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EMPLOYEE BENEFIT PLANS (Tables) | 9 Months Ended
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Sep. 30, 2019
Retirement Benefits [Abstract] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | The components of net periodic pension cost consisted of the following for the periods set forth below (amounts in thousands):
| Three months ended |  | Nine months ended
| September 30, |  | September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Service cost | $ | 228 |  |  | $ | 169 |  |  | $ | 658 |  |  | $ | 447 |
Interest cost | 1,075 |  |  | 1,056 |  |  | 3,304 |  |  | 3,237 |
Expected return on assets | (1,186 | ) |  | (1,487 | ) |  | (3,563 | ) |  | (4,470 | )
Amortization of unrecognized prior service cost | 56 |  |  | 50 |  |  | 169 |  |  | 150 |
Amortization of net unrecognized loss | 766 |  |  | 682 |  |  | 2,296 |  |  | 2,048 |
Net periodic pension cost | $ | 939 |  |  | $ | 470 |  |  | $ | 2,864 |  |  | $ | 1,412 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + Details
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