XML 36 R27.htm IDEA: XBRL DOCUMENT
v3.22.2.2

INVESTMENT SECURITIES (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2022
INVESTMENT SECURITIES |
Schedule of investment securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2022
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 331,657 |  | $ | — |  | $ | 43,402 |  | $ | 288,255
Agency collateralized mortgage obligations | ​ | ​ | 81,907 | ​ | ​ | — | ​ | ​ | 11,131 | ​ | ​ | 70,776
States and political subdivisions | ​ | ​ | 68,089 | ​ | ​ | 11 | ​ | ​ | 5,771 | ​ | ​ | 62,329
Small Business Administration securities | ​ | ​ | 68,148 | ​ | ​ | — | ​ | ​ | 6,701 | ​ | ​ | 61,447
​ |  | $ | 549,801 |  | $ | 11 |  | $ | 67,005 |  | $ | 482,807
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2021
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 219,624 |  | $ | 10,561 |  | $ | 744 |  | $ | 229,441
Agency collateralized mortgage obligations | ​ | ​ | 204,332 | ​ | ​ | 2,443 | ​ | ​ | 2,498 | ​ | ​ | 204,277
States and political subdivisions | ​ | ​ | 38,440 | ​ | ​ | 1,618 | ​ | ​ | 43 | ​ | ​ | 40,015
Small Business Administration securities | ​ | ​ | 26,802 | ​ | ​ | 497 | ​ | ​ | — | ​ | ​ | 27,299
​ |  | $ | 489,198 |  | $ | 15,119 |  | $ | 3,285 |  | $ | 501,032
Schedule of amortized cost and fair values of securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2022
​ | ​ | ​ | ​ | ​ | ​ | Amortized | ​ | Gross | ​ | Gross | ​ | ​
​ | ​ | Amortized | ​ | Fair Value | ​ | Carrying | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ | ​ | Cost | ​ | Adjustment | ​ | Value | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | (In Thousands)
HELD-TO-MATURITY SECURITIES: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency mortgage-backed securities | ​ | $ | 74,140 | ​ | $ | 3,161 | ​ | $ | 77,301 | ​ | $ | — | ​ | $ | 10,353 | ​ | $ | 66,948
Agency collateralized mortgage obligations | ​ |  | 126,054 | ​ |  | (3,107) | ​ |  | 122,947 | ​ |  | — | ​ |  | 14,658 | ​ |  | 108,289
States and political subdivisions | ​ |  | 6,252 | ​ |  | (15) | ​ |  | 6,237 | ​ |  | — | ​ |  | 1,063 | ​ |  | 5,174
​ | ​ | $ | 206,446 | ​ | $ | 39 | ​ | $ | 206,485 | ​ | $ | — | ​ | $ | 26,074 | ​ | $ | 180,411
Schedule of amortized cost and fair value of available-for-sale and held-to-maturity securities by contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available-for-Sale | ​ | Held-to-Maturity
​ | ​ | Amortized | ​ | Fair | ​ | Amortized |  | Fair
​ |  | Cost |  | Value |  | Carrying Value |  | Value
​ | ​ | (In Thousands)
One year or less | ​ | $ | — | ​ | $ | — | ​ | $ | — |  | $ | —
After one through two years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
After two through three years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
After three through four years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
After four through five years | ​ | ​ | 2,287 | ​ | ​ | 2,264 | ​ | ​ | — | ​ | ​ | —
After five through fifteen years | ​ | ​ | 11,955 | ​ | ​ | 11,455 | ​ | ​ | 2,577 | ​ | ​ | 2,108
After fifteen years | ​ | ​ | 53,847 | ​ | ​ | 48,610 | ​ | ​ | 3,660 | ​ | ​ | 3,066
Securities not due on a single maturity date | ​ | ​ | 481,712 | ​ | ​ | 420,478 | ​ | ​ | 200,248 | ​ | ​ | 175,237
​ | ​ | $ | 549,801 | ​ | $ | 482,807 | ​ | $ | 206,485 |  | $ | 180,411
Schedule of fair value and unrealized loss for available-for-sale securities and held-to-maturity securities | ​
​ | ​ | September 30, 2022
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 281,226 |  | $ | (42,158) |  | $ | 7,027 |  | $ | (1,244) |  | $ | 288,253 |  | $ | (43,402)
Agency collateralized mortgage obligations | ​ | ​ | 38,814 | ​ | ​ | (4,581) | ​ | ​ | 31,962 | ​ | ​ | (6,550) | ​ | ​ | 70,776 | ​ | ​ | (11,131)
States and political subdivisions securities | ​ | ​ | 59,847 | ​ | ​ | (5,564) | ​ | ​ | 1,236 | ​ | ​ | (207) | ​ | ​ | 61,083 | ​ | ​ | (5,771)
Small Business Administration securities | ​ | ​ | 61,447 | ​ | ​ | (6,701) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 61,447 | ​ | ​ | (6,701)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | $ | 441,334 |  | $ | (59,004) |  | $ | 40,225 |  | $ | (8,001) |  | $ | 481,559 |  | $ | (67,005)
​
​ | ​ | September 30, 2022
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
​ |  | (In Thousands)
HELD-TO-MATURITY SECURITIES: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Agency mortgage-backed securities | ​ | $ | 59,095 | ​ | ​ | (8,249) | ​ | ​ | 7,852 | ​ | ​ | (2,104) | ​ | ​ | 66,947 | ​ | ​ | (10,353)
Agency collateralized mortgage obligations | ​ |  | 62,540 | ​ |  | (6,614) | ​ |  | 45,750 | ​ |  | (8,044) | ​ |  | 108,290 | ​ |  | (14,658)
States and political subdivisions securities | ​ |  | 1,761 | ​ |  | (301) | ​ |  | 3,413 | ​ |  | (762) | ​ |  | 5,174 | ​ |  | (1,063)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 123,396 | ​ | $ | (15,164) | ​ | $ | 57,015 | ​ | $ | (10,910) | ​ | $ | 180,411 | ​ | $ | (26,074)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2021
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities | ​ | $ | 47,769 | ​ | $ | (388) | ​ | $ | 10,583 | ​ | $ | (356) | ​ | $ | 58,352 | ​ | $ | (744)
Agency collateralized mortgage obligations | ​ | ​ | 92,727 | ​ | ​ | (1,588) | ​ | ​ | 16,298 | ​ | ​ | (910) | ​ | ​ | 109,025 | ​ | ​ | (2,498)
States and political subdivisions securities | ​ | ​ | 6,537 | ​ | ​ | (43) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 6,537 | ​ | ​ | (43)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | $ | 147,033 | ​ | $ | (2,019) |  | $ | 26,881 | ​ | $ | (1,266) |  | $ | 173,914 | ​ | $ | (3,285)
​

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and amortized cost (held-to-maturity), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References No definition available. + Details
Name: | gsbc_DebtSecuritiesAvailableForSaleAndHeldToMaturityUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | gsbc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity) and fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References No definition available. + Details
Name: | gsbc_DebtSecuritiesHeldToMaturityAndAvailableForSaleSecuritiesTableTextBlock
Namespace Prefix: | gsbc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the textual narrative disclosure of Investment Securities, during the indicated time period. + References No definition available. + Details
Name: | gsbc_InvestmentSecuritiesTextBlock
Namespace Prefix: | gsbc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration