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FAIR VALUES OF FINANCIAL INSTRUMENTS: (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Total realized/unrealized gains or losses |  |
Beginning balance, January 1 | $ 6,393 | $ 18,285
Included in earnings | 0 | 0
Included in other comprehensive income | 498 | (2,840)
Purchases | 0 | 0
Settlements | (707) | (9,052)
Ending balance, December 31 | 6,184 | 6,393
State and municipal obligations |  |
Total realized/unrealized gains or losses |  |
Beginning balance, January 1 | 3,135 | 3,680
Included in earnings | 0 | 0
Included in other comprehensive income | 0 |
Purchases | 0 | 0
Settlements | (570) | (545)
Ending balance, December 31 | 2,565 | 3,135
Collateralized debt obligations |  |
Total realized/unrealized gains or losses |  |
Beginning balance, January 1 | 3,258 | 14,605
Included in earnings | 0 | 0
Included in other comprehensive income | 498 | (2,840)
Settlements | (137) | (8,507)
Ending balance, December 31 | $ 3,619 | $ 3,258

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