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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 12 Months Ended
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Dec. 31, 2018
Partners' Capital, Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table presents the changes in each component of accumulated other comprehensive loss, net of tax, for the periods ending December 31, 2018, 2017, and 2016 (in thousands):
|  | YEAR ENDING DECEMBER 31, 2018 |  |  | YEAR ENDING DECEMBER 31, 2017 |  |  | YEAR ENDING DECEMBER 31, 2016 |
|  | Net Unrealized Gains and Losses on Investment Securities AFS (1) |  |  | Defined Benefit Pension Items (1) |  |  | Total (1) |  |  | Net Unrealized Gains and Losses on Investment Securities AFS (1) |  |  | Defined Benefit Pension Items (1) |  |  | Total (1) |  |  | Net Unrealized Gains and Losses on I nvestment Securities AFS (1) |  |  | Defined Benefit Pension Items (1) |  |  | Total (1) |
Beginning balance |  | $ | (327 | ) |  | $ | (12,623 | ) |  | $ | (12,950 | ) |  | $ | (171 | ) |  | $ | (11,406 | ) |  | $ | (11,577 | ) |  | $ | 808 |  |  | $ | (8,363 | ) |  | $ | (7,555 | )
Reclassification of certain income tax effects from accumulated other comprehensive loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (53 | ) |  |  | (2,078 | ) |  |  | (2,131 | ) |  |  | — |  |  |  | — |  |  |  | — |
Other comprehensive income (loss) before reclassifications |  |  | (1,429 | ) |  |  | (1,416 | ) |  |  | (2,845 | ) |  |  | (27 | ) |  |  | 1,071 |  |  |  | 1,044 |  |  |  | (862 | ) |  |  | (3,563 | ) |  |  | (4,425 | )
Amounts reclassified from accumulated other comprehensive loss |  |  | 347 |  |  |  | 1,223 |  |  |  | 1,570 |  |  |  | (76 | ) |  |  | (210 | ) |  |  | (286 | ) |  |  | (117 | ) |  |  | 520 |  |  |  | 403 |
Net current period other comprehensive loss |  |  | (1,082 | ) |  |  | (193 | ) |  |  | (1,275 | ) |  |  | (156 | ) |  |  | (1,217 | ) |  |  | (1,373 | ) |  |  | (979 | ) |  |  | (3,043 | ) |  |  | (4,022 | )
Ending balance |  | $ | (1,409 | ) |  | $ | (12,816 | ) |  | $ | (14,225 | ) |  | $ | (327 | ) |  | $ | (12,623 | ) |  | $ | (12,950 | ) |  | $ | (171 | ) |  | $ | (11,406 | ) |  | $ | (11,577 | )
| (1) | Amounts in parentheses indicate debits on the Consolidated Balance Sheets.
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table presents the amounts reclassified out of each component of accumulated other comprehensive loss for the periods ending December 31, 2018, 2017, and 2016 (in thousands):
|  | Amount reclassified from accumulated other comprehensive loss (1) |  |  |  |
Details about accumulated other comprehensive loss components |  | YEAR ENDING DECEMBER 31, 2018 |  |  | YEAR ENDING DECEMBER 31, 2017 |  |  | YEAR ENDING DECEMBER 31, 2016 |  |  | Affected line item in the statement of operations |
Realized (gains) losses on sale of securities |  | $ | 439 |  |  | $ | (115 | ) |  | $ | (177 | ) |  |  | Net realized (gains) losses on investment securities |
|  |  | (92 | ) |  |  | 39 |  |  |  | 60 |  |  |  | Provision for income taxes |
|  | $ | 347 |  |  | $ | (76 | ) |  | $ | (117 | ) |  |  | Net of tax |
Amortization of estimated defined benefit pension plan loss (2) |  | $ | 1,548 |  |  | $ | (318 | ) |  | $ | 788 |  |  |  | Other expense |
|  |  | (325 | ) |  |  | 108 |  |  |  | (268 | ) |  |  | Provision for income taxes |
|  | $ | 1,223 |  |  | $ | (210 | ) |  | $ | 520 |  |  |  | Net of tax |
Total reclassifications for the period |  | $ | 1,570 |  |  | $ | (286 | ) |  | $ | 403 |  |  |  | Net income |
| (1) | Amounts in parentheses indicate credits.
| (2) | These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost (see Note 17 for additional details).

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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