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Equity-Based Compensation - Additional information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2017
Employee
$ / shares
shares
Feb. 29, 2016
Employee
$ / shares
shares
Jul. 02, 2016
USD ($)
Jul. 01, 2017
USD ($)
shares
Jul. 02, 2016
USD ($)
shares
Jan. 01, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Purchase of common stock through payroll deductions       85.00%    
Offering periods       2 years    
Purchase intervals of a series       6 months    
Maximum employee salary withholdings for purchase of common stock under the terms of the ESPP       15.00%    
Cumulative effect of change in accumulated deficit | $           $ 1,100,000
Number of shares issued under employee stock purchase plan       195,184    
RSU conversion ratio       100.00%    
Annual incentive plan stock awards granted       383,825    
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award, vesting period       4 years    
Number of share awards granted       334,221    
Annual incentive plan equity-based compensation expense | $     $ 129,000 $ 102,000 $ 243,000  
Number of participants in restricted stock grants awarded | Employee 33 34        
Annual incentive plan stock awards granted 134,000 266,000        
Weighted-average fair value of grants per share | $ / shares $ 9.63 $ 4.40        
Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of share awards granted         125,000  
Derived service period         2 years 9 months 18 days