XML 40 R29.htm IDEA: XBRL DOCUMENT v3.10.0.1
Organization and Significant Accounting Policies - Additional Information 1 (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 29, 2018
Mar. 30, 2018
Jun. 29, 2018
Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period, years     3 years
Granted stock units 0 174,900  
Weighted average fair value, granted   $ 19.57  
Vested shares withheld to satisfy withholding tax obligations     135,753
Vested shares issued net of tax withholdings     448,439
Stock-based compensation cost, net of estimated forfeitures, recognized     $ 11,500,000
Outstanding restricted stock 1,249,702   1,249,702
Aggregate fair value $ 20,700,000   $ 20,700,000
Weighted average remaining contractual term (in years)     1 year 1 month 6 days
Restricted Stock Units [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period, years     1 year 6 months
Restricted Stock Units [Member] | Employees [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period, years     3 years
Unit purchase price of Restricted Stock Units     $ 0
Restricted Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period, years     1 year
Restricted Stock Awards [Member] | Non-Employee Directors [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding restricted stock 38,010   38,010
Unamortized expense of company's unvested restricted stock awards $ 500,000   $ 500,000
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee common stock fair market value rate     95.00%
Performance Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted stock units 0 87,050  
Weighted average fair value, granted   $ 19.25  
Stock-based compensation cost, net of estimated forfeitures, recognized     $ 11,500,000
Outstanding restricted stock 1,249,702   1,249,702
Aggregate fair value $ 20,700,000   $ 20,700,000
Weighted average remaining contractual term (in years)     1 year 1 month 6 days
Performance Stock Units [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period, years     1 year 6 months