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

Real Estate and Intangible Assets - Summary of Properties Acquired (Detail)

Real Estate and Intangible Assets - Summary of Properties Acquired (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		1 Months Ended
	Dec. 31, 2014 sqft	Dec. 31, 2013 sqft	Jul. 31, 2004	Oct. 31, 2005
Business Acquisition [Line Items]
Square Footage (unaudited)	2,496,634good_AreaOfRealEstateProperties	1,085,129good_AreaOfRealEstateProperties
Total Purchase Price	$ 140,011good_PurchasePrice	$ 134,438good_PurchasePrice
Acquisition Expenses	1,292good_BusinessAcquisitionExpenses	761good_BusinessAcquisitionExpenses
Annualized Straight Line Rent	14,216good_AnnualizedStraightLineRent	12,399good_AnnualizedStraightLineRent
Debt Issued	62,231	71,795
Canton, North Carolina [Member]
Business Acquisition [Line Items]
Acquisition Date	Nov. 01, 2014
Square Footage (unaudited)	365,960
Lease Term	20 years
Renewal Options	2
Renewal Options Period	10 years
Total Purchase Price	5,550		5,200
Annualized Straight Line Rent	1,343
Clintonville, WI [Member]
Business Acquisition [Line Items]
Acquisition Date		Apr. 11, 2013
Square Footage (unaudited)		102,400
Lease Term		15 years
Total Purchase Price		3,250		5,300
Annualized Straight Line Rent		961
Monroe, MI [Member]
Business Acquisition [Line Items]
Acquisition Date	Dec. 23, 2014
Square Footage (unaudited)	535,500
Lease Term	8 years 6 months
Renewal Options	2
Renewal Options Period	5 years
Total Purchase Price	30,750
Acquisition Expenses	68
Annualized Straight Line Rent	2,523
Debt Issued	18,450
Egg Harbor Township, NJ [Member]
Business Acquisition [Line Items]
Acquisition Date		Mar. 28, 2013
Square Footage (unaudited)		29,257
Lease Term		10 years
Renewal Options		1
Renewal Options Period		5 years
Total Purchase Price		5,650
Acquisition Expenses		152
Annualized Straight Line Rent		490
Debt Issued		3,700
Vance, AL [Member]
Business Acquisition [Line Items]
Acquisition Date		May 09, 2013
Square Footage (unaudited)		170,000
Lease Term		10 years
Renewal Options		2
Renewal Options Period		5 years
Total Purchase Price		13,388
Acquisition Expenses		186
Annualized Straight Line Rent		1,173
Blaine, MN [Member]
Business Acquisition [Line Items]
Acquisition Date		May 10, 2013
Square Footage (unaudited)		92,275
Lease Term		7 years
Renewal Options		2
Renewal Options Period		5 years
Total Purchase Price		14,450
Acquisition Expenses		79
Annualized Straight Line Rent		1,475
Debt Issued		8,200
Austin, Texas [Member]
Business Acquisition [Line Items]
Acquisition Date		Jul. 09, 2013
Square Footage (unaudited)		320,000
Lease Term		7 years
Renewal Options		3
Renewal Options Period		3 years
Total Purchase Price		57,000
Acquisition Expenses		155
Annualized Straight Line Rent		4,641
Debt Issued		35,300
Allen, TX [Member]
Business Acquisition [Line Items]
Acquisition Date	Mar. 27, 2014	Jul. 10, 2013
Square Footage (unaudited)	21,154	115,200
Lease Term	12 years	9 years
Renewal Options	4	2
Renewal Options Period	5 years	5 years
Total Purchase Price	5,525	15,150
Acquisition Expenses	33	81
Annualized Straight Line Rent	570	1,478
Debt Issued	3,481	8,900
Englewood, CO [Member]
Business Acquisition [Line Items]
Acquisition Date		Dec. 11, 2013
Square Footage (unaudited)		99,797
Lease Term		8 years
Renewal Options		2
Renewal Options Period		5 years
Total Purchase Price		18,250
Acquisition Expenses		66
Annualized Straight Line Rent		1,497
Debt Issued		11,315
Novi, MI [Member]
Business Acquisition [Line Items]
Acquisition Date		Dec. 27, 2013
Square Footage (unaudited)		156,200
Lease Term		10 years
Renewal Options		1
Renewal Options Period		5 years
Total Purchase Price		7,300
Acquisition Expenses		42
Annualized Straight Line Rent		684
Debt Issued		4,380
Colleyville, TX [Member]
Business Acquisition [Line Items]
Acquisition Date	Mar. 27, 2014
Square Footage (unaudited)	20,355
Lease Term	12 years
Renewal Options	4
Renewal Options Period	5 years
Total Purchase Price	4,523
Acquisition Expenses	33
Annualized Straight Line Rent	467
Debt Issued	2,849
Rancho Cordova, CA [Member]
Business Acquisition [Line Items]
Acquisition Date	Apr. 22, 2014
Square Footage (unaudited)	61,358
Lease Term	10 years
Renewal Options	1
Renewal Options Period	5 years
Total Purchase Price	8,225
Acquisition Expenses	73
Annualized Straight Line Rent	902
Debt Issued	4,935
Coppell, TX [Member]
Business Acquisition [Line Items]
Acquisition Date	May 08, 2014
Square Footage (unaudited)	21,171
Lease Term	12 years
Renewal Options	4
Renewal Options Period	5 years
Total Purchase Price	5,838
Acquisition Expenses	26
Annualized Straight Line Rent	601
Debt Issued	3,816
Columbus, OH [Member]
Business Acquisition [Line Items]
Acquisition Date	May 13, 2014
Square Footage (unaudited)	114,786
Lease Term	9 years 6 months
Total Purchase Price	11,800
Acquisition Expenses	70
Annualized Straight Line Rent	1,278
Taylor, PA [Member]
Business Acquisition [Line Items]
Acquisition Date	Jun. 09, 2014
Square Footage (unaudited)	955,935
Lease Term	10 years
Renewal Options	4
Renewal Options Period	5 years
Total Purchase Price	39,000
Acquisition Expenses	730
Annualized Straight Line Rent	3,400
Debt Issued	22,600
Aurora, CO [Member]
Business Acquisition [Line Items]
Acquisition Date	Jul. 01, 2014
Square Footage (unaudited)	124,800
Lease Term	15 years
Renewal Options	2
Renewal Options Period	5 years
Total Purchase Price	8,300
Acquisition Expenses	93
Annualized Straight Line Rent	768
Indianapolis, IN [Member]
Business Acquisition [Line Items]
Acquisition Date	Sep. 03, 2014
Square Footage (unaudited)	86,495
Lease Term	11 years 6 months
Renewal Options	2
Renewal Options Period	5 years
Total Purchase Price	10,500
Acquisition Expenses	63
Annualized Straight Line Rent	1,504
Debt Issued	6,100
Denver, CO [Member]
Business Acquisition [Line Items]
Acquisition Date	Oct. 31, 2014
Square Footage (unaudited)	189,120
Lease Term	10 years
Renewal Options	2
Renewal Options Period	10 years
Total Purchase Price	10,000
Acquisition Expenses	103
Annualized Straight Line Rent	$ 860