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

Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2014 sqft	Mar. 31, 2013	Apr. 04, 2014 Subsequent Event [Member]	Apr. 22, 2014 Subsequent Event [Member] Rancho Cordova California [Member] Lease sqft
Subsequent Events [Line Items]
Lease Expiration Date			Apr. 30, 2015
Acquisition of our property, area	41,509			61,358
Acquisition of our property, value	$ 10,048,000			$ 8,200,000
Acquisition Expenses	52,000			50,000
Mortgage repayment	2,172,000	1,808,000		4,900,000
Lease term				10 years
Renew lease options				1
Renew the lease for additional periods				5 years
Annualized straight line rent escalations				$ 700,000