SUBSEQUENT EVENTS	9 Months Ended
Sep. 30, 2021
SUBSEQUENT EVENTS.
SUBSEQUENT EVENTS	10. SUBSEQUENT EVENTS On October 25, 2021, the Company announced that it entered into a definitive merger agreement Wilks Brothers, LLC (“Wilks”). Pursuant to the merger agreement, a subsidiary of Wilks commenced a tender offer to acquire all of the Company’s outstanding common stock for $2.34 per share in cash (the “Offer”) on November 1, 2021. Subject to the closing of the Offer, the merger agreement also contemplates that Wilks will acquire any shares of the Company’s common stock that are not tendered into the Offer at the same price per share through a second-step merger, which will be completed as soon as practicable following the closing of the Offer, subject to the approval of at least 80% of the outstanding shares of the Company’s common stock.

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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