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Related Party Transactions (Details) - USD ($)
 1 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2016
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2012
Dec. 31, 2015
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   $ 255,000 $ 312,400    
Deferred compensation, employee contribution, percentage   2.00%      
Deferred compensation, company contribution, amount   $ 129,000 103,300    
Number of times the employer contribution is higher than the amount deferred by employees   300.00%      
Deferred compensation, cumulative unfunded liability   $ 2,000,000     $ 1,800,000
Ancillary costs and expenses   5,500,000 5,900,000    
Liability due to The Saul Organization for the Company's share of these ancillary costs and expenses   682,400     $ 655,000
Related Party Transaction, Purchases from Related Party $ 8,800,000        
Extended lease expiration period       5 years  
Percentage of annual increase in base rent       3.00%  
Rent expense   617,100 684,800    
Insurance commissions and fees expense   $ 279,100 $ 295,000