XML 109 R39.htm IDEA: XBRL DOCUMENT
v3.21.1

Real Estate - Summary of Costs Incurred (Details) - Mergers $ in Thousands | Mar. 01, 2021 USD ($)
--- | ---
Schedule of Asset Acquisition [Line Items] |
Termination fee of the CCIT II advisory agreement | $ 28,439
Advisory and valuation fees | 4,699
Legal, accounting and tax fees | 5,115
Other fees | 5,346
Total Merger-related fees | $ 43,599

X
- Definition Asset Acquisition, Merger Expenses + References No definition available. + Details
Name: | gcnl_AssetAcquisitionMergerExpenses
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset Acquisition, Merger Expenses, Advisory and Valuation Fees + References No definition available. + Details
Name: | gcnl_AssetAcquisitionMergerExpensesAdvisoryandValuationFees
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset Acquisition, Merger Expenses, Legal Accounting and Tax Fees + References No definition available. + Details
Name: | gcnl_AssetAcquisitionMergerExpensesLegalAccountingandTaxFees
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset Acquisition, Merger Expenses, Other Fees + References No definition available. + Details
Name: | gcnl_AssetAcquisitionMergerExpensesOtherFees
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset Acquisition, Termination Fee + References No definition available. + Details
Name: | gcnl_AssetAcquisitionTerminationFee
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition [Line Items] for Schedule of Asset Acquisition [Table] + References No definition available. + Details
Name: | gcnl_ScheduleofAssetAcquisitionLineItems
Namespace Prefix: | gcnl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | gcnl_AssetAcquisitionAxis=gcnl_MergersCCITIIAndGCEARAssetAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |