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Deposits (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure Text Block [Abstract]

Deposit Liabilities, Type

Deposits were as follows:

			March 31, 2025						December 31, 2024
Non-interest-bearing demand deposits			$	14,249,173					$	14,441,820
Interest-bearing deposits:
Savings and interest checking			10,117,421						10,310,942
Money market accounts			11,488,861						11,568,254
Time accounts			6,535,216						6,401,732
Total interest-bearing deposits			28,141,498						28,280,928
Total deposits			$	42,390,671					$	42,722,748

Additional Information About Corporation's Deposits

The table below presents additional information about our deposits. Public funds in excess of deposit insurance limits are included in the totals for deposits not covered by insurance; however, such deposits are generally fully collateralized by securities.

			March 31, 2025						December 31, 2024
Deposits from foreign sources (primarily Mexico)			$	1,229,826					$	1,219,463
Non-interest-bearing public funds deposits			535,989						759,819
Interest-bearing public funds deposits			595,333						625,104
Total deposits not covered by deposit insurance			22,416,045						22,972,618
Time deposits not covered by deposit insurance			2,838,303						2,744,112

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Schedule Of Corporation Deposits Additional Information [Table Text Block]

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Tabular disclosure of type of deposit liability.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph e
-Publisher SEC

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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph a
-Subparagraph (5)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (4)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (2)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (1)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (1)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (2)
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-Name Regulation S-K (SK)
-Number 229
-Section 1406
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Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1406
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-Subparagraph (2)(iv)
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Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph f
-Subparagraph (2)(iii)
-Publisher SEC

Reference 15: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph f
-Subparagraph (2)(ii)
-Publisher SEC

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