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Other-Than-Temporary Impairment Analysis
 12 Months Ended
Dec. 31, 2019
Other than Temporary Impairment Losses, Investments [Abstract]  
Other-Than-Temporary Impairment [Text Block] Other-Than-Temporary Impairment

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for OTTI on a quarterly basis. As part of its evaluation of securities for OTTI, the Bank considers its intent to sell each debt security and whether it is more likely than not that it will be required to sell the security before its anticipated recovery. If either of these conditions is met, the Bank will recognize an OTTI charge to earnings equal to the entire difference between the security’s amortized cost basis and its fair value at the reporting date. For securities in an unrealized loss position that meet neither of these conditions, the Bank performs analyses to determine if any of these securities are other-than-temporarily impaired. The analysis of the Bank’s AFS and HTM investment securities in an unrealized loss position at December 31, 2019 is discussed below:

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Other U.S. obligations and GSE obligations. The strength of the issuers’ guarantees through direct obligations or support from the U.S. Government was sufficient to protect the Bank from losses based on current expectations. The Bank expects to recover the amortized cost bases on these securities and neither intends to sell these securities nor considers it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at December 31, 2019.

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State or local housing agency obligations. The creditworthiness of the issuers and the strength of the underlying collateral and credit enhancements were sufficient to protect the Bank from losses based on current expectations. The Bank does not intend to sell these securities nor is it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at December 31, 2019.

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Private-label mortgage-backed securities. On a quarterly basis, the Bank engages other designated FHLBanks to perform cash flow analyses on its private-label MBS. As of December 31, 2019, the Bank compared the present value of cash flows expected to be collected with respect to its private-label MBS to the amortized cost bases of the securities to determine whether a credit loss existed. At December 31, 2019, the Bank’s cash flow analyses for private-label MBS did not project any credit losses. The Bank does not intend to sell its private-label MBS nor is it more likely than not that the Bank will be required to sell its private-label MBS before recovery of their amortized cost bases. As a result, the Bank did not consider any of its private-label MBS to be other-than-temporarily impaired at December 31, 2019.