Debt - Additional Information (Detail)	9 Months Ended
	Sep. 29, 2018 USD ($) Agreement
Line of Credit Facility [Line Items]
Number of swap agreements | Agreement	2
Notional amount	$ 15,700,000
Description of variable rate basis	LIBOR rate plus 2.25%
Swap A [Member]
Line of Credit Facility [Line Items]
Notional amount	$ 10,000,000
Interest accrued percentage	4.16%
Effective date	Oct. 31, 2016
Swap B [Member]
Line of Credit Facility [Line Items]
Notional amount	$ 5,700,000
Interest accrued percentage	3.83%
Effective date	Oct. 31, 2016
Interest Rate Swap C
Line of Credit Facility [Line Items]
Fair value asset of swap agreement	$ 700,000