Commitments And Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies [Abstract]
Commitments And Contingencies	9. COMMITMENTS AND CONTINGENCIES We are subject to various claims, disputes, and administrative and legal matters incidental to our past and current business activities.  As a result, contingencies arise resulting from an existing condition, situation, or set of circumstances involving an uncertainty as to the realization of a possible loss. Estimated loss contingencies are accrued only if the loss is probable and the amount of the loss can be reasonably estimated. With respect to a particular loss contingency, it may be probable that a loss has occurred but the estimate of the loss is a wide range. If we deem an amount within the range to be a better estimate than any other amount within the range, that amount will be accrued. However, if no amount within the range is a better estimate than any other amount, the minimum amount of the range is accrued. While we believe that none of these claims, disputes, administrative, and legal matters will have a material adverse effect on our financial position, these matters are uncertain and we cannot at this time determine whether the financial impact, if any, of these matters will be material to our results of operations in the period in which such matters are resolved or a better estimate becomes available.