Adoption of ASC 842, "Leases" (Details) $ in Thousands		6 Months Ended
		Dec. 27, 2020 USD ($) Lease	Jun. 28, 2020 USD ($)	Jun. 30, 2019 USD ($)
Adoption of ASC 842, "Leases" [Abstract]
Percentage of change to total assets under operating leases				30.00%
Percentage of change to total liabilities under operating leases				64.00%
Balance Sheet [Abstract]
Operating lease right of use asset		$ 3,274	$ 3,567
Operating lease liabilities - current		658	632
Operating lease liabilities - long-term		$ 3,138	$ 3,471
Deferred rent recorded for lease incentives				$ 132
Deferred rent tenant improvements				302
Operating Lease, Description [Abstract]
Number of subleases | Lease		2
Components of Total Lease Expense [Abstract]
Operating lease cost		$ 367
Sublease income		(99)
Total lease expense, net of sublease income		268
Supplemental Cash Flow Information Related to Operating Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities		$ 388
Weighted Average Remaining Lease Term and Discount Rate [Abstract]
Weighted average remaining lease term		5 years
Weighted average discount rate		4.00%
Maturities of Operating Lease Liabilities [Abstract]
Remainder of fiscal year 2021		$ 398
2022		804
2023		813
2024		766
Thereafter		1,448
Total operating lease payments		4,229
Less: imputed interest		(433)
Total operating lease liability		$ 3,796
Information Technology Equipment [Member] | Minimum [Member]
Operating Lease, Description [Abstract]
Term of contract		1 year
Information Technology Equipment [Member] | Maximum [Member]
Operating Lease, Description [Abstract]
Term of contract		5 years
Office Agreements [Member] | Minimum [Member]
Operating Lease, Description [Abstract]
Term of contract		1 year
Office Agreements [Member] | Maximum [Member]
Operating Lease, Description [Abstract]
Term of contract		10 years
Restaurant Space Agreements [Member] | Minimum [Member]
Operating Lease, Description [Abstract]
Term of contract		1 year
Restaurant Space Agreements [Member] | Maximum [Member]
Operating Lease, Description [Abstract]
Term of contract		10 years
ASU 2016-02 [Member]
Balance Sheet [Abstract]
Operating lease right of use asset				3,862
Operating lease liabilities - current				528
Operating lease liabilities - long-term				3,347
ASU 2016-02 [Member] | Adoption [Member]
Balance Sheet [Abstract]
Operating lease right of use asset				3,428
Operating lease liabilities - current				528
Operating lease liabilities - long-term				3,347
ASU 2016-02 [Member] | Reclassification [Member]
Balance Sheet [Abstract]
Operating lease right of use asset	[1]			$ 434

[1] As of June 30, 2019, the Company had $132 thousand recorded within deferred rent for lease incentives incurred at the inception of the affected leases and $302 thousand in deferred rent tenant improvements. Upon adoption of the new standards update, these lease incentives were included within the lease liability.