LEASES - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Assets:
Operating lease assets	$ 37,768
Finance lease assets	1,120
Total lease assets	38,888
Current
Operating lease liabilities	7,768
Finance lease liabilities	185	$ 0
Non-current
Operating lease liabilities, non-current	42,200
Finance lease liabilities	950
Total lease liabilities	$ 51,103