XML 39 R25.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

STOCK BASED COMPENSATION (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
STOCK-BASED COMPENSATION |
Schedule of the company's stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ | ​ | ​ | ​ |  | Weighted Average
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining
​ | ​ | ​ | ​ | Weighted Average | ​ | ​ | ​ | ​ | Contractual
​ |  | Number of Shares |  | Exercise Price |  | Total Intrinsic Value |  | Life (in years)
Outstanding as of January 1, 2024 |  | 737,895 | ​ | $ | 25.42 | ​ | $ | 1,317,000 | ​ | 7.6
Exercised | ​ | (19,497) | ​ | ​ | 2.52 | ​ | ​ | — | ​ | —
Canceled/Expired |  | (79,196) | ​ | ​ | 52.95 | ​ | ​ | — | ​ | —
Outstanding as of March 31, 2024 |  | 639,202 | ​ | $ | 22.71 | ​ | $ | 720,000 | ​ | 7.5
Options vested and exercisable |  | 329,916 | ​ | $ | 41.17 | ​ | $ | 113,000 | ​ | 6.2
Schedule of stock-based compensation expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2024 |  | 2023
Stock Compensation expenses: |  | ​ |  |  | ​ |
Research and development | ​ | $ | 6,000 | ​ | $ | 151,000
General and administrative | ​ |  | 73,000 | ​ |  | 221,000
Stock compensation in continuing operations | ​ | ​ | 79,000 | ​ | ​ | 372,000
Stock compensation in discontinued operations | ​ | ​ | — | ​ | ​ | 288,000
Total stock compensation expenses | ​ | $ | 79,000 | ​ | $ | 660,000

X
- Definition Tabular disclosure of stock based compensation expenses recorded. + References No definition available. + Details
Name: | mrkr_StockBasedCompensationExpensesTableTextBlock
Namespace Prefix: | mrkr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration