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Related Party Transactions (Details Textual) | 12 Months Ended
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Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) Offices | Dec. 31, 2016 USD ($)
Related Party Transactions (Textual) |  |  |
Number of offices | Offices |  | 4 |
Executive officer and directors [Member] |  |  |
Related Party Transactions (Textual) |  |  |
Deposits by related parties | $ 2,700,000 | $ 3,500,000 |
Director [Member] |  |  |
Related Party Transactions (Textual) |  |  |
Monthly payments of land lease by Company | 5,388 |  |
Property management services expense for Bank | 21,000 | $ 38,000 | $ 29,000
Payment for employment recruiting services | $ 38,000 |  |

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- Definition Number of offices. + References No definition available. + Details
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- Definition The amount of expense derived from property management services. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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- Definition Amount of deposits held by the entity for a related party (entity, shareholder, employee). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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