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DEPOSITS (Tables) | 12 Months Ended
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Dec. 31, 2021
DEPOSITS |
Summary of deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021 | ​ | December 31, 2020
​ | ​ | Weighted | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | Average | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​
(Dollars in thousands) |  | Rate |  | Liability |  | Rate |  | Liability
Savings |  | 0.03 | % | $ | 1,158,040 |  | 0.12 | % | $ | 414,809
Certificates of deposit ("CDs") |  | 0.58 | ​ |  | 853,242 |  | 0.84 | ​ |  | 1,322,638
Money market |  | 0.07 | ​ |  | 3,621,552 |  | 0.24 | ​ |  | 1,716,624
Interest-bearing checking |  | 0.18 | ​ |  | 905,717 |  | 0.10 | ​ |  | 290,300
Non-interest-bearing checking |  | — | ​ |  | 3,920,423 |  | — | ​ |  | 780,751
Total |  | 0.09 | % | $ | 10,458,974 |  | 0.36 | % | $ | 4,525,122
Summary of scheduled maturities of CDs outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Maturing | ​ | Weighted Average |
(Dollars in thousands) |  | Balance |  | Interest Rate |
2022 |  | $ | 701,259 | ​ | 0.51 | %
2023 | ​ |  | 98,015 | ​ | 0.87 | ​
2024 | ​ |  | 27,402 | ​ | 1.20 | ​
2025 | ​ |  | 15,078 | ​ | 1.12 | ​
2026 | ​ |  | 9,110 | ​ | 0.52 | ​
2027 and beyond | ​ |  | 2,378 | ​ | 0.67 | ​
Total | ​ | $ | 853,242 | ​ | 0.58 | %

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- Definition Tabular disclosure of type of deposit liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (e) Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(ii) Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (1) Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (1) Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (d) Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i) Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(iv) Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (5) Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(iii) Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (4) Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2) Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (c) Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (2) Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (3) Reference 15: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) + Details
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