NON-CONTROLLING INTEREST (Notes)	3 Months Ended
Mar. 31, 2020
Noncontrolling Interest [Abstract]
NON-CONTROLLING INTEREST	NON-CONTROLLING INTEREST Through its ownership of Polaris Materials Corp., the Company previously held a 70% interest in Eagle Rock Materials Ltd. ("Eagle Rock"), which was originally formed to develop the Eagle Rock quarry project in British Columbia, Canada. During the three months ended March 31, 2020, all ownership interest in Eagle Rock reverted back to the Company such that Eagle Rock is now a wholly-owned subsidiary. This resulted in the elimination of the previously recorded $3.3 million Eagle Rock non-controlling interest.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-URI http://asc.fasb.org/topic&trid=2197479

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