Premises and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Premises and Equipment
Land	$ 39,440	$ 40,652
Buildings and improvements	101,207	100,187
Furniture, fixtures and equipment	57,982	59,226
Operating leases right of use asset	7,715	8,536
Premises and equipment, gross	206,344	208,601
Less accumulated depreciation	73,611	69,431
Total Premises and Equipment	$ 132,733	$ 139,170

Amount of lessee's right to use underlying assets under operating lease.

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated depreciation and amortization, of property, plant, and equipment and operating lease right-of-use asset.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount, before accumulated depreciation and amortization, of property, plant, and equipment and operating lease right-of-use asset.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of building structures held as inventory including any additions, improvements, or renovations to those structures.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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