Security Owned and Pledged as Collateral Amortized Cost

No definition available.

Name:	fcco_SecurityOwnedAndPledgedAsCollateralAmortizedCost
Namespace Prefix:	fcco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 325
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123599499&loc=d3e63345-112809

+ Details

Name:	us-gaap_FederalHomeLoanBankStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Name:	us-gaap_MarketableSecuritiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_FinancialInstrumentAxis=fcco_MutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
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Investment Securities (Details Narrative) - USD ($)	9 Months Ended
Investment Securities (Details Narrative) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	$ 513,500,000
Federal Home Loan Bank Stock	698,400		$ 1,100,000
Corporate Fixed To Float Bonds [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	7,100,000		3,300,000
Mutual Funds [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	10,400		8,000.0
Available-for-sale Securities, Gross Realized Gains	2,400	$ 2,100
Debt Security, Corporate, Non-US [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	10,000.0		10,000.0
Corporate Bond Securities [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	1,000,000.0		1,000,000.0
Venture Capital Funds [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale	61,700
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Marketable Securities [Line Items]
[custom:SecurityOwnedAndPledgedAsCollateralAmortizedCost-0]	396,900,000		257,300,000
Security Owned and Pledged as Collateral, Fair Value	398,600,000		265,400,000
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Marketable Securities [Line Items]
[custom:SecurityOwnedAndPledgedAsCollateralAmortizedCost-0]	49,100		57,400
Security Owned and Pledged as Collateral, Fair Value	$ 47,100		$ 54,700