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INVESTMENT SECURITIES -Summarized Credit Ratings and Collateral Associated with Investment Portfolio (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Book | $ 478,476 | $ 491,492
Fair Value | $ 478,288 | $ 490,885
Guaranteed by U.S. Government, percentage | 97.00% |
Guaranteed by U.S. Government Agencies, percentage | 100.00% |
Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 100.00% |
Amortized Book | $ 478,383 |
Fair Value | $ 478,194 |
Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 20.00% |
Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 60.00% |
Credit Rating, A, Lowest of S&P, Moody's and Fitch | Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 13.00% |
Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 1.00% |
Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Total Collateral |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 6.00% |
Unsecured ABS | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 2.00% |
Amortized Book | $ 8,239 |
Fair Value | $ 8,291 |
Credit Enhancement | 43.00% |
Unsecured ABS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 5.00% |
Unsecured ABS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Unsecured ABS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Unsecured ABS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Unsecured ABS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Unsecured Consumer Debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 95.00% |
Student Loan ABS | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 2.00% |
Amortized Book | $ 11,868 |
Fair Value | $ 11,636 |
Credit Enhancement | 26.00% |
Student Loan ABS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Student Loan ABS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Student Loan ABS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Student Loan ABS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Student Loan ABS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Seasoned Student Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |
Federal Family Education Loan ABS | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 38.00% |
Amortized Book | $ 181,639 |
Fair Value | $ 174,916 |
Credit Enhancement | 6.00% |
Federal Family Education Loan ABS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 4.00% |
Federal Family Education Loan ABS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 73.00% |
Federal Family Education Loan ABS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 23.00% |
Federal Family Education Loan ABS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Federal Family Education Loan ABS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Federal Family Education Loan |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
PACE Loan ABS | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 1.00% |
Amortized Book | $ 5,472 |
Fair Value | $ 5,551 |
Credit Enhancement | 6.00% |
PACE Loan ABS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |
PACE Loan ABS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
PACE Loan ABS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
PACE Loan ABS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
PACE Loan ABS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Pace Loans |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency CMBS | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 15.00% |
Amortized Book | $ 72,372 |
Fair Value | $ 69,209 |
Credit Enhancement | 55.00% |
Non-Agency CMBS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 87.00% |
Non-Agency CMBS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency CMBS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 3.00% |
Non-Agency CMBS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 10.00% |
Non-Agency CMBS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Commercial Real Estate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency RMBS | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 4.00% |
Amortized Book | $ 17,071 |
Fair Value | $ 17,162 |
Credit enhancement, percentage expected | 33.00% |
Non-Agency RMBS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |
Non-Agency RMBS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency RMBS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency RMBS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Non-Agency RMBS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Reverse Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Municipal - General Obligation | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 11.00% |
Amortized Book | $ 53,886 |
Fair Value | $ 58,640 |
Municipal - General Obligation | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 3.00% |
Municipal - General Obligation | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 85.00% |
Municipal - General Obligation | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 12.00% |
Municipal - General Obligation | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Municipal - General Obligation | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Municipal - Revenue | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 11.00% |
Amortized Book | $ 51,014 |
Fair Value | $ 54,067 |
Municipal - Revenue | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Municipal - Revenue | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 61.00% |
Municipal - Revenue | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 19.00% |
Municipal - Revenue | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Municipal - Revenue | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Uncollateralized |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 20.00% |
SBA ReRemic | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 2.00% |
Amortized Book | $ 11,830 |
Fair Value | $ 11,756 |
SBA ReRemic | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
SBA ReRemic | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |
SBA ReRemic | Credit Rating, A, Lowest of S&P, Moody's and Fitch | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
SBA ReRemic | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
SBA ReRemic | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | SBA Guarantee |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Agency MBS | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 14.00% |
Amortized Book | $ 64,743 |
Fair Value | $ 66,717 |
Agency MBS | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Agency MBS | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |
Agency MBS | Credit Rating, A, Lowest of S&P, Moody's and Fitch | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Agency MBS | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Agency MBS | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | Residential Mortgages |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Bank CDs | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Portfolio Mix | 0.00% |
Amortized Book | $ 249 |
Fair Value | $ 249 |
Bank CDs | Credit Rating, AAA, Lowest of S&P, Moody's and Fitch | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Bank CDs | Credit Rating, AA, Lowest of S&P, Moody's and Fitch | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Bank CDs | Credit Rating, A, Lowest of S&P, Moody's and Fitch | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Bank CDs | Credit Rating, BBB, Lowest of S&P, Moody's and Fitch | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 0.00% |
Bank CDs | Credit Rating, NR, Lowest of S&P, Moody's and Fitch | FDIC |  |
Debt Securities, Available-for-sale [Line Items] |  |
Credit rating, percentage | 100.00% |

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