XML 37 R27.htm IDEA: XBRL DOCUMENT
v3.21.2

INVESTMENT SECURITIES (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
INVESTMENT SECURITIES |
Investment Securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, 2021
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 158,456 |  | $ | 14,171 |  | $ | 777 |  | $ | 171,850
Agency collateralized mortgage obligations | ​ | ​ | 214,533 | ​ | ​ | 5,155 | ​ | ​ | 1,314 | ​ | ​ | 218,374
States and political subdivisions | ​ | ​ | 39,177 | ​ | ​ | 1,883 | ​ | ​ | 64 | ​ | ​ | 40,996
Small Business Administration securities | ​ | ​ | 18,653 | ​ | ​ | 967 | ​ | ​ | — | ​ | ​ | 19,620
​ |  | $ | 430,819 |  | $ | 22,176 |  | $ | 2,155 |  | $ | 450,840
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2020
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 151,106 |  | $ | 19,665 |  | $ | 831 |  | $ | 169,940
Agency collateralized mortgage obligations | ​ | ​ | 168,472 | ​ | ​ | 8,524 | ​ | ​ | 375 | ​ | ​ | 176,621
States and political subdivisions | ​ | ​ | 45,196 | ​ | ​ | 2,135 | ​ | ​ | 6 | ​ | ​ | 47,325
Small Business Administration securities | ​ | ​ | 20,033 | ​ | ​ | 1,014 | ​ | ​ | — | ​ | ​ | 21,047
​ |  | $ | 384,807 |  | $ | 31,338 |  | $ | 1,212 |  | $ | 414,933
​
Investments Classified by Contractual Maturity Date | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amortized |  | Fair
​ | ​ | Cost | ​ | Value
​ | ​ | (In Thousands)
One year or less |  | $ | — |  | $ | —
After one through five years | ​ | ​ | — | ​ | ​ | —
After five through ten years | ​ | ​ | 9,919 | ​ | ​ | 10,481
After ten years | ​ | ​ | 29,258 | ​ | ​ | 30,515
Securities not due on a single maturity date | ​ | ​ | 391,642 | ​ | ​ | 409,844
​ |  | $ | 430,819 |  | $ | 450,840
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 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)
Agency mortgage-backed securities |  | $ | 10,247 |  | $ | (777) |  | $ | — |  | $ | — |  | $ | 10,247 |  | $ | (777)
Agency collateralized mortgage obligations | ​ | ​ | 77,031 | ​ | ​ | (1,314) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 77,031 | ​ | ​ | (1,314)
States and political subdivisions securities | ​ | ​ | 5,855 | ​ | ​ | (64) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,855 | ​ | ​ | (64)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | $ | 93,133 |  | $ | (2,155) |  | $ | — |  | $ | — |  | $ | 93,133 |  | $ | (2,155)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2020
​ | ​ | 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)
Agency mortgage-backed securities |  | $ | 10,279 |  | $ | (831) |  | $ | — |  | $ | — |  | $ | 10,279 |  | $ | (831)
Agency collateralized mortgage obligations | ​ | ​ | 12,727 | ​ | ​ | (375) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 12,727 | ​ | ​ | (375)
Small Business Administration securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
States and political subdivisions securities | ​ | ​ | 1,164 | ​ | ​ | (6) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,164 | ​ | ​ | (6)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | $ | 24,170 |  | $ | (1,212) |  | $ | — |  | $ | — |  | $ | 24,170 |  | $ | (1,212)
​

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: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of fair value of investments in debt and equity securities in an unrealized loss position categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum: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: | nonnum: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