Stock-Based Compensation - Narrative (Details) $ in Thousands			3 Months Ended		6 Months Ended
	May 28, 2020	May 25, 2016 shares	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($)	Jul. 15, 2020 shares
Stock Based Compensation Details [Line Items]
Reverse stock split, conversion ratio	0.10
Compensation expense | $			$ 100	$ 200	$ 200	$ 700
Unrecognized compensation cost, stock options | $			$ 1,700		$ 1,700
Number of options issued (in shares)					1,754,120
Non-vested shares (in shares)			1,587,013		1,587,013
Plan 2016
Stock Based Compensation Details [Line Items]
Shares approved and authorized (in shares)		4,000,000
Maximum number of shares to any individual (in shares)		1,000,000
Shares available for grant (in shares)			1,351,941		1,351,941
Amended 2016 Plan
Stock Based Compensation Details [Line Items]
Shares approved and authorized (in shares)							400,000
Additional shares authorized (in shares)		2,000,000
July 2020 Amendment
Stock Based Compensation Details [Line Items]
Shares approved and authorized (in shares)							4,400,000
Employee Stock Option
Stock Based Compensation Details [Line Items]
Compensation expense | $			$ 100	200	$ 100	600
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition					2 years 6 months 18 days
Number of options issued (in shares)					1,994,120
Restricted Stock Units (RSUs)
Stock Based Compensation Details [Line Items]
Shares granted (in shares)			247,573		1,627,038
Aggregate fair market value | $			$ 100		$ 1,300
Restricted Stock
Stock Based Compensation Details [Line Items]
Compensation expense | $			100	$ 10	100	$ 100
Unrecognized compensation costs, restricted stock and RSUs | $			$ 1,200		$ 1,200