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INVESTMENT SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2018
Investments [Abstract] |
Schedule of Available for Sale and Held for Maturity Securities Reconciliation [Table Text Block] | The cost basis and fair values of investment securities are summarized as follows: Investment securities available for sale:
|  | AT DECEMBER 31, 2018 |
|  | COST BASIS |  |  | GROSS UNREALIZED GAINS |  |  | GROSS UNREALIZED LOSSES |  |  | FAIR VALUE |
|  | (IN THOUSANDS) |
U.S. Agency |  | $ | 7,685 |  |  | $ | 4 |  |  | $ | (160 | ) |  | $ | 7,529 |
Municipal |  |  | 13,301 |  |  |  | 114 |  |  |  | (234 | ) |  |  | 13,181 |
Corporate bonds |  |  | 37,359 |  |  |  | 131 |  |  |  | (996 | ) |  |  | 36,494 |
U.S. Agency mortgage-backed securities |  |  | 90,169 |  |  |  | 516 |  |  |  | (1,158 | ) |  |  | 89,527 |
Total |  | $ | 148,514 |  |  | $ | 765 |  |  | $ | (2,548 | ) |  | $ | 146,731 |
Investment securities held to maturity:
|  | AT DECEMBER 31, 2018 |
|  | COST BASIS |  |  | GROSS UNREALIZED GAINS |  |  | GROSS UNREALIZED LOSSES |  |  | FAIR VALUE |
|  | (IN THOUSANDS) |
U.S. Agency mortgage-backed securities |  | $ | 9,983 |  |  | $ | 78 |  |  | $ | (132 | ) |  | $ | 9,929 |
Municipal |  |  | 24,740 |  |  |  | 131 |  |  |  | (404 | ) |  |  | 24,467 |
Corporate bonds and other securities |  |  | 6,037 |  |  |  | 13 |  |  |  | (122 | ) |  |  | 5,928 |
Total |  | $ | 40,760 |  |  | $ | 222 |  |  | $ | (658 | ) |  | $ | 40,324 |
Investment securities available for sale:
|  | AT DECEMBER 31, 2017 |
|  | COST BASIS |  |  | GROSS UNREALIZED GAINS |  |  | GROSS UNREALIZED LOSSES |  |  | FAIR VALUE |
|  | (IN THOUSANDS) |
U.S. Agency |  | $ | 6,612 |  |  | $ | — |  |  | $ | (40 | ) |  | $ | 6,572 |
Municipal |  |  | 7,198 |  |  |  | 27 |  |  |  | (189 | ) |  |  | 7,036 |
Corporate bonds |  |  | 35,886 |  |  |  | 322 |  |  |  | (424 | ) |  |  | 35,784 |
U.S. Agency mortgage-backed securities |  |  | 79,854 |  |  |  | 611 |  |  |  | (719 | ) |  |  | 79,746 |
Total |  | $ | 129,550 |  |  | $ | 960 |  |  | $ | (1,372 | ) |  | $ | 129,138 |
Investment securities held to maturity:
|  | AT DECEMBER 31, 2017 |
|  | COST BASIS |  |  | GROSS UNREALIZED GAINS |  |  | GROSS UNREALIZED LOSSES |  |  | FAIR VALUE |
|  | (IN THOUSANDS) |
U.S. Agency mortgage-backed securities |  | $ | 9,740 |  |  | $ | 149 |  |  | $ | (45 | ) |  | $ | 9,844 |
Municipal |  |  | 22,970 |  |  |  | 203 |  |  |  | (238 | ) |  |  | 22,935 |
Corporate bonds and other securities |  |  | 6,042 |  |  |  | 38 |  |  |  | (48 | ) |  |  | 6,032 |
Total |  | $ | 38,752 |  |  | $ | 390 |  |  | $ | (331 | ) |  | $ | 38,811 |
Schedule of Contractual Maturities of Securities [Table Text Block] | Investment securities available for sale:
AT DECEMBER 31, 2018 |
|  | U. S. AGENCY |  |  | U.S. AGENCY MORTGAGE-BACKED SECURITIES |  |  | CORPORATE BONDS |  |  | MUNICIPAL |  | TOTAL INVESTMENT SECURITIES AVAILABLE FOR SALE |
(IN THOUSANDS, EXCEPT YIELDS) |
COST BASIS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year |  | $ | — |  |  |  | — | % |  | $ | 26 |  |  |  | 3.29 | % |  | $ | 1,000 |  |  |  | 2.69 | % |  | $ | — |  |  |  | — | % |  | $ | 1,026 |  |  |  | 2.71 | %
After 1 year but within 5 years |  |  | 2,400 |  |  |  | 2.91 |  |  |  | 1,334 |  |  |  | 1.86 |  |  |  | 15,656 |  |  |  | 3.80 |  |  |  | 1,987 |  |  |  | 2.86 |  |  |  | 21,377 |  |  |  | 3.49 |
After 5 years but within 10 years |  |  | 2,443 |  |  |  | 2.94 |  |  |  | 10,977 |  |  |  | 3.00 |  |  |  | 20,703 |  |  |  | 4.22 |  |  |  | 11,314 |  |  |  | 3.27 |  |  |  | 45,437 |  |  |  | 3.61 |
After 10 years but within 15 years |  |  | — |  |  |  | — |  |  |  | 27,295 |  |  |  | 2.82 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 27,295 |  |  |  | 2.82 |
Over 15 years |  |  | 2,842 |  |  |  | 2.69 |  |  |  | 50,537 |  |  |  | 2.97 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 53,379 |  |  |  | 2.96 |
Total |  | $ | 7,685 |  |  |  | 2.84 |  |  | $ | 90,169 |  |  |  | 2.91 |  |  | $ | 37,359 |  |  |  | 4.00 |  |  | $ | 13,301 |  |  |  | 3.21 |  |  | $ | 148,514 |  |  |  | 3.21 |
FAIR VALUE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year |  | $ | — |  |  |  |  |  |  | $ | 26 |  |  |  |  |  |  | $ | 995 |  |  |  |  |  |  | $ | — |  |  |  |  |  |  | $ | 1,021 |  |  |  |  |
After 1 year but within 5 years |  |  | 2,386 |  |  |  |  |  |  |  | 1,320 |  |  |  |  |  |  |  | 15,380 |  |  |  |  |  |  |  | 1,981 |  |  |  |  |  |  |  | 21,067 |  |  |  |  |
After 5 years but within 10 years |  |  | 2,401 |  |  |  |  |  |  |  | 10,986 |  |  |  |  |  |  |  | 20,119 |  |  |  |  |  |  |  | 11,200 |  |  |  |  |  |  |  | 44,706 |  |  |  |  |
After 10 years but within 15 years |  |  | — |  |  |  |  |  |  |  | 27,012 |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | 27,012 |  |  |  |  |
Over 15 years |  |  | 2,742 |  |  |  |  |  |  |  | 50,183 |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | 52,925 |  |  |  |  |
Total |  | $ | 7,529 |  |  |  |  |  |  | $ | 89,527 |  |  |  |  |  |  | $ | 36,494 |  |  |  |  |  |  | $ | 13,181 |  |  |  |  |  |  | $ | 146,731 |  |  |  |  |
Investment securities held to maturity:
|  | AT DECEMBER 31, 2018 |
|  | U.S. AGENCY MORTGAGE-BACKED SECURITIES |  |  | CORPORATE BONDS AND OTHER |  |  | MUNICIPAL |  | TOTAL INVESTMENT SECURITIES HELD TO MATURITY |
|  | (IN THOUSANDS, EXCEPT YIELDS) |
COST BASIS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year |  | $ | — |  |  |  | — | % |  | $ | 1,000 |  |  |  | 1.65 | % |  | $ | — |  |  |  | — | % |  | $ | 1,000 |  |  |  | 1.65 | %
After 1 year but within 5 years |  |  | 902 |  |  |  | 2.09 |  |  |  | 2,000 |  |  |  | 3.40 |  |  |  | 1,176 |  |  |  | 2.96 |  |  |  | 4,078 |  |  |  | 2.98 |
After 5 years but within 10 years |  |  | 1,127 |  |  |  | 2.82 |  |  |  | 3,037 |  |  |  | 4.40 |  |  |  | 15,477 |  |  |  | 3.38 |  |  |  | 19,641 |  |  |  | 3.51 |
After 10 years but within 15 years |  |  | 2,662 |  |  |  | 3.68 |  |  |  | — |  |  |  | — |  |  |  | 7,772 |  |  |  | 3.90 |  |  |  | 10,434 |  |  |  | 3.84 |
Over 15 years |  |  | 5,292 |  |  |  | 3.17 |  |  |  | — |  |  |  | — |  |  |  | 315 |  |  |  | 3.50 |  |  |  | 5,607 |  |  |  | 3.19 |
Total |  | $ | 9,983 |  |  |  | 3.17 |  |  | $ | 6,037 |  |  |  | 3.61 |  |  | $ | 24,740 |  |  |  | 3.52 |  |  | $ | 40,760 |  |  |  | 3.45 |
FAIR VALUE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within 1 year |  | $ | — |  |  |  |  |  |  | $ | 944 |  |  |  |  |  |  | $ | — |  |  |  |  |  |  | $ | 944 |  |  |  |  |
After 1 year but within 5 years |  |  | 882 |  |  |  |  |  |  |  | 1,982 |  |  |  |  |  |  |  | 1,171 |  |  |  |  |  |  |  | 4,035 |  |  |  |  |
After 5 years but within 10 years |  |  | 1,123 |  |  |  |  |  |  |  | 3,002 |  |  |  |  |  |  |  | 15,296 |  |  |  |  |  |  |  | 19,421 |  |  |  |  |
After 10 years but within 15 years |  |  | 2,702 |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | 7,706 |  |  |  |  |  |  |  | 10,408 |  |  |  |  |
Over 15 years |  |  | 5,222 |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  | 294 |  |  |  |  |  |  |  | 5,516 |  |  |  |  |
Total |  | $ | 9,929 |  |  |  |  |  |  | $ | 5,928 |  |  |  |  |  |  | $ | 24,467 |  |  |  |  |  |  | $ | 40,324 |  |  |  |  |
Schedule of Unrealized Loss on Investments [Table Text Block] | The following table presents information concerning investments with unrealized losses as of December 31, 2018 (in thousands):
Total investment securities: |  | LESS THAN 12 MONTHS |  |  | 12 MONTHS OR LONGER |  |  | TOTAL |
| FAIR VALUE |  |  | UNREALIZED LOSSES |  |  | FAIR VALUE |  |  | UNREALIZED LOSSES |  |  | FAIR VALUE |  |  | UNREALIZED LOSSES |
U.S. Agency |  | $ | 244 |  |  | $ | (6 | ) |  | $ | 5,631 |  |  | $ | (154 | ) |  | $ | 5,875 |  |  | $ | (160 | )
U.S. Agency mortgage-backed securities |  |  | 17,718 |  |  |  | (177 | ) |  |  | 39,983 |  |  |  | (1,113 | ) |  |  | 57,701 |  |  |  | (1,290 | )
Municipal |  |  | 6,601 |  |  |  | (71 | ) |  |  | 15,880 |  |  |  | (567 | ) |  |  | 22,481 |  |  |  | (638 | )
Corporate bonds and other securities |  |  | 15,221 |  |  |  | (440 | ) |  |  | 17,038 |  |  |  | (678 | ) |  |  | 32,259 |  |  |  | (1,118 | )
Total |  | $ | 39,784 |  |  | $ | (694 | ) |  | $ | 78,532 |  |  | $ | (2,512 | ) |  | $ | 118,316 |  |  | $ | (3,206 | )
The following table presents information concerning investments with unrealized losses as of December 31, 2017 (in thousands):
Total investment securities: |  | LESS THAN 12 MONTHS |  |  | 12 MONTHS OR LONGER |  |  | TOTAL |
| FAIR VALUE |  |  | UNREALIZED LOSSES |  |  | FAIR VALUE |  |  | UNREALIZED LOSSES |  |  | FAIR VALUE |  |  | UNREALIZED LOSSES |
U.S. Agency |  | $ | 5,923 |  |  | $ | (39 | ) |  | $ | 399 |  |  | $ | (1 | ) |  | $ | 6,322 |  |  | $ | (40 | )
U.S. Agency mortgage-backed securities |  |  | 36,783 |  |  |  | (253 | ) |  |  | 22,625 |  |  |  | (511 | ) |  |  | 59,408 |  |  |  | (764 | )
Municipal |  |  | 8,657 |  |  |  | (109 | ) |  |  | 7,727 |  |  |  | (318 | ) |  |  | 16,384 |  |  |  | (427 | )
Corporate bonds and other securities |  |  | 7,123 |  |  |  | (71 | ) |  |  | 13,655 |  |  |  | (401 | ) |  |  | 20,778 |  |  |  | (472 | )
Total |  | $ | 58,486 |  |  | $ | (472 | ) |  | $ | 44,406 |  |  | $ | (1,231 | ) |  | $ | 102,892 |  |  | $ | (1,703 | )

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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