The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Related Party Transaction (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Related Party Transaction
Accrual for potential penalties and interest			$ 0.2
Chief Executive Officer \| Affiliated Entity
Related Party Transaction
Due from related party	$ 1.4	$ 1.4		$ 1.8