Subsequent Event	12 Months Ended
Dec. 31, 2021
Subsequent Event.
Subsequent Event	(10) Subsequent Events On January 31, 2022, the Company declared an increased regular quarterly cash dividend of $0.20 per share on the Company’s common stock. This dividend is payable on March 18, 2022 to shareholders of record at the close of business on February 25, 2022. On February 9, 2022, the Company acquired Mill Creek Dolomite, LLC, a dolomite mining and production company located in Mill Creek, Oklahoma, for $5.9 million cash, subject to adjustment.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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