Stock Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2018 shares	Sep. 29, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 29, 2018 USD ($) plan $ / shares shares	Sep. 30, 2017 USD ($) shares	Dec. 30, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock (in shares)		256,717		256,717		198,561
Options exercised (in shares)				0
Intrinsic value of options exercised | $					$ 700
Cash received from options exercised | $				$ 0	$ 1,511
Options granted (in shares)				141,777	0
Weighted-average grant date fair value for stock options (in dollars per share) | $ / shares		$ 1.76		$ 1.76
Compensation expense attributable to stock based compensation | $		$ 800	$ 1,400	$ 1,700	$ 4,100
Remaining unrecognized stock based compensation expense for non-vested stock options, restricted shares, performance share units and restricted shares units to be expensed in future periods | $		5,500		$ 5,500
Weighted average recognition period				1 year 7 months 6 days
Estimated value of future forfeitures | $		$ 500		$ 500
Treasury stock purchased in settlement of employees' tax obligations (in shares)				58,156
Treasury stock purchased in settlement of employees' tax obligations, value | $				$ 300
Treasury Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available to grant (in shares)		240,900		240,900
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Inducement awards granted (in shares)				287,439
Intrinsic value of shares vested | $				$ 700	1,400
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Inducement awards granted (in shares)				650,910
Performance share units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				0.00%
Performance share units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				150.00%
Restricted share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Inducement awards granted (in shares)				160,560
Intrinsic value of shares vested | $				$ 700	$ 100
2006 and 2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of previous equity incentive plans | plan				2
2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized for grant (in shares)	1,410,928
Shares available to grant (in shares)		2,932,155		2,932,155
Treasury stock (in shares)		240,900		240,900
Inducement Awards | Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Inducement awards granted (in shares)		104,510
Inducement Awards | Restricted share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Inducement awards granted (in shares)		31,250