The additional number of common stock to be issued under stock purchase agreement.

No definition available.

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Namespace Prefix:	syn_
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Balance Type:	na
Period Type:	instant

- Definition

Amount represents the fair value of shares issued.

+ References

No definition available.

+ Details

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Namespace Prefix:	syn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The additional number of common stock to be held by the related party under stock purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	syn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of common stock to be issued under stock purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	syn_
Data Type:	xbrli:sharesItemType
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Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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Non-controlling Interest and Related Party (Details) - USD ($)		3 Months Ended		6 Months Ended
	Sep. 05, 2018	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Noncontrolling Interest
Related Party Transaction, Expenses from Transactions with Related Party	$ 328,000
SYN Biomics [Member]
Noncontrolling Interest
Equity Method Investment, Ownership Percentage		100.00%		100.00%
Related Party Transaction, Expenses from Transactions with Related Party		$ 0	$ 0	$ 0	$ 0
Cedarssinai Medical Center [Member]
Noncontrolling Interest
Number Of Common Stock To Be Issued	5,000
Fair Value Of Shares Issued	$ 285,000
Cedarssinai Medical Center [Member] \| SYN Biomics [Member]
Noncontrolling Interest
Additional Number Of Common Stock To Be Issued	2,420,000
Number Of Common Stock To Be Held By Related Party	7,480,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	17.00%