SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2018 |
Jun. 30, 2015 |
Dec. 31, 2017 |
|
| Schedule of Held-to-maturity Securities [Line Items] | |||
| Total securities held to maturity | $ 198,733 | $ 199,639 | |
| Estimated Fair Value | 199,904 | 203,483 | |
| Held to maturity securities unrealized gains before tax | 3,200 | $ 8,100 | 3,600 |
| Obligations of States and Political Subdivisions | |||
| Schedule of Held-to-maturity Securities [Line Items] | |||
| Total securities held to maturity | 198,733 | 199,639 | |
| Gross Unrealized Gains | 1,540 | 4,014 | |
| Gross Unrealized (Losses) | (369) | (170) | |
| Estimated Fair Value | $ 199,904 | $ 203,483 | |
| X | ||||||||||
- Definition Held To Maturity Securities Unrealized Gains Before Tax No definition available.
|
| X | ||||||||||
- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Fair value of investments in debt securities classified as held-to-maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|