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COMMITMENTS AND CONTINGENCIES | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
COMMITMENTS AND CONTINGENCIES | 10. COMMITMENTS AND CONTINGENCIES Litigation Matters In the ordinary course of its operations, the Company and its subsidiaries are parties to various legal proceedings. Based on the information presently available, and after consultation with legal counsel, management believes that the ultimate outcome in such proceedings, in the aggregate, will not have a material adverse effect on the business, financial condition, or results of operations of the Company. Financial Instruments with Off-Balance Sheet Risk The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include commitments to extend credit and letters of credit. These instruments involve elements of credit and interest rate risk in excess of the amount recognized on the Company’s Consolidated Balance Sheets. The contractual amounts of these instruments reflect the extent of the Company’s involvement in particular classes of financial instruments. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit and letters of credit written is represented by the contractual amount of these instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Unless noted otherwise, the Company does not require collateral or other security to support off-balance sheet financial instruments with credit risk. The Company considers credit losses related to off-balance sheet commitments by undergoing a similar process in evaluating losses for loans that are carried on the balance sheet. The Company considers historical loss and funding information, current and future economic conditions, risk ratings, and past due status among other factors in the consideration of expected credit losses in the Company’s off-balance sheet commitments to extend credit. The Company also records an indemnification reserve that includes balances relating to mortgage loans previously sold based on historical statistics and loss rates. As of December 31, 2020 and 2019, the Company’s reserves for unfunded commitment and indemnification were $10.8 million and $2.6 million, respectively. Commitments to extend credit are agreements to lend to customers as long as there are no violations of any conditions established in the contracts. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Because many of the commitments may expire without being completely drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Letters of credit are conditional commitments issued by the Company to guarantee the performance of customers to third parties. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. The following table presents the balances of commitments and contingencies as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2020 |  | 2019
Commitments with off-balance sheet risk: |  | ​ |  |  | ​ |
Commitments to extend credit (1) | ​ | $ | 4,722,412 | ​ | $ | 4,691,272
Letters of credit | ​ |  | 161,827 | ​ |  | 209,658
Total commitments with off-balance sheet risk | ​ | $ | 4,884,239 | ​ | $ | 4,900,930
(1) Includes unfunded overdraft protection. | ​ | ​ | ​ | ​ | ​ | ​
​ Prior to the first quarter of 2020, the Company was required to maintain a reserve against its deposits in accordance with Regulation D of the Federal Reserve Act. On March 15, 2020, the Federal Reserve Board announced that reserve requirement ratios would be reduced to zero percent effective March 26, 2020. This action eliminated reserve requirements for all depository institutions. As of December 31, 2020, the Company had approximately $290.5 million in deposits in other financial institutions, of which $251.0 million served as collateral for cash flow and loan swap derivatives. As of December 31, 2019, the Company had approximately $131.4 million in deposits in other financial institutions, of which $116.8 million served as collateral for cash flow and loan swap derivatives. The Company had approximately $36.4 million and $11.6 million in deposits in other financial institutions that were uninsured at December 31, 2020 and 2019, respectively. At least annually, the Company’s management evaluates the loss risk of its uninsured deposits in financial counterparties. For asset/liability management purposes, the Company uses interest rate swap agreements to hedge various exposures or to modify the interest rate characteristics of various balance sheet accounts. See Note 11 “Derivatives” for additional information. As part of the Company’s liquidity management strategy, it pledges collateral to secure various financing and other activities that occur during the normal course of business. The following tables present the types of collateral pledged, at December 31, 2020 and 2019 (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Pledged Assets as of December 31, 2020 | ​ | ​ | ​
​ |  | ​ | ​ |  | AFS |  | HTM |  | ​ | ​ |  | ​ | ​
​ | ​ | Cash | ​ | Securities (1) | ​ | Securities (1) | ​ | Loans (2) | ​ | Total
Public deposits | ​ | $ | — | ​ | $ | 469,864 | ​ | $ | 436,449 | ​ | $ | — | ​ | $ | 906,313
Repurchase agreements | ​ |  | — | ​ |  | 116,876 | ​ |  | — | ​ |  | — | ​ |  | 116,876
FHLB advances | ​ |  | — | ​ |  | 52,323 | ​ |  | — | ​ |  | 4,374,383 | ​ |  | 4,426,706
Derivatives | ​ |  | 251,047 | ​ |  | 785 | ​ |  | — | ​ |  | — | ​ |  | 251,832
Fed Funds | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 340,847 | ​ | ​ | 340,847
Other purposes | ​ |  | — | ​ | ​ | 123,388 | ​ | ​ | 8,634 | ​ | ​ | — | ​ | ​ | 132,022
Total pledged assets | ​ | $ | 251,047 | ​ | $ | 763,236 | ​ | $ | 445,083 | ​ | $ | 4,715,230 | ​ | $ | 6,174,596
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Balance represents market value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(2) Balance represents book value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Pledged Assets as of December 31, 2019 | ​ | ​ | ​
​ |  | ​ | ​ |  | AFS |  | HTM |  | ​ | ​ |  | ​ | ​
​ | ​ | Cash | ​ | Securities (1) | ​ | Securities (1) | ​ | Loans (2) | ​ | Total
Public deposits | ​ | $ | — | ​ | $ | 467,266 | ​ | $ | 292,096 | ​ | $ | — | ​ | $ | 759,362
Repurchase agreements | ​ |  | — | ​ |  | 79,299 | ​ |  | 7,602 | ​ |  | — | ​ |  | 86,901
FHLB advances | ​ |  | — | ​ |  | 63,812 | ​ |  | — | ​ |  | 3,846,934 | ​ |  | 3,910,746
Derivatives | ​ |  | 116,839 | ​ |  | 1,260 | ​ |  | — | ​ |  | — | ​ |  | 118,099
Fed Funds | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 292,738 | ​ | ​ | 292,738
Other purposes | ​ |  | — | ​ |  | 122,358 | ​ |  | 10,654 | ​ |  | — | ​ |  | 133,012
Total pledged assets | ​ | $ | 116,839 | ​ | $ | 733,995 | ​ | $ | 310,352 | ​ | $ | 4,139,672 | ​ | $ | 5,300,858
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Balance represents book value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(2) Balance represents market value. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​

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