v3.8.0.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Jan. 02, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Line Items]          
NOLs, limitations on use     The Exchange Transactions triggered a cumulative change in ownership of our common stock by more than 50% under Section 382 of the Internal Revenue Code as of March 22, 2017. This established an annual limitation on the usage of our pre-change net operating losses (“NOLs”) in the future.    
Reduction value of net operating losses deferred tax assets     $ 139,090,000   $ 756,000
Statutory tax rate     35.00% 35.00% 35.00%
Change in federal tax rate income tax expense benefit     $ 51,939,000    
Share-based compensation tax shortfall     1,279,000 $ 1,826,000 $ 1,939,000
Net deferred tax assets and liabilities recorded as long-term liability     82,100,000 5,600,000  
Valuation allowance on deferred tax assets after accounting for change in corporate federal income tax rate under tax cuts and job act     460,000 $ 756,000  
Federal [Member]          
Income Taxes [Line Items]          
Net operating loss carryforwards     $ 190,400    
Net operating loss carryforwards expiration start year     2030    
Net operating loss carryforwards expiration ending year     2037    
New Accounting Pronouncement, Early Adoption, Effect [Member]          
Income Taxes [Line Items]          
Increase in accumulated earnings and NOLs $ 1,700,000        
Scenario Forecast [Member]          
Income Taxes [Line Items]          
Statutory tax rate   21.00%