XML 26 R15.htm IDEA: XBRL DOCUMENT
v3.26.1

DEPOSITS | 3 Months Ended
--- | ---
Mar. 31, 2026
Deposit Liabilities [Abstract] |
DEPOSITS | DEPOSITS Time deposits that met or exceeded the Federal Deposit Insurance Corporation (“FDIC”) insurance limit of $250 thousand at March 31, 2026 and December 31, 2025 were $629.8 million and $638.0 million, respectively. Scheduled maturities of time deposits as of March 31, 2026 were as follows (in thousands):
2026 | $ | 873,147 |
2027 | 100,607 |
2028 | 10,092 |
2029 | 6,186 |
Thereafter | 12,459 |
Total | $ | 1,002,491 |
As of March 31, 2026, the Company had brokered deposits of $4 thousand and $12.5 million, or 0.1% of total deposits, as of December 31, 2025. Also included within deposits are public funds which are deposits from governments and municipalities that are subject to seasonality and are fully collateralized by either securities pledged or Federal Home Loan Bank of Dallas (“FHLB”) letters of credit. Public funds totaled $1.30 billion, or 14.5% of total deposits, as of March 31, 2026 compared to $1.22 billion, or 13.6% of total deposits, as of December 31, 2025.

X
- Definition Deposit Liabilities [Abstract] + References No definition available. + Details
Name: | stel_DepositLiabilitiesAbstract
Namespace Prefix: | stel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for deposit liabilities including data and tables. It may include a description of the entity's deposit liabilities, the aggregate amount of time deposits (including certificates of deposit) in denominations of $100,000 or more at the balance sheet date; the aggregate amount of any demand deposits that have been reclassified as loan balances, such as overdrafts, at the balance sheet date; deposits that are received on terms other than those in the normal course of business, the amount of accrued interest on deposit liabilities; securities, mortgage loans or other financial instruments that serve as collateral for deposits; for time deposits having a remaining term of more than one year, the aggregate amount of maturities for each of the five years following the balance sheet date; and the weighted average interest rate for all deposit liabilities held by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478353/942-405-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph e -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Publisher SEC + Details
Name: | us-gaap_DepositLiabilitiesDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration