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Transactions With Related Parties (Narrative) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Member Of Board Of Directors , Retired [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | $ 499,000 | $ 443,000 | $ 133,000
Son Of Member Of Board Of Directors [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | 1,100,000 | 745,000 | $ 793,000
Member Of Board Of Directors Joining 2018 [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | $ 341,000 | $ 296,000 |

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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=116637345&loc=SL114874292-224272 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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