Deposits (Tables)

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Schedule of Deposits

Deposits were as follows:

	March 31, 2018		Percentage of Total		December 31, 2017		Percentage of Total
Non-interest-bearing demand deposits:
Commercial and individual	$	10,294,977	38.6	%	$	10,412,882	38.8	%
Correspondent banks	212,199		0.8		222,648		0.8
Public funds	426,986		1.6		561,563		2.1
Total non-interest-bearing demand deposits	10,934,162		41.0		11,197,093		41.7
Interest-bearing deposits:
Private accounts:
Savings and interest checking	6,869,783		25.8		6,788,766		25.2
Money market accounts	7,706,531		28.9		7,624,471		28.4
Time accounts of $100,000 or more	458,103		1.7		453,668		1.7
Time accounts under $100,000	322,105		1.2		324,636		1.2
Total private accounts	15,356,522		57.6		15,191,541		56.5
Public funds:
Savings and interest checking	308,609		1.1		410,140		1.5
Money market accounts	63,155		0.2		59,008		0.2
Time accounts of $100,000 or more	14,892		0.1		14,301		0.1
Time accounts under $100,000	438		—		306		—
Total public funds	387,094		1.4		483,755		1.8
Total interest-bearing deposits	15,743,616		59.0		15,675,296		58.3
Total deposits	$	26,677,778	100.0	%	$	26,872,389	100.0	%

Additional Information About Corporation's Deposits

The following table presents additional information about our deposits:

	March 31, 2018		December 31, 2017
Deposits from foreign sources (primarily Mexico)	$	736,786	$	716,339
Deposits not covered by deposit insurance	13,104,781		13,281,040