Leases - Future Maturities of Lease Liabilities (Details) $ in Thousands	Aug. 03, 2019 USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
2019	$ 475
2020	618
2021	0
2022	0
2023	0
Thereafter	0
Total lease payments	1,093
Less imputed interest	(35)
Total lease liabilities	1,058
Finance Lease Liabilities, Payments, Due [Abstract]
2019	53
2020	85
2021	60
2022	8
2023	0
Thereafter	0
Total lease payments	206
Less imputed interest	(12)
Total lease liabilities	194
Total Lease Liabilities, Payments, Due [Abstract]
2019	528
2020	703
2021	60
2022	8
2023	0
Thereafter	0
Total lease payments	1,299
Less imputed interest	(47)
Total lease liabilities	$ 1,252