Subsequent Event	6 Months Ended
Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventOn July 19, 2024, the Bank completed the acquisition of six Montana branch locations (the “branches”) of Rocky Mountain Bank Division of HTLF Bank. The acquisition resulted in the Company paying a deposit premium of $25,240,000 to acquire the Branches. As of July 19, 2024, the acquired Branches had preliminary gross loans of $290,026,000, and deposits of $395,080,000. The Branches are located in Billings, Bozeman, Plentywood, Stevensville, and Whitehall. The Branches will be combined with existing divisions of the Bank operating in Montana.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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