Income Taxes - Uncertain Tax Positions (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Changes in Unrecognized Tax Benefits [Roll Forward]
Balance, beginning of period	$ 1,061
Increases related to prior year tax positions	84
Decreases due to lapse of statute of limitations	(20)
Decreases related to Nutrisystem divestiture	(1,125)
Balance, end of period	$ 1,100