $ | 24.39 |  |  |  |  |  |  |  |  |
Outstanding, December 31, 2022 |  |  | 2,275,350 |  |  | $ | 4.44 |  |  | $ | 5.83 |  |  |  | 7.8 |  |  | $ | — |
Exercisable, December 31, 2022 |  |  | 927,723 |  |  | $ | 7.53 |  |  | $ | 10.38 |  |  |  | 6.3 |  |  | $ | — |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Weighted Average Remaining Contractual Term (years) |
Unvested Shares, December 31, 2021 |  |  | 220,559 |  |  | $ | 4.59 |  |  |  | 3.0 |
Granted |  |  | 452,334 |  |  | $ | 1.49 |  |  |  |  |
Vested |  |  | (65,421 | ) |  | $ | 4.98 |  |  |  |  |
Unvested Shares, December 31, 2022 |  |  | 607,472 |  |  | $ | 2.24 |  |  |  | 3.1 |

X
- Definition Tabular disclosure of allocation of amount expensed for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References No definition available. + Details
Name: | mbrx_SharebasedPaymentArrangementExpensedAmountTableTextBlock
Namespace Prefix: | mbrx_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration