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Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 07, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	NEW YORK MORTGAGE TRUST INC
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		111,854,023
Amendment Flag	false
Entity Central Index Key	0001273685
Entity Filer Category	Large Accelerated Filer
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation 12B
-Number 240
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-Subsection 1

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