Annual report pursuant to Section 13 and 15(d)

Investments and Other Assets - Additional Information (Detail)

v3.6.0.2
Investments and Other Assets - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2016
Schedule of Cost-method Investments [Line Items]    
Purchase of investments   $ 10,000
Colorado Corporation [Member]    
Schedule of Cost-method Investments [Line Items]    
Cost method investment, ownership percentage 10.00%  
Purchase of investments $ 10,000