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Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deposits, by Type [Abstract]
Noninterest-bearing Deposit Liabilities	$ 480,283	$ 471,206
Interest-bearing Domestic Deposit, Demand	700,376	716,204
Interest-bearing Domestic Deposit, Savings	359,065	356,740
Interest-bearing Domestic Deposit, Money Market	390,880	432,656
Interest-bearing Domestic Deposit, Time Deposits	344,035	353,081
Total deposits	2,274,639	2,329,887
Time Deposits, $100,000 or More	167,073	151,262	$ 88,855
Interest expense for the year	730	423	$ 493
Maturities of Time Deposits [Abstract]
Time Deposit Maturities, Next Twelve Months	224,622
Time Deposit Maturities, Year Two	55,529
Time Deposit Maturities, Year Three	35,529
Time Deposit Maturities, Year Four	15,568
Time Deposit Maturities, Year Five	11,914
Time Deposit Maturities, after Year Five	873
Time Deposits	344,035
Total of Public entitiy balances	$ 100,828	$ 146,100

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Total balance of Public entities with large balances

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03.12)
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Amount of money in interest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.

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Amount of interest-bearing domestic money market demand account deposit liabilities.

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Amount of interest-bearing domestic savings deposit liabilities. Saving deposits bear interest and have no stated maturity.

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Amount of interest-bearing domestic time deposits. Time deposits bear interest for a fixed, stated period of time and include certificate of deposits and individual retirement accounts.

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Interest expense incurred on time deposits, including certificates of deposits, of $100,000 or more in domestic offices.

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Amount of time deposits maturing after the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the fourth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the third fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the second fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

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