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Unused Available Lines of Credit (Details) $ in Thousands | Dec. 31, 2018 USD ($)
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Unsecured Debt [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | $ 83,000
Unsecured Debt [Member] | US Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 20,000
Unsecured Debt [Member] | UMB Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 20,000
Unsecured Debt [Member] | Wells Fargo Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 15,000
Unsecured Debt [Member] | PNC Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 12,000
Unsecured Debt [Member] | Frost National Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 10,000
Unsecured Debt [Member] | JPM Chase Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 6,000
Secured Debt [Member] | UMB Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 50,000
Secured Debt [Member] | Federal Home Loan Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | 193,460
Secured Debt [Member] | First Tennessee Bank [Member] |
Line of Credit Facility [Line Items] |
Line of credit amount | $ 50,000

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Balance Type: |
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- Details
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Balance Type: |
Period Type: |

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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
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- Details
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Balance Type: |
Period Type: |

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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |