Recent Developments, Including Mergers and Acquisitions	12 Months Ended
Dec. 31, 2019
Recent Developments Including Mergers And Acquisitions [Abstract]
Recent Developments, Including Mergers and Acquisitions	(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS On December 2, 2019 BancFirst entered into a purchase and assumption agreement with Citizens State Bank of Okemah, Oklahoma (Citizens) to purchase certain assets and assume the deposits and certain other obligations of Citizens. Citizens is an Oklahoma state-chartered bank with banking locations in Okemah and Paden, Oklahoma. These banking locations would become branches of BancFirst. As of September 30, 2019, Citizens had approximately $56 million in total assets, $26 million in loans and $42 million in deposits. The purchase and assumptions is expected to be completed during the first quarter of 2020 and is subject to regulatory approval. On August 15, 2019 BancFirst Corporation acquired Pegasus Bank, for an aggregate cash purchase price of $123.5 million. Pegasus Bank is a Texas state-charted bank with three banking locations in Dallas, Texas. At acquisition, Pegasus Bank had approximately $651.1 million in total assets, $389.9 million in loans and $603.9 million in deposits. Pegasus Bank will continue to operate as “Pegasus Bank” under a separate Texas state-charter and remain an independent subsidiary of BancFirst Corporation. BancFirst Corporation intends to provide an appropriate amount of capital or other support to increase Pegasus Bank’s ability to approve larger loans and allow Pegasus to continue to grow their assets. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $9.9 million and goodwill of approximately $68.9 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of Pegasus Bank complements the Company by expanding into the high-growth Dallas market. On August 31, 2018 BFTower, LLC, a wholly-owned subsidiary of BancFirst purchased Cotter Ranch Tower in Oklahoma City for the Company’s corporate headquarters for $21.0 million. Cotter Ranch Tower was subsequently renamed BancFirst Tower. BancFirst Tower consists of an aggregate of 507,000 square feet, has 36 floors and is the second tallest building in Oklahoma City. The BancFirst Tower will remain an income producing property as approximately 55% is currently, and is intended to continue to be, leased to outside tenants. BancFirst Tower will allow the Company to consolidate operations from three locations to one and will improve operational efficiencies. Upon consolidation, the Company expects to occupy approximately 35% of BancFirst Tower, resulting in approximately 90% total occupancy. Renovations on BancFirst Tower are expected to be completed by the end of 2021 and are expected to cost approximately $71 million. The renovation costs include substantial deferred maintenance including HVAC, plumbing, electrical, elevators, building skin and roof while also including much needed improvements to both the interior and exterior common areas including the lobby, underground and outdoor plaza. The Company started depreciating certain components of the renovation in December 2019 and will start depreciating other components of the renovation as they are put into service. The Company estimates spending approximately $12 million on tenant improvements for the approximate 165,000 square feet that the Company will occupy. The total purchase price, renovation costs, and Company tenant improvement costs were determined to be favorable to other alternatives, such as constructing new corporate headquarters or leasing space. On December 14, 2018, BFTower LLC, purchased a 42.6% ownership interest in SFPG, LLC, which is the owner of a 1,568 space parking garage adjacent to BancFirst Tower, for $9.8 million. In addition, on December 31, 2019, BFTower LLC, purchased a 50% ownership interest in ParcFirst@Bricktown, LLC, which is the owner of an outdoor surface parking lot in close proximity to BancFirst Tower, for $1.5 million. The Company is evaluating construction of a parking garage on part of the surface lot. On January 11, 2018, the Company acquired First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company, with locations in Carney, Grove, Ketchum, Luther, Tulsa and Wagoner. First Bank & Trust Company had approximately $290 million in total assets, $247 million in loans and $251 million in deposits. First Bank & Trust Company operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on February 16, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $6.3 million and goodwill of approximately $19.1 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company complements the Company’s community banking strategy by adding an additional five communities to its banking network in Oklahoma. On January 11, 2018, the Company acquired First Chandler Corp. and its subsidiary bank, First Bank of Chandler, with two locations in Chandler. First Bank of Chandler had approximately $88 million in total assets, $66 million in loans and $79 million in deposits. First Bank of Chandler operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on September 7, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $2.2 million and goodwill of approximately $6.6 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Chandler Corp. and its subsidiary bank, First Bank of Chandler complements the Company’s community banking strategy by increasing its banking network in Oklahoma.

Recent Developments, Including Mergers and Acquisitions

12 Months Ended

Dec. 31, 2019

Recent Developments Including Mergers And Acquisitions [Abstract]

Recent Developments, Including Mergers and Acquisitions

(2) RECENT DEVELOPMENTS, INCLUDING MERGERS AND ACQUISITIONS

On December 2, 2019 BancFirst entered into a purchase and assumption agreement with Citizens State Bank of Okemah, Oklahoma (Citizens) to purchase certain assets and assume the deposits and certain other obligations of Citizens. Citizens is an Oklahoma state-chartered bank with banking locations in Okemah and Paden, Oklahoma. These banking locations would become branches of BancFirst. As of September 30, 2019, Citizens had approximately $56 million in total assets, $26 million in loans and $42 million in deposits. The purchase and assumptions is expected to be completed during the first quarter of 2020 and is subject to regulatory approval.

On August 15, 2019 BancFirst Corporation acquired Pegasus Bank, for an aggregate cash purchase price of $123.5 million. Pegasus Bank is a Texas state-charted bank with three banking locations in Dallas, Texas. At acquisition, Pegasus Bank had approximately $651.1 million in total assets, $389.9 million in loans and $603.9 million in deposits. Pegasus Bank will continue to operate as “Pegasus Bank” under a separate Texas state-charter and remain an independent subsidiary of BancFirst Corporation. BancFirst Corporation intends to provide an appropriate amount of capital or other support to increase Pegasus Bank’s ability to approve larger loans and allow Pegasus to continue to grow their assets. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $9.9 million and goodwill of approximately $68.9 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of Pegasus Bank complements the Company by expanding into the high-growth Dallas market.

On August 31, 2018 BFTower, LLC, a wholly-owned subsidiary of BancFirst purchased Cotter Ranch Tower in Oklahoma City for the Company’s corporate headquarters for $21.0 million. Cotter Ranch Tower was subsequently renamed BancFirst Tower. BancFirst Tower consists of an aggregate of 507,000 square feet, has 36 floors and is the second tallest building in Oklahoma City. The BancFirst Tower will remain an income producing property as approximately 55% is currently, and is intended to continue to be, leased to outside tenants. BancFirst Tower will allow the Company to consolidate operations from three locations to one and will improve operational efficiencies. Upon consolidation, the Company expects to occupy approximately 35% of BancFirst Tower, resulting in approximately 90% total occupancy. Renovations on BancFirst Tower are expected to be completed by the end of 2021 and are expected to cost approximately $71 million. The renovation costs include substantial deferred maintenance including HVAC, plumbing, electrical, elevators, building skin and roof while also including much needed improvements to both the interior and exterior common areas including the lobby, underground and outdoor plaza. The Company started depreciating certain components of the renovation in December 2019 and will start depreciating other components of the renovation as they are put into service. The Company estimates spending approximately $12 million on tenant improvements for the approximate 165,000 square feet that the Company will occupy. The total purchase price, renovation costs, and Company tenant improvement costs were determined to be favorable to other alternatives, such as constructing new corporate headquarters or leasing space. On December 14, 2018, BFTower LLC, purchased a 42.6% ownership interest in SFPG, LLC, which is the owner of a 1,568 space parking garage adjacent to BancFirst Tower, for $9.8 million. In addition, on December 31, 2019, BFTower LLC, purchased a 50% ownership interest in ParcFirst@Bricktown, LLC, which is the owner of an outdoor surface parking lot in close proximity to BancFirst Tower, for $1.5 million. The Company is evaluating construction of a parking garage on part of the surface lot.

On January 11, 2018, the Company acquired First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company, with locations in Carney, Grove, Ketchum, Luther, Tulsa and Wagoner. First Bank & Trust Company had approximately $290 million in total assets, $247 million in loans and $251 million in deposits. First Bank & Trust Company operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on February 16, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $6.3 million and goodwill of approximately $19.1 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Wagoner Corp. and its subsidiary bank, First Bank & Trust Company complements the Company’s community banking strategy by adding an additional five communities to its banking network in Oklahoma.

On January 11, 2018, the Company acquired First Chandler Corp. and its subsidiary bank, First Bank of Chandler, with two locations in Chandler. First Bank of Chandler had approximately $88 million in total assets, $66 million in loans and $79 million in deposits. First Bank of Chandler operated as a subsidiary of BancFirst Corporation until it was merged into BancFirst on September 7, 2018. As a result of the acquisition, the Company recorded a core deposit intangible of approximately $2.2 million and goodwill of approximately $6.6 million. The effect of this acquisition was included in the consolidated financial statements of the Company from the date of acquisition forward. The acquisition did not have a material effect on the Company’s consolidated financial statements. The acquisition of First Chandler Corp. and its subsidiary bank, First Bank of Chandler complements the Company’s community banking strategy by increasing its banking network in Oklahoma.