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Related Party Transactions (Details Textual) | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) Investment | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Related Party Transactions (Textual) |  |  |
Number of offices | Investment | 4 |  |
Executive officer and directors [Member] |  |  |
Related Party Transactions (Textual) |  |  |
Deposits by related parties | $ 3,500,000 | $ 6,300,000 |
Director [Member] |  |  |
Related Party Transactions (Textual) |  |  |
Monthly payments of land lease by Company | 5,388 |  |
Property management services expense for Bank | 38,000 | $ 29,000 | $ 31,000
Payment for employment recruiting services | $ 87,000 |  |

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- Definition Number of offices. + References No definition available. + Details
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Balance Type: | na
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- Definition The amount of expense derived from property management services. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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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- Definition This element represents the cost of generating revenues attributable to a hotel's, or cruise line's, owned retail store operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Details
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- Details
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