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FANNIE MAE COMMITMENTS AND PLEDGED SECURITIES - Pledged Securities at Fair Value (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Pledged cash and cash equivalents        
Restricted cash $ 3,029 $ 2,201 $ 4,358 $ 1,155
Money market funds 6,440 86,584 78,384 68,829
Total pledged cash and cash equivalents 9,469 88,785 82,742 69,984
Agency debt securities 106,862 9,074 2,108 2,206
Pledged securities, at fair value $ 116,331 $ 97,859 $ 84,850 $ 72,190