Long-Term Debt - Average Daily Excess Availability for Preceding Fiscal Quarter (Detail)	9 Months Ended
	Oct. 01, 2017
Second Amendment to Credit Agreement [Member] | Level I [Member]
Line of Credit Facility [Line Items]
Average Daily Availability	Greater than or equal to $100,000,000
LIBO Rate Applicable Margin	1.25%
Base Rate Applicable Margin	0.25%
Second Amendment to Credit Agreement [Member] | Level II [Member]
Line of Credit Facility [Line Items]
Average Daily Availability	Less than $100,000,000 but greater than or equal to $40,000,000
LIBO Rate Applicable Margin	1.50%
Base Rate Applicable Margin	0.50%
Second Amendment to Credit Agreement [Member] | Level III [Member]
Line of Credit Facility [Line Items]
Average Daily Availability	Less than $40,000,000
LIBO Rate Applicable Margin	1.75%
Base Rate Applicable Margin	0.75%
Third Amendment to Credit Agreement [Member] | Level I [Member]
Line of Credit Facility [Line Items]
Average Daily Availability	Greater than or equal to $70,000,000
LIBO Rate Applicable Margin	1.25%
Base Rate Applicable Margin	0.25%
Third Amendment to Credit Agreement [Member] | Level II [Member]
Line of Credit Facility [Line Items]
Average Daily Availability	Less than $70,000,000
LIBO Rate Applicable Margin	1.375%
Base Rate Applicable Margin	0.50%