Related Party Transactions (Details)		1 Months Ended	9 Months Ended
	Dec. 08, 2016	Aug. 31, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Related Party Transactions [Abstract]
Company contribution to a multi employer 401K plan at discretionary amount of employee's cash compensation, maximum percentage			6.00%
Company contribution to a multi employer 401K plan at discretionary amount of employee's cash compensation, amount			$ 270,600	$ 255,000
Deferred compensation, employee contribution, percentage			2.00%
Deferred compensation, company contribution, amount			$ 154,300	$ 129,000
Deferred compensation, company contribution, percentage			3	3
Deferred compensation, cumulative unfunded liability			$ 2,300,000		$ 2,100,000
Ancillary costs and expenses			6,300,000	$ 5,500,000
Liability due to The Saul Organization for the Company's share of these ancillary costs and expenses			$ 744,200		$ 860,700
Purchases from related party		$ 8,800,000
Percentage of annual increase in base rent			3.00%
Rent expense			$ 578,200	617,100
Insurance commissions and fees expense			$ 173,800	$ 279,100
BF Saul Real Estate Investment Trust | Affiliated Entity
Related Party Transaction [Line Items]
Automatic renewal period	12 months