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Related Party Transactions - Additional Information (Detail) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2012
Dec. 31, 2014
Sep. 04, 2012
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 $ 215,200 $ 191,600      
Deferred compensation, employee contribution, percentage 2.00%        
Deferred compensation, company contribution, amount $ 64,200 71,100      
Number of times the employer contribution is higher than the amount deferred by employees 300.00%        
Deferred compensation, cumulative unfunded liability $ 1,600,000     $ 1,800,000  
Ancillary costs and expenses 4,000,000 3,600,000      
Liability due to The Saul Organization for the Company's share of these ancillary costs and expenses 423,300     $ 543,000  
Extended lease expiration period     5 years    
Percentage of annual increase in base rent     3.00%    
Rent expense 451,700 414,000      
Insurance Commissions and fees expense $ 170,100 169,700      
Monthly consulting fees         $ 60,000
Consulting fees   $ 360,000