Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net Income	$ 36,391	$ 46,842
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	2,000	2,000
Depreciation and Amortization	5,230	5,885
Amortization of Deferred Loan and Lease (Fees) Costs, Net	48	323
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	3,071	3,390
Amortization of Operating Lease Right-of-Use Assets	3,019	2,908
Share-Based Compensation	4,030	3,371
Benefit Plan Contributions	(571)	(419)
Deferred Income Taxes	2,468	5,708
Net Gains on Sales of Loans and Leases	(537)	(676)
Net Losses on Sales of Investment Securities	1,497	1,792
Proceeds from Sales of Loans Held for Sale	11,836	7,299
Originations of Loans Held for Sale	(10,800)	(8,384)
Net Tax Benefits (Deficiency) from Share-Based Compensation	(844)	(418)
Net Change in Other Assets and Other Liabilities	(3)	(100,580)
Net Cash Provided by (Used in) Operating Activities	56,835	(30,959)
Investment Securities Available-for-Sale:
Proceeds from Prepayments and Maturities	49,482	59,837
Purchases	(706)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	88,021	105,876
Net Change in Loans and Leases	110,211	(180,606)
Purchases of Premises and Equipment	(2,860)	(2,240)
Net Cash Provided by (Used in) Investing Activities	244,148	(17,133)
Financing Activities
Net Change in Deposits	(378,458)	(124,396)
Net Change in Short-Term Borrowings		325,000
Proceeds from Long-Term Debt		100,000
Repayments of Long-Term Debt	(27)	(25)
Proceeds from Issuance of Common Stock	1,424	1,437
Repurchase of Common Stock	(3,320)	(13,793)
Cash Dividends Paid on Common Stock	(28,056)	(27,944)
Cash Dividends Paid on Preferred Stock	(1,969)	(1,969)
Net Cash (Used in) Provided by Financing Activities	(410,406)	258,310
Net Change in Cash and Cash Equivalents	(109,423)	210,218
Cash and Cash Equivalents at Beginning of Period	1,000,944	401,767
Cash and Cash Equivalents at End of Period	891,521	611,985
Supplemental Information
Cash Paid for Interest	100,360	49,014
Cash Paid for Income Taxes	2,486	$ 92
Transfer from Loans to Foreclosed Real Estate	$ 574

Tax benefit from share based compensation.

No definition available.

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Namespace Prefix:	boh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.