The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also impact reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A summary of the significant accounting policies to assist the reader in understanding the financial presentation is provided in the Notes to Consolidated Financial Statements in the Form 10-K.

Cash and cash equivalents includes Cash and due from banks and amounts due from the Federal Reserve Bank (FRB). Cash on hand, cash items in the process of collection, and amounts due from correspondent banks are included in Cash and due from banks. Amounts due from the FRB are interest-bearing for all periods presented and are included in the Interest-bearing due from banks line on the Company’s Consolidated Balance Sheets.

This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of March 31, 2022 and March 31, 2021 (in thousands):

	March 31,
	2022		2021
Due from the FRB	$	6,328,886	$	3,806,302
Cash and due from banks		357,772		387,230
Cash and cash equivalents at end of period	$	6,686,658	$	4,193,532

Also included in the Interest-bearing due from banks, but not considered cash and cash equivalents, are interest-bearing accounts held at other financial institutions, which totaled $27.1 million and $54.5 million at March 31, 2022 and March 31, 2021, respectively.

Basic net income per share is computed based on the weighted average number of shares of common stock outstanding during each period. Diluted quarter-to-date net income per share includes the dilutive effect of 425,337 and 424,109 shares issuable upon the exercise of stock options, nonvested restricted shares, and nonvested restricted stock units granted by the Company and outstanding at March 31, 2022 and 2021.

Certain options, restricted stock and restricted stock units issued under employee benefits plans were excluded from the computation of diluted earnings per share because they were anti-dilutive. For the three months ended March 31, 2022 and March 31, 2021, there were no outstanding stock options, restricted stock and restricted stock units excluded from the computation of diluted income per share.

The Company records all derivatives on the Consolidated Balance Sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Currently, 12 of the Company’s derivatives are designated in qualifying hedging relationships. The remainder of the Company’s derivatives are not designated in qualifying hedging relationships, as the derivatives are not used to manage risks within the Company’s assets or liabilities. All changes in fair value of the Company’s non-designated derivatives and fair value hedges are recognized directly in earnings. Changes in fair value of the Company’s cash flow hedges are recognized in accumulated other comprehensive income (AOCI) and are reclassified to earnings when the hedged transaction affects earnings.