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Portfolio Loans- Distribution of portfolio loans (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | --- | ---
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | $ 7,185,650 |  | $ 6,814,177 |  |  |
ACL | (95,410) | $ (93,943) | (101,048) | $ (96,046) | $ (84,384) | $ (53,748)
Portfolio loans, net | 7,090,240 |  | 6,713,129 |  |  |
Commercial Loans |  |  |  |  |  |
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | 2,054,550 |  | 2,014,576 |  |  |
ACL | (24,356) | (23,025) | (23,866) | (24,146) | (22,725) | (18,291)
Commercial Real Estate Loans |  |  |  |  |  |
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | 2,920,312 |  | 2,892,535 |  |  |
ACL | (39,974) | (43,306) | (46,230) | (42,680) | (35,967) | (21,190)
Real Estate Construction |  |  |  |  |  |
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | 500,599 |  | 461,786 |  |  |
ACL | (7,599) | (6,879) | (8,193) | (7,792) | (7,193) | (3,204)
Retail Real Estate |  |  |  |  |  |
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | 1,525,810 |  | 1,407,852 |  |  |
ACL | (20,505) | (19,978) | (21,992) | (20,405) | (17,454) | (10,495)
Retail Other |  |  |  |  |  |
Distributions of portfolio loans |  |  |  |  |  |
Portfolio loans | 184,379 |  | 37,428 |  |  |
ACL | $ (2,976) | $ (755) | $ (767) | $ (1,023) | $ (1,045) | $ (568)

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