Minimum Regulatory Capital Requirements (Details) $ in Thousands	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Statistical Disclosure for Banks [Abstract]
Capital conservation buffer	2.50%
Consolidated
Actual
CET1 (to risk weighted assets)	$ 488,481	$ 361,404
CET1 (to risk weighted assets), ratio	0.0992	0.0857
Tier 1 Capital (to risk weighted assets)	$ 592,215	$ 469,977
Tier 1 Capital (to risk weighted assets), ratio	0.1202	0.1115
Total Capital (to risk weighted assets)	$ 627,393	$ 509,591
Total Capital (to risk weighted assets), ratio	0.1274	0.1209
Tier 1 capital (to average assets)	$ 592,215	$ 469,977
Tier 1 capital (to average assets), ratio	0.1107	0.0877
For Capital Adequacy Purposes
CET1 (to risk weighted assets)	$ 221,644	$ 189,701
CET1 (to risk weighted assets), ratio	4.50%	4.50%
Tier 1 Capital (to risk weighted assets)	$ 295,525	$ 252,935
Tier 1 Capital (to risk weighted assets), ratio	0.0600	0.0600
Total Capital (to risk weighted assets)	$ 394,033	$ 337,246
Total Capital (to risk weighted assets), ratio	0.0800	0.0800
Tier 1 capital (to average assets)	$ 213,931	$ 214,421
Tier 1 capital (to average assets), ratio	0.0400	0.0400
Northpointe Bank
Actual
CET1 (to risk weighted assets)	$ 588,659	$ 487,519
CET1 (to risk weighted assets), ratio	0.1195	0.1156
Tier 1 Capital (to risk weighted assets)	$ 588,659	$ 487,519
Tier 1 Capital (to risk weighted assets), ratio	0.1195	0.1156
Total Capital (to risk weighted assets)	$ 598,837	$ 502,996
Total Capital (to risk weighted assets), ratio	0.1216	0.1193
Tier 1 capital (to average assets)	$ 588,659	$ 487,519
Tier 1 capital (to average assets), ratio	0.1101	0.0909
For Capital Adequacy Purposes
CET1 (to risk weighted assets)	$ 221,649	$ 189,699
CET1 (to risk weighted assets), ratio	4.50%	4.50%
Tier 1 Capital (to risk weighted assets)	$ 295,532	$ 252,932
Tier 1 Capital (to risk weighted assets), ratio	0.0600	0.0600
Total Capital (to risk weighted assets)	$ 394,043	$ 337,242
Total Capital (to risk weighted assets), ratio	0.0800	0.0800
Tier 1 capital (to average assets)	$ 213,818	$ 214,419
Tier 1 capital (to average assets), ratio	0.0400	0.0400
To be Well Capitalized Under Prompt Corrective Action Provisions
CET1 (to risk weighted assets)	$ 320,160	$ 274,010
CET1 (to risk weighted assets), ratio	6.50%	6.50%
Tier 1 Capital (to risk weighted assets)	$ 394,043	$ 337,242
Tier 1 Capital (to risk weighted assets), ratio	0.0800	0.0800
Total Capital (to risk weighted assets)	$ 492,553	$ 421,553
Total Capital (to risk weighted assets), ratio	0.1000	0.1000
Tier 1 capital (to average assets)	$ 267,273	$ 268,024
Tier 1 capital (to average assets), ratio	0.0500	0.0500

Capital Conservation Buffer

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Compliance with Regulatory Capital Requirements under Banking Regulations, Actual

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Compliance With Regulatory Capital Requirements Under Banking Regulations, Capital Adequecy Requirements

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

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