Organization	12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization New York Mortgage Trust, Inc., together with its consolidated subsidiaries ("NYMT," "we," "our," or the “Company"), is a real estate investment trust, or REIT, in the business of acquiring, investing in, financing and managing mortgage-related and residential housing-related assets. Our objective is to deliver long-term stable distributions to our stockholders over changing economic conditions through a combination of net interest margin and net realized capital gains from a diversified investment portfolio. Our investment portfolio includes (i) structured multi-family property investments such as multi-family CMBS and preferred equity in, and mezzanine loans to, owners of multi-family properties, (ii) residential mortgage loans, including distressed residential mortgage loans, non-QM loans, second mortgages, and other residential mortgage loans, (iii) non-Agency RMBS, (iv) Agency RMBS and (v) certain other mortgage-related and residential housing-related assets. The Company conducts its business through the parent company, New York Mortgage Trust, Inc., and several subsidiaries, including special purpose subsidiaries established for residential loan, distressed residential loan and CMBS securitization purposes, taxable REIT subsidiaries ("TRSs") and qualified REIT subsidiaries ("QRSs"). The Company consolidates all of its subsidiaries under generally accepted accounting principles in the United States of America (“GAAP”). The Company is organized and conducts its operations to qualify as a REIT for U.S. federal income tax purposes. As such, the Company will generally not be subject to federal income taxes on that portion of its income that is distributed to stockholders if it distributes at least 90% of its REIT taxable income to its stockholders by the due date of its federal income tax return and complies with various other requirements.

Organization

New York Mortgage Trust, Inc., together with its consolidated subsidiaries ("NYMT," "we," "our," or the “Company"), is a real estate investment trust, or REIT, in the business of acquiring, investing in, financing and managing mortgage-related and residential housing-related assets. Our objective is to deliver long-term stable distributions to our stockholders over changing economic conditions through a combination of net interest margin and net realized capital gains from a diversified investment portfolio. Our investment portfolio includes (i) structured multi-family property investments such as multi-family CMBS and preferred equity in, and mezzanine loans to, owners of multi-family properties, (ii) residential mortgage loans, including distressed residential mortgage loans, non-QM loans, second mortgages, and other residential mortgage loans, (iii) non-Agency RMBS, (iv) Agency RMBS and (v) certain other mortgage-related and residential housing-related assets.

The Company conducts its business through the parent company, New York Mortgage Trust, Inc., and several subsidiaries, including special purpose subsidiaries established for residential loan, distressed residential loan and CMBS securitization purposes, taxable REIT subsidiaries ("TRSs") and qualified REIT subsidiaries ("QRSs"). The Company consolidates all of its subsidiaries under generally accepted accounting principles in the United States of America (“GAAP”).

The Company is organized and conducts its operations to qualify as a REIT for U.S. federal income tax purposes. As such, the Company will generally not be subject to federal income taxes on that portion of its income that is distributed to stockholders if it distributes at least 90% of its REIT taxable income to its stockholders by the due date of its federal income tax return and complies with various other requirements.