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Basis of Accounting and Consolidation Basis of Accounting and Consolidation (Accounting Standards Updates) (Details) - USD ($) | Mar. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Jan. 01, 2019
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Operating lease right-of-use assets | $ 16,542,000 |  | $ 17,006,000 |
Operating lease liabilities | $ 16,568,000 |  | 17,007,000 |
Off-Balance Sheet, Credit Loss, Liability |  | $ 69,000 | $ 0 |
Accounting Standards Update 2016-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  |  | $ 14,100,000
Operating lease liabilities |  |  |  | $ 14,100,000
Accounting Standards Update 2016-13 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets |  | 717,000 |  |
Off-Balance Sheet, Credit Loss, Liability |  | $ 69,000 |  |

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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118956080&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82919202-210446 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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