Leases - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Dec. 29, 2019
Right of use asset	$ 1,618,000		$ 2,200,000
Lease liability	1,642,000		$ 1,816,000
Total rent expense	147,000	$ 170,000
Premises
Right of use asset	2,400,000
Lease liability	$ 2,400,000
Minimum
Operating leases, lease terms	1 year
Finance leases, lease terms	2 years
Maximum
Operating leases, lease terms	5 years
Finance leases, lease terms	3 years