XML 87 R74.htm IDEA: XBRL DOCUMENT v3.3.1.900
Commitments and Contingencies - Additional Information (Detail) - Medical And Hospitalization Insurance Program - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Loss Contingencies [Line Items]    
Minimum insurance premium $ 1,160,000 $ 1,170,000
Insurance reserves 0 $ 170,000
Liable for secured line of credit facility 1,250,000  
Maximum    
Loss Contingencies [Line Items]    
Liable for all claims per insured annual amount 70,000  
Liable for all claims per insured aggregate amount $ 1,700,000