TWO Quarterly report pursuant to Section 13 or 15(d)

Available-for-sale Securities, Rollforward of the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	$ (14,238)
Additions on securities for which credit losses were not previously recorded	(2)	$ (20)
Increase (decrease) on securities with previously recorded credit losses	(1,112)	1,155
Writeoffs	3,779	3,223
Allowance for credit losses at end of period	(11,573)	(18,170)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	(12,851)
Additions on securities for which credit losses were not previously recorded	(2)	(20)
Increase (decrease) on securities with previously recorded credit losses	(2,493)	(1,840)
Writeoffs	3,779	3,050
Allowance for credit losses at end of period	(11,567)	(16,699)
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	(1,387)
Additions on securities for which credit losses were not previously recorded	0	0
Increase (decrease) on securities with previously recorded credit losses	1,381	2,995
Writeoffs	0	173
Allowance for credit losses at end of period	$ (6)	$ (1,471)