Discontinued Operations	12 Months Ended
Dec. 31, 2020
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	16. DISCONTINUED OPERATIONS The Company’s discontinued operations did not have any sales in 2020, 2019 or 2018. In 2018, loss from discontinued operations net of taxes of $0.4 million were primarily related to changes in estimates associated with remediation of formerly owned property in Montana.

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Publisher FASB
-Name Accounting Standards Codification
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