XML 29 R13.htm IDEA: XBRL DOCUMENT v3.20.4
Federal Home Loan Bank and Federal Reserve Bank Stocks
 12 Months Ended
Dec. 31, 2020
Federal Home Loan Banks [Abstract]  
Federal Home Loan Bank and Federal Reserve Bank Stocks Federal Home Loan Bank and Federal Reserve Bank Stocks
Federal Home Loan Bank ("FHLB") and Federal Reserve Bank ("FRB") stocks were as follows:

At December 31,
(In thousands)20202019
FHLB stock, at cost$196,457 $318,473 
FRB stock, at cost123,979 123,967 
Total investments$320,436 $442,440 
The investments in FHLB stock are required investments related to the Corporation's membership and borrowings from the FHLB of Des Moines, and additional commitments from the FHLB of Indianapolis and Cincinnati. The Corporation's investments in the FHLB of Des Moines, Indianapolis and Cincinnati could be adversely impacted by the financial operations of the Federal Home Loan Banks and actions of their regulator, the Federal Housing Finance Agency. The amount of FRB stock that TCF Bank is required to hold is based on TCF Bank's capital structure. The Corporation periodically evaluates investments for impairment. There was no impairment of these investments in 2020, 2019 and 2018.