INCOME TAXES - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 24, 2020	Jun. 26, 2019	Jun. 24, 2020	Jun. 26, 2019
Income Tax Disclosure [Abstract]
Expected U.S. federal income taxes at statutory rate	$ (5,065)	$ 2,567	$ (5,274)	$ 3,754
Expected U.S. federal income taxes at statutory rate, percentage	21.00%	21.00%	21.00%	21.00%
State and local income taxes, net of federal benefit	$ (1,576)	$ 823	$ (1,701)	$ 1,242
State and local income taxes, net of federal benefit, percentage	6.50%	6.70%	6.80%	6.90%
Foreign withholding taxes	$ (325)	$ 627	$ 210	$ 969
Foreign withholding taxes, percentage	1.30%	5.10%	(0.80%)	5.40%
Tax credits	$ (393)	$ (1,446)	$ (427)	$ (1,822)
Tax credits, percentage	1.60%	(11.70%)	1.70%	(10.20%)
Non-controlling interest	$ 501	$ (623)	$ 421	$ (947)
Non-controlling interest, percentage	(2.00%)	(5.10%)	(1.70%)	(5.30%)
Tax effect of change in basis related to ASC 842 adoption	$ 0	$ 0	$ 0	$ 1,161
Tax effect of change in basis related to ASC 842 adoption, percent	0.00%	0.00%	0.00%	6.50%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ 749	$ (895)	$ 749	$ (1,261)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(3.10%)	(7.30%)	(3.00%)	(7.10%)
Other	$ 17	$ (3)	$ 17	$ 1
Other, percentage	0.00%	0.10%	(0.10%)	0.00%
Income tax expense	$ (6,092)	$ 1,050	$ (6,005)	$ 3,097
Effective income tax rate reconciliation (in percentage)	25.30%	8.60%	23.90%	17.30%

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