Summary of Significant Accounting Policies (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Health insurance maximum risk of loss liability per employee insurance plan (up to)	$ 600
Health insurance maximum aggregate amount of risk of loss liability for employee insurance plans (up to)	$ 200
Common stock equivalents (in shares)	(429)	(307)
Anti-dilutive common stock equivalents (in shares)	0	(332)