SECURITIES - Aggreggate fair value and gross unrealized loss of securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Less Than 12 Months, Fair value
Available-for-sale
Municipal bonds		$ 479
Mortgage-backed securities	$ 5,754	15,914
Collateralized mortgage obligations, U.S. Government agencies		9,317
Collateralized mortgage obligations, Non-agency
SBA bonds	7,343	8,519
CRA mutual funds		835
Corporate bonds		1,491
Total temporarily impaired securities	13,097	36,555
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency		101
Total temporarily impaired and other-than-temporarily impaired securities	13,097	36,656
Less Than 12 Months, Unrealized losses
Available-for-sale
Municipal bonds		1
Mortgage-backed securities	40	99
Collateralized mortgage obligations, U.S. Government agencies		87
Collateralized mortgage obligations, Non-agency
SBA bonds	135	20
CRA mutual funds		16
Corporate bonds		9
Total temporarily impaired securities	175	232
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency		14
Total temporarily impaired and other-than-temporarily impaired securities	175	246
12 Months or Longer, Fair value
Available-for-sale
Municipal bonds
Mortgage-backed securities	19,973	17,892
Collateralized mortgage obligations, U.S. Government agencies	8,281
Collateralized mortgage obligations, Non-agency		77
SBA bonds	7,336
CRA mutual funds
Corporate bonds
Total temporarily impaired securities	35,590	17,969
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency
Total temporarily impaired and other-than-temporarily impaired securities	35,590	17,969
12 Months or Longer, Unrealized losses
Available-for-sale
Municipal bonds
Mortgage-backed securities	211	168
Collateralized mortgage obligations, U.S. Government agencies	173
Collateralized mortgage obligations, Non-agency		3
SBA bonds	178
CRA mutual funds
Corporate bonds
Total temporarily impaired securities	562	171
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency
Total temporarily impaired and other-than-temporarily impaired securities	562	171
Total, Fair value
Available-for-sale
Municipal bonds		479
Mortgage-backed securities	25,727	33,806
Collateralized mortgage obligations, U.S. Government agencies	8,281	9,317
Collateralized mortgage obligations, Non-agency		77
SBA bonds	14,679	8,519
CRA mutual funds		835
Corporate bonds		1,491
Total temporarily impaired securities	48,687	54,524
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency		101
Total temporarily impaired and other-than-temporarily impaired securities	48,687	54,625
Total, Unrealized losses
Available-for-sale
Municipal bonds		1
Mortgage-backed securities	251	267
Collateralized mortgage obligations, U.S. Government agencies	173	87
Collateralized mortgage obligations, Non-agency		3
SBA bonds	313	20
CRA mutual funds		16
Corporate bonds		9
Total temporarily impaired securities	737	403
Other than temporarily impaired securities, Collateralized mortgage obligations, Non-agency		14
Total temporarily impaired and other-than-temporarily impaired securities	$ 737	$ 417

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Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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-Topic 320
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Total of accumulated other comprehensive loss related to that portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized either as available-for-sale or held-to-maturity that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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- Definition

Investments in notes or bonds that are collateralized by a specific group of underlying assets owned by the issuer of the notes or bonds which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Amount of securities that are debt instruments (corporate or municipal bonds) that typically have long-term nominal maturities for which the interest rate is reset through an auction process.

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Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
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The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale.

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Bonds or similar securities issued by state, city, or local governments or the agencies operated by state, city, or local governments which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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