Trading Securities (Tables)

12 Months Ended

Dec. 31, 2019

Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]

Trading Securities by Major Security Type [Table Text Block]

Table 5.1 - Trading Securities by Major Security Type (dollars in thousands)
	December 31, 2019		December 31, 2018
Corporate bonds	$	5,896	$	6,102
U.S. Treasury obligations	2,240,236		—
	2,246,132		6,102
MBS
U.S. government-guaranteed – single-family	4,047		5,344
GSE – single-family	85		148
GSE – multifamily	—		151,444
	4,132		156,936
Total	$	2,250,264	$	163,038

Gain (Loss) on Securities [Table Text Block]

Table 5.2 - Unrealized and Realized Gains (Losses) on Trading Securities (dollars in thousands)
	For the Year Ended December 31,
	2019			2018			2017
Net unrealized gains (losses) on trading securities held at year end	$	1,379		$	(4,515	)	$	(6,145	)
Net unrealized and realized gains on trading securities sold or matured during the year	(92		)	—			67
Net unrealized gains (losses) on trading securities	$	1,287		$	(4,515	)	$	(6,078	)