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Note 10 - Subordinated Debentures (Details Textual) | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2020 USD ($) shares | Oct. 31, 2018 USD ($) shares | Sep. 30, 2020 USD ($) $ / shares | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument, Face Amount |  |  | $ 105,000,000 |  | $ 105,000,000 |  | $ 105,000,000
Debt Amortization Expense |  |  | 54,000 | $ 42,000 | 164,000 | $ 125,000 |
Interest Expense, Debt, Total |  |  | 1,662,000 | 1,662,000 | 4,987,000 | 4,987,000 |
Subordinated Debt [Member] |  |  |  |  |  |  |
Debt Amortization Expense |  |  | 102,000 | $ 131,000 |  |  |
Interest Expense, Debt, Total |  |  |  |  | 369,000 | $ 415,000 |
TFC Statutory Trust [Member] | Other Assets [Member] |  |  |  |  |  |  |
Common Stock Held in Trust |  |  | 155,000 |  | 155,000 |  |
TFC Statutory Trust [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |
Subordinated Debt Obligations, Fair Value Disclosure |  |  | 3,300,000 |  | 3,300,000 |  |
TFC Statutory Trust [Member] | Subordinated Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | 5,000,000 |  | 5,000,000 |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance |  |  | $ 1,900,000 |  | $ 1,900,000 |  |
Debt Instrument Redemption, Percentage of Principal Amount Outstanding |  |  |  |  | 100.00% |  |
Debt Instrument, Maximum Number Of Period For Deferred Interest Payments (Year) |  |  |  |  | 5 years |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 1.65% |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 1.90% |  | 1.90% |  | 3.54%
TFC Statutory Trust [Member] | Private Placement [Member] |  |  |  |  |  |  |
Number of Trust Preferred Securities (in shares) | shares |  |  |  |  | 5,000 |  |
Trust Preferred Securities Lquidation Amount Per Preferred Security (in dollars per share) | $ / shares |  |  | $ 1,000 |  | $ 1,000 |  |
First American International Statutory Trust I 1[Member] |  |  |  |  |  |  |
Common Unit, Issued (in shares) | shares |  | 7,000 |  |  |  |  |
Floating Rate Maturity Period (Year) |  | 30 years |  |  |  |  |
Common Unit Liquidation Preference Value |  | $ 7,000,000 |  |  |  |  |
First American International Statutory Trust I 1[Member] | Other Assets [Member] |  |  |  |  |  |  |
Common Stock Held in Trust |  | 217,000 |  |  |  |  |
First American International Statutory Trust I 1[Member] | Subordinated Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | 7,200,000 |  |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance |  | $ 1,200,000 |  |  |  |  |
Debt Instrument, Maximum Number Of Period For Deferred Interest Payments (Year) |  | 5 years |  |  |  |  |
First American International Statutory Trust I 1[Member] | Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.25% |  |  |  |  |
First American International Statutory Trust I [Member] | Subordinated Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 2.50% |  | 2.50% |  | 4.14%
PGB Holdings Inc And Banking Subsidiary Pacific Global Bank [Member] |  |  |  |  |  |  |
Common Unit, Issued (in shares) | shares | 5,000 |  |  |  |  |  |
Common Unit Liquidation Preference Value | $ 5,000,000 |  |  |  |  |  |
Number of Common Securities | 155 |  |  |  |  |  |
Common Securities Liquidation Preference Value | $ 155,000 |  |  |  |  |  |
PGB Holdings Inc And Banking Subsidiary Pacific Global Bank [Member] | Subordinated Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount | 5,200,000 |  |  |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance | $ 763,000 |  |  |  |  |  |
Debt Instrument, Maximum Number Of Period For Deferred Interest Payments (Year) | 5 years |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 2.35% |  | 2.35% |  |
PGB Holdings Inc And Banking Subsidiary Pacific Global Bank [Member] | Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.10% |  |  |  |  |  |

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