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Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value |
Schedule of financial assets and liabilities measured on a recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Fair Value Measurements Using |
​ |  | ​ |  | ​ | ​ |  | Significant |  | ​ |
​ | ​ | ​ | ​ | Quoted Prices in | ​ | Other | ​ | Significant |
​ | ​ | ​ | ​ | Active Markets for | ​ | Observable | ​ | Unobservable |
​ | ​ | ​ | ​ | Identical Assets | ​ | Inputs | ​ | Inputs |
​ | ​ | Balance | ​ | (Level 1) | ​ | (Level 2) | ​ | (Level 3) |
​ | ​ | (Dollars in thousands) |
Assets at December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities | ​ | $ | 175,326 | ​ | ​ | — | ​ | $ | 175,326 | ​ | ​ | — | ​
U.S. Treasury | ​ | ​ | 60,448 | ​ | ​ | 60,448 | ​ | ​ | — | ​ | ​ | — | ​
I/O strip receivables | ​ | ​ | 305 | ​ | ​ | — | ​ | ​ | 305 | ​ | ​ | — | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Assets at December 31, 2019 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities | ​ | $ | 284,361 | ​ | ​ | — | ​ | $ | 284,361 | ​ | ​ | — | ​
U.S. Treasury | ​ | ​ | 120,464 | ​ | ​ | 120,464 | ​ | ​ | — | ​ |  | — | ​
I/O strip receivables | ​ | ​ | 503 | ​ |  | — | ​ | ​ | 503 | ​ |  | — | ​
Schedule of carrying amounts and estimated fair values of financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Estimated Fair Value
​ |  | ​ |  | ​ |  | Significant |  | ​ |  | ​
​ | ​ | ​ | ​ | Quoted Prices in | ​ | Other | ​ | Significant | ​ | ​
​ | ​ | ​ | ​ | Active Markets for | ​ | Observable | ​ | Unobservable | ​ | ​
​ | ​ | Carrying | ​ | Identical Assets | ​ | Inputs | ​ | Inputs | ​ | ​
​ | ​ | Amounts | ​ | (Level 1) | ​ | (Level 2) | ​ | (Level 3) | ​ | Total
​ | ​ | (Dollars in thousands)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 1,131,073 | ​ | $ | 1,131,073 | ​ | $ | — | ​ | $ | — | ​ | $ | 1,131,073
Securities available-for-sale | ​ |  | 235,774 | ​ |  | 60,448 | ​ |  | 175,326 | ​ |  | — | ​ |  | 235,774
Securities held-to-maturity | ​ |  | 297,389 | ​ |  | — | ​ |  | 304,927 | ​ |  | — | ​ |  | 304,927
Loans (including loans held-for-sale), net | ​ |  | 2,576,560 | ​ |  | — | ​ |  | 1,699 | ​ |  | 2,572,993 | ​ |  | 2,574,692
FHLB stock, FRB stock, and other | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
investments | ​ |  | 33,522 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | N/A
Accrued interest receivable | ​ |  | 10,546 | ​ |  | 309 | ​ | ​ | 1,512 | ​ | ​ | 8,725 | ​ |  | 10,546
I/O strips receivables | ​ |  | 305 | ​ |  | — | ​ |  | 305 | ​ |  | — | ​ |  | 305
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Time deposits | ​ | $ | 153,407 | ​ | $ | — | ​ | $ | 153,740 | ​ | $ | — | ​ | $ | 153,740
Other deposits | ​ |  | 3,761,079 | ​ |  | — | ​ |  | 3,761,079 | ​ |  | — | ​ |  | 3,761,079
Subordinated debt | ​ | ​ | 39,740 | ​ | ​ | — | ​ | ​ | 40,340 | ​ | ​ | — | ​ | ​ | 40,340
Accrued interest payable | ​ |  | 545 | ​ |  | — | ​ |  | 545 | ​ |  | — | ​ |  | 545
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
` | ​ | ​ | ​ | ​ | Estimated Fair Value
​ |  | ​ |  | ​ |  | Significant |  | ​ |  | ​
​ | ​ | ​ | ​ | Quoted Prices in | ​ | Other | ​ | Significant | ​ | ​
​ | ​ | ​ | ​ | Active Markets for | ​ | Observable | ​ | Unobservable | ​ | ​
​ | ​ | Carrying | ​ | Identical Assets | ​ | Inputs | ​ | Inputs | ​ | ​
​ | ​ | Amounts | ​ | (Level 1) | ​ | (Level 2) | ​ | (Level 3) | ​ | Total
​ | ​ | (Dollars in thousands)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 457,370 | ​ | $ | 457,370 | ​ | $ | — | ​ | $ | — | ​ | $ | 457,370
Securities available-for-sale | ​ |  | 404,825 | ​ |  | 120,464 | ​ |  | 284,361 | ​ |  | — | ​ |  | 404,825
Securities held-to-maturity | ​ |  | 366,560 | ​ |  | — | ​ |  | 368,107 | ​ |  | — | ​ |  | 368,107
Loans (including loans held-for-sale), net | ​ |  | 2,511,611 | ​ |  | — | ​ |  | 1,052 | ​ |  | 2,512,277 | ​ |  | 2,513,329
FHLB stock, FRB stock, and other | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
investments | ​ |  | 29,842 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | N/A
Accrued interest receivable | ​ |  | 10,915 | ​ |  | 446 | ​ | ​ | 2,218 | ​ | ​ | 8,251 | ​ |  | 10,915
I/O strips receivables | ​ |  | 503 | ​ |  | — | ​ |  | 503 | ​ |  | — | ​ |  | 503
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Time deposits | ​ | $ | 168,034 | ​ | $ | — | ​ | $ | 158,704 | ​ | $ | — | ​ | $ | 158,704
Other deposits | ​ |  | 3,246,734 | ​ |  | — | ​ |  | 3,246,734 | ​ |  | — | ​ |  | 3,246,734
Subordinated debt | ​ | ​ | 39,554 | ​ | ​ | — | ​ | ​ | 40,404 | ​ | ​ | — | ​ | ​ | 40,404
Accrued interest payable | ​ |  | 707 | ​ |  | — | ​ |  | 707 | ​ |  | — | ​ |  | 707

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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