10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________________________________________

FORM 10-Q

_______________________________________________________

x	Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the Quarterly Period Ended September 30, 2018
or
¨	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from ______ to ______

Commission File Number: 001-34025

INTREPID POTASH, INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware	26-1501877
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1001 17th Street, Suite 1050, Denver, Colorado	80202
(Address of principal executive offices)	(Zip Code)

(303) 296-3006

(Registrant’s telephone number, including area code)

707 17^th Street, Suite 4200, Denver, Colorado 80202

(Former address, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files.) Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ¨	Accelerated filer x	Non-accelerated filer ¨
Smaller reporting company ¨	Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

As of October 23, 2018, the registrant had outstanding 131,106,900 shares of common stock, par value $0.001 per share.

INTREPID POTASH, INC.

TABLE OF CONTENTS

	Page
PART I - FINANCIAL INFORMATION	1
ITEM 1. Condensed Consolidated Financial Statements (Unaudited)	1
Condensed Consolidated Balance Sheets	1
Condensed Consolidated Statements of Operations	2
Condensed Consolidated Statements of Stockholders' Equity	3
Condensed Consolidated Statements of Cash Flows	4
Notes to Condensed Consolidated Financial Statements	5
ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	16
ITEM 3. Quantitative and Qualitative Disclosures about Market Risk	29
ITEM 4. Controls and Procedures	29
PART II - OTHER INFORMATION	31
ITEM 1. Legal Proceedings	31
ITEM 1A. Risk Factors	31
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds	31
ITEM 3. Defaults upon Senior Securities	31
ITEM 4. Mine Safety Disclosures	31
ITEM 5. Other Information	32
ITEM 6. Exhibits	32
Signatures	33

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PART I - FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

INTREPID POTASH, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share amounts)

	September 30,			December 31,
	2018			2017
ASSETS
Cash and cash equivalents	$	37,214		$	1,068
Accounts receivable:
Trade, net	18,289			17,777
Other receivables, net	3,801			762
Refundable income taxes	—			2,663
Inventory, net	77,394			83,126
Prepaid expenses and other current assets	5,443			6,088
Total current assets	142,141			111,484
Property, plant, equipment, and mineral properties, net	350,211			364,542
Long-term parts inventory, net	29,915			30,611
Other assets, net	3,502			3,955
Total Assets	$	525,769		$	510,592
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable:
Trade	$	7,794		$	11,103
Related parties	28			28
Income taxes payable	210			—
Accrued liabilities	10,183			8,074
Accrued employee compensation and benefits	5,543			4,317
Advances on credit facility	—			3,900
Current portion of long-term debt	10,000			10,000
Other current liabilities	10,239			65
Total current liabilities	43,997			37,487
Long-term debt, net	49,537			49,437
Asset retirement obligation	22,727			21,476
Other non-current liabilities	—			102
Total Liabilities	116,261			108,502
Commitments and Contingencies
Common stock, $0.001 par value; 400,000,000 shares authorized;
128,232,942 and 127,646,530 shares outstanding
at September 30, 2018, and December 31, 2017, respectively	128			128
Additional paid-in capital	649,082			645,813
Retained deficit	(239,702		)	(243,851		)
Total Stockholders' Equity	409,508			402,090
Total Liabilities and Stockholders' Equity	$	525,769		$	510,592

See accompanying notes to these condensed consolidated financial statements.

1

INTREPID POTASH, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Sales	$	36,528		$	34,029		$	140,736		$	127,691
Less:
Freight costs	6,196			6,160			24,862			22,867
Warehousing and handling costs	2,192			2,046			7,067			7,013
Cost of goods sold	19,180			19,555			84,580			85,249
Lower-of-cost-or-market inventory adjustments	—			667			781			4,808
Gross Margin	8,960			5,601			23,446			7,754
Selling and administrative	5,121			4,623			15,281			13,683
Accretion of asset retirement obligation	417			390			1,251			1,168
Restructuring expense	—			—			—			266
Care and maintenance expense	119			293			366			1,404
Other operating (income) expense	(934		)	467			(65		)	2,758
Operating Income (Loss)	4,237			(172		)	6,613			(11,525		)
Other Income (Expense)
Interest expense, net	(864		)	(1,994		)	(2,620		)	(10,631		)
Interest income	—			—			99			5
Other income	23			128			103			514
Income (Loss) Before Income Taxes	3,396			(2,038		)	4,195			(21,637		)
Income Tax (Expense) Benefit	(46		)	130			(46		)	117
Net Income (Loss)	$	3,350		$	(1,908	)	$	4,149		$	(21,520	)
Weighted Average Shares Outstanding:
Basic	128,233			126,602			127,921			111,768
Diluted	130,894			126,602			130,983			111,768
Earnings (Loss) Per Share:
Basic	$	0.03		$	(0.02	)	$	0.03		$	(0.19	)
Diluted	$	0.03		$	(0.02	)	$	0.03		$	(0.19	)

See accompanying notes to these condensed consolidated financial statements.

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INTREPID POTASH, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(In thousands, except share amounts)

	Common Stock			Additional Paid-in Capital			Retained Deficit			Total Stockholders' Equity
	Shares	Amount
Balance, December 31, 2017	127,646,530	$	128	$	645,813		$	(243,851	)	$	402,090
Net income	—	—		—			4,149			4,149
Stock-based compensation	—	—		3,593			—			3,593
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting	556,158	—		(371		)	—			(371		)
Exercise of stock options	30,254	—		47			—			47
Balance, September 30, 2018	128,232,942	$	128	$	649,082		$	(239,702	)	$	409,508

See accompanying notes to these condensed consolidated financial statements.

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INTREPID POTASH, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Nine Months Ended September 30,
	2018			2017
Cash Flows from Operating Activities:
Net income (loss)	$	4,149		$	(21,520	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion, and accretion	25,089			25,890
Amortization of deferred financing costs	550			1,596
Stock-based compensation	3,593			2,678
Lower-of-cost-or-market inventory adjustments	781			4,808
(Gain) loss on disposal of assets	(84		)	1,749
Allowance for doubtful accounts	100			420
Allowance for parts inventory obsolescence	15			(20		)
Changes in operating assets and liabilities:
Trade accounts receivable, net	(612		)	(7,944		)
Other receivables, net	(3,039		)	(360		)
Refundable income taxes	2,663			1,379
Inventory, net	5,631			(2,086		)
Prepaid expenses and other current assets	649			4,867
Accounts payable, accrued liabilities, and accrued employee compensation and benefits	3,076			(143		)
Income tax payable	210			—
Other liabilities	10,174			(781		)
Net cash provided by operating activities	52,945			10,533
Cash Flows from Investing Activities:
Additions to property, plant, equipment, and mineral properties	(12,668		)	(6,226		)
Proceeds from sale of property, plant, equipment, and mineral properties	92			5,554
Net cash used in investing activities	(12,576		)	(672		)
Cash Flows from Financing Activities:
Issuance of common stock, net of transaction costs	—			59,130
Repayments of long-term debt	—			(75,000		)
Proceeds from short-term borrowings on credit facility	13,500			9,000
Repayments of short-term borrowings on credit facility	(17,400		)	(9,000		)
Debt issuance costs	—			(128		)
Employee tax withholding paid for restricted stock upon vesting	(371		)	(158		)
Proceeds from exercise of stock options	47			—
Net cash used in financing activities	(4,224		)	(16,156		)
Net Change in Cash, Cash Equivalents and Restricted Cash	36,145			(6,295		)
Cash, Cash Equivalents and Restricted Cash, beginning of period	1,549			8,470
Cash, Cash Equivalents and Restricted Cash, end of period	$	37,694		$	2,175
Supplemental disclosure of cash flow information
Net cash paid (refunded) during the period for:
Interest	$	1,629		$	9,088
Income taxes	$	(2,828	)	$	(1,496	)
Accrued purchases for property, plant, equipment, and mineral properties	$	915		$	242

See accompanying notes to these condensed consolidated financial statements.

4

INTREPID POTASH, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 — COMPANY BACKGROUND

We are a diversified mineral company that delivers potassium, magnesium, sulfur, salt, and water products. We are the only producer of muriate of potash ("potassium chloride" or "potash") in the United States and are one of two producers of langbeinite ("sulfate of potash magnesia"), which we market and sell as Trio^®. We sell potash and Trio^® primarily into the agricultural market as a fertilizer. We also sell these products into the animal feed market as a nutritional supplement and sell potash into the industrial market as a component in drilling and fracturing fluids for oil and gas wells and other industrial inputs. We also sell water, primarily for industrial uses such as in the oil and gas industry. In addition, we sell by-products including salt, magnesium chloride, and brine, which are recorded as a credit to cost of goods sold. These by-product credits represented approximately 11% and 8% of total cost of goods sold for the nine months ended September 30, 2018, and 2017, respectively.

We produce potash from three solution mining facilities: our HB solar solution mine in Carlsbad, New Mexico, our solar solution mine in Moab, Utah, and our solar brine recovery mine in Wendover, Utah. We also operate the North compaction facility in Carlsbad, New Mexico, which compacts and granulates product from the HB mine. We produce Trio^® from our conventional underground East mine in Carlsbad, New Mexico.

"Intrepid," "our," "we," or "us," means Intrepid Potash, Inc. and its consolidated subsidiaries.

Note 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Financial Statement Presentation—Our unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, all adjustments, consisting of normal recurring accruals considered necessary for a fair presentation of interim financial information, have been included. These condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC on February 27, 2018.

Except for the accounting policies for revenue recognition that were updated as a result of adopting Accounting Standards Codification ("ASC") Topic 606 Revenue from Contracts with Customers ("ASC 606"), there have been no changes to our significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2017.

Revenue Recognition—The majority of our revenue is derived from contract sales that are of a short-term nature. We account for revenue in accordance with ASC 606, which we adopted on January 1, 2018, using the full retrospective method. Comparative information has been adjusted as if ASC 606 was in effect during the comparative period. See Note 16 "Recently Adopted Accounting Pronouncements" for further discussion of the adoptions, including the retrospective adjustment made to our 2017 financial information.

Performance Obligations: A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC 606. The contract's transaction price is allocated to the performance obligations and recognized as revenue when the performance obligations are satisfied. Generally, our performance obligations are satisfied when we ship product or deliver water from our facility to the customer. Shipping and handling charges are accounted for as a fulfillment cost and, as such, are not considered to be a separate performance obligation. Revenue from sales to customers at a single point in time accounted for all our revenue for each of the three and nine months ended September 30, 2018, and 2017.

Contract Estimates: In certain circumstances, we may sell product to customers where the sales price is variable. For such sales, we estimate the sales price we expect to realize based on the facts and circumstances for each sale, including

5

historical experience, and recognize revenue to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal compared to the cumulative revenue recognized under the contract.

Contract Balances: The timing of revenue recognition, billings, and cash collection may result in contract assets or contract liabilities. For certain contracts, the customer has agreed to pay us before we have satisfied our performance obligations. Customer payments received before we have satisfied our performance obligations are accounted for as a contract liability. As of September 30, 2018, we had $9.8 million of contract liabilities, which are included in "Other current liabilities" on the condensed consolidated balance sheet. We had no contract liabilities as of December 31, 2017. Our contract liability activity for the three and nine months ended September 30, 2018, is shown below:

	Three Months Ended			Nine Months Ended
(amounts in thousands)	September 30, 2018			September 30, 2018
Beginning balance	$	7,278		$	—
Additions	6,156			13,915
Recognized as revenue during period	(3,597		)	(4,078		)
Ending balance	$	9,837		$	9,837

Disaggregation of Revenue: In the following table, revenue is disaggregated by our primary products.

	Three Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	22,170	$	20,711	Point in time
Trio	10,320		11,349		Point in time
Water and other	4,038		1,969		Point in time
Total	$	36,528	$	34,029
	Nine Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	77,416	$	75,745	Point in time
Trio	50,402		48,557		Point in time
Water and other	12,918		3,389		Point in time
Total	$	140,736	$	127,691

Reclassifications of Prior Period Presentation—Certain prior period amounts have been reclassified in order to conform to the current period presentation. These reclassifications had no effect on the reported results of operations.

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Note 3 — EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period. For purposes of determining diluted earnings per share, basic weighted-average common shares outstanding is adjusted to include potentially dilutive securities, including restricted stock, stock options, and performance units. The treasury-stock method is used to measure the dilutive impact of potentially dilutive shares. Potentially dilutive shares are excluded from the diluted weighted-average shares outstanding computation in periods in which they have an anti-dilutive effect. The following table shows the calculation of basic and diluted earnings (loss) per share (in thousands, except per share amounts):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018		2017			2018		2017
Net income (loss)	$	3,350	$	(1,908	)	$	4,149	$	(21,520	)
Basic weighted-average common shares outstanding	128,233		126,602			127,921		111,768
Add: Dilutive effect of restricted stock	1,741		—			2,098		—
Add: Dilutive effect of stock options	920		—			964		—
Diluted weighted-average common shares outstanding	130,894		126,602			130,983		111,768
Basic	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)
Diluted	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)

The following table shows the shares that have an anti-dilutive effect and are excluded from the diluted weighted-average shares outstanding computations (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Anti-dilutive effect of restricted stock	278	3,697	139	3,270
Anti-dilutive effect of stock options outstanding	1,748	2,326	1,354	2,032
Anti-dilutive effect of performance units	—	63	—	63

Note 4— CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Total cash, cash equivalents and restricted cash, as shown on the condensed consolidated statements of cash flows are included in the following accounts at September 30, 2018, and 2017:

	September 30, 2018		September 30, 2017
Cash and cash equivalents	$	37,214	$	1,694
Restricted cash included in other long-term assets	480		481
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	37,694	$	2,175

Restricted cash included in other long-term assets on the balance sheet represents amounts whose use is restricted by contractual agreements with the Bureau of Land Management or the State of Utah as security to fund future reclamation obligations at our sites.

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Note 5— INVENTORY AND LONG-TERM PARTS INVENTORY

The following summarizes our inventory, recorded at the lower of weighted-average cost or estimated net realizable value, as of September 30, 2018, and December 31, 2017 (in thousands):

	September 30, 2018		December 31, 2017
Finished goods product inventory	$	40,283	$	54,577
In-process mineral inventory	27,981		19,822
Total product inventory	68,264		74,399
Current parts inventory, net	9,130		8,727
Total current inventory, net	77,394		83,126
Long-term parts inventory, net	29,915		30,611
Total inventory, net	$	107,309	$	113,737

Parts inventories are shown net of any required allowances. At September 30, 2018, and December 31, 2017, allowances for parts inventory obsolescence were $2.6 million and $4.2 million, respectively.

As a result of routine assessments of the lower of weighted-average cost or estimated net realizable value of our finished goods product inventory, we recorded charges of $0.7 million for the three months ended September 30, 2017. For the three months ended September 30, 2018, we recorded no such charges. During the nine months ended September 30, 2018, and 2017, we recorded charges of $0.8 million and $4.8 million, respectively.

Note 6 — PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES

Property, plant, equipment, and mineral properties were comprised of the following (in thousands):

	September 30, 2018			December 31, 2017
Buildings and plant	$	80,450		$	79,757
Machinery and equipment	239,158			234,861
Vehicles	5,322			4,835
Office equipment and improvements	13,875			12,637
Ponds and land improvements	58,492			56,194
Total depreciable assets	$	397,297		$	388,284
Accumulated depreciation	(160,931		)	(141,818		)
Total depreciable assets, net	$	236,366		$	246,466
Mineral properties and development costs	$	138,984		$	138,841
Accumulated depletion	(29,758		)	(26,840		)
Total depletable assets, net	$	109,226		$	112,001
Land	$	519		$	519
Construction in progress	$	4,100		$	5,556
Total property, plant, equipment, and mineral properties, net	$	350,211		$	364,542

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We incurred the following expenses for depreciation, depletion, and accretion, including expenses capitalized into inventory, for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Depreciation	$	7,021	$	7,030	$	20,919	$	21,270
Depletion	742		850		2,919		3,452
Accretion	417		390		1,251		1,168
Total incurred	$	8,180	$	8,270	$	25,089	$	25,890

Note 7 — DEBT

Senior Notes—As of September 30, 2018, we had outstanding an aggregate of $60 million of senior notes (the "Notes") consisting of the following series:

• $24 million of Senior Notes, Series A, due April 16, 2020 (the "Series A Notes");

• $18 million of Senior Notes, Series B, due April 14, 2023 (the "Series B Notes"); and

• $18 million of Senior Notes, Series C, due April 16, 2025 (the "Series C Notes").

We are required to prepay $10 million in principal of the Notes, plus accrued interest and a make-whole amount, on or before December 31, 2018.

The agreement governing the Notes contains certain financial covenants, including the following:

• For the quarter ended September 30, 2018, we were required to maintain a minimum fixed charge coverage amount of negative $10 million. Thereafter, we are required to maintain a minimum fixed charge coverage ratio that starts at 0.25 to 1.0 for the quarter ending December 31, 2018, and increases to 1.3 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with these financial covenants as our fixed charge coverage amount was $25.5 million and our fixed charge coverage ratio was 7.9 to 1.0.

• For the quarter ended September 30, 2018, we were allowed a maximum leverage ratio of 9.5 to 1.0. The maximum allowable leverage ratio decreases to 7.0 to 1.0 for the quarter ending December 31, 2018, and further decreases each quarter until it reaches 3.5 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with this financial covenant as our leverage ratio was 1.4 to 1.0.

Fixed charge coverage amount, fixed charge coverage ratio, and leverage ratio are calculated in accordance with the agreement governing the Notes.

For the three and nine months ended September 30, 2018, the interest rates on the Notes were 3.73% for the Series A Notes, 4.63% for the Series B Notes and 4.78% for the Series C Notes. These rates represent the lowest interest rates available under the Notes. The interest rates may adjust upward if we do not continue to meet certain financial covenants.

We have granted to the collateral agent for the noteholders a first lien on substantially all of our non-current assets and a second lien on substantially all of our current assets. We are required to offer to prepay the Notes with the proceeds of dispositions of certain specified property and with the proceeds of certain equity issuances, as set forth in the agreement. The obligations under the Notes are unconditionally guaranteed by several of our subsidiaries.

We were in compliance with the applicable covenants under the agreement governing the Notes as of September 30, 2018.

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Our outstanding long-term debt, net, as of September 30, 2018, and December 31, 2017, was as follows (in thousands):

	September 30, 2018			December 31, 2017
Senior Notes	$	60,000		$	60,000
Less current portion of long-term debt	(10,000		)	(10,000		)
Less deferred financing costs	(463		)	(563		)
Long-term debt, net	$	49,537		$	49,437

Credit Facility—We maintain an asset-based revolving credit facility with Bank of Montreal. In October 2018, we amended the credit facility to extend its maturity date from October 31, 2019, to October 31, 2023, to increase the amount available to be borrowed from $35 million to $50 million, and to make certain other changes. The credit facility now allows us to borrow up to $50 million subject to monthly limits based on our inventory and receivables. We can use up to $10 million of borrowings under the credit facility to make payments on the Notes.

Borrowings under the credit facility after the amendment bear interest at LIBOR (London Interbank Offered Rate) plus an applicable margin of 1.50% to 2.00% per annum, based on average availability under the credit facility. We have granted to Bank of Montreal a first lien on substantially all of our current assets and a second lien on substantially all of our non-current assets. The obligations under the credit facility are unconditionally guaranteed by several of our subsidiaries.

We regularly borrow and repay amounts under the facility for near-term working capital needs and may do so in the future. During the three months ended September 30, 2018, we had no borrowings under the facility. During the nine months ended September 30, 2018, we borrowed $13.5 million and repaid $17.4 million under the facility. As of September 30, 2018, we had no borrowings outstanding and $3.8 million in outstanding letters of credit under the facility. Including the outstanding letters of credit, we had $25.7 million available to be borrowed under the facility as of September 30, 2018. We were in compliance with the applicable covenants under the facility as of September 30, 2018.

Interest Expense—Interest expense is recorded net of any capitalized interest associated with investments in capital projects. We incurred gross interest expense of $0.9 million and $2.1 million for the three months ended September 30, 2018, and 2017, respectively. For the nine months ended September 30, 2018. and 2017, we incurred gross interest expense of $2.7 million and $10.8 million, respectively.

Amounts included in interest expense for the three and nine months ended September 30, 2018, and 2017, are as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Interest on Notes and credit facility	$	704		$	1,382		$	2,155		$	6,180
Make-whole payments	—			448			—			3,001
Amortization of deferred financing costs	183			246			550			1,596
Gross interest expense	887			2,076			2,705			10,777
Less capitalized interest	(23		)	(82		)	(85		)	(146		)
Interest expense, net	$	864		$	1,994		$	2,620		$	10,631

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Note 8 — FINANCIAL INFORMATION FOR SUBSIDIARY GUARANTORS OF POSSIBLE FUTURE

PUBLIC DEBT

Intrepid Potash, Inc., as the parent company, has no independent assets or operations, and operations are conducted solely through its subsidiaries. Cash generated from operations is held at the parent-company level as cash on hand and totaled $37.2 million and $1.1 million at September 30, 2018, and December 31, 2017, respectively. If one or more of our wholly-owned operating subsidiaries guarantee public debt securities in the future, those guarantees will be full and unconditional and will constitute the joint and several obligations of the subsidiary guarantors. Our other subsidiaries are minor. There are no restrictions on our ability to obtain cash dividends or other distributions of funds from the subsidiary guarantors, except those imposed by applicable law.

Note 9 — ASSET RETIREMENT OBLIGATION

We recognize an estimated liability for future costs associated with the abandonment and reclamation of our mining properties. A liability for the fair value of an asset retirement obligation and a corresponding increase to the carrying value of the related long-lived asset are recorded as the mining operations occur or the assets are acquired.

Our asset retirement obligation is based on the estimated cost to abandon and reclaim the mining operations, the economic life of the properties, and federal and state regulatory requirements. The liability is discounted using credit adjusted risk-free rate estimates at the time the liability is incurred or when there are upward revisions to estimated costs. The credit adjusted risk-free rates used to discount our abandonment liabilities range from 6.9% to 9.7%. Revisions to the liability occur due to construction of new or expanded facilities, changes in estimated abandonment costs or economic lives, or if federal or state regulators enact new requirements regarding the abandonment or reclamation of mines.

Following is a table of the changes to our asset retirement obligation for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Asset retirement obligation, at beginning of period	$	22,310	$	20,754	$	21,476	$	19,976
Accretion of discount	417		390		1,251		1,168
Total asset retirement obligation, at end of period	$	22,727	$	21,144	$	22,727	$	21,144

The undiscounted amount of asset retirement obligation was $59.5 million as of September 30, 2018.

Note 10 — COMMON STOCK

In May 2017, we established an at-the-market offering program, which gives us the capacity to issue up to $40 million of our common stock. We sold no shares under the at-the-market offering program during the first nine months of 2018. We have remaining capacity to issue and sell up to $37.8 million of additional shares of common stock under the program.

Note 11 — COMPENSATION PLANS

Equity Incentive Compensation Plan—Our Board of Directors and stockholders adopted a long-term incentive compensation plan called the Intrepid Potash, Inc. Amended and Restated Equity Incentive Plan (the "Plan"). We have issued common stock, restricted stock, performance units, and non-qualified stock option awards under the Plan. At September 30, 2018, there were approximately 2.3 million shares available for issuance under the Plan.

For the nine months ended September 30, 2018, we granted 0.5 million shares of restricted stock and 1.6 million non-qualified stock options to executive officers, other key employees and members of our Board of Directors. These awards vest one to three years from the date of the grant and, in some cases, contain performance-vesting or market conditions.

As of September 30, 2018, the following awards were outstanding under the Plan:

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	Outstanding as of September 30, 2018
Restricted Stock	2,873,953
Non-qualified Stock Options	3,556,548

Total share-based compensation expense was $1.3 million and $1.0 million for the three months ended September 30, 2018, and 2017, respectively. For the nine months ended September 30, 2018, and 2017, total share-based compensation expense was $3.6 million and $2.7 million, respectively. As of September 30, 2018, we had $6.7 million of total remaining unrecognized compensation expense related to awards, that will be expensed through 2021.

Note 12 — INCOME TAXES

Our anticipated annual tax rate is impacted primarily by the amount of taxable income associated with each jurisdiction in which our income is subject to income tax, permanent differences between the financial statement carrying amounts and tax bases of assets and liabilities.

During the three and nine months ended September 30, 2018, we incurred an immaterial amount of income tax expense, while during the three and nine months ended September 30, 2017, we recognized an immaterial amount of income tax benefit. Our effective tax rate for the three and nine months ended September 30, 2018 was 2% and 1%, respectively. Our effective tax rate for the three and nine months ended September 30, 2017, was 6% and 1%, respectively. Our effective tax rates differed from the statutory rate during each period primarily due to the valuation allowance established to offset our deferred tax assets.

As of September 30, 2018, we do not believe it is more likely than not that we will fully realize the benefit of our deferred tax assets. As such, we maintained a full valuation allowance against our net deferred tax assets as of September 30, 2018, and December 31, 2017.

Note 13 — COMMITMENTS AND CONTINGENCIES

Reclamation Deposits and Surety Bonds—As of September 30, 2018, and December 31, 2017, we had $19.1 million of security placed principally with the State of Utah and the Bureau of Land Management for eventual reclamation of our various facilities. Of this total requirement, as of September 30, 2018, and December 31, 2017, $0.5 million consisted of long-term restricted cash deposits reflected in "Other assets, net" on the condensed consolidated balance sheets and $18.6 million was secured by surety bonds issued by an insurer. The surety bonds are held in place by an annual fee paid to the issuer.

We may be required to post additional security to fund future reclamation obligations as reclamation plans are updated or as governmental entities change requirements.

Legal—In February 2015, Mosaic Potash Carlsbad Inc. (“Mosaic”) filed a complaint and application for preliminary injunction and permanent injunction against Steve Gamble and us in the Fifth Judicial District Court for the County of Eddy in the State of New Mexico. Mr. Gamble is a former employee of Intrepid and Mosaic. In August 2015, the court denied Mosaic’s application for preliminary injunction. In July 2016, Mosaic filed a second complaint against Mr. Gamble and us in US District Court for the District of New Mexico. In January 2018, the two lawsuits were consolidated into one lawsuit pending in the US District Court for the District of New Mexico. Mosaic alleges against us violations of the New Mexico Uniform Trade Secrets Act, tortious interference with contract relating to Mr. Gamble’s separation of employment from Mosaic, violations of the Computer Fraud and Abuse Act, conversion, and civil conspiracy relating to the alleged misappropriation of Mosaic’s confidential information and related actions.  Mosaic seeks monetary relief of an unspecified amount, including damages for actual loss and unjust enrichment, exemplary damages, attorneys’ fees, and injunctive relief and has alleged that it has spent hundreds of millions of dollars to research and develop its alleged trade secrets.  The lawsuit is progressing through discovery.  We are vigorously defending against the lawsuit. Because this matter is at an early stage, we are unable to reasonably estimate the potential amount of loss, if any.

We are also subject to other claims and legal actions in the ordinary course of business. Legal costs are expensed as incurred. While there are uncertainties in predicting the outcome of any claim or legal action, we believe that the ultimate

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resolution of these other claims or actions is not reasonably likely to have a material adverse effect on our financial condition, results of operations, or cash flows.

Other—In May 2018, one of our water customers claimed that its water-metering equipment was not working properly in March and April 2018, thereby resulting in the customer overreporting its water use. At that time, we estimated that it was probable that the customer overreported its water used, and estimated the range of overreported amounts to be between $0.6 million to $1.7 million. As a result, we recorded a $0.6 million contingent liability in the second quarter of 2018. During the third quarter of 2018, we determined the overreported amount was $1.5 million, which will be credited to future water deliveries.

Future Operating Lease Commitments—We have operating leases for land, mining and other operating equipment, offices, and railcars, with original terms ranging up to 30 years.

Rental and lease expenses for the three months ended September 30, 2018, and 2017, were $1.0 million and $1.4 million, respectively. Rental and lease expenses for the nine months ended September 30, 2018, and 2017, were $2.9 million and $4.4 million, respectively.

Note 14 — FAIR VALUE

We measure our financial assets and liabilities in accordance with ASC Topic 820, Fair Value Measurements and Disclosures.

As of September 30, 2018, and December 31, 2017, our cash consisted of bank deposits. Other financial assets and liabilities including accounts receivable, refundable income taxes, accounts payable, accrued liabilities, and advances on our credit facility are carried at cost which approximates fair value because of the short-term nature of these instruments.

As of September 30, 2018, and December 31, 2017, the estimated fair value of our outstanding Notes was $57.2 million and $58.8 million, respectively. The fair value of our Notes is estimated using a discounted cash flow analysis based on current borrowing rates for debt with similar remaining maturities and ratings (a Level 2 input) and is designed to approximate the amount at which the instruments could be exchanged in an arm's-length transaction between knowledgeable willing parties.

Note 15 — BUSINESS SEGMENTS

We have two business segments: potash and Trio^®. Our reportable segments are determined by management based on a number of factors, including the types of potassium-based fertilizer produced, production processes, markets served, and the financial information available to our chief operating decision maker. We evaluate performance based on the gross margins of the respective business segments and do not allocate corporate selling and administrative expenses, among others, to the respective segments. Total assets are not presented for each reportable segment as they are not reviewed by, nor otherwise regularly provided to, the chief operating decision maker. All sales are to external customers. Water sales and corporate expenses are included in "Other."

Information for each segment is provided in the following tables (in thousands):

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Three Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	22,170	$	10,320		$	4,038	$	36,528
Less: Freight costs	3,060		3,136			—		6,196
Warehousing and handling costs	1,207		984			1		2,192
Cost of goods sold	10,814		6,378			1,988		19,180
Lower-of-cost-or-market inventory adjustments	—		—			—		—
Gross Margin (Deficit)	$	7,089	$	(178	)	$	2,049	$	8,960
Depreciation, depletion, and accretion incurred1	$	6,288	$	1,668		$	224	$	8,180
Three Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	20,711	$	11,349		$	1,969	$	34,029
Less: Freight costs	2,864		3,296			—		6,160
Warehousing and handling costs	1,173		873			—		2,046
Cost of goods sold	11,534		7,861			160		19,555
Lower-of-cost-or-market inventory adjustments	113		554			—		667
Gross Margin (Deficit)	$	5,027	$	(1,235	)	$	1,809	$	5,601
Depreciation, depletion, and accretion incurred1	$	6,567	$	1,687		$	16	$	8,270
Nine Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	77,416	$	50,402		$	12,918	$	140,736
Less: Freight costs	9,795		15,067			—		24,862
Warehousing and handling costs	3,773		3,285			9		7,067
Cost of goods sold	45,511		35,756			3,313		84,580
Lower-of-cost-or-market inventory adjustments	—		781			—		781
Gross Margin (Deficit)	$	18,337	$	(4,487	)	$	9,596	$	23,446
Depreciation, depletion, and accretion incurred1	$	19,556	$	5,038		$	495	$	25,089
Nine Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	75,745	$	48,557		$	3,389	$	127,691
Less: Freight costs	9,401		13,466			—		22,867
Warehousing and handling costs	4,051		2,962			—		7,013
Cost of goods sold	50,776		34,205			268		85,249
Lower-of-cost-or-market inventory adjustments	146		4,662			—		4,808
Gross Margin (Deficit)	$	11,371	$	(6,738	)	$	3,121	$	7,754
Depreciation, depletion, and accretion incurred1	$	20,685	$	5,091		$	114	$	25,890

¹Depreciation, depletion, and accretion incurred for potash and Trio^® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

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Note 16 — RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

Pronouncements Recently Adopted

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, as amended by ASU No. 2016-12, Revenue from Contracts with Customers(Topic 606), which requires revenue to be recognized based on the amount an entity is expected to be entitled to for promised goods or services provided to customers. The standard also requires expanded disclosures regarding contracts with customers. This standard became effective for us beginning January 1, 2018.

Our revenue predominantly continues to be recognized when products are shipped from our manufacturing facilities. Under the new revenue standard, for certain sales where revenue was previously deferred, such as sales in which the final price was not fixed and determinable, we now recognize revenue when the product is shipped using the sales price we expect to realize. In conjunction with our adoption of ASC 606 on January 1, 2018, primarily related to variable pricing contracts, we recorded a net increase to opening retained deficit of $0.5 million.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows(Topic 230) which is intended to clarify and align how certain cash receipts and cash payments are presented and classified in the statement of cash flows where there is currently diversity in practice. ASU No. 2016-15 specifically addresses eight classification issues within the statement of cash flows including debt prepayments or debt extinguishment costs; proceeds from the settlement of insurance claims; and separately identifiable cash flows and application of the predominance principle. This standard became effective for us beginning January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

    In October 2016, the FASB issued ASU No. 2016-16, Income Taxes(Topic 740) which became effective for us beginning January 1, 2018. This standard requires us to recognize at the transaction date the income tax consequences of intercompany asset transfers other than inventory. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash which became effective for us beginning January 1, 2018. This standard requires us to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows and will no longer require transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. As a result of including restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts presented on the condensed consolidated statement of cash flows, net cash flows for the nine months ended September 30, 2017, decreased by $3.5 million.

Pronouncements Issued But Not Yet Adopted

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires, among other things, lessees to recognize lease assets and liabilities on their balance sheets for those leases classified as operating leases under previous generally accepted accounting principles. These assets and liabilities must be recorded generally at the present value of the contracted lease payments, and the cost of the lease must be allocated over the lease term on a straight-line basis. This guidance is effective for us for annual and interim periods in fiscal years beginning after December 15, 2018. A modified retrospective transition method is required, applying the new standard to all leases existing at the date of initial application. We may choose to use either the effective date or the beginning of the earliest comparative period presented in the financial statements as the date of initial application. We currently expect to adopt the new standard on January 1, 2019, and use the effective date as our date of initial application. Consequently, financial information will not be updated, and disclosures required under the new standard will not be provided for dates before January 1, 2019.

The new standard provides a number of optional practical expedients in transition. We are continuing to evaluate the practical expedients provided.

We are continuing to work on ensuring we have identified all potential leases. We estimate additional assets and liabilities recorded after adoption of ASU No. 2016-02, Leases (Topic 842), will be less than $10 million.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes the way entities recognize impairment of many financial assets by requiring immediate recognition of estimated credit losses expected to occur over their remaining life. This guidance is effective for us for annual and interim periods in fiscal years beginning after December 15, 2018. Because we have historically experienced minimal bad debt expense related to our trade receivables, we do not believe the adoption of this new standard will have a material impact on our condensed consolidated financial statements.

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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION

AND RESULTS OF OPERATIONS

This Quarterly Report on Form 10-Q contains forward‑looking statements within the meaning of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the Securities Act of 1933, as amended (the "Securities Act"). These forward‑looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. All statements in this Quarterly Report on Form 10-Q other than statements of historical fact are forward‑looking statements. Forward-looking statements include statements about our future results of operations and financial position, our business strategy and plans, and our objectives for future operations, among other things. In some cases, you can identify these statements by forward‑looking words, such as "estimate," "expect," "anticipate," "project," "plan," "intend," "believe," "forecast," "foresee," "likely," "may," "should," "goal," "target," "might," "will," "could," "predict," and "continue." Forward‑looking statements are only predictions based on our current knowledge, expectations, and projections about future events.

These forward-looking statements are subject to a number of risks, uncertainties, and assumptions, including the following:

• changes in the price, demand, or supply of our products;

• our ability to successfully identify and implement any opportunities to grow our business whether through expanded sales of Trio^®, water, by-products, and other non-potassium related products or other growth or revenue diversification activities;

• challenges to our water rights;

• our ability to comply with the terms of our senior notes and revolving credit facility, including the underlying covenants, to avoid a default under those agreements;

• our ability to sell Trio^® internationally and manage risks associated with international sales, including pricing pressure and freight costs;

• the costs of, and our ability to successfully execute, any strategic projects;

• declines or changes in agricultural production or fertilizer application rates;

• declines in the use of potassium-related products or water by oil and gas companies in their drilling operations;

• further write-downs of the carrying value of assets, including inventories;

• circumstances that disrupt or limit production, including operational difficulties or variances, geological or geotechnical variances, equipment failures, environmental hazards, and other unexpected events or problems;

• changes in reserve estimates;

• currency fluctuations;

• adverse changes in economic conditions or credit markets;

• the impact of governmental regulations, including environmental and mining regulations, the enforcement of those regulations, and governmental policy changes;

• adverse weather events, including events affecting precipitation and evaporation rates at Intrepid's solar solution mines;

• increased labor costs or difficulties in hiring and retaining qualified employees and contractors, including workers with mining, mineral processing, or construction expertise;

• changes in the prices of raw materials, including chemicals, natural gas, and power;

• our ability to obtain and maintain any necessary governmental permits or leases relating to current or future operations;

• interruptions in rail or truck transportation services, or fluctuations in the costs of these services;

• our inability to fund necessary capital investments; and

• the other risks, uncertainties, and assumptions described in Item 1A. Risk Factors of our Annual Report on Form 10-K for the year ended December 31, 2017, as updated by this report.

In addition, new risks emerge from time to time. It is not possible for our management to predict all risks that may cause actual results to differ materially from those contained in any forward-looking statements we may make.

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In light of these risks, uncertainties, and assumptions, the future events and trends discussed in this Quarterly Report on Form 10-Q may not occur and actual results could differ materially and adversely from those anticipated or implied in these forward-looking statements. As a result, you should not place undue reliance on these forward-looking statements. We undertake no duty to update or revise publicly any forward-looking statements to conform those statements to actual results or to reflect new information or future events.

Throughout this report, we refer to average net realized sales price per ton, which is a non-GAAP measure that we calculate as sales less freight costs then divided by sales tons. More information about this measure, including a reconciliation of this measure to the most directly comparable GAAP measure, is below under the heading "Non-GAAP Financial Measure."

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Company Overview

We are a diversified mineral company that delivers potassium, magnesium, sulfur, salt and water products. We are the only producer of potash in the United States and are one of two producers of langbeinite, which we market and sell as Trio^®. We sell potash and Trio^® primarily into the agricultural market as a fertilizer. We also sell these products into the animal feed market as a nutritional supplement and sell potash into the industrial market as a component in drilling and fracturing fluids for oil and gas wells and other industrial inputs. We also sell water, primarily for industrial uses such as in the oil and gas industry. In addition, we sell by-products including salt, magnesium chloride, water, and brine, which are recorded as a credit to cost of goods sold. These by-product credits represented approximately 11% and 8% of total cost of goods sold for the nine months ended September 30, 2018, and 2017, respectively.

We produce potash from three solution mining facilities: our HB solar solution mine in Carlsbad, New Mexico, our solar solution mine in Moab, Utah, and our solar brine recovery mine in Wendover, Utah. We also operate the North compaction facility in Carlsbad, New Mexico, which compacts and granulates product from the HB mine. We produce Trio^® from our conventional underground East mine in Carlsbad, New Mexico.

We have additional opportunities to develop mineralized deposits of potash in New Mexico, as well as to continue the optimization of our processing plants. These opportunities include additional solution mining activities, additional recoveries of langbeinite, development of by-product and water markets, and acceleration of production from our reserves.

We routinely post important information about us and our business, including information about upcoming investor presentations, on our website under the Investor Relations tab. We encourage investors and other interested parties to enroll on our website to receive automatic email alerts or RSS feeds for new postings. Our website is intrepidpotash.com.

Significant Business Trends and Activities

Our financial results have been, or are expected to be, impacted by several significant trends and activities, which are described below. We expect that these trends will continue to impact our results of operations, cash flows, and financial position.

• Trio^® pricing and demand. Trio^® pricing began to rebound in the third quarter of 2018 with the average net realized sales price at $200 per ton, which is the highest we have realized since the first quarter of 2017. This price was an increase of 7% as compared to the third quarter of 2017. Domestic pricing has been trending up for the last couple of quarters, partially offset by increased freight rates. We instituted another domestic price increase that took effect in the fourth quarter of 2018. As a result, we expect the domestic Trio^® average net realized sales price per ton to continue to trend up slightly into the first quarter of 2019.

Trio^® sales volume decreased 16% during the third quarter of 2018, compared to the third quarter of 2017, primarily related to reduced international sales volume as we continue to focus on a price-over-volume strategy. For the nine-month period ended September 30, 2018, our sales volume increased slightly compared to the nine-month period ended September 30, 2017, as we gained market share and added new warehouses in newly developed domestic markets. Domestic sales accounted for 81% of the total Trio^® sales volume for the first nine months of 2018, compared to 69% for the first nine months of 2017. At current price levels, we expect domestic Trio^® sales to continue to represent a majority of Trio^® sales volume.

We experience seasonality in domestic Trio^® demand, with more purchases coming in the first and second quarters. In turn, we generally have increased inventory levels in the third and fourth quarters in anticipation of expected demand for the following year. We continue to operate our facilities at production levels that approximate expected demand and allow us to manage inventory levels.

• Potash pricing and demand. Potash pricing for the third quarter of 2018 increased 11% compared to the same period last year due to strong global demand and delays in anticipated increased capacity from other producers. Our average net realized sales price per ton for potash in the third quarter of 2018 was $258 compared to $232 in the third quarter of 2017. Additional price increases were announced late in the third quarter and early in the fourth quarter of this year. Accordingly, we expect potash pricing to remain strong for the remainder of 2018 and into the first quarter of 2019.

During the third quarter of 2018 as compared to the prior-year period, we sold a higher percentage of our total potash tons into the industrial market as we continued to expand our offerings and marketing efforts for industrial potash products. The increase in industrial sales resulted in a decrease in our proportionate sales into the agricultural market. We expect the majority of our potash sales will continue to be made into the agricultural market, although we continue to work to develop additional industrial markets.

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Potash prices are a significant driver of profitability for our business. Pricing of our potash is influenced principally by the price established by our competitors. The interaction of global potash supply and demand, ocean, land, and barge freight rates, and currency fluctuations also influence pricing.

The specific timing of when farmers apply potash remains highly weather dependent and varies across the numerous growing regions within the U.S. The timing of potash sales is significantly influenced by the marketing programs of potash producers, as well as storage volumes closer to the farm gate. We also experience seasonality in potash demand, similar to domestic Trio^®. The combination of these items results in variability in potash sales and shipments, thereby increasing volatility of sales volumes from quarter to quarter and season to season.

• Water and by-product sales. We continue to diversify our sources of income by expanding sales of water and by-products, particularly to service the oil and gas markets near our operating plants. In the first nine months of 2018, water sales increased to $12.5 million compared to $3.4 million during the same period of 2017. In addition, we sold $2.2 million of water that was accounted for as by-product credits to our cost of goods sold during the first nine months of 2018 compared to $0.3 million during the same period of 2017.

We have put in place a diverse set of arrangements aimed at generating a long-term recurring revenue stream from water sales. This includes a pre-arranged water commitment of $15 million per year for five years that began in 2018. With respect to this commitment, the customer is required to pay us $15 million per year in quarterly installments even if the customer does not take the underlying water at that time. Cash amounts received from the customer before the underlying water is delivered are accounted for as a contract liability on our balance sheet until the water is delivered.

We expect to receive $28 million to $35 million in cash related to water in 2018. We received $23 million of cash relating to water in the nine months ended September 30, 2018, and had $2.2 million in accounts receivable related to water as of the end of that period. As of September 30, 2018, we had $9.1 million in contract liabilities for water, representing cash received for future water deliveries.

Water rights in New Mexico are subject to a stated purpose and place of use, and our water rights were originally issued for uses relating to our mining operations. To sell water under these rights for oil and gas development, we must apply for a permit from the New Mexico Office of the State Engineer ("OSE") to change the purpose and/or place of use of the underlying water rights. The OSE reviews and makes a determination as to the validity of the right and if it determines the requested change will not negatively impact other valid interests, the OSE can issue a preliminary authorization for the change. The preliminary authorization allows for water sales to begin immediately, subject to repayment if the underlying water rights were ultimately found to be invalid. Third parties may protest the preliminary authorization at minimal cost and frequently do so. Once protested, the OSE is required to hold a hearing to determine if the preliminary authorization was appropriate. Virtually all of our water sales are being made under preliminary authorizations issued by the OSE. Third parties have protested these preliminary authorizations, and we expect the OSE to hold a hearing on the protests in 2019. In the meantime, we are working with OSE and the protesting parties to resolve the protested issues, including the validity of the protested water rights, through mediation. We continue to operate under the preliminary authorizations until the mediation and hearing processes are complete. We may face political and regulatory issues relating to the potential use of the maximum amount of our rights. However, we believe that our legal position with respect to the validity of our water rights is solid and that we will be able to meet our water commitments.

We also produce salt, magnesium chloride and brines as by-products of our potash and Trio^® operations. Our salt is used in a variety of markets. Magnesium chloride is typically used as a road-treatment agent. Our brines are used primarily by the oil and gas industry to support well development and completion activities.

• Oilfield services. We continue to look for opportunities to escalate the growth of our products and services designed to serve the oil and gas markets around our facilities. These products and services include water, heavy brine, high-speed potassium chloride mixing, salt water disposal, and trucking services. During the third quarter of 2018, we completed our second high-speed potassium chloride mixing job for an operation in the Powder River Basin. We have additional mixing jobs in the Powder River Basin planned for the fourth quarter of 2018 and into the first quarter of 2019.

• Growth strategy. We continue to consider and implement initiatives designed to maximize the value of our existing assets, such as through increased potash and Trio^® production and increased sales of water, magnesium chloride, salt, brine, and oilfield services. We are also exploring ways to potentially monetize the known but small lithium resource in our Wendover ponds. In addition, we may enter into new or complementary businesses that expand our product offerings beyond our existing assets, through the acquisition of companies or assets or otherwise.

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Results of Operations

(in thousands, except per ton amounts)	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Sales	$	36,528	$	34,029	$	140,736	$	127,691
Less:
Freight costs	6,196		6,160		24,862		22,867
Warehousing and handling costs	2,192		2,046		7,067		7,013
Cost of goods sold	19,180		19,555		84,580		85,249
Lower-of-cost-or-market inventory adjustments	—		667		781		4,808
Gross Margin	$	8,960	$	5,601	$	23,446	$	7,754

Net Income (Loss) $ 3,350 $ (1,908 ) $ 4,149 $ (21,520 )

Production volume:
Potash	60	56	230	237
Langbeinite	60	51	162	192
Sales volume:
Potash	74	77	269	281
Trio®	36	43	182	178

Average Net Realized Sales Price per Ton1
Potash	$	258	$	232	$	251	$	236
Trio®	$	200	$	187	$	194	$	197

¹Average net realized sales price per ton is a non-GAAP measure that we calculate as sales less freight costs then divided by sales tons. More information about this measure, including a reconciliation of this measure to the most directly comparable GAAP measure, is below under the heading "Non-GAAP Financial Measure."

Consolidated Results for the Three- and Nine-Months Periods Ended September 30, 2018, and 2017

Total sales in the three months ended September 30, 2018, increased 7% compared to the three months ended September 30, 2017, due to an increase of $1.8 million in water sales and an increase of $1.5 million in potashsales, partially offset by a 9% decrease in Trio^® sales. We entered into several water sales agreements in 2017, and purchase activity under those agreements has led to the increase in water sales. Increased potashsales were driven by an increase in the average net realized sales price per ton. Trio^® sales decreased as we sold fewer tons internationally because we have been more selective in selling Trio^® into international markets as we focus on a price-over-volume strategy.

Our total cost of goods sold decreased 2% for the three months ended September 30, 2018, as compared to the three months ended September 30, 2017, primarily due to an 8% decrease in sales volume, and an increase in by-product revenues, which are accounted for as a credit to cost of goods sold. Sales volume decreased primarily due to selling fewer tons of Trio^® internationally, as mentioned above. We generated a higher gross margin for the third quarter of 2018, compared to the third quarter of 2017, driven by the increase of $1.8 million in water sales and an increase of $1.5 million in sales of by-products.

For the nine months ended September 30, 2018, total sales increased $13.0 million or 10% compared to the same period in 2017, due to an increase in water sales of $9.1 million, an increase in Trio^® sales of $1.8 million and an increase in potash sales of $1.7 million. As mentioned above, water purchase activity in 2018 has been driven by increased purchase activity under the water sales agreements that we entered into in 2017. Increased Trio^® sales resulted from the increase in demand from domestic customers as we saw customers return to applying Trio^® on non-specialty crops due to its favorable pricing against the component nutrients, partially offset by the decreased sales volume internationally. For international markets, we focus on a price-over-volume strategy, which has caused us to be more selective in selling Trio^® into these markets. Potash sales increased due to the increase in the average net realized sales price per ton.

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Our total cost of goods sold for the nine months ended September 30, 2018, decreased slightly from the same period in 2017, mainly due to the decrease in sales volume and an increase in by-product sales, which are accounted for as a credit to cost of goods sold.

Selling and Administrative Expense

Selling and administrative expenses increased $0.5 million, or 11%, to $5.1 million for the three months ended September 30, 2018, as compared to the prior-year period. Selling and administrative expenses increased $1.6 million, or 12% for the first nine months of 2018, compared to the same period in 2017. The increase during the third quarter was due to the reestablishment of our employee cash bonus program for 2018. The year-to-date increase is due to the reestablishment of our employee cash bonus program for 2018, and our granting of annual equity awards to employees in March 2018, instead of June 2017, for the previous year.

Care and Maintenance Expenses

Mining operations at our West facility in Carlsbad, New Mexico, were temporarily idled in mid-2016. For the three months ended September 30, 2018, and 2017, we incurred care and maintenance expenses related to our West facility of $0.1 million, and $0.3 million, respectively. Expenses were higher in 2017 as we incurred initial costs to transition the plant to its current state of care and maintenance.

For the first nine months of 2018, we incurred care and maintenance expenses of $0.4 million compared to $1.4 million for the same period in 2017. As mentioned above, expenses were higher in 2017 as we incurred initial costs to transition our West facility to its current state of care and maintenance. We expect care and maintenance expenses going forward to approximate the 2018 level.

Other Operating Expenses

For the three months ended September 30, 2018, we generated other operating income of $0.9 million compared to other operating expense of $0.5 million for the three months ended September 30, 2017. In May 2018, one of our water customers claimed that its water-metering equipment was not working properly in March and April 2018, thereby resulting in the customer overreporting its water use. At that time, we estimated that it was probable that the customer overreported its water used, and estimated the range of overreported amounts to be between $0.6 million to $1.7 million. As a result, we recorded a $0.6 million contingent liability in the second quarter of 2018. During the third quarter of 2018, we determined the overreported amount was $1.5 million, which will be credited to future water deliveries.

During the third quarter of 2017, we recorded a $0.6 million reserve for obsolete stores inventory.

For the nine months ended September 30, 2018, we generated other operating income of $0.1 million compared to $2.8 million operating expense for the same period in 2017. In 2017, we incurred a loss of $1.7 million on the sale of an asset, recorded $0.6 million of operating expense to resolve land impact issues on or adjacent to our property in New Mexico and recorded a $0.6 million reserve for obsolete stores inventory.

Interest Expense

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For the three months ended September 30, 2018, interest expense decreased by $1.1 million compared to the same period in 2017, as our average debt balance decreased compared to the third quarter of 2017, and the applicable interest rate during the third quarter of 2018 was 400 basis points less than the applicable interest rate during the third quarter of 2017, due to our improved financial condition. Additionally, during the third quarter of 2017, we incurred make-whole payments of $0.5 million related to $6 million of principal repayments, and we wrote off deferred financing costs of $0.1 million associated with those principal repayments.

Interest expense for the first nine months of 2018, decreased to $2.6 million from $10.6 million during the same period in 2017, as our average debt balance outstanding decreased to $60 million in the first nine months of 2018, from $94.5 million during the first nine months of 2017, and our applicable interest rate during the first nine months of 2018 was 400 basis points lower than the same period in 2017, due to our improved financial condition. Finally, during the first nine months of 2017, we incurred make-whole payments of $3.0 million and wrote off $0.8 million of deferred financing fees related to principal prepayments of $75 million made during the first nine months of 2017.

Interest expense is recorded net of any capitalized interest associated with investments in capital projects. Amounts included in interest expense for the three and nine months ended September 30, 2018, and 2017, are as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Interest on Notes and credit facility	$	704		$	1,382		$	2,155		$	6,180
Make-whole payments	—			448			—			3,001
Amortization of deferred financing costs	183			246			550			1,596
Gross interest expense	887			2,076			2,705			10,777
Less capitalized interest	(23		)	(82		)	(85		)	(146		)
Interest expense, net	$	864		$	1,994		$	2,620		$	10,631

Potash Segment

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per ton amounts)	2018		2017		2018		2017
Sales	$	22,170	$	20,711	$	77,416	$	75,745
Less: Freight costs	3,060		2,864		9,795		9,401
Warehousing and handling costs	1,207		1,173		3,773		4,051
Cost of goods sold	10,814		11,534		45,511		50,776
Lower-of-cost-or-market inventory adjustments	—		113		—		146
Gross Margin	$	7,089	$	5,027	$	18,337	$	11,371
Depreciation, depletion, and accretion incurred1	$	6,288	$	6,567	$	19,556	$	20,685
Sales volumes (in tons)	74		77		269		281
Production volumes (in tons)	60		56		230		237

Average net realized sales price per ton² $ 258 $ 232 $ 251 $ 236

¹ Depreciation, depletion and accretion incurred excludes depreciation, depletion, and accretion amounts absorbed in or (relieved from) inventory.

² Average net realized per ton sales price per ton is a non-GAAP measure that we calculate as sales less freight costs then divided by sales tons. More information about this measure, including a reconciliation of this measure to the most directly comparable GAAP measure, is below under the heading "Non-GAAP Financial Measure."

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Three Months Ended September 30, 2018, and 2017

Our potash sales revenue increased 7% in the third quarter of 2018, compared to the same period in 2017, due to an 11% increase in our average net realized sales price per ton. This increase was partially offset by a 4% decrease in potash sales volume. This decrease was due to normal variability in the timing of sales to agricultural and feed customers.

Our potash cost of goods sold decreased 6% in the third quarter of 2018, compared to the same period in 2017, mainly due to a 4% decrease in sales volume and an increase in by-product sales, which are accounted for as a credit to cost of goods sold. Potash production increased 7% in the third quarter of 2018, compared to the same period in 2017, which, given the high percentage of fixed production costs, resulted in a lower per ton cost of potash produced.

Potash freight expense increased 7% in the third quarter of 2018, compared to the third quarter of 2017, even though we experienced a 4% decrease in potash sales volume. Freight rates have increased as carriers are operating near full capacity. Our freight expense is also impacted by the proportion of customers arranging for and paying their own freight costs, and the geographic distribution of our potash sales.

Nine Months Ended September 30, 2018, and 2017

Our potash sales volume in the first nine months of 2018 was 4% less than the same period in 2017 due to a decrease in sales in the agricultural markets. Our decreased sales volume was partially offset by a 6% increase in our average net realized sales price per ton. The increase in sales price was driven by overall increases in the prevailing market price for potash.

Our potash cost of goods sold decreased 10% due to a 4% decrease in sales volume, and an increase in by-product sales, which are accounted for as a credit to cost of goods sold.

Our freight costs increased 4% for the nine months ended September 30, 2018, compared to the same period in 2017, even though we experienced a 4% decrease in sales volume. Freight rates have increased in 2018, as freight carriers have been operating near full capacity. Our freight costs are impacted by the proportion of customers paying for their own freight, the geographic distribution of our products and the freight rates of our carriers.

Warehouse and handling costs decreased 7% in the first nine months of 2018 compared to 2017 due to reduced rental costs in 2018 compared to 2017.

Additional Information Relating to Potash

The table below shows our potash sales mix for the three and nine months ended September 30, 2018, and 2017:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Agricultural	69%	75%	79%	78%
Industrial	15%	12%	9%	10%
Feed	16%	13%	12%	12%

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Trio^® Segment

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except per ton amounts)	2018			2017			2018			2017
Sales	$	10,320		$	11,349		$	50,402		$	48,557
Less: Freight costs	3,136			3,296			15,067			13,466
Warehousing and handling costs	984			873			3,285			2,962
Cost of goods sold	6,378			7,861			35,756			34,205
Lower-of-cost-or-market inventory adjustments	—			554			781			4,662
Gross Margin (Deficit)	$	(178	)	$	(1,235	)	$	(4,487	)	$	(6,738	)
Depreciation, depletion, and accretion incurred1	$	1,668		$	1,687		$	5,038		$	5,091
Sales volumes (in tons)	36			43			182			178
Production volumes (in tons)	60			51			162			192

Average net realized sales price per ton² $ 200 $ 187 $ 194 $ 197

¹ Depreciation, depletion and accretion incurred excludes depreciation, depletion, and accretion amounts absorbed in or (relieved from) inventory.

² Average net realized per ton sales price per ton is a non-GAAP measure that we calculate as sales less freight costs then divided by sales tons. More information about this measure, including a reconciliation of this measure to the most directly comparable GAAP measure, is below under the heading "Non-GAAP Financial Measure."

Three Months Ended September 30, 2018, and 2017

Trio^® sales decreased 9% for the three months ended September 30, 2018, as compared to the same period in 2017, due to a 16% decrease in sales volume, partially offset by a 7% increase in the average net realized sales price per ton. During the third quarter of 2018, we sold fewer tons internationally as we continue to focus on a price-over-volume strategy, which primarily accounted for the decrease in Trio^® sales. Average net realized sales price per ton for the third quarter of 2018, increased 7% compared to the third quarter of 2017, as previously announced price increases began to take effect and freight expense decreased as we sold fewer tons internationally.

Cost of goods sold for Trio^® decreased 19% in the third quarter of 2018, compared to the third quarter of 2017, mainly due to a 16% decrease in sales volume and an increase in sales of by-products. Our Trio^® production volume increased by 18% in the third quarter of 2018, compared to the third quarter of 2017, primarily due to increased overall recovery rates.

Nine Months Ended September 30, 2018, and 2017

Trio^® sales increased by 4% for the nine months ended September 30, 2018, as compared to the same period in 2017, due to a slight increase in sales volume. The slight increase in sales volume was due to strong demand for domestic Trio^® as some customers return to applying Trio^® on non-specialty crops due to favorable pricing against the component nutrients. This increase was partially offset by a decrease in tons sold internationally as we focus on a price-over-volume strategy, which has caused us to be more selective in selling Trio^® into international markets. Average net realized sales price per ton for the nine months ended September 30, 2018, was relatively flat compared to the same period in 2017. Domestically, during the fourth quarter of 2018, we expect to benefit from price increases announced earlier this year.

Our freight costs increased by 12% during the nine months ended September 30, 2018, compared to the same period in 2017, due to a slight increase in sales volume, coupled with an increase in freight rates. As mentioned above, freight rates have been increasing as carriers are operating near full capacity.

Cost of goods sold for Trio^® increased during the nine months ended September 30, 2018, compared to the same period in 2017, due to a slight increase in tons sold and a decrease in tons produced. Because most of our production costs are fixed, a decrease in tons produced increases our production costs per ton. Our production volume decreased in the first nine months of 2018, compared to the same period in 2017, as a result of our decision to reduce Trio^® production in mid-2017 in an effort to match expected demand.

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Additional Information Relating to Trio^® 

The percentage of Trio^® tons sold into the export market decreased during the three and nine months ended September 30, 2018, compared to the same periods in 2017, as we have been more selective in selling Trio^® into international markets as we focus on a price-over-volume strategy.

	United States	Export
For the three months ended September 30, 2018	83%	17%
For the nine months ended September 30, 2018	81%	19%
For the three months ended September 30, 2017	71%	29%
For the nine months ended September 30, 2017	69%	31%

Specific Factors Affecting Our Results

Sales

Our gross sales are derived from the sales of potash, Trio^®, and water and are determined by the quantities of product we sell and the sales prices we realize. For potash and Trio^®, we quote prices to customers both on a delivered basis and on the basis of pick-up at our plants and warehouses. Freight costs are incurred on a portion of our sales as some of our customers arrange and pay for their own freight directly. When we arrange and pay for freight, our quotes and billings are based on expected freight costs to the points of delivery. Although our gross sales include the freight that we bill, we do not believe that gross sales provide a representative measure of our performance in the market due to variations caused by ongoing changes in the proportion of customers paying for their own freight, the geographic distribution of our products, and freight rates. Freight rates have been steadily increasing, thereby negatively influencing our average net realized sales price. Additionally, international freight costs per ton are significantly higher than domestic freight costs per ton. We manage our sales and marketing operations centrally, and we work to achieve the highest average net realized sales price we can by evaluating the product needs of our customers and associated logistics and then determining which of our production facilities can best satisfy these needs. Water sales are based on negotiated contractual per barrel rates multiplied by the number of barrels delivered to the customer.

The volume of product we sell is determined by demand for our products, our inventory storage capabilities, and our production capabilities. We generally intend to operate our facilities at production levels that approximate expected demand. By having adequate warehouse capacity, we can maintain production levels during periods of fluctuating product demand and have product inventory positioned closer to the fields in order to meet peak periods of fertilizer demand.

Cost of Goods Sold

Our cost of goods sold reflects costs to produce our potash and Trio^® products, less credits generated from the sale of our by-products, and costs incurred to provide water to customers. Many of our potash and Trio^® production costs are largely fixed, and, consequently, our cost of goods sold per ton on a facility-by-facility basis tends to move inversely with the number of tons we produce, within the context of normal production levels. Our solar solution production is impacted by weather variability. Our principal production costs include labor and employee benefits, maintenance materials, contract labor, materials for operating or maintenance projects, natural gas, electricity, operating supplies, chemicals, depreciation and depletion, royalties, and leasing costs. A smaller component of our cost base includes variable costs associated with contract labor, consumable operating supplies, reagents, and royalties. Our periodic production costs and costs of goods sold will not necessarily match one another from period to period based on the fluctuation of inventory, sales, production levels at our facilities, and sales of by-products.

Our production costs are also impacted when our production levels change, due to factors such as changes in the grade of ore mined, levels of Trio^® mine development, plant operating performance, downtime, and periodic maintenance turnarounds. We expect that our labor and contract labor costs in Carlsbad, New Mexico, will continue to be influenced most directly by the demand for labor in the local region where we compete for labor with the oil and gas, mining, and nuclear waste storage industries.

We pay royalties to federal, state, and private lessors under our mineral leases. These payments typically equal a percentage of sales, after subtracting freight costs, of minerals extracted and sold under the applicable lease. In some cases, federal royalties for potash are paid on a sliding scale that varies with the grade of ore extracted. For both the three and nine months ended September 30, 2018, our average royalty rate was 4.3%. For the three and nine months ended September 30, 2017, our average royalty rate was 4.6% and 4.5%, respectively.

Income Taxes

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We are subject to federal and state income taxes on our taxable income. Our effective tax rate for the three and nine months ended September 30, 2018 was 2% and 1%, respectively. Our effective tax rate for the three and nine months ended September 30, 2017, was 6% and 1%, respectively. Our effective tax rates differed from the statutory rate during each period primarily due to the valuation allowance established to offset our deferred tax assets.

Our federal and state income tax returns are subject to examination by federal and state tax authorities.

For both the three and nine months ended September 30, 2018, we incurred immaterial amounts of income tax expense, while for both the three and nine months ended September 30, 2017, we recognized an immaterial income tax benefit.

We evaluate our deferred tax assets and liabilities each reporting period using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax liability or asset is expected to be settled or realized. The estimated statutory income tax rates that are applied to our current and deferred income tax calculations are impacted most significantly by the states in which we conduct business. Changing business conditions for normal business transactions and operations, as well as changes to state tax rate and apportionment laws, potentially alter our apportionment of income among the states for income tax purposes. These changes in apportionment laws result in changes in the calculation of our current and deferred income taxes, including the valuation of our deferred tax assets and liabilities. The effects of any such changes are recorded in the period of the adjustment. These adjustments can increase or decrease the net deferred tax asset on our condensed consolidated balance sheet. However, any resulting impact to the deferred tax benefit or deferred tax expense would be offset by a corresponding adjustment to the valuation allowance and would have no income statement effect.

Capital Investments

During the first nine months of 2018, cash paid for property, plant and equipment was $12.7 million. We expect total capital investment for 2018 to be approximately $14 million to $18 million. We expect our capital investments for the remainder of 2018 will be for sustaining capital. We anticipate our remaining 2018 operating plans and capital programs will be funded out of operating cash flows and existing cash. We may also use our revolving credit facility, to the extent available, to fund capital investments.

Liquidity and Capital Resources

As of September 30, 2018, we had cash of $37.2 million, compared with cash of $1.1 million at December 31, 2017.

Our operations have primarily been funded from cash generated by operations. We continue to monitor our future sources and uses of cash and anticipate that we will adjust our capital allocation strategies when, and if, determined by our Board of Directors. We may, at any time we deem conditions favorable, attempt to improve our liquidity position by accessing debt or equity markets in accordance with our existing debt agreements. With the availability under our credit facility and expected future cash generated from operations, we believe that we have sufficient liquidity for the next twelve months.

The following summarizes our cash flow activity for the nine months ended September 30, 2018, and 2017 (in thousands):

	Nine Months Ended September 30,
	2018			2017
Cash flows provided by operating activities	$	52,945		$	10,533
Cash flows used in investing activities	$	(12,576	)	$	(672	)
Cash flows used in financing activities	$	(4,224	)	$	(16,156	)

Operating Activities

Total cash provided by operating activities through September 30, 2018, was $52.9 million, an increase of $42.4 million compared with the first nine months of 2017. The increase was driven by higher potash average net realized sales price per ton, increased water and by-product sales, increased deferred revenue relating to water, and decreased inventory during the first nine months of 2018.

Investing Activities

Total cash used in investing activities increased by $11.9 million in the first nine months of 2018, compared with the same period in 2017. Cash capital expenditures increased by $6.4 million during the first nine months of 2018, mainly due to construction of capital projects designed to increase capacity for water and by-product sales. During the first nine months of 2017, we sold an asset and received approximately $5.5 million in cash proceeds.

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Financing Activities

Total cash used in financing activities decreased by $11.9 million in the first nine months of 2018, compared with the same period in 2017. During the first nine months of 2017, we issued 50.6 million shares of common stock for net proceeds of $59.1 million. Proceeds were used in part of repay $75 million of indebtedness during the first nine months of 2017. In 2018, financing activities consisted of net repayments of short-term borrowings on our credit facility.

Senior Notes

As of September 30, 2018, we had outstanding an aggregate of $60 million of senior notes (the "Notes") consisting of the following series:

• $24 million of Senior Notes, Series A, due April 16, 2020 (the "Series A Notes");

• $18 million of Senior Notes, Series B, due April 14, 2023 (the "Series B Notes"); and

• $18 million of Senior Notes, Series C, due April 16, 2025 (the "Series C Notes").

We are required to prepay $10 million in principal of the Notes, plus accrued interest and a make-whole amount, on or before December 31, 2018.

The agreement governing the Notes contains certain financial covenants, including the following:

• For the quarter ended September 30, 2018, we were required to maintain a minimum fixed charge coverage amount of negative $10 million. Thereafter, we are required to maintain a minimum fixed charge coverage ratio that starts at 0.25 to 1.0 for the quarter ending December 31, 2018, and increases to 1.3 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with these financial covenants as our fixed charge coverage amount was $25.5 million and our fixed charge coverage ratio was 7.9 to 1.0.

• For the quarter ended September 30, 2018, we were allowed a maximum leverage ratio of 9.5 to 1.0. The maximum allowable leverage ratio decreases to 7.0 to 1.0 for the quarter ending December 31, 2018, and further decreases each quarter until it reaches 3.5 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with this financial covenant as our leverage ratio was 1.4 to 1.0.

Fixed charge coverage amount, fixed charge coverage ratio, and leverage ratio are calculated in accordance with the agreement governing the Notes.

For the nine months ended September 30, 2018, the interest rates on the Notes were 3.73% for the Series A Notes, 4.63% for the Series B Notes and 4.78% for the Series C Notes. These rates represent the lowest interest rates available under the Notes. The interest rates may adjust upward if we do not continue to meet certain financial covenants.

We have granted to the collateral agent for the noteholders a first lien on substantially all of our non-current assets and second lien on substantially all of our current assets. We are required to offer to prepay the Notes with the proceeds of dispositions of certain specified property and with the proceeds of certain equity issuances, as set forth in the agreement. The obligations under the Notes are unconditionally guaranteed by several of our subsidiaries.

We were in compliance with the applicable covenants under the agreement governing the Notes as of September 30, 2018.

Our outstanding long-term debt, net, as of September 30, 2018, and December 31, 2017, was as follows (in thousands):

	September 30, 2018			December 31, 2017
Senior Notes	$	60,000		$	60,000
Less current portion of long-term debt	(10,000		)	(10,000		)
Less deferred financing costs	(463		)	(563		)
Long-term debt, net	$	49,537		$	49,437

Credit Facility—We maintain an asset-based revolving credit facility with Bank of Montreal. In October 2018, we amended the credit facility to extend its maturity date from October 31, 2019, to October 31, 2023, to increase the amount available to be borrowed from $35 million to $50 million, and to make certain other changes. The credit facility now allows us to borrow up to $50 million subject to monthly limits based on our inventory and receivables. We can use up to $10 million of borrowings under the credit facility to make payments on the Notes.

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Borrowings on the credit facility after the amendment bear interest at 1.50% to 2.00% above LIBOR (London Interbank Offered Rate), based on average availability under the credit facility. We have granted to Bank of Montreal a first lien on substantially all of our current assets and a second lien on substantially all of our non-current assets. The obligations under the credit facility are unconditionally guaranteed by several of our subsidiaries.

We regularly borrow and repay amounts under the facility for near-term working capital needs and may do so in the future. For the three months ended September 30, 2018, we had no borrowings under the facility. During the nine months ended September 30, 2018, we borrowed $13.5 million and repaid $17.4 million under the facility. As of September 30, 2018, we had no borrowings outstanding and $3.8 million in outstanding letters of credit under the facility. Considering the outstanding letters of credit, we had $25.7 million available to be borrowed under the facility as of September 30, 2018. We were in compliance with the applicable covenants under the facility as of September 30, 2018.

At-the-Market Offering Program

In May 2017, we established an at-the-market offering program, which gives us the capacity to issue up to $40 million of our common stock. We did not issue any shares under our at-the-market program during the first nine months of 2018. At September 30, 2018, we have remaining capacity to issue and sell up to $37.8 million of additional shares of common stock under the program.

Off-Balance Sheet Arrangements

As of September 30, 2018, we had no material off-balance sheet arrangements aside from the operating leases and bonding obligations described in the accompanying notes to the condensed consolidated financial statements.

Critical Accounting Policies and Estimates

Our Annual Report on Form 10-K for the year ended December 31, 2017,describes the critical accounting policies that affect our more significant judgments and estimates used in the preparation of our consolidated financial statements. Except for the accounting policies for revenue recognition that were updated as a result of adopting ASC 606 on January 1, 2018, as discussed in Note 2 to the condensed consolidated financial statements, there have been no significant changes to our critical accounting policies since December 31, 2017.

Non-GAAP Financial Measure

To supplement our consolidated financial statements, which are prepared and presented in accordance with GAAP, we use average net realized sales price per ton, a non-GAAP financial measure to monitor, and evaluate our performance. This non-GAAP financial measure should not be considered in isolation or as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP. In addition, because the presentation of this non-GAAP financial measure varies among companies, our non-GAAP financial measure may not be comparable to similarly titled measures used by other companies.

We believe average net realized sales price per ton provides useful information to investors for analysis of our business. We use this non-GAAP financial measure as one of our tools in comparing period-over-period performance on a consistent basis and when planning, forecasting, and analyzing future periods. We believe this non-GAAP financial measure is used by professional research analysts and others in the valuation, comparison, and investment recommendations of companies in the potash mining industry. Many investors use the published research reports of these professional research analysts and others in making investment decisions.     

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Average Net Realized Sales Price per Ton

Average net realized sales price per ton is calculated as sales, less freight costs, divided by the number of tons sold in the period. We consider average net realized sales price per ton to be useful because it shows average per-ton pricing without the effect of certain transportation and delivery costs. When we arrange transportation and delivery for a customer, we include in revenue and in freight costs the costs associated with transportation and delivery. However, many of our customers arrange for and pay their own transportation and delivery costs, in which case these costs are not included in our revenue and freight costs. We use average net realized sales price per ton as a key performance indicator to analyze sales and price trends.

Below is a reconciliation of average net realized sales price per ton to the most directly comparable GAAP measure for the three and nine months ended September 30, 2018, and 2017:

	Three Months Ended September 30,
	2018						2017
(in thousands, except per ton amounts)	Potash		Trio®		Total		Potash		Trio®		Total
Sales	$	22,170	$	10,320	$	32,490	$	20,711	$	11,349	$	32,060
Freight costs	3,060		3,136		6,196		2,864		3,296		6,160
Subtotal	$	19,110	$	7,184	$	26,294	$	17,847	$	8,053	$	25,900
Divided by:
Tons sold	74		36				77		43
Average net realized sales price per ton	$	258	$	200			$	232	$	187

	Nine Months Ended September 30,
	2018						2017
(in thousands, except per ton amounts)	Potash		Trio®		Total		Potash		Trio®		Total
Sales	$	77,416	$	50,402	$	127,818	$	75,745	$	48,557	$	124,302
Freight costs	9,795		15,067		24,862		9,401		13,466		22,867
Subtotal	$	67,621	$	35,335	$	102,956	$	66,344	$	35,091	$	101,435
Divided by:
Tons sold	269		182				281		178
Average net realized sales price per ton	$	251	$	194			$	236	$	197

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Part II, Item 7A., "Quantitative and Qualitative Disclosure About Market Risk," of our Annual Report on Form 10-K for the year ended December 31, 2017, describes our exposure to market risk. There have been no significant changes to our market risk exposure since December 31, 2017.

ITEM 4.CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain "disclosure controls and procedures," as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act. Our disclosure controls and procedures are designed to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms. Our disclosure controls and procedures are also designed to ensure that this information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. Under the supervision and with the participation of our management, including our principal executive offer and principal financial officer, we conducted an evaluation of our disclosure controls and procedures as of September 30, 2018. Based on this evaluation, our principal executive officer and

29

principal financial officer have concluded that our disclosure controls and procedures were effective as of September 30, 2018, at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the three months ended September 30, 2018, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls

Our management, including our principal executive officer and principal financial officer, do not expect that our disclosure controls or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within Intrepid have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

30

PART II - OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

In February 2015, Mosaic Potash Carlsbad Inc. (“Mosaic”) filed a complaint and application for preliminary injunction and permanent injunction against Steve Gamble and us in the Fifth Judicial District Court for the County of Eddy in the State of New Mexico. Mr. Gamble is a former employee of Intrepid and Mosaic. In August 2015, the court denied Mosaic’s application for preliminary injunction. In July 2016, Mosaic filed a second complaint against Mr. Gamble and us in US District Court for the District of New Mexico. In January 2018, the two lawsuits were consolidated into one lawsuit pending in the US District Court for the District of New Mexico. Mosaic alleges against us violations of the New Mexico Uniform Trade Secrets Act, tortious interference with contract relating to Mr. Gamble’s separation of employment from Mosaic, violations of the Computer Fraud and Abuse Act, conversion, and civil conspiracy relating to the alleged misappropriation of Mosaic’s confidential information and related actions.  Mosaic seeks monetary relief of an unspecified amount, including damages for actual loss and unjust enrichment, exemplary damages, attorneys’ fees, and injunctive relief and has alleged that it has spent hundreds of millions of dollars to research and develop its alleged trade secrets.  The lawsuit is progressing through discovery.  We are vigorously defending against the lawsuit.

We are also subject to other claims and legal actions in the ordinary course of business. While there are uncertainties in predicting the outcome of any claim or legal action, we believe that the ultimate resolution of these other claims or actions is not reasonably likely to have a material adverse effect on our financial condition, results of operations, or cash flows.

ITEM 1A. RISK FACTORS

Our future performance is subject to a variety of risks and uncertainties that could materially and adversely affect our business, financial condition, results of operations, and the trading price of our common stock. These risks and uncertainties are described in Part I, Item 1A. "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2017. There have been no material changes to these risks and uncertainties described in our Annual Report on Form 10-K for the year ended December 31, 2017.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.MINE SAFETY DISCLOSURES

We are committed to providing a safe and healthy work environment. The objectives of our safety programs are to eliminate workplace accidents and incidents, preserve employee health, and comply with safety- and health-based regulations. We seek to achieve these objectives by training employees in safe work practices; establishing, following, and improving safety standards; involving employees in safety processes; openly communicating with employees about safety matters; and recording, reporting, and investigating accidents, incidents, and losses to avoid recurrence. As part of our ongoing safety programs, we collaborate with regulators to identify and implement new accident prevention techniques and practices.

Our East, West and North facilities in New Mexico are subject to regulation by the Mine Safety and Health Administration ("MSHA") under the Federal Mine Safety and Health Act of 1977 and the New Mexico Bureau of Mine Safety. MSHA inspects these facilities on a regular basis and issues citations and orders when it believes a violation has occurred under federal law. Exhibit 95.1 to this Quarterly Report on Form 10-Q provides the information concerning mine safety violations and other regulatory matters required by SEC rules. Our Utah and HB facilities are subject to regulation by the Occupational Health and Safety Administration and, therefore, are not required to be included in the information provided in Exhibit 95.1.

31

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

Exhibit No.	Description
31.1	Certification of Principal Executive Officer pursuant to Rule 13a-14(a) and 15d-14(a), as amended.*
31.2	Certification of Principal Financial Officer pursuant to Rule 13a-14(a) and 15d-14(a), as amended.*
32.1	Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**
32.2	Certification of Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**
10.1	Second Amendment to Credit Agreement, dated as of October 24, 2018, by and among Intrepid Potash, Inc., the subsidiaries named therein, Bank of Montreal, as administrative agent, and each of the lenders named therein (incorporated by reference to Intrepid Potash, Inc.'s Form 8-K (File No. 001-34025) filed on October 25, 2018).
95.1	Mine Safety Disclosure Exhibit.*
101.INS	XBRL Instance Document.*
101.SCH	XBRL Taxonomy Extension Schema.*
101.CAL	XBRL Extension Calculation Linkbase.*
101.LAB	XBRL Extension Label Linkbase.*
101.PRE	XBRL Extension Presentation Linkbase.*
101.DEF	XBRL Extension Definition Linkbase.*

* Filed herewith.

** Furnished herewith.

32

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	INTREPID POTASH, INC. (Registrant)
Dated: October 30, 2018	/s/ Robert P. Jornayvaz III
	Robert P. Jornayvaz III - Executive Chairman of the Board, President, and Chief Executive Officer (Principal Executive Officer and Duly Authorized Officer)
Dated: October 30, 2018	/s/ Joseph G. Montoya
	Joseph G. Montoya - Vice President and Chief Accounting Officer (Principal Financial Officer and Principal Accounting Officer)

33

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO 15 U.S.C. SECTION 7241, AS

ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert P. Jornayvaz III, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Intrepid Potash, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's Board of Directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: October 30, 2018	/s/ ROBERT P. JORNAYVAZ III
	Robert P. Jornayvaz III Executive Chairman of the Board, President, and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 15 U.S.C. SECTION 7241, AS

ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Joseph G. Montoya, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Intrepid Potash, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's Board of Directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: October 30, 2018	/s/ JOSEPH G. MONTOYA
	Joseph G. Montoya Vice President and Chief Accounting Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF

PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the filing of the Quarterly Report on Form 10-Q for the three months ended September 30, 2018 (the "Report"), of Intrepid Potash, Inc. (the "Registrant") with the Securities and Exchange Commission and pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Robert P. Jornayvaz III, Executive Chairman of the Board, President, and Chief Executive Officer of the Registrant, certify that to the best of my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"); and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Dated: October 30, 2018	/s/ ROBERT P. JORNAYVAZ III
	Robert P. Jornayvaz III Executive Chairman of the Board, President, and Chief Executive Officer

        This certification is furnished with this Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and will not, except to the extent required by such Act, be deemed filed by the Registrant for purposes of Section 18 of the Exchange Act. This certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the Registrant specifically incorporates it by reference.

EX-32.2

Exhibit 32.2

CERTIFICATION OF

PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the filing of the Quarterly Report on Form 10-Q for the three months ended September 30, 2018 (the "Report"), of Intrepid Potash, Inc. (the "Registrant") with the Securities and Exchange Commission and pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Joseph G. Montoya, Vice President and Chief Accounting Officer of the Registrant, certify that to the best of my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"); and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Dated: October 30, 2018	/s/ JOSEPH G. MONTOYA
	Joseph G. Montoya Vice President and Chief Accounting Officer

        This certification is furnished with this Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and will not, except to the extent required by such Act, be deemed filed by the Registrant for purposes of Section 18 of the Exchange Act. This certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the Registrant specifically incorporates it by reference.

EX-95.1

Exhibit 95.1

The table below provides information for the quarter ended September 30, 2018, about certain mine safety and health citations issued to Intrepid or its subsidiaries by the Mine Safety and Health Administration (“MSHA”) under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”) and about certain other regulatory matters.

Mine Name and MSHA Identification Number	Section 104 S&S Citations	Section 104(b) Orders	Section 104(d) Citations and Orders	Section 110(b)(2) Violations	Section 107(a) Orders	Total Dollar Value of MSHA Assessments Proposed	Total Number of Mining-Related Fatalities	Received Notice of Pattern of Violations Under Section 104(e)	Received Notice of Potential to Have Pattern under Section 104(e)	Legal Actions Pending as of the End of the Period	Legal Actions Initiated During the Period	Legal Actions Resolved During the Period
Intrepid Potash East (29-00170)	—	—	—	—	—	$3,453	—	—	—	2	2	—
Intrepid Potash West (29-00175)	—	—	—	—	—	$236	—	—	—	1	—	1
Intrepid Potash North (29-02028)	—	—	—	—	—	$4,491	—	—	—	—	—	—

Below are additional details about the information provided in the table above:

• General - In general, the number of citations and orders will vary depending on the size of the mine, the individual inspector assigned to the mine, and the specific mine characteristics. Citations and orders can be contested and appealed and, in that process, are often reduced in severity and amount and are sometimes vacated.

• MSHA Identification Numbers - MSHA assigns an identification number to each mine and may or may not assign separate identification numbers to related facilities. We provide the information in the table by MSHA identification number.

• Section 104 Significant and Substantial (“S&S”) Citations - These citations are issued for alleged violations of a mining safety standard or regulation where there exists a reasonable likelihood that the hazard contributed to or will result in an injury or illness of a reasonably serious nature.

• Section 104(b) Orders - These orders are issued for alleged failure to totally abate the subject matter of a Section 104(a) citation within the period specified in the citation.

• Section 104(d) Citations and Orders - These citations and orders are issued for an alleged unwarrantable failure (i.e., aggravated conduct constituting more than ordinary negligence) to comply with a mining safety standard or regulation.

• Section 110(b)(2) Violations - These violations are issued, and penalties are assessed, for flagrant violations (i.e., a reckless or repeated failure to make reasonable efforts to eliminate a known violation that substantially and proximately caused, or reasonably could have been expected to cause, death or serious bodily injury).

• Section 107(a) Orders - These orders are issued for an imminent danger to immediately remove miners.

• Total Dollar Value of MSHA Assessments Proposed - Proposed assessments issued during the period do not necessarily relate to the citations or orders issued by MSHA during that period or to the pending legal actions reported in the table.

• Notice of Pattern of Violations Under Section 104(e); Notice of Potential to Have Pattern under Section 104(e) - These notices are issued for a pattern of violation of mandatory health or safety standards or for the potential to have such a pattern.

• Legal Actions Pending, Initiated, and Resolved - The Federal Mine Safety and Health Review Commission (the “Commission”) is an independent adjudicative agency that provides administrative trial and appellate review of legal disputes arising under the Mine Act. Each legal action is assigned a docket number by the Commission and may have as its subject matter one or more citations, orders, penalties, or complaints.

The table below summarizes the types of legal actions that were pending as of September 30, 2018:

Mine Name and MSHA Identification Number	Contests of Citations and Orders	Contests of Proposed Penalties	Complaints for Compensation	Complaints of Discharge, Discrimination or Interference	Applications for Temporary Relief	Appeals of Judges’ Decisions or Orders	Total
Intrepid Potash East (29-00170)	2	—	—	—	—	—	2
Intrepid Potash West (29-00175)	1	—	—	—	—	—	1
Intrepid Potash North (29-02028)	—	—	—	—	—	—	—

• Contests of Citations and Orders relate to challenges by operators, miners or miners' representatives to the issuance of a citation or order issued by MSHA.

• Contests of Proposed Penalties (Petitions for Assessment of Penalties) are administrative proceedings challenging a civil penalty that MSHA has proposed for the violation contained in a citation or order.

• Complaints for Compensation are filed by miners entitled to compensation when a mine is closed by certain withdrawal orders issued by MSHA for the purpose of determining the amount of compensation, if any, due miners idled by the orders.

• Complaints of Discharge, Discrimination or Interference involve a miner's allegation that he or she has suffered a wrong by the operator because he or she engaged in some type of activity protected under the Mine Act, such as making a safety complaint, or that he or she has suffered discrimination and lost his or her position.

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 23, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Intrepid Potash, Inc.
Entity Central Index Key	0001421461
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		131,106,900
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 37,214	$ 1,068
Accounts receivable:
Trade, net	18,289	17,777
Other receivables, net	3,801	762
Refundable income taxes		2,663
Inventory, net	77,394	83,126
Prepaid expenses and other current assets	5,443	6,088
Total current assets	142,141	111,484
Property, plant and equipment, and mineral properties, net	350,211	364,542
Long-term parts inventory, net	29,915	30,611
Other assets, net	3,502	3,955
Total Assets	525,769	510,592
Accounts payable:
Trade	7,794	11,103
Related parties	28	28
Income taxes payable	210
Accrued liabilities	10,183	8,074
Accrued employee compensation and benefits	5,543	4,317
Advances on credit facility		3,900
Current portion of long-term debt	10,000	10,000
Other current liabilities	10,239	65
Total current liabilities	43,997	37,487
Long-term debt, net	49,537	49,437
Asset retirement obligation	22,727	21,476
Other non-current liabilities		102
Total Liabilities	116,261	108,502
Commitments and Contingencies
Common stock, $0.001 par value; 400,000,000 shares authorized; 128,232,942 and 127,646,530 shares outstanding at September 30, 2018, and December 31, 2017, respectively	128	128
Additional paid-in capital	649,082	645,813
Retained deficit	(239,702)	(243,851)
Total Stockholders' Equity	409,508	402,090
Total Liabilities and Stockholders' Equity	$ 525,769	$ 510,592

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares outstanding	128,232,942	127,646,530

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales	$ 36,528	$ 34,029	$ 140,736	$ 127,691
Less:
Lower-of-cost-or-market inventory adjustments	0	667	781	4,808
Gross Margin	8,960	5,601	23,446	7,754
Selling and administrative	5,121	4,623	15,281	13,683
Accretion of asset retirement obligation	417	390	1,251	1,168
Restructuring expense		0		266
Care and maintenance expense	119	293	366	1,404
Other operating (income) expense	(934)	467	(65)	2,758
Operating Income (Loss)	4,237	(172)	6,613	(11,525)
Other Income (Expense)
Interest Expense, net	(864)	(1,994)	(2,620)	(10,631)
Interest income			99	5
Other income	23	128	103	514
Income (Loss) Before Income Taxes	3,396	(2,038)	4,195	(21,637)
Income Tax (Expense) Benefit	(46)	130	(46)	117
Net Income (Loss)	$ 3,350	$ (1,908)	$ 4,149	$ (21,520)
Weighted Average Shares Outstanding:
Basic (in shares)	128,233	126,602	127,921	111,768
Diluted (in shares)	130,894	126,602	130,983	111,768
Earnings (Loss) Per Share:
Basic (in dollars per share)	$ 0.03	$ (0.02)	$ 0.03	$ (0.19)
Diluted (in dollars per share)	$ 0.03	$ (0.02)	$ 0.03	$ (0.19)
Mineral [Member]
Sales	$ 36,528	$ 34,029	$ 140,736	$ 127,691
Less:
Cost of Goods Sold	19,180	19,555	84,580	85,249
Cargo and Freight [Member]
Less:
Cost of Goods Sold	6,196	6,160	24,862	22,867
Warehouse and Handling [Member]
Less:
Cost of Goods Sold	$ 2,192	$ 2,046	$ 7,067	$ 7,013

XML

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Balance (in shares) at Dec. 31, 2017		127,646,530
Balance at Dec. 31, 2017	$ 402,090	$ 128	$ 645,813	$ (243,851)
Increase (Decrease) in Stockholders' Equity
Net Income	4,149			4,149
Stock-based compensation	3,593		3,593
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting (in shares)		556,158
Adjustments related to tax withholding for share-based compensation	(371)		(371)
Exercise of stock options (in shares)		30,254
Exercise of stock options	47		47
Balance (in shares) at Sep. 30, 2018		128,232,942
Balance at Sep. 30, 2018	$ 409,508	$ 128	$ 649,082	$ (239,702)

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Reconciliation of net income to net cash provided by operating activities:
Net Income (Loss)		$ 4,149	$ (21,520)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and accretion	[1]	25,089	25,890
Amortization of deferred financing costs		550	1,596
Stock-based compensation		3,593	2,678
Lower-of-cost-or-market inventory adjustments		781	4,808
(Gain) loss on disposal of assets		(84)	1,749
Allowance for doubtful accounts		100	420
Allowance for parts inventory obsolescence		15	(20)
Changes in operating assets and liabilities:
Trade accounts receivable, net		(612)	(7,944)
Other receivables, net		(3,039)	(360)
Refundable income taxes		2,663	1,379
Inventory, net		5,631	(2,086)
Prepaid expenses and other current assets		649	4,867
Accounts payable, accrued liabilities, and accrued employee compensation and benefits		3,076	(143)
Income Taxes Payable		210
Other liabilities		10,174	(781)
Net cash provided by operating activities		52,945	10,533
Cash Flows from Investing Activities:
Additions to property, plant, equipment, and mineral properties		(12,668)	(6,226)
Proceeds from sale of property, plant, equipment, and mineral properties		92	5,554
Net cash used in investing activities		(12,576)	(672)
Cash Flows from Financing Activities:
Issuance of common stock, net of transaction costs			59,130
Repayments of long-term debt			(75,000)
Proceeds from short-term borrowings on credit facility		13,500	9,000
Repayments of short-term borrowings on credit facility		(17,400)	(9,000)
Debt issuance costs			(128)
Employee tax withholding paid for restricted stock upon vesting		(371)	(158)
Proceeds from exercise of stock options		47
Net cash used in financing activities		(4,224)	(16,156)
Net Change in Cash, Cash Equivalents and Restricted Cash		36,145	(6,295)
Cash, Cash Equivalents, and Restricted Cash, beginning of period		1,549	8,470
Cash, Cash Equivalents, and Restricted Cash, end of period		37,694	2,175
Net cash paid (refunded) during the period for:
Interest		1,629	9,088
Income taxes		(2,828)	(1,496)
Accrued purchases for property, plant, equipment, and mineral properties		$ 915	$ 242

[1] Depreciation, depletion, and accretion incurred for potash and Trio® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

XML

COMPANY BACKGROUND

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

COMPANY BACKGROUND

COMPANY BACKGROUND

We are a diversified mineral company that delivers potassium, magnesium, sulfur, salt, and water products. We are the only producer of muriate of potash ("potassium chloride" or "potash") in the United States and are one of two producers of langbeinite ("sulfate of potash magnesia"), which we market and sell as Trio^®. We sell potash and Trio^® primarily into the agricultural market as a fertilizer. We also sell these products into the animal feed market as a nutritional supplement and sell potash into the industrial market as a component in drilling and fracturing fluids for oil and gas wells and other industrial inputs. We also sell water, primarily for industrial uses such as in the oil and gas industry. In addition, we sell by-products including salt, magnesium chloride, and brine, which are recorded as a credit to cost of goods sold. These by-product credits represented approximately 11% and 8% of total cost of goods sold for the nine months ended September 30, 2018, and 2017, respectively.

We produce potash from three solution mining facilities: our HB solar solution mine in Carlsbad, New Mexico, our solar solution mine in Moab, Utah, and our solar brine recovery mine in Wendover, Utah. We also operate the North compaction facility in Carlsbad, New Mexico, which compacts and granulates product from the HB mine. We produce Trio^® from our conventional underground East mine in Carlsbad, New Mexico.

"Intrepid," "our," "we," or "us," means Intrepid Potash, Inc. and its consolidated subsidiaries.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Financial Statement Presentation—Our unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, all adjustments, consisting of normal recurring accruals considered necessary for a fair presentation of interim financial information, have been included. These condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC on February 27, 2018.

Except for the accounting policies for revenue recognition that were updated as a result of adopting Accounting Standards Codification ("ASC") Topic 606 Revenue from Contracts with Customers ("ASC 606"), there have been no changes to our significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2017.

Revenue Recognition—The majority of our revenue is derived from contract sales that are of a short-term nature. We account for revenue in accordance with ASC 606, which we adopted on January 1, 2018, using the full retrospective method. Comparative information has been adjusted as if ASC 606 was in effect during the comparative period. See Note 16 "Recently Adopted Accounting Pronouncements" for further discussion of the adoptions, including the retrospective adjustment made to our 2017 financial information.

Performance Obligations: A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC 606. The contract's transaction price is allocated to the performance obligations and recognized as revenue when the performance obligations are satisfied. Generally, our performance obligations are satisfied when we ship product or deliver water from our facility to the customer. Shipping and handling charges are accounted for as a fulfillment cost and, as such, are not considered to be a separate performance obligation. Revenue from sales to customers at a single point in time accounted for all our revenue for each of the three and nine months ended September 30, 2018, and 2017.

Contract Estimates: In certain circumstances, we may sell product to customers where the sales price is variable. For such sales, we estimate the sales price we expect to realize based on the facts and circumstances for each sale, including historical experience, and recognize revenue to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal compared to the cumulative revenue recognized under the contract.

Contract Balances: The timing of revenue recognition, billings, and cash collection may result in contract assets or contract liabilities. For certain contracts, the customer has agreed to pay us before we have satisfied our performance obligations. Customer payments received before we have satisfied our performance obligations are accounted for as a contract liability. As of September 30, 2018, we had $9.8 million of contract liabilities, which are included in "Other current liabilities" on the condensed consolidated balance sheet. We had no contract liabilities as of December 31, 2017. Our contract liability activity for the three and nine months ended September 30, 2018, is shown below:

	Three Months Ended			Nine Months Ended
(amounts in thousands)	September 30, 2018			September 30, 2018
Beginning balance	$	7,278		$	—
Additions	6,156			13,915
Recognized as revenue during period	(3,597		)	(4,078		)
Ending balance	$	9,837		$	9,837

Disaggregation of Revenue: In the following table, revenue is disaggregated by our primary products.

	Three Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	22,170	$	20,711	Point in time
Trio	10,320		11,349		Point in time
Water and other	4,038		1,969		Point in time
Total	$	36,528	$	34,029
	Nine Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	77,416	$	75,745	Point in time
Trio	50,402		48,557		Point in time
Water and other	12,918		3,389		Point in time
Total	$	140,736	$	127,691

Reclassifications of Prior Period Presentation—Certain prior period amounts have been reclassified in order to conform to the current period presentation. These reclassifications had no effect on the reported results of operations.

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EARNINGS PER SHARE

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period. For purposes of determining diluted earnings per share, basic weighted-average common shares outstanding is adjusted to include potentially dilutive securities, including restricted stock, stock options, and performance units. The treasury-stock method is used to measure the dilutive impact of potentially dilutive shares. Potentially dilutive shares are excluded from the diluted weighted-average shares outstanding computation in periods in which they have an anti-dilutive effect. The following table shows the calculation of basic and diluted earnings (loss) per share (in thousands, except per share amounts):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018		2017			2018		2017
Net income (loss)	$	3,350	$	(1,908	)	$	4,149	$	(21,520	)
Basic weighted-average common shares outstanding	128,233		126,602			127,921		111,768
Add: Dilutive effect of restricted stock	1,741		—			2,098		—
Add: Dilutive effect of stock options	920		—			964		—
Diluted weighted-average common shares outstanding	130,894		126,602			130,983		111,768
Basic	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)
Diluted	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)

The following table shows the shares that have an anti-dilutive effect and are excluded from the diluted weighted-average shares outstanding computations (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Anti-dilutive effect of restricted stock	278	3,697	139	3,270
Anti-dilutive effect of stock options outstanding	1,748	2,326	1,354	2,032
Anti-dilutive effect of performance units	—	63	—	63

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH

9 Months Ended

Sep. 30, 2018

Cash and Cash Equivalents [Abstract]

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Total cash, cash equivalents and restricted cash, as shown on the condensed consolidated statements of cash flows are included in the following accounts at September 30, 2018, and 2017:

	September 30, 2018		September 30, 2017
Cash and cash equivalents	$	37,214	$	1,694
Restricted cash included in other long-term assets	480		481
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	37,694	$	2,175

Restricted cash included in other long-term assets on the balance sheet represents amounts whose use is restricted by contractual agreements with the Bureau of Land Management or the State of Utah as security to fund future reclamation obligations at our sites.

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INVENTORY AND LONG-TERM PARTS INVENTORY

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

INVENTORY AND LONG-TERM PARTS INVENTORY

INVENTORY AND LONG-TERM PARTS INVENTORY

The following summarizes our inventory, recorded at the lower of weighted-average cost or estimated net realizable value, as of September 30, 2018, and December 31, 2017 (in thousands):

	September 30, 2018		December 31, 2017
Finished goods product inventory	$	40,283	$	54,577
In-process mineral inventory	27,981		19,822
Total product inventory	68,264		74,399
Current parts inventory, net	9,130		8,727
Total current inventory, net	77,394		83,126
Long-term parts inventory, net	29,915		30,611
Total inventory, net	$	107,309	$	113,737

Parts inventories are shown net of any required allowances. At September 30, 2018, and December 31, 2017, allowances for parts inventory obsolescence were $2.6 million and $4.2 million, respectively.

As a result of routine assessments of the lower of weighted-average cost or estimated net realizable value of our finished goods product inventory, we recorded charges of $0.7 million for the three months ended September 30, 2017. For the three months ended September 30, 2018, we recorded no such charges. During the nine months ended September 30, 2018, and 2017, we recorded charges of $0.8 million and $4.8 million, respectively.

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PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES

PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES

Property, plant, equipment, and mineral properties were comprised of the following (in thousands):

	September 30, 2018			December 31, 2017
Buildings and plant	$	80,450		$	79,757
Machinery and equipment	239,158			234,861
Vehicles	5,322			4,835
Office equipment and improvements	13,875			12,637
Ponds and land improvements	58,492			56,194
Total depreciable assets	$	397,297		$	388,284
Accumulated depreciation	(160,931		)	(141,818		)
Total depreciable assets, net	$	236,366		$	246,466
Mineral properties and development costs	$	138,984		$	138,841
Accumulated depletion	(29,758		)	(26,840		)
Total depletable assets, net	$	109,226		$	112,001
Land	$	519		$	519
Construction in progress	$	4,100		$	5,556
Total property, plant, equipment, and mineral properties, net	$	350,211		$	364,542

We incurred the following expenses for depreciation, depletion, and accretion, including expenses capitalized into inventory, for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Depreciation	$	7,021	$	7,030	$	20,919	$	21,270
Depletion	742		850		2,919		3,452
Accretion	417		390		1,251		1,168
Total incurred	$	8,180	$	8,270	$	25,089	$	25,890

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DEBT

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

DEBT

DEBT

Senior Notes—As of September 30, 2018, we had outstanding an aggregate of $60 million of senior notes (the "Notes") consisting of the following series:

• $24 million of Senior Notes, Series A, due April 16, 2020 (the "Series A Notes");

• $18 million of Senior Notes, Series B, due April 14, 2023 (the "Series B Notes"); and

• $18 million of Senior Notes, Series C, due April 16, 2025 (the "Series C Notes").

We are required to prepay $10 million in principal of the Notes, plus accrued interest and a make-whole amount, on or before December 31, 2018.

The agreement governing the Notes contains certain financial covenants, including the following:

• For the quarter ended September 30, 2018, we were required to maintain a minimum fixed charge coverage amount of negative $10 million. Thereafter, we are required to maintain a minimum fixed charge coverage ratio that starts at 0.25 to 1.0 for the quarter ending December 31, 2018, and increases to 1.3 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with these financial covenants as our fixed charge coverage amount was $25.5 million and our fixed charge coverage ratio was 7.9 to 1.0.

• For the quarter ended September 30, 2018, we were allowed a maximum leverage ratio of 9.5 to 1.0. The maximum allowable leverage ratio decreases to 7.0 to 1.0 for the quarter ending December 31, 2018, and further decreases each quarter until it reaches 3.5 to 1.0 for each quarter ending on or after September 30, 2019. As of September 30, 2018, we were in compliance with this financial covenant as our leverage ratio was 1.4 to 1.0.

Fixed charge coverage amount, fixed charge coverage ratio, and leverage ratio are calculated in accordance with the agreement governing the Notes.

For the three and nine months ended September 30, 2018, the interest rates on the Notes were 3.73% for the Series A Notes, 4.63% for the Series B Notes and 4.78% for the Series C Notes. These rates represent the lowest interest rates available under the Notes. The interest rates may adjust upward if we do not continue to meet certain financial covenants.

We have granted to the collateral agent for the noteholders a first lien on substantially all of our non-current assets and a second lien on substantially all of our current assets. We are required to offer to prepay the Notes with the proceeds of dispositions of certain specified property and with the proceeds of certain equity issuances, as set forth in the agreement. The obligations under the Notes are unconditionally guaranteed by several of our subsidiaries.

We were in compliance with the applicable covenants under the agreement governing the Notes as of September 30, 2018.

Our outstanding long-term debt, net, as of September 30, 2018, and December 31, 2017, was as follows (in thousands):

	September 30, 2018			December 31, 2017
Senior Notes	$	60,000		$	60,000
Less current portion of long-term debt	(10,000		)	(10,000		)
Less deferred financing costs	(463		)	(563		)
Long-term debt, net	$	49,537		$	49,437

Credit Facility—We maintain an asset-based revolving credit facility with Bank of Montreal. In October 2018, we amended the credit facility to extend its maturity date from October 31, 2019, to October 31, 2023, to increase the amount available to be borrowed from $35 million to $50 million, and to make certain other changes. The credit facility now allows us to borrow up to $50 million subject to monthly limits based on our inventory and receivables. We can use up to $10 million of borrowings under the credit facility to make payments on the Notes.

Borrowings under the credit facility after the amendment bear interest at LIBOR (London Interbank Offered Rate) plus an applicable margin of 1.50% to 2.00% per annum, based on average availability under the credit facility. We have granted to Bank of Montreal a first lien on substantially all of our current assets and a second lien on substantially all of our non-current assets. The obligations under the credit facility are unconditionally guaranteed by several of our subsidiaries.

We regularly borrow and repay amounts under the facility for near-term working capital needs and may do so in the future. During the three months ended September 30, 2018, we had no borrowings under the facility. During the nine months ended September 30, 2018, we borrowed $13.5 million and repaid $17.4 million under the facility. As of September 30, 2018, we had no borrowings outstanding and $3.8 million in outstanding letters of credit under the facility. Including the outstanding letters of credit, we had $25.7 million available to be borrowed under the facility as of September 30, 2018. We were in compliance with the applicable covenants under the facility as of September 30, 2018.

Interest Expense—Interest expense is recorded net of any capitalized interest associated with investments in capital projects. We incurred gross interest expense of $0.9 million and $2.1 million for the three months ended September 30, 2018, and 2017, respectively. For the nine months ended September 30, 2018. and 2017, we incurred gross interest expense of $2.7 million and $10.8 million, respectively.

Amounts included in interest expense for the three and nine months ended September 30, 2018, and 2017, are as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Interest on Notes and credit facility	$	704		$	1,382		$	2,155		$	6,180
Make-whole payments	—			448			—			3,001
Amortization of deferred financing costs	183			246			550			1,596
Gross interest expense	887			2,076			2,705			10,777
Less capitalized interest	(23		)	(82		)	(85		)	(146		)
Interest expense, net	$	864		$	1,994		$	2,620		$	10,631

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FINANCIAL INFORMATION FOR SUBSIDIARY GUARANTORS OF POSSIBLE FUTURE PUBLIC DEBT

9 Months Ended

Sep. 30, 2018

Guarantees [Abstract]

FINANCIAL INFORMATION FOR SUBSIDIARY GUARANTORS OF POSSIBLE FUTURE PUBLIC DEBT

FINANCIAL INFORMATION FOR SUBSIDIARY GUARANTORS OF POSSIBLE FUTURE

PUBLIC DEBT

Intrepid Potash, Inc., as the parent company, has no independent assets or operations, and operations are conducted solely through its subsidiaries. Cash generated from operations is held at the parent-company level as cash on hand and totaled $37.2 million and $1.1 million at September 30, 2018, and December 31, 2017, respectively. If one or more of our wholly-owned operating subsidiaries guarantee public debt securities in the future, those guarantees will be full and unconditional and will constitute the joint and several obligations of the subsidiary guarantors. Our other subsidiaries are minor. There are no restrictions on our ability to obtain cash dividends or other distributions of funds from the subsidiary guarantors, except those imposed by applicable law.

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ASSET RETIREMENT OBLIGATION

9 Months Ended

Sep. 30, 2018

Asset Retirement Obligation Disclosure [Abstract]

ASSET RETIREMENT OBLIGATION

ASSET RETIREMENT OBLIGATION

We recognize an estimated liability for future costs associated with the abandonment and reclamation of our mining properties. A liability for the fair value of an asset retirement obligation and a corresponding increase to the carrying value of the related long-lived asset are recorded as the mining operations occur or the assets are acquired.

Our asset retirement obligation is based on the estimated cost to abandon and reclaim the mining operations, the economic life of the properties, and federal and state regulatory requirements. The liability is discounted using credit adjusted risk-free rate estimates at the time the liability is incurred or when there are upward revisions to estimated costs. The credit adjusted risk-free rates used to discount our abandonment liabilities range from 6.9% to 9.7%. Revisions to the liability occur due to construction of new or expanded facilities, changes in estimated abandonment costs or economic lives, or if federal or state regulators enact new requirements regarding the abandonment or reclamation of mines.

Following is a table of the changes to our asset retirement obligation for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Asset retirement obligation, at beginning of period	$	22,310	$	20,754	$	21,476	$	19,976
Accretion of discount	417		390		1,251		1,168
Total asset retirement obligation, at end of period	$	22,727	$	21,144	$	22,727	$	21,144

The undiscounted amount of asset retirement obligation was $59.5 million as of September 30, 2018.

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COMMON STOCK

9 Months Ended

Sep. 30, 2018

Stockholders' Equity Note [Abstract]

Common Stock

COMMON STOCK

In May 2017, we established an at-the-market offering program, which gives us the capacity to issue up to $40 million of our common stock. We sold no shares under the at-the-market offering program during the first nine months of 2018. We have remaining capacity to issue and sell up to $37.8 million of additional shares of common stock under the program.

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COMPENSATION PLANS

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

COMPENSATION PLANS

COMPENSATION PLANS

Equity Incentive Compensation Plan—Our Board of Directors and stockholders adopted a long-term incentive compensation plan called the Intrepid Potash, Inc. Amended and Restated Equity Incentive Plan (the "Plan"). We have issued common stock, restricted stock, performance units, and non-qualified stock option awards under the Plan. At September 30, 2018, there were approximately 2.3 million shares available for issuance under the Plan.

For the nine months ended September 30, 2018, we granted 0.5 million shares of restricted stock and 1.6 million non-qualified stock options to executive officers, other key employees and members of our Board of Directors. These awards vest one to three years from the date of the grant and, in some cases, contain performance-vesting or market conditions.

As of September 30, 2018, the following awards were outstanding under the Plan:

	Outstanding as of September 30, 2018
Restricted Stock	2,873,953
Non-qualified Stock Options	3,556,548

Total share-based compensation expense was $1.3 million and $1.0 million for the three months ended September 30, 2018, and 2017, respectively. For the nine months ended September 30, 2018, and 2017, total share-based compensation expense was $3.6 million and $2.7 million, respectively. As of September 30, 2018, we had $6.7 million of total remaining unrecognized compensation expense related to awards, that will be expensed through 2021.

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INCOME TAXES

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

Our anticipated annual tax rate is impacted primarily by the amount of taxable income associated with each jurisdiction in which our income is subject to income tax, permanent differences between the financial statement carrying amounts and tax bases of assets and liabilities.

During the three and nine months ended September 30, 2018, we incurred an immaterial amount of income tax expense, while during the three and nine months ended September 30, 2017, we recognized an immaterial amount of income tax benefit. Our effective tax rate for the three and nine months ended September 30, 2018 was 2% and 1%, respectively. Our effective tax rate for the three and nine months ended September 30, 2017, was 6% and 1%, respectively. Our effective tax rates differed from the statutory rate during each period primarily due to the valuation allowance established to offset our deferred tax assets.

As of September 30, 2018, we do not believe it is more likely than not that we will fully realize the benefit of our deferred tax assets. As such, we maintained a full valuation allowance against our net deferred tax assets as of September 30, 2018, and December 31, 2017.

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COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Reclamation Deposits and Surety Bonds—As of September 30, 2018, and December 31, 2017, we had $19.1 million of security placed principally with the State of Utah and the Bureau of Land Management for eventual reclamation of our various facilities. Of this total requirement, as of September 30, 2018, and December 31, 2017, $0.5 million consisted of long-term restricted cash deposits reflected in "Other assets, net" on the condensed consolidated balance sheets and $18.6 million was secured by surety bonds issued by an insurer. The surety bonds are held in place by an annual fee paid to the issuer.

We may be required to post additional security to fund future reclamation obligations as reclamation plans are updated or as governmental entities change requirements.

Legal—In February 2015, Mosaic Potash Carlsbad Inc. (“Mosaic”) filed a complaint and application for preliminary injunction and permanent injunction against Steve Gamble and us in the Fifth Judicial District Court for the County of Eddy in the State of New Mexico. Mr. Gamble is a former employee of Intrepid and Mosaic. In August 2015, the court denied Mosaic’s application for preliminary injunction. In July 2016, Mosaic filed a second complaint against Mr. Gamble and us in US District Court for the District of New Mexico. In January 2018, the two lawsuits were consolidated into one lawsuit pending in the US District Court for the District of New Mexico. Mosaic alleges against us violations of the New Mexico Uniform Trade Secrets Act, tortious interference with contract relating to Mr. Gamble’s separation of employment from Mosaic, violations of the Computer Fraud and Abuse Act, conversion, and civil conspiracy relating to the alleged misappropriation of Mosaic’s confidential information and related actions.  Mosaic seeks monetary relief of an unspecified amount, including damages for actual loss and unjust enrichment, exemplary damages, attorneys’ fees, and injunctive relief and has alleged that it has spent hundreds of millions of dollars to research and develop its alleged trade secrets.  The lawsuit is progressing through discovery.  We are vigorously defending against the lawsuit. Because this matter is at an early stage, we are unable to reasonably estimate the potential amount of loss, if any.

We are also subject to other claims and legal actions in the ordinary course of business. Legal costs are expensed as incurred. While there are uncertainties in predicting the outcome of any claim or legal action, we believe that the ultimate resolution of these other claims or actions is not reasonably likely to have a material adverse effect on our financial condition, results of operations, or cash flows.

Other—In May 2018, one of our water customers claimed that its water-metering equipment was not working properly in March and April 2018, thereby resulting in the customer overreporting its water use. At that time, we estimated that it was probable that the customer overreported its water used, and estimated the range of overreported amounts to be between $0.6 million to $1.7 million. As a result, we recorded a $0.6 million contingent liability in the second quarter of 2018. During the third quarter of 2018, we determined the overreported amount was $1.5 million, which will be credited to future water deliveries.

Future Operating Lease Commitments—We have operating leases for land, mining and other operating equipment, offices, and railcars, with original terms ranging up to 30 years.

Rental and lease expenses for the three months ended September 30, 2018, and 2017, were $1.0 million and $1.4 million, respectively. Rental and lease expenses for the nine months ended September 30, 2018, and 2017, were $2.9 million and $4.4 million, respectively.

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FAIR VALUE

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE

We measure our financial assets and liabilities in accordance with ASC Topic 820, Fair Value Measurements and Disclosures.

As of September 30, 2018, and December 31, 2017, our cash consisted of bank deposits. Other financial assets and liabilities including accounts receivable, refundable income taxes, accounts payable, accrued liabilities, and advances on our credit facility are carried at cost which approximates fair value because of the short-term nature of these instruments.

As of September 30, 2018, and December 31, 2017, the estimated fair value of our outstanding Notes was $57.2 million and $58.8 million, respectively. The fair value of our Notes is estimated using a discounted cash flow analysis based on current borrowing rates for debt with similar remaining maturities and ratings (a Level 2 input) and is designed to approximate the amount at which the instruments could be exchanged in an arm's-length transaction between knowledgeable willing parties.

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BUSINESS SEGMENTS

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

BUSINESS SEGMENTS

BUSINESS SEGMENTS

We have two business segments: potash and Trio^®. Our reportable segments are determined by management based on a number of factors, including the types of potassium-based fertilizer produced, production processes, markets served, and the financial information available to our chief operating decision maker. We evaluate performance based on the gross margins of the respective business segments and do not allocate corporate selling and administrative expenses, among others, to the respective segments. Total assets are not presented for each reportable segment as they are not reviewed by, nor otherwise regularly provided to, the chief operating decision maker. All sales are to external customers. Water sales and corporate expenses are included in "Other."

Information for each segment is provided in the following tables (in thousands):

Three Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	22,170	$	10,320		$	4,038	$	36,528
Less: Freight costs	3,060		3,136			—		6,196
Warehousing and handling costs	1,207		984			1		2,192
Cost of goods sold	10,814		6,378			1,988		19,180
Lower-of-cost-or-market inventory adjustments	—		—			—		—
Gross Margin (Deficit)	$	7,089	$	(178	)	$	2,049	$	8,960
Depreciation, depletion, and accretion incurred1	$	6,288	$	1,668		$	224	$	8,180
Three Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	20,711	$	11,349		$	1,969	$	34,029
Less: Freight costs	2,864		3,296			—		6,160
Warehousing and handling costs	1,173		873			—		2,046
Cost of goods sold	11,534		7,861			160		19,555
Lower-of-cost-or-market inventory adjustments	113		554			—		667
Gross Margin (Deficit)	$	5,027	$	(1,235	)	$	1,809	$	5,601
Depreciation, depletion, and accretion incurred1	$	6,567	$	1,687		$	16	$	8,270
Nine Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	77,416	$	50,402		$	12,918	$	140,736
Less: Freight costs	9,795		15,067			—		24,862
Warehousing and handling costs	3,773		3,285			9		7,067
Cost of goods sold	45,511		35,756			3,313		84,580
Lower-of-cost-or-market inventory adjustments	—		781			—		781
Gross Margin (Deficit)	$	18,337	$	(4,487	)	$	9,596	$	23,446
Depreciation, depletion, and accretion incurred1	$	19,556	$	5,038		$	495	$	25,089
Nine Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	75,745	$	48,557		$	3,389	$	127,691
Less: Freight costs	9,401		13,466			—		22,867
Warehousing and handling costs	4,051		2,962			—		7,013
Cost of goods sold	50,776		34,205			268		85,249
Lower-of-cost-or-market inventory adjustments	146		4,662			—		4,808
Gross Margin (Deficit)	$	11,371	$	(6,738	)	$	3,121	$	7,754
Depreciation, depletion, and accretion incurred1	$	20,685	$	5,091		$	114	$	25,890

¹Depreciation, depletion, and accretion incurred for potash and Trio^® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

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RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

9 Months Ended

Sep. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

Pronouncements Recently Adopted

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, as amended by ASU No. 2016-12, Revenue from Contracts with Customers(Topic 606), which requires revenue to be recognized based on the amount an entity is expected to be entitled to for promised goods or services provided to customers. The standard also requires expanded disclosures regarding contracts with customers. This standard became effective for us beginning January 1, 2018.

Our revenue predominantly continues to be recognized when products are shipped from our manufacturing facilities. Under the new revenue standard, for certain sales where revenue was previously deferred, such as sales in which the final price was not fixed and determinable, we now recognize revenue when the product is shipped using the sales price we expect to realize. In conjunction with our adoption of ASC 606 on January 1, 2018, primarily related to variable pricing contracts, we recorded a net increase to opening retained deficit of $0.5 million.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows(Topic 230) which is intended to clarify and align how certain cash receipts and cash payments are presented and classified in the statement of cash flows where there is currently diversity in practice. ASU No. 2016-15 specifically addresses eight classification issues within the statement of cash flows including debt prepayments or debt extinguishment costs; proceeds from the settlement of insurance claims; and separately identifiable cash flows and application of the predominance principle. This standard became effective for us beginning January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

    In October 2016, the FASB issued ASU No. 2016-16, Income Taxes(Topic 740) which became effective for us beginning January 1, 2018. This standard requires us to recognize at the transaction date the income tax consequences of intercompany asset transfers other than inventory. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash which became effective for us beginning January 1, 2018. This standard requires us to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows and will no longer require transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. As a result of including restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts presented on the condensed consolidated statement of cash flows, net cash flows for the nine months ended September 30, 2017, decreased by $3.5 million.

Pronouncements Issued But Not Yet Adopted

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires, among other things, lessees to recognize lease assets and liabilities on their balance sheets for those leases classified as operating leases under previous generally accepted accounting principles. These assets and liabilities must be recorded generally at the present value of the contracted lease payments, and the cost of the lease must be allocated over the lease term on a straight-line basis. This guidance is effective for us for annual and interim periods in fiscal years beginning after December 15, 2018. A modified retrospective transition method is required, applying the new standard to all leases existing at the date of initial application. We may choose to use either the effective date or the beginning of the earliest comparative period presented in the financial statements as the date of initial application. We currently expect to adopt the new standard on January 1, 2019, and use the effective date as our date of initial application. Consequently, financial information will not be updated, and disclosures required under the new standard will not be provided for dates before January 1, 2019.

The new standard provides a number of optional practical expedients in transition. We are continuing to evaluate the practical expedients provided.

We are continuing to work on ensuring we have identified all potential leases. We estimate additional assets and liabilities recorded after adoption of ASU No. 2016-02, Leases (Topic 842), will be less than $10 million.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes the way entities recognize impairment of many financial assets by requiring immediate recognition of estimated credit losses expected to occur over their remaining life. This guidance is effective for us for annual and interim periods in fiscal years beginning after December 15, 2018. Because we have historically experienced minimal bad debt expense related to our trade receivables, we do not believe the adoption of this new standard will have a material impact on our condensed consolidated financial statements.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Financial Statement Presentation

Our unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, all adjustments, consisting of normal recurring accruals considered necessary for a fair presentation of interim financial information, have been included. These condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC on February 27, 2018.

Except for the accounting policies for revenue recognition that were updated as a result of adopting Accounting Standards Codification ("ASC") Topic 606 Revenue from Contracts with Customers ("ASC 606"), there have been no changes to our significant accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2017.

Revenue Recognition

The majority of our revenue is derived from contract sales that are of a short-term nature. We account for revenue in accordance with ASC 606, which we adopted on January 1, 2018, using the full retrospective method. Comparative information has been adjusted as if ASC 606 was in effect during the comparative period. See Note 16 "Recently Adopted Accounting Pronouncements" for further discussion of the adoptions, including the retrospective adjustment made to our 2017 financial information.

Performance Obligation

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC 606. The contract's transaction price is allocated to the performance obligations and recognized as revenue when the performance obligations are satisfied. Generally, our performance obligations are satisfied when we ship product or deliver water from our facility to the customer. Shipping and handling charges are accounted for as a fulfillment cost and, as such, are not considered to be a separate performance obligation. Revenue from sales to customers at a single point in time accounted for all our revenue for each of the three and nine months ended September 30, 2018, and 2017.

Contract Estimates

In certain circumstances, we may sell product to customers where the sales price is variable. For such sales, we estimate the sales price we expect to realize based on the facts and circumstances for each sale, including historical experience, and recognize revenue to the extent it is probable that a subsequent change in estimate will not result in a significant revenue reversal compared to the cumulative revenue recognized under the contract.

Contract Balances

The timing of revenue recognition, billings, and cash collection may result in contract assets or contract liabilities. For certain contracts, the customer has agreed to pay us before we have satisfied our performance obligations. Customer payments received before we have satisfied our performance obligations are accounted for as a contract liability. As of September 30, 2018, we had $9.8 million of contract liabilities, which are included in "Other current liabilities" on the condensed consolidated balance sheet. We had no contract liabilities as of December 31, 2017. Our contract liability activity for the three and nine months ended September 30, 2018, is shown below:

	Three Months Ended			Nine Months Ended
(amounts in thousands)	September 30, 2018			September 30, 2018
Beginning balance	$	7,278		$	—
Additions	6,156			13,915
Recognized as revenue during period	(3,597		)	(4,078		)
Ending balance	$	9,837		$	9,837

Disaggregation of Revenue

In the following table, revenue is disaggregated by our primary products.

	Three Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	22,170	$	20,711	Point in time
Trio	10,320		11,349		Point in time
Water and other	4,038		1,969		Point in time
Total	$	36,528	$	34,029
	Nine Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	77,416	$	75,745	Point in time
Trio	50,402		48,557		Point in time
Water and other	12,918		3,389		Point in time
Total	$	140,736	$	127,691

Reclassifications of Prior Period Presentation

Certain prior period amounts have been reclassified in order to conform to the current period presentation. These reclassifications had no effect on the reported results of operations.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Contract Balances

Contract Balances: The timing of revenue recognition, billings, and cash collection may result in contract assets or contract liabilities. For certain contracts, the customer has agreed to pay us before we have satisfied our performance obligations. Customer payments received before we have satisfied our performance obligations are accounted for as a contract liability. As of September 30, 2018, we had $9.8 million of contract liabilities, which are included in "Other current liabilities" on the condensed consolidated balance sheet. We had no contract liabilities as of December 31, 2017. Our contract liability activity for the three and nine months ended September 30, 2018, is shown below:

	Three Months Ended			Nine Months Ended
(amounts in thousands)	September 30, 2018			September 30, 2018
Beginning balance	$	7,278		$	—
Additions	6,156			13,915
Recognized as revenue during period	(3,597		)	(4,078		)
Ending balance	$	9,837		$	9,837

Disaggregation of Revenue

Disaggregation of Revenue: In the following table, revenue is disaggregated by our primary products.

	Three Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	22,170	$	20,711	Point in time
Trio	10,320		11,349		Point in time
Water and other	4,038		1,969		Point in time
Total	$	36,528	$	34,029
	Nine Months Ended September 30,
	2018		2017
Product (amounts in thousands)	Revenue		Revenue		Timing of revenue recognition
Potash	$	77,416	$	75,745	Point in time
Trio	50,402		48,557		Point in time
Water and other	12,918		3,389		Point in time
Total	$	140,736	$	127,691

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EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Loss or Earnings Per Share

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period. For purposes of determining diluted earnings per share, basic weighted-average common shares outstanding is adjusted to include potentially dilutive securities, including restricted stock, stock options, and performance units. The treasury-stock method is used to measure the dilutive impact of potentially dilutive shares. Potentially dilutive shares are excluded from the diluted weighted-average shares outstanding computation in periods in which they have an anti-dilutive effect. The following table shows the calculation of basic and diluted earnings (loss) per share (in thousands, except per share amounts):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018		2017			2018		2017
Net income (loss)	$	3,350	$	(1,908	)	$	4,149	$	(21,520	)
Basic weighted-average common shares outstanding	128,233		126,602			127,921		111,768
Add: Dilutive effect of restricted stock	1,741		—			2,098		—
Add: Dilutive effect of stock options	920		—			964		—
Diluted weighted-average common shares outstanding	130,894		126,602			130,983		111,768
Basic	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)
Diluted	$	0.03	$	(0.02	)	$	0.03	$	(0.19	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table shows the shares that have an anti-dilutive effect and are excluded from the diluted weighted-average shares outstanding computations (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Anti-dilutive effect of restricted stock	278	3,697	139	3,270
Anti-dilutive effect of stock options outstanding	1,748	2,326	1,354	2,032
Anti-dilutive effect of performance units	—	63	—	63

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Tables)

9 Months Ended

Sep. 30, 2018

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents And Restricted Cash

Total cash, cash equivalents and restricted cash, as shown on the condensed consolidated statements of cash flows are included in the following accounts at September 30, 2018, and 2017:

	September 30, 2018		September 30, 2017
Cash and cash equivalents	$	37,214	$	1,694
Restricted cash included in other long-term assets	480		481
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	37,694	$	2,175

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INVENTORY AND LONG-TERM PARTS INVENTORY (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventory

The following summarizes our inventory, recorded at the lower of weighted-average cost or estimated net realizable value, as of September 30, 2018, and December 31, 2017 (in thousands):

	September 30, 2018		December 31, 2017
Finished goods product inventory	$	40,283	$	54,577
In-process mineral inventory	27,981		19,822
Total product inventory	68,264		74,399
Current parts inventory, net	9,130		8,727
Total current inventory, net	77,394		83,126
Long-term parts inventory, net	29,915		30,611
Total inventory, net	$	107,309	$	113,737

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PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES (Tables)

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, Equipment, and Mineral Properties

Property, plant, equipment, and mineral properties were comprised of the following (in thousands):

	September 30, 2018			December 31, 2017
Buildings and plant	$	80,450		$	79,757
Machinery and equipment	239,158			234,861
Vehicles	5,322			4,835
Office equipment and improvements	13,875			12,637
Ponds and land improvements	58,492			56,194
Total depreciable assets	$	397,297		$	388,284
Accumulated depreciation	(160,931		)	(141,818		)
Total depreciable assets, net	$	236,366		$	246,466
Mineral properties and development costs	$	138,984		$	138,841
Accumulated depletion	(29,758		)	(26,840		)
Total depletable assets, net	$	109,226		$	112,001
Land	$	519		$	519
Construction in progress	$	4,100		$	5,556
Total property, plant, equipment, and mineral properties, net	$	350,211		$	364,542

Schedule of Depreciation, Depletion and Accretion

We incurred the following expenses for depreciation, depletion, and accretion, including expenses capitalized into inventory, for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Depreciation	$	7,021	$	7,030	$	20,919	$	21,270
Depletion	742		850		2,919		3,452
Accretion	417		390		1,251		1,168
Total incurred	$	8,180	$	8,270	$	25,089	$	25,890

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DEBT (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of Long Term Debt

Our outstanding long-term debt, net, as of September 30, 2018, and December 31, 2017, was as follows (in thousands):

	September 30, 2018			December 31, 2017
Senior Notes	$	60,000		$	60,000
Less current portion of long-term debt	(10,000		)	(10,000		)
Less deferred financing costs	(463		)	(563		)
Long-term debt, net	$	49,537		$	49,437

Schedule Of Interest Expense

Amounts included in interest expense for the three and nine months ended September 30, 2018, and 2017, are as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Interest on Notes and credit facility	$	704		$	1,382		$	2,155		$	6,180
Make-whole payments	—			448			—			3,001
Amortization of deferred financing costs	183			246			550			1,596
Gross interest expense	887			2,076			2,705			10,777
Less capitalized interest	(23		)	(82		)	(85		)	(146		)
Interest expense, net	$	864		$	1,994		$	2,620		$	10,631

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ASSET RETIREMENT OBLIGATION (Tables)

9 Months Ended

Sep. 30, 2018

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes to Asset Retirement Obligation

Following is a table of the changes to our asset retirement obligation for the following periods (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Asset retirement obligation, at beginning of period	$	22,310	$	20,754	$	21,476	$	19,976
Accretion of discount	417		390		1,251		1,168
Total asset retirement obligation, at end of period	$	22,727	$	21,144	$	22,727	$	21,144

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COMPENSATION PLANS (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Outstanding Share Based Awards

As of September 30, 2018, the following awards were outstanding under the Plan:

	Outstanding as of September 30, 2018
Restricted Stock	2,873,953
Non-qualified Stock Options	3,556,548

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BUSINES SEGMENTS (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Information for each segment is provided in the following tables (in thousands):

Three Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	22,170	$	10,320		$	4,038	$	36,528
Less: Freight costs	3,060		3,136			—		6,196
Warehousing and handling costs	1,207		984			1		2,192
Cost of goods sold	10,814		6,378			1,988		19,180
Lower-of-cost-or-market inventory adjustments	—		—			—		—
Gross Margin (Deficit)	$	7,089	$	(178	)	$	2,049	$	8,960
Depreciation, depletion, and accretion incurred1	$	6,288	$	1,668		$	224	$	8,180
Three Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	20,711	$	11,349		$	1,969	$	34,029
Less: Freight costs	2,864		3,296			—		6,160
Warehousing and handling costs	1,173		873			—		2,046
Cost of goods sold	11,534		7,861			160		19,555
Lower-of-cost-or-market inventory adjustments	113		554			—		667
Gross Margin (Deficit)	$	5,027	$	(1,235	)	$	1,809	$	5,601
Depreciation, depletion, and accretion incurred1	$	6,567	$	1,687		$	16	$	8,270
Nine Months Ended September 30, 2018	Potash		Trio®			Other		Consolidated
Sales	$	77,416	$	50,402		$	12,918	$	140,736
Less: Freight costs	9,795		15,067			—		24,862
Warehousing and handling costs	3,773		3,285			9		7,067
Cost of goods sold	45,511		35,756			3,313		84,580
Lower-of-cost-or-market inventory adjustments	—		781			—		781
Gross Margin (Deficit)	$	18,337	$	(4,487	)	$	9,596	$	23,446
Depreciation, depletion, and accretion incurred1	$	19,556	$	5,038		$	495	$	25,089
Nine Months Ended September 30, 2017	Potash		Trio®			Other		Consolidated
Sales	$	75,745	$	48,557		$	3,389	$	127,691
Less: Freight costs	9,401		13,466			—		22,867
Warehousing and handling costs	4,051		2,962			—		7,013
Cost of goods sold	50,776		34,205			268		85,249
Lower-of-cost-or-market inventory adjustments	146		4,662			—		4,808
Gross Margin (Deficit)	$	11,371	$	(6,738	)	$	3,121	$	7,754
Depreciation, depletion, and accretion incurred1	$	20,685	$	5,091		$	114	$	25,890

¹Depreciation, depletion, and accretion incurred for potash and Trio^® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

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COMPANY BACKGROUND (Narrative) (Details) - Facility	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
By product credits	11.00%	8.00%
Number of mining facilities	3

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Sales	$ 36,528	$ 34,029	$ 140,736	$ 127,691
Mineral [Member]
Disaggregation of Revenue [Line Items]
Sales	36,528	34,029	140,736	127,691
Potash [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Sales	22,170	20,711	77,416	75,745
Trio [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Sales	10,320	11,349	50,402	48,557
Water And Other [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Sales	$ 4,038	$ 1,969	$ 12,918	$ 3,389

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES CONTRACT BALANCES (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Contract balance	$ 7,278,000	$ 0
Addtions	6,156,000	13,915,000
Recognized as revenue during period	(3,597,000)	(4,078,000)
Contract balance	$ 9,837,000	$ 9,837,000

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EARNINGS PER SHARE (Schedule of Calculation of Basic and Diluted Loss or Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Income (Loss)	$ 3,350	$ (1,908)	$ 4,149	$ (21,520)
Basic weighted average common shares outstanding (in shares)	128,233	126,602	127,921	111,768
Add: Dilutive effect of restricted stock (in shares)	1,741		2,098
Add: Dilutive effect of stock options (in shares)	920		964
Diluted weighted average common shares outstanding (in shares)	130,894	126,602	130,983	111,768
Income (Loss) per share:
Basic (in dollars per share)	$ 0.03	$ (0.02)	$ 0.03	$ (0.19)
Diluted (in dollars per share)	$ 0.03	$ (0.02)	$ 0.03	$ (0.19)

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EARNINGS PER SHARE (Schedule of Anti-Dilutive Shares) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restricted Stock [Member]
Anti-dilutive weighted average non-vested shares
Anti-dilutive shares (in shares)	278,000	3,697,000	139,000	3,270,000
Stock Options [Member]
Anti-dilutive weighted average non-vested shares
Anti-dilutive shares (in shares)	1,748,000	2,326,000	1,354,000	2,032,000
Performance Units [Member]
Anti-dilutive weighted average non-vested shares
Anti-dilutive shares (in shares)		63,025		63,000

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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 37,214	$ 1,068	$ 1,694
Restricted cash included in other long-term assets	480		481
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 37,694	$ 1,549	$ 2,175	$ 8,470

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INVENTORY AND LONG-TERM PARTS INVENTORY (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventory valuation reserves	$ 2,600		$ 2,600		$ 4,200
Lower-of-cost-or-market inventory adjustments	$ 0	$ 667	$ 781	$ 4,808

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INVENTORY AND LONG-TERM PARTS INVENTORY (Summary of Inventory) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory [Line Items]
Finished goods product inventory	$ 40,283	$ 54,577
In-process mineral inventory	27,981	19,822
Total product inventory	68,264	74,399
Current parts inventory	9,130	8,727
Total current inventory, net	77,394	83,126
Long-term parts inventory, net	29,915	30,611
Total inventory, net	$ 107,309	$ 113,737

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PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES (Schedule of Property, Plant, Equipment, and Mineral Properties) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Property, plant, equipment, and mineral properties
Depreciable assets	$ 397,297	$ 388,284
Accumulated depreciation	(160,931)	(141,818)
Depreciable assets, net	236,366	246,466
Mineral properties and development costs	138,984	138,841
Accumulated depletion	(29,758)	(26,840)
Total depletable assets, net	109,226	112,001
Land	519	519
Construction in progress	4,100	5,556
Total property, plant, equipment and mineral properties, net	350,211	364,542
Buildings Plant [Member]
Property, plant, equipment, and mineral properties
Depreciable assets	80,450	79,757
Machinery and Equipment [Member]
Property, plant, equipment, and mineral properties
Depreciable assets	239,158	234,861
Vehicles [Member]
Property, plant, equipment, and mineral properties
Depreciable assets	5,322	4,835
Office Equipment and Improvements [Member]
Property, plant, equipment, and mineral properties
Depreciable assets	13,875	12,637
Ponds and Land Improvements [Member]
Property, plant, equipment, and mineral properties
Depreciable assets	$ 58,492	$ 56,194

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PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES (Schedule of Depreciation, Depletion, and Accretion) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Depreciation		$ 7,021	$ 7,030	$ 20,919	$ 21,270
Depletion		742	850	2,919	3,452
Accretion		417	390	1,251	1,168
Total incurred	[1]	$ 8,180	$ 8,270	$ 25,089	$ 25,890

[1] Depreciation, depletion, and accretion incurred for potash and Trio® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

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DEBT (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Oct. 21, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt
Interest expense	$ 887,000	$ 2,076,000	$ 2,705,000	$ 10,777,000
Proceeds from credit facility			13,500,000	9,000,000
Repayments of credit facility			17,400,000	$ 9,000,000
Senior Notes [Member]
Debt
Additional required principal payment by December 31, 2018	10,000,000		10,000,000
Long-term debt	60,000,000		60,000,000			$ 60,000,000
Minimum fixed charge coverage amount for quarters ending September 30, 2018			10,000,000
Fixed charge coverage amount	25,500,000		$ 25,500,000
Fixed charge coverage ratio			7.9
Leverage Ratio			1.4
Bank Of Montreal [Member]
Debt
Credit facility, maximum borrowing capacity	35,000,000		$ 35,000,000
Credit facility, capacity available for notes repayment	10,000,000		10,000,000
Proceeds from credit facility	0		13,500,000
Repayments of credit facility			17,400,000
Line of credit, outstanding	0		0
Letters of credit outstanding, amount	3,800,000		3,800,000
Line of credit facility, current borrowing capacity	$ 25,700,000		$ 25,700,000
Maximum [Member] | Senior Notes [Member]
Debt
Minimum fixed charge ratio			1.3
Maximum leverage ratio	9.5
Maximum Leverage Ration For Q4 2018			7.0
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Bank Of Montreal [Member]
Debt
Credit facility interest			2.00%
Minimum [Member] | Senior Notes [Member]
Debt
Minimum fixed charge ratio			0.25
Maximum leverage ratio			3.5
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Bank Of Montreal [Member]
Debt
Credit facility interest			1.50%
Series A Senior Notes [Member] | Senior Notes [Member]
Debt
Long-term debt	$ 24,000,000		$ 24,000,000
Interest Rate	3.73%		3.73%
Series B Senior Notes [Member] | Senior Notes [Member]
Debt
Long-term debt	$ 18,000,000		$ 18,000,000
Interest Rate	4.63%		4.63%
Series C Senior Notes [Member] | Senior Notes [Member]
Debt
Long-term debt	$ 18,000,000		$ 18,000,000
Interest Rate	4.78%		4.78%
Subsequent Event [Member] | Bank Of Montreal [Member]
Debt
Credit facility, maximum borrowing capacity					$ 50,000,000

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DEBT SCHEDULE OF LONG TERM DEBT (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt
Less current portion of long-term debt	$ (10,000)	$ (10,000)
Senior Notes [Member]
Debt
Senior Notes	60,000	60,000
Less current portion of long-term debt	(10,000)	(10,000)
Less deferred financing costs	(463)	(563)
Long-term debt, net	$ 49,537	$ 49,437

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DEBT SCHEDULE OF INTEREST EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Debt Disclosure [Abstract]
Interest on notes and credit facility	$ 704	$ 1,382	$ 2,155	$ 6,180
Make-whole payments		448		3,001
Amortization of deferred financing costs	183	246	550	1,596
Gross interest expense	887	2,076	2,705	10,777
Less capitalized interest	(23)	(82)	(85)	(146)
Interest expense, net	$ 864	$ 1,994	$ 2,620	$ 10,631

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FINANCIAL INFORMATION FOR SUBSIDIARY GUARANTORS OF POSSIBLE FUTURE PUBLIC DEBT (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Guarantees [Abstract]
Cash	$ 37.2	$ 1.1

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ASSET RETIREMENT OBLIGATION (Narrative) (Details) $ in Millions	Sep. 30, 2018 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Asset Retirement Obligation, Undiscounted Amount	$ 59.5
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit Adjusted Risk-Free Rates to Discount Abandonment Liabilities	0.069
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Credit Adjusted Risk-Free Rates to Discount Abandonment Liabilities	0.097

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ASSET RETIREMENT OBLIGATION (Schedule of Changes to Asset Retirement Obligation) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligation, at beginning of period	$ 22,310	$ 20,754	$ 21,476	$ 19,976
Accretion of discount	417	390	1,251	1,168
Total asset retirement obligation, at end of period	$ 22,727	$ 21,144	$ 22,727	$ 21,144

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COMMON STOCK (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	May 31, 2017
At the market offering common stock offering capacity		$ 40.0
Shares issued under at the market offering program	0
Remaining capacity to issue and sell shares of common stock at the market offering	$ 37.8

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COMPENSATION PLANS (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Equity Incentive Compensation Plan [Abstract]
Shares available for issuance	2.3		2.3
Non Qualified Stock Options [Abstract]
Compensation expense	$ 1.3	$ 1.0	$ 3.6	$ 2.7
Unrecognized compensation expense	$ 6.7		$ 6.7
Minimum [Member]
Non Qualified Stock Options [Abstract]
Period over which grants vest (in years)			1 year
Maximum [Member]
Non Qualified Stock Options [Abstract]
Period over which grants vest (in years)			3 years
Restricted Stock [Member]
Restricted Stock [Abstract]
Shares granted			0.5
Stock Options [Member]
Non Qualified Stock Options [Abstract]
Shares granted			1.6

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COMPENSATION PLANS (Schedule of Outstanding Share Based Awards) (Details)	Sep. 30, 2018 shares
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding, restricted stock	2,873,953
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding, options	3,556,548

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INCOME TAXES (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Effective Tax Rate	2.00%	6.00%	1.00%	1.00%

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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Security placed with the State of Utah and BLM	$ 19.1			$ 19.1	$ 19.1		$ 18.8
Surety bonds issued by an insurer	18.6			18.6	18.6		18.3
Long-term restricted cash deposits	$ 0.5			$ 0.5	$ 0.5		$ 0.5
Future Operating Lease Commitments
Operating Lease, Contract Term, Maximum (in years)	30 years			30 years	30 years
Rental and lease expense	$ 1.0		$ 1.4		$ 3.0	$ 4.0
Water Volume Meter [Member]
Loss Contingencies [Line Items]
Contingent liability recorded in operating expense		$ 0.6		$ 1.5
Water Volume Meter [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Estimated contingency		1.7
Water Volume Meter [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Estimated contingency		$ 0.6

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FAIR VALUE (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Senior Notes, Fair Value	$ 57.2	$ 58.8

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BUSINESS SEGMENTS (Narrative) (Details)	9 Months Ended
	Sep. 30, 2018 segment
Segment Reporting [Abstract]
Number of reportable segments	2

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BUSINESS SEGMENT (Information by Segment) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Sales		$ 36,528	$ 34,029	$ 140,736	$ 127,691
Lower-of-cost-or-market inventory adjustments		0	667	781	4,808
Gross Margin (Deficit)		8,960	5,601	23,446	7,754
Depreciation, depletion and amortization expense	[1]	8,180	8,270	25,089	25,890
Operating Segments [Member] | Potash [Member]
Segment Reporting Information [Line Items]
Sales		22,170	20,711	77,416	75,745
Lower-of-cost-or-market inventory adjustments			113		146
Gross Margin (Deficit)		7,089	5,027	18,337	11,371
Depreciation, depletion and amortization expense	[1]	6,288	6,567	19,556	20,685
Operating Segments [Member] | Trio [Member]
Segment Reporting Information [Line Items]
Sales		10,320	11,349	50,402	48,557
Lower-of-cost-or-market inventory adjustments		0	554	781	4,662
Gross Margin (Deficit)		(178)	(1,235)	(4,487)	(6,738)
Depreciation, depletion and amortization expense	[1]	1,668	1,687	5,038	5,091
Corporate/Other [Member]
Segment Reporting Information [Line Items]
Sales		4,038	1,969	12,918	3,389
Gross Margin (Deficit)		2,049	1,809	9,596	3,121
Depreciation, depletion and amortization expense	[1]	224	16	495	114
Cargo and Freight [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		6,196	6,160	24,862	22,867
Cargo and Freight [Member] | Operating Segments [Member] | Potash [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		3,060	2,864	9,795	9,401
Cargo and Freight [Member] | Operating Segments [Member] | Trio [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		3,136	3,296	15,067	13,466
Warehouse and Handling [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		2,192	2,046	7,067	7,013
Warehouse and Handling [Member] | Operating Segments [Member] | Potash [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		1,207	1,173	3,773	4,051
Warehouse and Handling [Member] | Operating Segments [Member] | Trio [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		984	873	3,285	2,962
Warehouse and Handling [Member] | Corporate/Other [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		1	0	9	0
Mineral [Member]
Segment Reporting Information [Line Items]
Sales		36,528	34,029	140,736	127,691
Cost of Goods Sold		19,180	19,555	84,580	85,249
Mineral [Member] | Operating Segments [Member] | Potash [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		10,814	11,534	45,511	50,776
Mineral [Member] | Operating Segments [Member] | Trio [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		6,378	7,861	35,756	34,205
Mineral [Member] | Corporate/Other [Member]
Segment Reporting Information [Line Items]
Cost of Goods Sold		$ 1,988	$ 160	$ 3,313	$ 268

[1] Depreciation, depletion, and accretion incurred for potash and Trio® excludes depreciation, depletion and accretion amounts absorbed in or relieved from inventory.

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RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ 0.5
Accounting Standards Update 2016-18 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash flow	$ 3.5
Maximum [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated additional recorded assets and liabilities after adoption		$ 10.0