Recorded Investment in financing receivables that are non accrual performing loans as of balance sheet date.

No definition available.

Name:	tcfc_FinancingReceivableRecordedInvestmentNonAccrualPerformingLoans
Namespace Prefix:	tcfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable, recorded investment, number of contracts.

+ References

No definition available.

+ Details

Name:	tcfc_FinancingReceivableRecordedInvestmentNumberOfContracts
Namespace Prefix:	tcfc_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- Definition

Days Delinquent

+ References

No definition available.

+ Details

Name:	tcfc_NumberOfLoans90OrGreaterDaysDaysDelinquent
Namespace Prefix:	tcfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Nonaccrual Performing Loans

+ References

No definition available.

+ Details

Name:	tcfc_NumberOfLoansNonAccrualPerformingLoans
Namespace Prefix:	tcfc_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- Definition

Total Number of loans.

+ References

No definition available.

+ Details

Name:	tcfc_TotalNumberOfLoan
Namespace Prefix:	tcfc_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcfc_ResidentialFirstMortgagesPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcfc_ResidentialRentalsPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcfc_HomeEquityAndSecondMortgagesPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcfc_CommercialEquipmentPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans (Schedule of Financing Receivables, Non-Accrual Status) (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2019 Loan	Dec. 31, 2019 loan	Dec. 31, 2018 USD ($)	Dec. 31, 2018 Loan	Dec. 31, 2018 loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 12,787			$ 11,152
Number of Loans \| Loan		21			23
Non-accrual Current Loans	5,070			8,130
Number of Loans \| Loan		18			15
Total Non-accrual Loans	17,857			19,282
Total Number of Loans		39	39		38	38
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	10,562			8,474
Number of Loans \| Loan		11			11
Non-accrual Current Loans	1,687			6,158
Number of Loans \| Loan		5			6
Total Non-accrual Loans	12,249			14,632
Total Number of Loans \| Loan		16			17
Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	0			146
Number of Loans \| Loan					1
Non-accrual Current Loans	830			1,228
Number of Loans \| Loan		3			4
Total Non-accrual Loans	830			1,374
Total Number of Loans \| Loan		3			5
Residential Rentals Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	0			260
Number of Loans \| Loan					2
Non-accrual Current Loans	937			703
Number of Loans \| Loan		5			3
Total Non-accrual Loans	937			963
Total Number of Loans \| Loan		5			5
Home Equity And Second Mortgages Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	177			147
Number of Loans \| Loan		3			2
Non-accrual Current Loans	271			0
Number of Loans \| Loan		3
Total Non-accrual Loans	448			147
Total Number of Loans \| Loan		6			2
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	1,807			866
Number of Loans \| Loan		2			2
Non-accrual Current Loans	1,320
Number of Loans \| Loan		1
Total Non-accrual Loans	3,127			866
Total Number of Loans \| Loan		3			2
Commercial Equipment Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	241			1,259
Number of Loans \| Loan		5			5
Non-accrual Current Loans	25			41
Number of Loans \| Loan		1			2
Total Non-accrual Loans	$ 266			$ 1,300
Total Number of Loans \| Loan		6			7