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Portfolio Loans- Distribution of portfolio loans (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
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Distributions of portfolio loans |  |  |  |
Portfolio loans | $ 7,272,873 | $ 7,188,998 |  |
ACL | (88,213) | (87,887) | $ (93,943) | $ (101,048)
Portfolio loans, net | 7,184,660 | 7,101,111 |  |
Commercial Loans |  |  |  |
Distributions of portfolio loans |  |  |  |
Portfolio loans | 1,906,595 | 1,943,886 |  |
ACL | (24,173) | (23,855) | (23,025) | (23,866)
Commercial Real Estate Loans |  |  |  |
Distributions of portfolio loans |  |  |  |
Portfolio loans | 3,134,794 | 3,119,807 |  |
ACL | (37,339) | (38,249) | (43,306) | (46,230)
Real Estate Construction |  |  |  |
Distributions of portfolio loans |  |  |  |
Portfolio loans | 445,428 | 385,996 |  |
ACL | (5,705) | (5,102) | (6,879) | (8,193)
Retail real estate |  |  |  |
Distributions of portfolio loans |  |  |  |
Portfolio loans | 1,544,365 | 1,512,976 |  |
ACL | (17,555) | (17,589) | (19,978) | (21,992)
Retail other |  |  |  |
Distributions of portfolio loans |  |  |  |
Portfolio loans | 241,691 | 226,333 |  |
ACL | $ (3,441) | $ (3,092) | $ (755) | $ (767)

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