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Residential Mortgage Loans Held in Securitization Trusts, Net and Real Estate Owned (Tables) | 12 Months Ended
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Dec. 31, 2017
Mortgage Loans on Real Estate [Abstract] |
Schedule of Residential Mortgage Loans Held in Securitization Trusts (Net) | Residential mortgage loans held in securitization trusts, net consist of the following at December 31, 2017 and December 31, 2016, respectively (dollar amounts in thousands):
| December 31, 2017 |  | December 31, 2016
Unpaid principal balance | $ | 77,519 |  |  | $ | 98,303 |
Deferred origination costs – net | 492 |  |  | 623 |
Reserve for loan losses | (4,191 | ) |  | (3,782 | )
Total | $ | 73,820 |  |  | $ | 95,144 |
Reconciliation of Allowance for Loan Losses | The following table presents the activity in the Company's allowance for loan losses on residential mortgage loans held in securitization trusts for the years ended December 31, 2017, 2016 and 2015, respectively (dollar amounts in thousands):
| Years Ended December 31,
| 2017 |  | 2016 |  | 2015
Balance at beginning of period | $ | 3,782 |  |  | $ | 3,399 |  |  | $ | 3,631 |
Provisions for loan losses | 475 |  |  | 612 |  |  | 1,161 |
Transfer to real estate owned | (6 | ) |  | (117 | ) |  | — |
Charge-offs | (60 | ) |  | (112 | ) |  | (1,393 | )
Balance at the end of period | $ | 4,191 |  |  | $ | 3,782 |  |  | $ | 3,399 |
Reconciliation of Real Estate Owned Held in Residential Securitization Trusts | The following table presents the activity in the Company’s real estate owned held in residential securitization trusts for the years ended December 31, 2017, 2016 and 2015, respectively (dollar amounts in thousands):
| December 31, 2017 |  | December 31, 2016 |  | December 31, 2015
Balance at beginning of period | $ | 150 |  |  | $ | 411 |  |  | $ | 965 |
Write downs | — |  |  | (9 | ) |  | — |
Transfer from mortgage loans held in securitization trusts | 111 |  |  | 352 |  |  | — |
Disposal | (150 | ) |  | (604 | ) |  | (554 | )
Balance at the end of period | $ | 111 |  |  | $ | 150 |  |  | $ | 411 |
Delinquencies in Portfolio of Residential Mortgage Loans Held in Securitization Trusts | The table below shows delinquencies in our portfolio of residential mortgage loans held in securitization trusts, including REO through foreclosure, as of December 31, 2016 (dollar amounts in thousands): December 31, 2016
Days Late | Number of Delinquent Loans |  | Total Unpaid Principal |  | % of Loan Portfolio
30 - 60 | 1 |  | $ | 247 |  |  | 0.25 | %
61 - 90 | — |  | $ | — |  |  | — |
90+ | 30 |  | $ | 18,416 |  |  | 18.68 | %
Real estate owned through foreclosure | 1 |  | $ | 268 |  |  | 0.27 | %
The table below shows delinquencies in our portfolio of residential mortgage loans held in securitization trusts, including real estate owned (REO) through foreclosure, as of December 31, 2017 (dollar amounts in thousands): December 31, 2017
Days Late | Number of Delinquent Loans |  | Total Unpaid Principal |  | % of Loan Portfolio
30 - 60 | 1 |  | $ | 203 |  |  | 0.26 | %
61 - 90 | 1 |  | $ | 173 |  |  | 0.22 | %
90+ | 24 |  | $ | 16,147 |  |  | 20.80 | %
Real estate owned through foreclosure | 1 |  | $ | 118 |  |  | 0.15 | %
Schedule of Geographic Concentration Risk Exceeding 5% | The geographic concentrations of credit risk exceeding 5% of the total loan balances in our residential mortgage loans held in securitization trusts and REO held in residential securitization trusts at December 31, 2017 and December 31, 2016 are as follows:
| December 31, 2017 |  | December 31, 2016
New York | 31.8 | % |  | 33.8 | %
Massachusetts | 20.7 | % |  | 19.9 | %
New Jersey | 11.9 | % |  | 10.8 | %
Florida | 8.8 | % |  | 8.9 | %
Connecticut | 7.3 | % |  | 7.4 | %
Maryland | 5.2 | % |  | 5.1 | %
The geographic concentrations of credit risk exceeding 5% of the unpaid principal balance of residential mortgage loans at fair value as of December 31, 2017 and December 31, 2016, respectively, are as follows:
| December 31, 2017 |  | December 31, 2016
California | 35.9 | % |  | 63.3 | %
New Jersey | 7.7 | % |  | 2.5 | %
Florida | 6.6 | % |  | 5.6 | %

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