Gladstone Commercial Corporation Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Properties Acquired (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 sqft	Mar. 31, 2014 Allen, TX [Member] sqft Option	Mar. 31, 2014 Colleyville, TX [Member] sqft Option	Mar. 31, 2013 Egg Harbor Township, NJ [Member] sqft Option
Business Acquisition [Line Items]
Acquisition Date		Mar. 27, 2014	Mar. 27, 2014	Mar. 28, 2013
Square Footage	41,509	21,154	20,355	29,257
Lease Term		12 years	12 years	10 years
Renewal Options		4	4	1
Renewal Options Period		5 years	5 years	5 years
Total Purchase Price	$ 10,048	$ 5,525	$ 4,523	$ 5,650
Acquisition Expenses	52	26	26	149
Annualized Straight Line Rent	1,037	570	467	490
Debt Assumed	$ 6,330	$ 3,481	$ 2,849	$ 3,700