Statements of Condition (Parenthetical) - USD ($) shares in Thousands, $ in Thousands		Jun. 30, 2017		Dec. 31, 2016
Held-to-maturity Securities Pledged as Collateral		$ 0		$ 0
Advances, Fair Value Disclosure	[1]	$ 15,063		$ 15,093
Common Stock, Par or Stated Value Per Share		$ 100		$ 100
Common Stock, Shares, Issued		42,197		41,569
Common Stock, Shares, Outstanding		42,197		41,569
Held-to-maturity Securities, Fair Value		$ 14,634,113		$ 14,413,231
Consolidated Obligation Bonds [Member]
Consolidated Obligations, Bonds		5,605,291		7,895,510
Fair Value
Held-to-maturity Securities, Fair Value		14,634,113		14,413,231
Fair Value | Consolidated Obligation Bonds [Member]
Consolidated Obligations, Bonds		$ 53,513,451	[2]	$ 53,278,571	[3]

[1] At June 30, 2017 and December 31, 2016, none of the Advances were 90 days or more past due or had been placed on non-accrual status.

[2] Includes (in thousands) $5,605,291 of Consolidated Obligation Bonds recorded under the fair value option at June 30, 2017.

[3] Includes (in thousands) $7,895,510 of Consolidated Obligation Bonds recorded under the fair value option at December 31, 2016.