Gladstone Commercial Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Organization, Basis of Presentation and Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Mortgage Notes Payable and Line of Credit - Company's Mortgage Notes Payable and Line of Credit (Detail)

v3.3.1.900

Mortgage Notes Payable and Line of Credit - Company's Mortgage Notes Payable and Line of Credit (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Property	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Encumbered properties \| Property	97
Carrying Value	$ 531,070	$ 502,599
Stated Interest Rates	One month LIBOR was approximately 0.43%
Libor rate	0.43%
Line of Credit [Member]
Debt Instrument [Line Items]
Encumbered properties \| Property	22
Carrying Value	$ 45,300	43,300
Stated Interest Rates	LIBOR + 2.50%
Libor rate	2.50%
Scheduled Maturity Dates	Jul. 08, 2018
Premiums and Discounts (Net) [Member]
Debt Instrument [Line Items]
Carrying Value	$ 392	707
Fixed Rate Mortgage Loans [Member]
Debt Instrument [Line Items]
Encumbered properties \| Property	66
Carrying Value	$ 427,334	450,392
Variable Rate Mortgage Loans [Member]
Debt Instrument [Line Items]
Encumbered properties \| Property	9
Carrying Value	$ 33,044	8,200
Stated Interest Rates	Variable rate mortgage notes payable vary from one month LIBOR + 2.15% to one month LIBOR + 2.25%
Mortgage Notes Payable [Member]
Debt Instrument [Line Items]
Encumbered properties \| Property	75
Carrying Value	$ 460,770	$ 459,299
Term Loan Facility [Member]
Debt Instrument [Line Items]
Carrying Value	$ 25,000
Stated Interest Rates	LIBOR + 2.45%
Libor rate	2.45%
Scheduled Maturity Dates	May 10, 2020

- Definition

Number of existing encumbered properties.

+ References

No definition available.

+ Details

Name:	good_NumberOfExistingEncumberedProperties
Namespace Prefix:	good_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_PremiumsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=good_FixedRateMortgageLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=good_VariableRateMortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=good_MortgageNotesPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=good_TermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: