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SECURITIES - Securities Available for Sale (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | $ 288,279,000 |  | $ 297,947,000
Unrealized Gains | 147,000 |  | 514,000
Unrealized Losses | 9,442,000 |  | 5,370,000
Estimated Fair Value | 278,984,000 |  | 293,091,000
Amortized Cost [Abstract] |  |  |
Within one year | 18,365,000 |  |
After one, but within five years | 19,992,000 |  |
After five, but within ten years | 28,720,000 |  |
After ten years | 839,000 |  |
Total | 67,916,000 |  |
Fair Value [Abstract] |  |  |
Within one year | 18,350,000 |  |
After one, but within five years | 19,911,000 |  |
After five, but within ten years | 28,245,000 |  |
After ten years | 811,000 |  |
Total | 67,317,000 |  |
Estimated Fair Value | 278,984,000 |  | 293,091,000
Proceeds from maturities and principal collected on securities held to maturity | 0 | $ 0 |
Obligations of U.S. Government and U.S. Government sponsored enterprises |  |  |
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | 15,490,000 |  | 15,492,000
Unrealized Gains | 15,000 |  | 20,000
Unrealized Losses | 54,000 |  | 21,000
Estimated Fair Value | 15,451,000 |  | 15,491,000
Fair Value [Abstract] |  |  |
Estimated Fair Value | 15,451,000 |  | 15,491,000
Mortgage-backed securities, residential |  |  |
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | 216,489,000 |  | 224,939,000
Unrealized Gains | 87,000 |  | 136,000
Unrealized Losses | 8,757,000 |  | 5,166,000
Estimated Fair Value | 207,819,000 |  | 219,909,000
Amortized Cost [Abstract] |  |  |
Without single maturity date | 216,489,000 |  |
Fair Value [Abstract] |  |  |
Without single maturity date | 207,819,000 |  |
Estimated Fair Value | 207,819,000 |  | 219,909,000
Obligations of states and political subdivisions |  |  |
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | 52,177,000 |  | 52,928,000
Unrealized Gains | 44,000 |  | 355,000
Unrealized Losses | 604,000 |  | 151,000
Estimated Fair Value | 51,617,000 |  | 53,132,000
Fair Value [Abstract] |  |  |
Estimated Fair Value | 51,617,000 |  | 53,132,000
Corporate bonds and notes |  |  |
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | 249,000 |  | 249,000
Unrealized Gains | 0 |  | 2,000
Unrealized Losses | 0 |  | 0
Estimated Fair Value | 249,000 |  | 251,000
Fair Value [Abstract] |  |  |
Estimated Fair Value | 249,000 |  | 251,000
SBA loan pools |  |  |
Amortized cost and estimated fair value of securities available for sale [Abstract] |  |  |
Amortized Cost | 3,874,000 |  | 4,339,000
Unrealized Gains | 1,000 |  | 1,000
Unrealized Losses | 27,000 |  | 32,000
Estimated Fair Value | 3,848,000 |  | 4,308,000
Amortized Cost [Abstract] |  |  |
Without single maturity date | 3,874,000 |  |
Fair Value [Abstract] |  |  |
Without single maturity date | 3,848,000 |  |
Estimated Fair Value | $ 3,848,000 |  | $ 4,308,000

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 + Details
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