Short-term Borrowings and Long-term FHLB Advances - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances [Line Items]
Federal home loan bank stock	$ 14,530	$ 20,083
FHLB maximum borrowing capacity	1,530,000
FHLB unused borrowing capacity	1,250,000
Overnight Federal Funds
Federal Home Loan Bank, Advances [Line Items]
FHLB unused borrowing capacity	79,000
Federal Reserve Discount Window
Federal Home Loan Bank, Advances [Line Items]
FHLB unused borrowing capacity	$ 140,400

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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