EMPLOYEE BENEFIT PLANS, Noncontributory Defined Benefit Pension Plan Fair Value of Plan Assets (Details) - Pension Plan [Member] - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 19,992,000	$ 15,786,000
Allocation	100.00%	100.00%
Expected employer contribution to pension plan	$ 0
Expected future benefit payments [Abstract]
2018	629,000
2019	1,896,000
2020	1,599,000
2021	1,421,000
2022	843,000
2023 - 2027	7,805,000
Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	15,935,000	$ 11,502,000
Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	4,057,000	4,284,000
Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Cash and Cash Equivalents [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 3,827,000	$ 863,000
Allocation	19.10%	5.50%
Cash and Cash Equivalents [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 3,827,000	$ 863,000
Cash and Cash Equivalents [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Cash and Cash Equivalents [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Equity Securities [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 6,018,000	$ 5,404,000
Allocation	30.10%	34.10%
Equity Securities [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 6,018,000	$ 5,404,000
Equity Securities [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Equity Securities [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0	0
Equity Securities [Member] \| Minimum [Member]
Target Allocations of Assets [Abstract]
Target plan asset allocations	50.00%
Equity Securities [Member] \| Maximum [Member]
Target Allocations of Assets [Abstract]
Target plan asset allocations	70.00%
Mutual Funds and ETF's [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 6,090,000	$ 5,235,000
Allocation	30.50%	33.20%
Mutual Funds and ETF's [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 6,090,000	$ 5,235,000
Mutual Funds and ETF's [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Mutual Funds and ETF's [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Corporate Bonds [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 3,469,000	$ 3,641,000
Allocation	17.40%	23.10%
Corporate Bonds [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0	$ 0
Corporate Bonds [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	3,469,000	3,641,000
Corporate Bonds [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0	0
Corporate Bonds [Member] \| Minimum [Member]
Target Allocations of Assets [Abstract]
Target plan asset allocations	30.00%
Corporate Bonds [Member] \| Maximum [Member]
Target Allocations of Assets [Abstract]
Target plan asset allocations	50.00%
Municipal Bonds [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 105,000	$ 107,000
Allocation	0.50%	0.70%
Municipal Bonds [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 105,000	$ 107,000
U.S. Agency Securities [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 483,000	$ 536,000
Allocation	2.40%	3.40%
U.S. Agency Securities [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0	$ 0
U.S. Agency Securities [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	483,000	536,000
U.S. Agency Securities [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0	0
Certificates of Deposit [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0
Allocation	0.00%
Certificates of Deposit [Member] \| Level I [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 0
Certificates of Deposit [Member] \| Level II [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0
Certificates of Deposit [Member] \| Level III [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	0
Common Stock [Member]
Plan assets at fair value [Abstract]
Fair value of plan assets	$ 684,000	$ 548,000
Allocation	3.40%	3.50%

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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-Subparagraph (SX 210.7-03(a)(10))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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