Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment (Detail)
12 Months Ended
Dec. 31, 2016
Building and Improvements [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 5 years
Building and Improvements [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 40 years
Furniture and Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 3 years
Furniture and Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 10 years
Vehicles [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 5 years
Vehicles [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 10 years
Software Development [Member]  
Property, Plant and Equipment [Line Items]  
Estimated life 3 years