Other Accrued Liabilities, Accrued State Sales and Use Tax (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) Assessment
Accrued State Sales and Use Tax [Abstract]
Interest amount	$ 171
Tax Period from March 2014 through February 2020 [Member]
Accrued State Sales and Use Tax [Abstract]
Number of assessments | Assessment	2
Estimated tax positions subject to audit	$ 1,484
Tax Period from June 2015 through March 2018 [Member]
Accrued State Sales and Use Tax [Abstract]
Assessment amount	$ 720