Note 5 - Cash, Cash Equivalents and Restricted Cash	6 Months Ended
Jun. 30, 2022
Notes to Financial Statements
Cash and Cash Equivalents Disclosure [Text Block]	*5. Cash, Cash Equivalents and Restricted Cash* The Company manages its cash and cash equivalents based upon the Company’s operating, investment, and financing activities. Cash and cash equivalents, including for purposes of reporting cash flows, consist of cash on hand, amounts due from banks, and short-term investments with original maturity of three months or less. The Company is required to maintain reserves with the Federal Reserve Bank. On December 7, 2020, the Federal Reserve Bank announced they were reducing the reserve requirement ratio to zero percent across all deposit tiers as of March 26, 2020. There were zero average reserve balances required as of June 30, 2022 or for the year ended December 31, 2021. The average excess balance with Federal Reserve Bank was $1.4 billion as of June 30, 2022 and $1.6 billion for the year ended December 31, 2021. As of June 30, 2022 and December 31, 2021, the Company had zero and $24.3 million, respectively, on deposit in a cash margin account that serves as collateral for interest rate swaps. These amounts included zero and $5.9 million as of June 30, 2022 and December 31, 2021, respectively, on deposit in a cash margin account that serves as collateral for the Bancorp’s interest rate swaps. As of June 30, 2022 and December 31, 2021, the Company held $34.9 million and $690 thousand, respectively, in a restricted escrow account with a major bank for its alternative energy investments.

Note 5 - Cash, Cash Equivalents and Restricted Cash

6 Months Ended

Jun. 30, 2022

Cash and Cash Equivalents Disclosure [Text Block]

5. Cash, Cash Equivalents and Restricted Cash

The Company manages its cash and cash equivalents based upon the Company’s operating, investment, and financing activities. Cash and cash equivalents, including for purposes of reporting cash flows, consist of cash on hand, amounts due from banks, and short-term investments with original maturity of three months or less.

The Company is required to maintain reserves with the Federal Reserve Bank. On December 7, 2020, the Federal Reserve Bank announced they were reducing the reserve requirement ratio to zero percent across all deposit tiers as of March 26, 2020. There were zero average reserve balances required as of June 30, 2022 or for the year ended December 31, 2021. The average excess balance with Federal Reserve Bank was $1.4 billion as of June 30, 2022 and $1.6 billion for the year ended December 31, 2021. As of June 30, 2022 and December 31, 2021, the Company had zero and $24.3 million, respectively, on deposit in a cash margin account that serves as collateral for interest rate swaps. These amounts included zero and $5.9 million as of June 30, 2022 and December 31, 2021, respectively, on deposit in a cash margin account that serves as collateral for the Bancorp’s interest rate swaps. As of June 30, 2022 and December 31, 2021, the Company held $34.9 million and $690 thousand, respectively, in a restricted escrow account with a major bank for its alternative energy investments.