LEASES - Future Minimum Lease Payments (Details) $ in Thousands	Sep. 26, 2020 USD ($)
Operating Leases
2020	$ 3,326
2021	10,391
2022	7,454
2023	7,878
2024	7,575
Thereafter	20,107
Total lease payments	56,731
Less: Effect of discounting to net present value	10,627
Present value of lease liabilities	46,104
Finance Leases
2020	62
2021	249
2022	249
2023	249
2024	330
Thereafter	0
Total lease payments	1,139
Less: Effect of discounting to net present value	141
Present value of lease liabilities	998
2020	3,388
2021	10,640
2022	7,703
2023	8,127
2024	7,905
Thereafter	20,107
Total lease payments	57,870
Less: Effect of discounting to net present value	10,768
Present value of lease liabilities	$ 47,102