Income Taxes - Reconciliation of Income Tax Expense (benefit) at Statutory Federal Rate to Actual Income Tax Expense (benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Statutory (income) / expense	$ 7,187	$ (2,790)	$ 22,052
Nondeductible compensation	4,313	2,851	230
Meals, entertainment and travel expense	2,440	2,734	3,684
Noncontrolling interest – Piedmont	(1,826)	(1,238)	(1,692)
State income taxes, net of federal benefit	1,352	(376)	2,029
Valuation allowance change	1,290	1,566	2,718
Nondeductible fees and expenses	887	568	1,151
Adjustment for uncertain tax positions	(805)	694	(521)
Adjustment for federal tax legislation		(1,989)	(69,014)
Other, net	827	(151)	(478)
Income tax expense (benefit)	$ 15,665	$ 1,869	$ (39,841)
Statutory (income) / expense	21.00%	21.00%	35.00%
Nondeductible compensation	12.60%	(21.50%)	0.40%
Meals, entertainment and travel expense	7.10%	(20.60%)	5.80%
Noncontrolling interest – Piedmont	(5.30%)	9.30%	(2.70%)
State income taxes, net of federal benefit	4.00%	2.80%	3.20%
Valuation allowance change	3.80%	(11.80%)	4.30%
Nondeductible fees and expenses	2.60%	(4.30%)	1.80%
Adjustment for uncertain tax positions	(2.40%)	(5.20%)	(0.80%)
Adjustment for federal tax legislation		15.00%	(109.50%)
Other, net	2.40%	1.20%	(0.70%)
Income tax expense (benefit)	45.80%	(14.10%)	(63.20%)