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Condensed Financial Information (Parent Company Only) - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 18, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities |  |  |  |
Net income |  | $ 392,929 | $ 305,262 | $ 319,021
Items not requiring (providing) cash |  |  |  |
(Accretion)/ amortization |  | 16,491 | 20,335 | 28,516
Share-based compensation |  | 9,274 | 9,133 | 8,848
Decrease (increase) in value of equity securities |  | 1,094 | 1,272 | (7,178)
Changes in other assets |  | (1,654) | 9,342 | 1,756
Changes in other liabilities |  | (724) | 22,602 | (9,379)
Net cash provided by operating activities |  | 379,670 | 413,172 | 389,380
Cash flows from investing activities |  |  |  |
Purchases of equity securities |  | 0 | (49,975) | (13,276)
Net cash provided by (used in) investing activities |  | 578,459 | (1,024,270) | 624,660
Cash flows from financing activities |  |  |  |
Retirement of subordinated debentures |  | 0 | (300,000) | 0
Proceeds from issuance of subordinated debentures | $ 296,400 | 0 | 296,324 | 0
Redemption of trust preferred securities |  | 0 | (96,499) | 0
Proceeds from exercise of stock options |  | 802 | 156 | 2,374
Repurchase of common stock |  | (48,771) | (70,856) | (44,480)
Dividends paid |  | (145,904) | (128,424) | (92,142)
Net cash (used in) provided by financing activities |  | (682,706) | (2,314,427) | 1,372,487
Net change in cash and cash equivalents |  | 275,423 | (2,925,525) | 2,386,527
Cash and cash equivalents – beginning of year |  | 724,790 | 3,650,315 | 1,263,788
Cash and cash equivalents – end of year |  | 1,000,213 | 724,790 | 3,650,315
Home BancShares |  |  |  |
Cash flows from operating activities |  |  |  |
Net income |  | 392,929 | 305,262 | 319,021
Items not requiring (providing) cash |  |  |  |
(Accretion)/ amortization |  | (586) | 1,912 | 767
Share-based compensation |  | 9,274 | 9,133 | 8,848
Decrease (increase) in value of equity securities |  | 1,094 | 1,272 | (7,178)
Equity in undistributed income of subsidiaries |  | (84,869) | (116,566) | (51,462)
Changes in other assets |  | (364) | (4,149) | 90
Changes in other liabilities |  | (155) | 2,290 | (76)
Net cash provided by operating activities |  | 317,323 | 199,154 | 270,010
Cash flows from investing activities |  |  |  |
Net cash proceeds received (paid) – market acquisitions |  | 0 | 201,428 | 0
Purchases of equity securities |  | 0 | (49,975) | (13,276)
Proceeds from sale of equity securities |  | 1,522 | 13,778 | 16,381
Redemptions of other investments |  | 0 | 2,899 | 0
Net cash provided by (used in) investing activities |  | 1,522 | 168,130 | 3,105
Cash flows from financing activities |  |  |  |
Retirement of subordinated debentures |  | 0 | (300,000) | 0
Proceeds from issuance of subordinated debentures |  | 0 | 296,324 | 0
Redemption of trust preferred securities |  | 0 | (96,499) | 0
Proceeds from exercise of stock options |  | 802 | 156 | 2,374
Repurchase of common stock |  | (48,771) | (70,856) | (44,480)
Dividends paid |  | (145,904) | (128,424) | (92,142)
Net cash (used in) provided by financing activities |  | (193,873) | (299,299) | (134,248)
Net change in cash and cash equivalents |  | 124,972 | 67,985 | 138,867
Cash and cash equivalents – beginning of year |  | 359,570 | 291,585 | 152,718
Cash and cash equivalents – end of year |  | $ 484,542 | $ 359,570 | $ 291,585

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