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Borrowings (Narrative) (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Apr. 15, 2015 | Dec. 31, 2019 | Dec. 31, 2018
Short Term And Long Term Borrowings [Line Items] |  |  |
Short-term FHLB borrowings |  | $ 275,500,000 | $ 405,500,000
Outstanding under unsecured federal funds purchased |  |  | $ 64,000,000
Short-term borrowings, weighted average rate |  | 1.88% | 2.64%
Line of credit drawn amount |  | $ 0 | $ 0
Subordinated Notes Due April 15, 2030 [Member] |  |  |
Short Term And Long Term Borrowings [Line Items] |  |  |
Principal amount | $ 40,000,000 |  |
Interest rate | 6.00% |  |
Number of years at stated rate |  | 10 years |
Proceeds from issuance of debt, net |  | $ 38,900,000 |
Debt issuance costs |  | $ 1,100,000 |
Debt issuance cost amortization period |  | 15 years |
Subordinated Notes Due April 15, 2030 [Member] | LIBOR [Member] |  |  |
Short Term And Long Term Borrowings [Line Items] |  |  |
Spread on variable rate | 3.944% |  |
Commercial Bank [Member] |  |  |
Short Term And Long Term Borrowings [Line Items] |  |  |
Revolving line of credit allowing borrowings |  | $ 20,000,000 |
Federal Home Loan Bank Overnight Borrowings [Member] |  |  |
Short Term And Long Term Borrowings [Line Items] |  |  |
Short-term FHLB borrowings |  | 10,000,000 | 200,000,000
Federal Home Loan Borrowings Short Term Advances [Member] |  |  |
Short Term And Long Term Borrowings [Line Items] |  |  |
Short-term FHLB borrowings |  | $ 265,500,000 | $ 205,500,000

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- Definition Short-term and long-term borrowings. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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