XML 64 R50.htm IDEA: XBRL DOCUMENT
v3.20.4

Derivatives and Hedging Activities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Derivatives and Hedging Activities |
Schedule of fair value of derivative Instruments and location in statements of financials | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Location in | ​ | Fair Value
​ | ​ | Consolidated Statements | ​ | December 31, | ​ | December 31,
​ | ​ | of Financial Condition |  | 2020 |  | 2019
​ | ​ | ​ | ​ | (In Thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivatives designated as hedging instruments | ​ |  |  | ​ |  |  | ​ |
Interest rate swap | ​ | Prepaid expenses and other assets | ​ | $ | — | ​ | $ | 30,056
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total derivatives designated as hedging instruments | ​ | ​ | ​ | $ | — | ​ | $ | 30,056
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivatives not designated as hedging instruments |  |  | ​ |  |  | ​ |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivative Assets |  |  | ​ |  |  | ​ |  |
Interest rate products |  | Prepaid expenses and other assets | ​ | $ | 5,062 | ​ | $ | 1,420
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total derivatives not designated as hedging instruments | ​ | ​ | ​ | $ | 5,062 | ​ | $ | 1,420
​ |  |  | ​ |  |  | ​ |  |
Derivative Liabilities |  |  | ​ |  |  | ​ |  |
Interest rate products |  | Accrued expenses and other liabilities | ​ | $ | 5,454 | ​ | $ | 1,547
​ |  |  | ​ |  |  | ​ |  |
Total derivatives not designated as hedging instruments | ​ | ​ | ​ | $ | 5,454 | ​ | $ | 1,547
​
Schedule of effect of cash flow hedge accounting on statements of comprehensive income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amount of Gain
​ | ​ | Recognized in AOCI
​ | ​ | Year Ended December 31
Cash Flow Hedges |  | 2020 |  | 2019 |  | 2018
​ |  | (In Thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate swap, net of income taxes | ​ | $ | 6,691 | ​ | $ | 13,857 |  | $ | 9,345
​
Schedule of effect of cash flow hedge accounting on statements of operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31
Cash Flow Hedges | ​ | 2020 | ​ | 2019 | ​ | 2018
​ | ​ | Interest | ​ | Interest | ​ | Interest | ​ | Interest | ​ | Interest | ​ | Interest
​ |  | Income |  | Expense |  | Income | ​ | Expense | ​ | Income | ​ | Expense
​ |  | (In Thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate swap, net of income taxes | ​ | $ | 7,676 | ​ | $ | — | ​ | $ | 3,082 | ​ | $ | — | ​ | $ | 673 | ​ | $ | —

X
- Definition Represents the textual narrative disclosure of Schedule of Derivative Instruments, Effect on Statements of Operations, during the indicated time period. + References No definition available. + Details
Name: | gsbc_ScheduleOfDerivativeInstrumentsEffectOnStatementsOfOperationsTableTextBlock
Namespace Prefix: | gsbc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration