Bison Merger Sub I (FMSA) 10-Q 9 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 06, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	FMSA
Entity Registrant Name	Fairmount Santrol Holdings Inc.
Entity Central Index Key	1,010,858
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock Shares Outstanding		224,092,378

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenues	$ 280,050,000	$ 134,775,000	$ 685,859,000	$ 394,482,000
Cost of goods sold (excluding depreciation, depletion, and amortization shown separately)	180,582,000	114,873,000	475,470,000	347,466,000
Operating expenses
Selling, general and administrative expenses	31,105,000	17,242,000	79,438,000	60,560,000
Depreciation, depletion and amortization expense	20,174,000	17,759,000	59,462,000	54,401,000
Asset impairments			0	90,654,000
Restructuring charges				1,155,000
Other operating expense (income)	(1,594,000)	9,362,000	(2,299,000)	9,266,000
Income (loss) from operations	49,783,000	(24,461,000)	73,788,000	(169,020,000)
Interest expense, net	12,110,000	16,175,000	37,630,000	50,043,000
Other non-operating income				(5,000)
Income (loss) before provision (benefit) for income taxes	37,673,000	(40,636,000)	36,158,000	(219,058,000)
Provision (benefit) for income taxes	2,754,000	(20,013,000)	2,126,000	(98,786,000)
Net income (loss)	34,919,000	(20,623,000)	34,032,000	(120,272,000)
Less: Net income (loss) attributable to the non-controlling interest	(25,000)	2,000	193,000	15,000
Net income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 34,944,000	$ (20,625,000)	$ 33,839,000	$ (120,287,000)
Earnings (loss) per share
Basic	$ 0.16	$ (0.11)	$ 0.15	$ (0.71)
Diluted	$ 0.15	$ (0.11)	$ 0.15	$ (0.71)
Weighted average number of shares outstanding
Basic	224,082	183,620	223,947	168,904
Diluted	226,400	183,620	229,304	168,904

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 34,919	$ (20,623)	$ 34,032	$ (120,272)
Other comprehensive income (loss), before tax
Foreign currency translation adjustment	325	(2)	767	(362)
Pension obligations	61	66	183	174
Change in fair value of derivative agreements	1,704	893	3,877	(7,321)
Total other comprehensive income (loss), before tax	2,090	957	4,827	(7,509)
Provision (benefit) for income taxes related to items of other comprehensive income (loss)	650	(66)	2,575	(3,226)
Comprehensive income (loss), net of tax	36,359	(19,600)	36,284	(124,555)
Comprehensive income (loss) attributable to the non-controlling interest	(25)	2	193	15
Comprehensive income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 36,384	$ (19,602)	$ 36,091	$ (124,570)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 188,257	$ 194,069
Accounts receivable, net of allowance for doubtful accounts of $2,136 and $3,055 at September 30, 2017 and December 31, 2016, respectively	155,070	78,942
Inventories, net	68,304	52,650
Prepaid expenses and other assets	6,843	7,065
Refundable income taxes	823	21,077
Total current assets	419,297	353,803
Property, plant and equipment, net	767,408	727,735
Deferred income taxes	1,244	1,244
Goodwill	15,301	15,301
Intangibles, net	95,234	95,341
Other assets	7,740	9,486
Total assets	1,306,224	1,202,910
Current liabilities
Current portion of long-term debt	11,772	10,707
Accounts payable	69,173	37,263
Accrued expenses and deferred revenue	85,660	26,185
Total current liabilities	166,605	74,155
Long-term debt	782,735	832,306
Deferred income taxes	10,728	7,057
Other long-term liabilities	50,300	38,272
Total liabilities	1,010,368	951,790
Commitments and contingent liabilities (Note 13)
Equity
Preferred stock: $0.01 par value, 100,000 authorized shares Shares outstanding: 0 at September 30, 2017 and December 31, 2016
Common stock: $0.01 par value, 1,850,000 authorized shares Shares outstanding: 224,092 and 223,601 at September 30, 2017 and December 31, 2016, respectively	2,423	2,422
Additional paid-in capital	300,281	297,649
Retained earnings	298,258	264,852
Accumulated other comprehensive loss	(16,750)	(19,002)
Total equity attributable to Fairmount Santrol Holdings Inc. before treasury stock	584,212	545,921
Less: Treasury stock at cost Shares in treasury: 18,273 and 18,666 at September 30, 2017 and December 31, 2016, respectively	(288,662)	(294,874)
Total equity attributable to Fairmount Santrol Holdings Inc.	295,550	251,047
Non-controlling interest	306	73
Total equity	295,856	251,120
Total liabilities and equity	$ 1,306,224	$ 1,202,910

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,136	$ 3,055
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,850,000,000	1,850,000,000
Common stock, shares outstanding	224,092,000	223,601,000
Shares in treasury	18,273,000	18,666,000

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Subtotal [Member]	Non-controlling Interest [Member]
Beginning balances at Dec. 31, 2015	$ (60,368)	$ 2,391	$ 776,705	$ 405,044	$ (17,693)	$ (1,227,663)	$ (61,216)	$ 848
Beginning balances, shares at Dec. 31, 2015		161,433				77,765
Re-issuance of treasury stock	161,862		(292,675)			$ 454,537	161,862
Re-issuance of treasury stock, shares						(28,750)
Share-based awards exercised or distributed	3,950	$ 17	3,933				3,950
Share-based awards exercised or distributed, shares		30,514				(99)
Stock compensation expense	7,366		7,366				7,366
Tax effect of stock options exercised, forfeited, or expired	(1,051)		(1,051)				(1,051)
Transactions with non-controlling interest	(551)							(551)
Net income (loss)	(120,272)			(120,287)			(120,287)	15
Other comprehensive income (loss)	(4,283)				(4,283)		(4,283)
Ending balances at Sep. 30, 2016	(13,347)	$ 2,408	494,278	284,757	(21,976)	$ (773,126)	(13,659)	312
Ending balances, shares at Sep. 30, 2016		191,947				48,916
Beginning balances at Dec. 31, 2016	251,120	$ 2,422	297,649	264,852	(19,002)	$ (294,874)	251,047	73
Beginning balances, shares at Dec. 31, 2016		223,601				18,666
Re-issuance of treasury stock	6,212					$ 6,212	6,212
Re-issuance of treasury stock, shares		393				(393)
Share-based awards exercised or distributed	(5,648)	$ 1	(5,649)				(5,648)
Share-based awards exercised or distributed, shares		98
Stock compensation expense	8,281		8,281				8,281
Impact of adoption of ASU 2016-09, net of tax | ASU 2016-09 [Member]	(433)			(433)			(433)
Transactions with non-controlling interest	40							40
Net income (loss)	34,032			33,839			33,839	193
Other comprehensive income (loss)	2,252				2,252		2,252
Ending balances at Sep. 30, 2017	$ 295,856	$ 2,423	$ 300,281	$ 298,258	$ (16,750)	$ (288,662)	$ 295,550	$ 306
Ending balances, shares at Sep. 30, 2017		224,092				18,273

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement Of Cash Flows [Abstract]
Net income (loss)	$ 34,032	$ (120,272)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and depletion	53,638	50,891
Amortization	9,508	8,471
Reserve for doubtful accounts	(421)	2,645
Write-off of deferred financing costs	389
Asset impairments		90,654
Inventory write-downs and reserves	1,266	10,302
(Gain) loss on disposal of fixed assets	(404)	315
Deferred income taxes and taxes payable	3,965	(80,248)
Stock compensation expense	7,582	7,366
Change in operating assets and liabilities:
Accounts receivable	(75,707)	(5,035)
Inventories	(16,920)	7,039
Prepaid expenses and other assets	(2,745)	1,873
Refundable income taxes	20,255	5,922
Accounts payable	20,659	4,723
Accrued expenses and deferred revenue	52,373	3,875
Net cash provided by (used in) operating activities	107,470	(11,479)
Cash flows from investing activities
Proceeds from sale of fixed assets	3,124	5,630
Capital expenditures and stripping costs	(36,470)	(28,712)
Leasehold interest payments for sand reserves	(20,000)
Earnout payments	(250)	(1,631)
Net cash used in investing activities	(53,596)	(24,713)
Cash flows from financing activities
Payments on long-term debt	(6,469)	(8,670)
Prepayments on term loans	(50,000)	(69,580)
Payments on capital leases and other long-term debt	(3,491)	(5,067)
Proceeds from option exercises	563	3,950
Proceeds from primary stock offering		161,862
Tax payments for withholdings on share-based awards exercised or distributed	(1,097)	(3,650)
Tax effect of stock options exercised, forfeited, or expired		(1,051)
Transactions with non-controlling interest	40	(551)
Net cash provided by (used in) financing activities	(60,454)	77,243
Change in cash and cash equivalents related to assets classified as held-for-sale		1,376
Foreign currency adjustment	768	(479)
Increase (decrease) in cash and cash equivalents	(5,812)	41,948
Cash and cash equivalents:
Beginning of period	194,069	171,486
End of period	$ 188,257	$ 213,434

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	1. Significant Accounting Policies Basis of Presentation The unaudited condensed consolidated financial statements of Fairmount Santrol Holdings Inc. and its consolidated subsidiaries (collectively, the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments (which are of a normal, recurring nature) and disclosures necessary for a fair statement of the financial position, results of operations, comprehensive income, and cash flows of the reported interim periods. The condensed consolidated balance sheet as of December 31, 2016 was derived from audited financial statements, but does not include all disclosures required by GAAP. Interim results are not necessarily indicative of the results to be expected for the full year or any other interim period. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements as filed in the 2016 Annual Report on Form 10-K and notes thereto and information included elsewhere in this Quarterly Report on Form 10-Q. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02 – Leases Leases In April and May 2016, the FASB issued ASU No. 2016-10 – Revenue from Contracts with Customers – Identifying Performance Obligations and Licensing Revenue Recognition and Derivatives and Hedging – Recession of SEC Guidance Revenue from Contracts with Customers – Narrow-Scope Improvements and Practical Expedients Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers – Revenue from Contracts with Customers In January 2017, the FASB issued ASU No. 2017-04 – Intangibles – Goodwill and Other (Topic 350) – Simplifying the Test for Goodwill Impairment. In March 2017, the FASB issued ASU No. 2017-07 – Compensation – Retirement Benefits (Topic 715) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In August 2017, the FASB issued ASU No. 2017-12 – Derivatives and Hedging (Topic 815) – Targeted Improvements to Accounting for Hedging Activities

Inventories, net

Inventories, net	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories, net	2. Inventories, net At September 30, 2017 and December 31, 2016, inventories consisted of the following: September 30, 2017 December 31, 2016 Raw materials $ 8,385 $ 7,465 Work-in-process 15,371 12,681 Finished goods 45,802 33,760 69,558 53,906 Less: LIFO reserve (1,254 ) (1,256 ) Inventories, net $ 68,304 $ 52,650

Property, Plant, and Equipment,

Property, Plant, and Equipment, net	9 Months Ended
	Sep. 30, 2017
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment, net	3. Property, Plant, and Equipment, net At September 30, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: September 30, 2017 December 31, 2016 Land and improvements $ 81,865 $ 86,298 Mineral reserves and mine development 306,074 253,766 Machinery and equipment 589,591 596,962 Buildings and improvements 187,584 161,057 Furniture, fixtures, and other 3,486 3,440 Construction in progress 31,406 6,748 1,200,006 1,108,271 Accumulated depletion and depreciation (432,598 ) (380,536 ) Property, plant, and equipment, net $ 767,408 $ 727,735 Under ASC 360 Property, Plant, and Equipment On July 18, 2017, the Company entered into a 40-year lease agreement for approximately 3,250 acres of sand reserves in Winkler County, Texas. The Company has capitalized the entire $40,000 leasehold interest obligation and related exploratory and transaction costs to mineral reserves and mine development. The initial payment of $20,000 was paid at lease commencement. The remaining $20,000 is payable in two installments of $10,000 each upon the occurrence of certain probable events. The first remaining installment was payable upon the issuance of all federal, state, and local permits, and the final remaining installment is payable upon the earlier of two years from the commencement date of the agreement or the date the Company makes its first sale from this property. Additionally, the Company is obligated for certain royalty payments based on volumes sold. In October 2017, the Company paid an installment of $10,000. The remaining $10,000 is payable when sand begins to be sold from the property, which the Company expects within twelve months of the date of this Report. The capitalized leasehold interest payments will begin to be recognized as expense as production occurs.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	4. Long-Term Debt At September 30, 2017 and December 31, 2016, long-term debt consisted of the following: September 30, 2017 December 31, 2016 Term B-2 Loans 671,596 719,632 Extended Term B-1 Loans 109,760 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 8,511 3,634 Deferred financing costs, net (5,432 ) (7,975 ) 794,507 843,013 Less: current portion (11,772 ) (10,707 ) Long-term debt including leases $ 782,735 $ 832,306 On April 28, 2016, the Company entered into an amendment to the 2013 Amended Credit Agreement that extended the maturity of certain of the Term B-1 Loans to July 15, 2018 (the “2016 Extended Term Loans”). The Company made a prepayment of principal of $69,580 and accrued interest of $227 on April 28, 2016 to the lenders consenting to the amendment. On October 17, 2016, the Company repurchased $3,000 of the Extended Term B-1 Loans at 91.5% of par. On November 17, 2016, the Company fully prepaid the $16,766 of the Term B-1 Loans due March 2017 as well as the $69,580 of the 2016 Extended Term Loans. On November 29, 2016, the Company repurchased, at an average of 96.3% of par, a total of $213,000 of term loans, which consisted of $37,867 of the Extended Term B-1 Loans and $175,133 of the Term B-2 Loans. The related net gain on the October and November 2016 debt repurchases was $5,110. On June 27, 2017, the Company prepaid $50,000 of term loans at par, which consisted of $42,979 of the Term B-2 Loans and $7,021 of the Extended Term B-1 Loans and recognized expenses of $389 relating to the write-off of unamortized capitalized debt issuance costs. As of September 30, 2017, the Term B-2 Loans, Extended Term B-1 Loans, and the Revolving Credit Facility had actual interest rates of 4.7%, 4.7%, and 5.2%, respectively. The Revolving Credit Facility termination date is September 6, 2018. As of September 30, 2017, the Company’s leverage ratio was 5.20:1.00 which, under the terms of the Revolving Credit Facility, permitted $84,742 available unused capacity on the Revolving Credit Facility and $15,258 committed to outstanding letters of credit. As of September 30, 2017, the Company had not drawn on the Revolving Credit Facility. The Company has a $10,000 Industrial Revenue Bond outstanding related to the construction of a mining facility in Wisconsin. The bond bears interest, which is payable monthly, at a variable rate. The rate was 0.95% at September 30, 2017. The bond matures on September 1, 2027 and is collateralized by a letter of credit of $10,000. On November 1, 2017 (the “Closing Date”), the Company entered into a new five-year asset-based revolving credit facility (the “ABL Revolver”) with PNC Capital Markets LLC, as administrative agent, which replaced the existing revolving credit facility. The ABL Revolver has a borrowing capacity of up to $125,000 with an option to increase by $50,000 to $175,000. An initial draw upon closing of the ABL Revolver was used to partially refinance existing term debt, pay expenses associated with debt refinancing, and can be later used for funding capital expenditures, and providing ongoing working capital. The ABL Revolver is interest only at a rate derived from LIBOR plus 1.5% to 2.0%, depending on excess availability under the ABL Revolver, or from a Base Rate, which is the higher of the prime rate, the Federal Funds open rate plus 0.5% and the Daily LIBOR Rate plus 1.0%. The interest payments on the ABL Revolver are payable in quarterly installments, with the principal balance due at November 1, 2022. If the Term Loan B (subsequently defined) is still outstanding, then any balance outstanding under the ABL Revolver is due on May 1, 2022. Availability under the ABL Revolver is based upon an available borrowing base, which includes a specified percentage of eligible accounts receivable and inventory and excludes outstanding letters of credit and applicable reserves. In addition to interest charged on the ABL Revolver, the Company is also obligated to pay certain fees, quarterly in arrears, including letter of credit fees and unused facility fees. The ABL Revolver includes financial covenants requiring a minimum fixed charge coverage ratio of 1.1, based on availability thresholds, and is primarily secured by all accounts receivable and inventory, with security interest second to the Term Loan B (subsequently defined) on substantially all other assets of the Company. Additionally on the Closing Date, the Company entered into an agreement with Barclays Capital Inc., as administrative agent, for a $700,000 Senior Secured Term Loan (the “Term Loan B”) to refinance all of its existing Term B-2 Loans and Extended Term B-1 Loans. The Term Loan B was issued with original issue discount at 98.5% of face. The Term Loan B, which has a maturity date of November 1, 2022, requires quarterly interest payments and 2.5% annual principal amortization payments for the first half of the loan period, 5.0% for the second half of the loan period, with the balance payable at the maturity date. Interest accrues at the rate of the three-month LIBOR plus 6.0% with a LIBOR floor of 1.0%. The Term Loan B is secured by a first priority security interest in substantially all assets of the Company and its subsidiaries, except for accounts receivable and inventory, in which it has a second priority security interest. The Company has the option to prepay the Term Loan B. Should the Company choose to refinance the Term Loan B, it would be subject to a 1.02% premium if refinanced at a lower interest rate within one year of the Closing Date or a 1.01% premium if refinanced at a lower interest rate within two years of the Closing Date. There are no financial covenants governing the Term Loan B. The Company anticipates recording a loss on extinguishment of debt in the fourth quarter of 2017, but is unable to make a meaningful estimate of the impact on the Company’s financial statements at the date of filing.

Accrued Expenses and Deferred R

Accrued Expenses and Deferred Revenue	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accrued Expenses and Deferred Revenue	5. Accrued Expenses and Deferred Revenue At September 30, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: September 30, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 11,068 $ 7,018 Accrued bonus 29,280 3,536 Contingent consideration 5,244 2,507 Accrued income taxes 426 421 Accrued real estate taxes 4,401 4,821 Accrued leasehold interest payments 20,000 - Deferred revenue 5,002 75 Other accrued expenses 10,239 7,807 Accrued expenses and deferred revenue $ 85,660 $ 26,185

Earnings (Loss) per Share

Earnings (Loss) per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings (Loss) per Share	6. Earnings (Loss) per Share The table below shows the computation of basic and diluted earnings (loss) per share for the three and nine months ended September 30, 2017 and 2016, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Numerator: Net income (loss) attributable to Fairmount Santrol Holdings Inc. $ 34,944 $ (20,625 ) $ 33,839 $ (120,287 ) Denominator: Basic weighted average shares outstanding 224,082 183,620 223,947 168,904 Dilutive effect of employee stock options, RSUs, and PRSUs 2,318 - 5,357 - Diluted weighted average shares outstanding 226,400 183,620 229,304 168,904 Earnings (loss) per common share – basic $ 0.16 $ (0.11 ) $ 0.15 $ (0.71 ) Earnings (loss) per common share – diluted $ 0.15 $ (0.11 ) $ 0.15 $ (0.71 ) The calculation of diluted weighted average shares outstanding for the three and nine months ended September 30, 2017 excludes 11,066 and 6,389 potential common shares, respectively, because the effect of including these potential common shares would be antidilutive. Potentially dilutive shares of 5,940 and 6,864 were excluded from the calculation of diluted weighted average shares outstanding and diluted earnings per share in the three and nine months ended September 30, 2016, respectively, because the Company was in a loss position in those periods. As a result of ASU No. 2016-09 – Compensation – Stock Compensation As of September 30, 2017, the amount of outstanding options, restricted stock units (“RSUs”), and performance restricted stock units (“PRSUs”) was 13,611, 1,519, and 584, respectively.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments	7. Derivative Instruments The Company enters into interest rate swap agreements as a means to partially hedge its variable interest rate risk on debt instruments. The notional value of these swap agreements is $420,000, which represents a total of approximately 54% of term debt outstanding at September 30, 2017 and effectively fixes the variable rate in a range of 2.92% to 3.12% for the portion of the debt that is hedged. The interest rate swap agreements terminate on September 5, 2019. The derivative instruments are recorded on the balance sheet at their fair values. Changes in the fair value of derivatives are recorded each period in current earnings or in other comprehensive income, depending on whether a derivative is designated as part of a hedging relationship and, if it is, depending on the type of hedging relationship. For cash flow hedges in which the Company is hedging the variability of cash flows related to a variable-rate liability, the effective portion of the gain or loss on the derivative instrument is reported in other comprehensive income in the periods during which earnings are impacted by the variability of the cash flows of the hedged item. The ineffective portion of all hedges is recognized in current period earnings. As interest expense is accrued on the debt obligation, amounts in accumulated other comprehensive income (loss) related to the interest rate swaps are reclassified into income to obtain a net cost on the debt obligation equal to the effective yield of the fixed rate of each swap. In the event an interest rate swap is terminated prior to maturity, gains or losses in accumulated other comprehensive income (loss) remain deferred and are reclassified into earnings in the periods in which the hedged forecasted transaction affects earnings. The Company formally designates and documents instruments at inception that qualify for hedge accounting of underlying exposures in accordance with GAAP. Both at inception and for each reporting period, the Company assesses whether the financial instruments used in hedging transactions are effective in offsetting changes in cash flows of the related underlying exposure. The following table summarizes the fair values and the respective classification in the Condensed Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification September 30, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (10,140 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (10,140 ) $ (14,449 ) In order to represent the ineffective portion of interest rate swap agreements designated as hedges, the Company recognized in interest expense the following in the three and nine months ended September 30, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended September 30, Nine Months Ended September 30, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 2017 2016 Interest rate swap agreements Interest expense (income) $ 3 $ (153 ) $ (71 ) $ 46 $ 3 $ (153 ) $ (71 ) $ 46 The Company currently expects $5,260 to be reclassified from accumulated other comprehensive income (loss) into interest expense within the next twelve months, although this amount could be impacted by the early termination of an interest rate swap agreement that occurred after period-end, and the refinancing of the Company’s long-term debt, as detailed in Note 4.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	8. Fair Value Measurements Financial instruments held by the Company include cash equivalents, accounts receivable, accounts payable, long-term debt (including the current portion thereof) and interest rate swaps. The Company is also liable for contingent consideration from the acquisition of Self-Suspending Proppant LLC (“SSP”) that is subject to fair value measurement. Fair value is defined as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. In determining fair value, the Company utilizes certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and/or the risks inherent in the inputs to the valuation technique. Based on the examination of the inputs used in the valuation techniques, the Company is required to provide the following information according to the fair value hierarchy. The fair value hierarchy ranks the quality and reliability of the information used to determine fair values. Financial assets and liabilities at fair value will be classified and disclosed in one of the following three categories: Level 1 Quoted market prices in active markets for identical assets or liabilities Level 2 Observable market based inputs or unobservable inputs that are corroborated by market data Level 3 Unobservable inputs that are not corroborated by market data A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The carrying value of cash equivalents, accounts receivable and accounts payable are considered to be representative of their fair values because of their short maturities. The carrying value of the Company’s long-term debt (including the current portion thereof) is recognized at amortized cost. The fair value of the Extended Term B-1 Loans and the Term B-2 Loans differs from amortized cost and is valued at prices obtained from a readily-available source for trading non-public debt, which represent quoted prices for identical or similar assets in markets that are not active, and therefore is considered Level 2. The following table presents the fair value as of September 30, 2017 and December 31, 2016 for the Company’s long-term debt: Quoted Other in Active Observable Unobservable Markets Inputs Inputs Long-Term Debt Fair Value Measurements (Level 1) (Level 2) (Level 3) Total September 30, 2017 Term B-2 Loans - 666,025 - 666,025 Extended Term B-1 Loans - 107,979 - 107,979 $ - $ 774,004 $ - $ 774,004 December 31, 2016 Term B-2 Loans - 699,683 - 699,683 Extended Term B-1 Loans - 114,308 - 114,308 $ - $ 813,991 $ - $ 813,991 The following table presents the amounts carried at fair value as of September 30, 2017 and December 31, 2016 for the Company’s other financial instruments. Fair value of interest rate swap agreements is based on the present value of the expected future cash flows, considering the risks involved, and using discount rates appropriate for the maturity date. These are determined using Level 2 inputs. Quoted Other in Active Observable Unobservable Markets Inputs Inputs Recurring Fair Value Measurements (Level 1) (Level 2) (Level 3) Total September 30, 2017 Interest rate swap agreements $ - $ (10,140 ) $ - $ (10,140 ) $ - $ (10,140 ) $ - $ (10,140 ) December 31, 2016 Interest rate swap agreements $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 )

Common Stock and Stock-Based Co

Common Stock and Stock-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Common Stock and Stock-Based Compensation	9. Common Stock and Stock-Based Compensation The Company granted options to purchase 464 and 1,740 shares of common stock in the nine months ended September 30, 2017 and 2016, respectively. The average grant date fair value was $9.73 and $2.24 for options issued in the nine months ended September 30, 2017 and 2016, respectively. The Company issued RSUs of 377 and 1,025 in the nine months ended September 30, 2017 and 2016, respectively. The Company issued PRSUs of 142 and 481 in the nine months ended September 30, 2017 and 2016, respectively. Weighted Weighted Performance Weighted Average Exercise Restricted Average Price at Restricted Average Price at Options Price, Options Stock Units RSU Issue Date Stock Units PRSU Issue Date Outstanding at December 31, 2016 13,598 $ 6.45 1,459 $ 5.10 458 $ 2.28 Granted 464 9.73 377 9.83 142 9.87 Exercised (165 ) 3.39 (251 ) 2.62 - - Forfeited (238 ) 7.91 (66 ) 6.20 (16 ) 3.54 Expired (48 ) 15.96 - - - - Outstanding at September 30, 2017 13,611 $ 6.56 1,519 $ 6.64 584 $ 4.10 The Company recorded $7,582 and $7,366 of stock compensation expense related to these options, RSUs, and PRSUs for the nine months ended September 30, 2017 and 2016, respectively. Stock compensation expense in the nine months ended September 30, 2016 included approximately $2,135 related to a modification of the retirement provisions of the Company’s Long Term Incentive Plans. The modification allows retirement-eligible individuals (defined as age 55, plus 10 years of service) to continue to vest in options following retirement and also allows retired participants to exercise options for up to 10 years from grant date. The modification also accelerates vesting and related expense for awards granted to retirement-eligible individuals. Stock compensation expense is included in selling, general, and administrative expenses on the Consolidated Statements of Income (Loss) and in additional paid-in capital on the Consolidated Balance Sheets.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The Company computes and applies to ordinary income an estimated annual effective tax rate on a quarterly basis based on current and forecasted business levels and activities, including the mix of domestic and foreign results and enacted tax laws. The estimated annual effective tax rate is updated quarterly based on actual results and updated operating forecasts. Ordinary income refers to income (loss) before income tax expense excluding significant, unusual, or infrequently occurring items. The tax effect of an unusual or infrequently occurring item is recorded in the interim period in which it occurs as a discrete item of tax. For the three months ended September 30, 2017, the Company recorded tax expense of $2,754 on income before income taxes of $37,673 resulting in an effective tax rate of 7.3%, compared to a tax benefit of $20,013 on a loss before income taxes of $40,636 resulting in an effective tax rate of 49.2% for the same period of 2016. The decrease in the effective tax rate is primarily attributable to the impact of a tax benefit from a loss carryback recorded in 2016 and an increase in depletion applied against forecasted results in 2017 as compared to 2016, partially offset by the establishment of a valuation allowance reducing the value of certain foreign deferred tax assets during the three months ended September 30, 2017. The effective rate differs from the U.S. federal statutory rate due primarily to depletion and the valuation allowance against certain U.S. tax attributes. For the nine months ended September 30, 2017, the Company recorded tax expense of $2,126 on income before income taxes of $36,158 resulting in an effective tax rate of 5.9%, compared to a tax benefit of $98,786 on a loss before income taxes of $219,058 resulting in an effective tax rate of 45.1% for the same period of 2016. The decrease in the effective tax rate is primarily attributable to the impact of a tax benefit from a loss carryback recorded in 2016, an increase in depletion applied against forecasted results in 2017, as compared to 2016 and discrete tax benefits related to stock compensation, partially offset by the establishment of a valuation allowance reducing the value of certain foreign deferred tax assets during the nine months ended September 30, 2017. The effective rate differs from the U.S. federal statutory rate due primarily to depletion and the valuation allowance against certain U.S. tax attributes.

Defined Benefit Plans

Defined Benefit Plans	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Defined Benefit Plans	11. Defined Benefit Plans The Company maintains two defined benefit pension plans, the Wedron pension plan and the Troy Grove pension plan, covering union employees at certain facilities that provide benefits based upon years of service or a combination of employee earnings and length of service. The benefits under the Wedron plan were frozen effective December 31, 2012 and the benefits under the Troy Grove plan were frozen effective December 31, 2016. Net periodic benefit cost recognized for other Company defined benefit pension plans for the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Components of net periodic benefit cost Service cost $ - 21 $ - $ 63 Interest cost 89 87 267 261 Expected return on plan assets (127 ) (120 ) (381 ) (360 ) Amortization of prior service cost - - - - Amortization of net actuarial loss 61 66 183 175 Net periodic benefit cost $ 23 $ 54 $ 69 $ 139 The Company contributed $53 and $59 during the nine months ended September 30, 2017 and 2016, respectively. Total expected employer contributions during the year ending December 31, 2017 are $69.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	12. Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss) attributable to Fairmount Santrol Holdings Inc. at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,037 ) $ 1,348 $ (8,689 ) Additional pension liability (3,406 ) 1,291 (2,115 ) Unrealized gain (loss) on interest rate hedges (9,269 ) 3,323 (5,946 ) $ (22,712 ) $ 5,962 $ (16,750 ) December 31, 2016 Gross Tax Effect Net Amount Foreign currency translation $ (10,804 ) $ 2,533 $ (8,271 ) Additional pension liability (3,589 ) 1,291 (2,298 ) Unrealized gain (loss) on interest rate hedges (13,146 ) 4,713 (8,433 ) $ (27,539 ) $ 8,537 $ (19,002 ) The following table presents the changes in accumulated other comprehensive income (loss) by component for the nine months ended September 30, 2017: Nine Months Ended September 30, 2017 Unrealized Foreign Additional gain (loss) currency pension on interest translation liability rate hedges Total Beginning balance $ (8,271 ) $ (2,298 ) $ (8,433 ) $ (19,002 ) Other comprehensive income (loss) before reclassifications (418 ) - (829 ) (1,247 ) Amounts reclassified from accumulated other comprehensive income (loss) - 183 3,316 3,499 Ending balance $ (8,689 ) $ (2,115 ) $ (5,946 ) $ (16,750 ) The following table presents the reclassifications out of accumulated other comprehensive income (loss) during the nine months ended September 30, 2017: Amount from accumulated Details about accumulated other other comprehensive Affected line item on comprehensive income (loss) income (loss) the statement of income (loss) Change in fair value of derivative swap agreements Interest rate hedging contracts $ 5,170 Interest expense Tax effect (1,854 ) Tax $ 3,316 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 183 Cost of sales 183 Total before tax Tax effect - Tax expense 183 Net of tax Total reclassifications for the period $ 3,499 Net of tax

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	13. Commitments and Contingent Liabilities The Company has entered into numerous mineral rights agreements, in which payments under the agreements are expensed as incurred. Certain agreements require annual payments while other agreements require payments based upon annual tons mined and others require a combination thereof. As of September 30, 2017, the Company is obligated for an additional $20,000 in future leasehold interest payments for the July 2017 Winkler County, Texas transaction, of which $10,000 was paid in October 2017. Please refer to Note 3 for further detail. The Company has entered into agreements with third party terminal operators whereby certain minimum payments are due regardless of terminal utilization. The Company leases certain machinery, equipment (including railcars), buildings and office space under operating lease arrangements. Total rent expense associated with these leases was $40,625 and $51,130 for the nine months ended September 30, 2017 and 2016, respectively. The Company is subject to a contingent consideration arrangement related to the purchase of SSP, which was accounted for as an acquisition of a group of assets. The contingent consideration is based on a fixed percentage of the cumulative product margin, less certain adjustments, generated by sales of Propel SSP® and other products incorporating the SSP technology for five years commencing on October 1, 2015. The Company entered into an amendment to the SSP purchase agreement on December 17, 2015. This amendment (a) extends the period during which the aggregate earnout payments must equal or exceed $45,000 from the two-year period ending October 1, 2017 until the three-year period ending October 1, 2018; and (b) provides that the aggregate earnout payments during the two-year period ending October 1, 2017 must equal or exceed $15,000 and granted the Seller a security interest in 51% of the equity interests in the SSP technology to secure such $15,000. The amendment does not alter the final threshold earnout amount, which continues to be $195,000 (inclusive of the $45,000 payment, if any) by October 1, 2020. In the event the Company does not make the final threshold earnout payment, the Company would continue to retain a portion of the ownership interest in the technology, the right to a portion of future profits and would no longer be obligated for future earnout payments. The contingent consideration is accrued and capitalized as part of the cost of the acquired technology from the SSP acquisition at the time a payment is probable and reasonably estimable. Based upon current information, as of September 30, 2017, the Company has capitalized and accrued $7,974, which approximates fair value and represents the estimate of the total remaining aggregate earnout payments the Company now intends to pay through October 1, 2020. Certain subsidiaries are defendants in lawsuits in which the alleged injuries are claimed to be silicosis-related and to have resulted, in whole or in part, from exposure to silica-containing products, allegedly including those sold by certain subsidiaries. In the majority of cases, there are numerous other defendants. In accordance with its insurance obligations, the defense of these actions has been tendered to and the cases are being defended by the subsidiaries’ insurance carriers. Management believes that the Company’s substantial level of existing and available insurance coverage combined with various open indemnities is more than sufficient to cover any exposure to silicosis-related expenses. An estimate of the possible loss, if any, cannot be made at this time.

Transactions with Related Parti

Transactions with Related Parties	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Transactions with Related Parties	14. Transactions with Related Parties The Company had purchases from an affiliated entity for freight, logistic services and consulting services related to its operations in China of $103 and $503 in the nine months ended September 30, 2017 and 2016, respectively. The Company pays American Securities LLC (“American Securities”), in accordance with its policy, for Board of Directors’ fees and Company-related expenses, including reimbursement for travel and lodging, market research, and other miscellaneous consulting fees and expenses. Fees and expenses paid to American Securities were $180 and $209 in the nine months ended September 30, 2017 and 2016, respectively.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Reporting	15. Segment Reporting The Company organizes its business into two reportable segments, Proppant Solutions and Industrial & Recreational Products. The reportable segments are consistent with how management views the markets served by the Company and the financial information reviewed by the chief operating decision maker in deciding how to allocate resources and assess performance. The chief operating decision maker primarily evaluates an operating segment’s performance based on segment gross profit, which does not include any selling, general, and administrative costs or corporate costs. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Revenues Proppant Solutions $ 249,751 $ 103,140 $ 589,556 $ 302,705 Industrial & Recreational Products 30,299 31,635 96,303 91,777 Total revenues 280,050 134,775 685,859 394,482 Segment gross profit Proppant Solutions 85,101 6,356 166,820 9,419 Industrial & Recreational Products 14,367 13,546 43,569 37,597 Total segment gross profit 99,468 19,902 210,389 47,016 Operating expenses excluded from segment gross profit Selling, general, and administrative 31,105 17,242 79,438 60,560 Depreciation, depletion, and amortization 20,174 17,759 59,462 54,401 Asset impairments - - - 90,654 Restructuring charges - - - 1,155 Other operating expense (income) (1,594 ) 9,362 (2,299 ) 9,266 Interest expense, net 12,110 16,175 37,630 50,043 Other non-operating income - - - (5 ) Income (loss) before provision (benefit) for income taxes $ 37,673 $ (40,636 ) $ 36,158 $ (219,058 ) The Company's three largest customers accounted for 19%, 14%, and 11%, respectively, of consolidated net revenues in the nine months ended September 30, 2017. In the nine months ended September 30, 2016, the Company's two largest customers accounted for 32% and 11%, respectively, of consolidated net revenues. These are customers of the Company’s Proppant Solutions segment.

Goodwill and Definite-Lived Int

Goodwill and Definite-Lived Intangibles	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Definite-Lived Intangibles	16. Goodwill and Definite-Lived Intangibles As of September 30, 2017, the balance of Goodwill was $15,301, which represents goodwill related to acquisitions in the Company’s Industrial & Recreational Products segment. As part of Company policy in its normal course of business, the Company performed a review of qualitative factors and concluded that, as of September 30, 2017, there were no events or changes in circumstances that would more likely than not result in an impairment of the carrying value of Goodwill. As of September 30, 2017, the balance of the FTSI supply agreement, net of accumulated amortization, was $31,856. At September 30, 2017, the balance of the SSP intangible asset, net of accumulated amortization, was $63,363. Please refer to Note 13 for additional information.

Significant Accounting Polici24

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements of Fairmount Santrol Holdings Inc. and its consolidated subsidiaries (collectively, the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments (which are of a normal, recurring nature) and disclosures necessary for a fair statement of the financial position, results of operations, comprehensive income, and cash flows of the reported interim periods. The condensed consolidated balance sheet as of December 31, 2016 was derived from audited financial statements, but does not include all disclosures required by GAAP. Interim results are not necessarily indicative of the results to be expected for the full year or any other interim period. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements as filed in the 2016 Annual Report on Form 10-K and notes thereto and information included elsewhere in this Quarterly Report on Form 10-Q.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02 – Leases Leases In April and May 2016, the FASB issued ASU No. 2016-10 – Revenue from Contracts with Customers – Identifying Performance Obligations and Licensing Revenue Recognition and Derivatives and Hedging – Recession of SEC Guidance Revenue from Contracts with Customers – Narrow-Scope Improvements and Practical Expedients Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers – Revenue from Contracts with Customers In January 2017, the FASB issued ASU No. 2017-04 – Intangibles – Goodwill and Other (Topic 350) – Simplifying the Test for Goodwill Impairment. In March 2017, the FASB issued ASU No. 2017-07 – Compensation – Retirement Benefits (Topic 715) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In August 2017, the FASB issued ASU No. 2017-12 – Derivatives and Hedging (Topic 815) – Targeted Improvements to Accounting for Hedging Activities

Inventories, net (Tables)

Inventories, net (Tables)	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Schedule of Inventories	At September 30, 2017 and December 31, 2016, inventories consisted of the following: September 30, 2017 December 31, 2016 Raw materials $ 8,385 $ 7,465 Work-in-process 15,371 12,681 Finished goods 45,802 33,760 69,558 53,906 Less: LIFO reserve (1,254 ) (1,256 ) Inventories, net $ 68,304 $ 52,650

Property, Plant, and Equipmen26

Property, Plant, and Equipment, net (Tables)	9 Months Ended
	Sep. 30, 2017
Property Plant And Equipment [Abstract]
Schedule of Property, Plant, and Equipment	At September 30, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: September 30, 2017 December 31, 2016 Land and improvements $ 81,865 $ 86,298 Mineral reserves and mine development 306,074 253,766 Machinery and equipment 589,591 596,962 Buildings and improvements 187,584 161,057 Furniture, fixtures, and other 3,486 3,440 Construction in progress 31,406 6,748 1,200,006 1,108,271 Accumulated depletion and depreciation (432,598 ) (380,536 ) Property, plant, and equipment, net $ 767,408 $ 727,735

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	At September 30, 2017 and December 31, 2016, long-term debt consisted of the following: September 30, 2017 December 31, 2016 Term B-2 Loans 671,596 719,632 Extended Term B-1 Loans 109,760 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 8,511 3,634 Deferred financing costs, net (5,432 ) (7,975 ) 794,507 843,013 Less: current portion (11,772 ) (10,707 ) Long-term debt including leases $ 782,735 $ 832,306

Accrued Expenses and Deferred28

Accrued Expenses and Deferred Revenue (Tables)	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Summary of Accrued Expenses and Deferred Revenue	At September 30, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: September 30, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 11,068 $ 7,018 Accrued bonus 29,280 3,536 Contingent consideration 5,244 2,507 Accrued income taxes 426 421 Accrued real estate taxes 4,401 4,821 Accrued leasehold interest payments 20,000 - Deferred revenue 5,002 75 Other accrued expenses 10,239 7,807 Accrued expenses and deferred revenue $ 85,660 $ 26,185

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings (Loss) per Share	The table below shows the computation of basic and diluted earnings (loss) per share for the three and nine months ended September 30, 2017 and 2016, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Numerator: Net income (loss) attributable to Fairmount Santrol Holdings Inc. $ 34,944 $ (20,625 ) $ 33,839 $ (120,287 ) Denominator: Basic weighted average shares outstanding 224,082 183,620 223,947 168,904 Dilutive effect of employee stock options, RSUs, and PRSUs 2,318 - 5,357 - Diluted weighted average shares outstanding 226,400 183,620 229,304 168,904 Earnings (loss) per common share – basic $ 0.16 $ (0.11 ) $ 0.15 $ (0.71 ) Earnings (loss) per common share – diluted $ 0.15 $ (0.11 ) $ 0.15 $ (0.71 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Instrument and Respective Classification in Condensed Consolidated Balance Sheets	The following table summarizes the fair values and the respective classification in the Condensed Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification September 30, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (10,140 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (10,140 ) $ (14,449 )
Schedule of Interest Expense Recognized on Derivative	In order to represent the ineffective portion of interest rate swap agreements designated as hedges, the Company recognized in interest expense the following in the three and nine months ended September 30, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended September 30, Nine Months Ended September 30, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 2017 2016 Interest rate swap agreements Interest expense (income) $ 3 $ (153 ) $ (71 ) $ 46 $ 3 $ (153 ) $ (71 ) $ 46

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value for Long-term Debt	The following table presents the fair value as of September 30, 2017 and December 31, 2016 for the Company’s long-term debt: Quoted Other in Active Observable Unobservable Markets Inputs Inputs Long-Term Debt Fair Value Measurements (Level 1) (Level 2) (Level 3) Total September 30, 2017 Term B-2 Loans - 666,025 - 666,025 Extended Term B-1 Loans - 107,979 - 107,979 $ - $ 774,004 $ - $ 774,004 December 31, 2016 Term B-2 Loans - 699,683 - 699,683 Extended Term B-1 Loans - 114,308 - 114,308 $ - $ 813,991 $ - $ 813,991
Financial Instruments Carried at Fair Value	The following table presents the amounts carried at fair value as of September 30, 2017 and December 31, 2016 for the Company’s other financial instruments. Fair value of interest rate swap agreements is based on the present value of the expected future cash flows, considering the risks involved, and using discount rates appropriate for the maturity date. These are determined using Level 2 inputs. Quoted Other in Active Observable Unobservable Markets Inputs Inputs Recurring Fair Value Measurements (Level 1) (Level 2) (Level 3) Total September 30, 2017 Interest rate swap agreements $ - $ (10,140 ) $ - $ (10,140 ) $ - $ (10,140 ) $ - $ (10,140 ) December 31, 2016 Interest rate swap agreements $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 )

Common Stock and Stock-Based 32

Common Stock and Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Share Based Compensation Activity of Option and Non-option Instruments	Weighted Weighted Performance Weighted Average Exercise Restricted Average Price at Restricted Average Price at Options Price, Options Stock Units RSU Issue Date Stock Units PRSU Issue Date Outstanding at December 31, 2016 13,598 $ 6.45 1,459 $ 5.10 458 $ 2.28 Granted 464 9.73 377 9.83 142 9.87 Exercised (165 ) 3.39 (251 ) 2.62 - - Forfeited (238 ) 7.91 (66 ) 6.20 (16 ) 3.54 Expired (48 ) 15.96 - - - - Outstanding at September 30, 2017 13,611 $ 6.56 1,519 $ 6.64 584 $ 4.10

Defined Benefit Plans (Tables)

Defined Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2017
Net Periodic Benefit Cost [Member]
Summary of Defined Benefit Plans	Net periodic benefit cost recognized for other Company defined benefit pension plans for the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Components of net periodic benefit cost Service cost $ - 21 $ - $ 63 Interest cost 89 87 267 261 Expected return on plan assets (127 ) (120 ) (381 ) (360 ) Amortization of prior service cost - - - - Amortization of net actuarial loss 61 66 183 175 Net periodic benefit cost $ 23 $ 54 $ 69 $ 139

Accumulated Other Comprehensi34

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive income (loss) attributable to Fairmount Santrol Holdings Inc. at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,037 ) $ 1,348 $ (8,689 ) Additional pension liability (3,406 ) 1,291 (2,115 ) Unrealized gain (loss) on interest rate hedges (9,269 ) 3,323 (5,946 ) $ (22,712 ) $ 5,962 $ (16,750 ) December 31, 2016 Gross Tax Effect Net Amount Foreign currency translation $ (10,804 ) $ 2,533 $ (8,271 ) Additional pension liability (3,589 ) 1,291 (2,298 ) Unrealized gain (loss) on interest rate hedges (13,146 ) 4,713 (8,433 ) $ (27,539 ) $ 8,537 $ (19,002 )
Changes in Accumulated Other Comprehensive Income (Loss) by Component	The following table presents the changes in accumulated other comprehensive income (loss) by component for the nine months ended September 30, 2017: Nine Months Ended September 30, 2017 Unrealized Foreign Additional gain (loss) currency pension on interest translation liability rate hedges Total Beginning balance $ (8,271 ) $ (2,298 ) $ (8,433 ) $ (19,002 ) Other comprehensive income (loss) before reclassifications (418 ) - (829 ) (1,247 ) Amounts reclassified from accumulated other comprehensive income (loss) - 183 3,316 3,499 Ending balance $ (8,689 ) $ (2,115 ) $ (5,946 ) $ (16,750 )
Reclassifications out of Accumulated Other Comprehensive Income (Loss)	The following table presents the reclassifications out of accumulated other comprehensive income (loss) during the nine months ended September 30, 2017: Amount from accumulated Details about accumulated other other comprehensive Affected line item on comprehensive income (loss) income (loss) the statement of income (loss) Change in fair value of derivative swap agreements Interest rate hedging contracts $ 5,170 Interest expense Tax effect (1,854 ) Tax $ 3,316 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 183 Cost of sales 183 Total before tax Tax effect - Tax expense 183 Net of tax Total reclassifications for the period $ 3,499 Net of tax

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Summarized Financial Information for Reportable Segments	The chief operating decision maker primarily evaluates an operating segment’s performance based on segment gross profit, which does not include any selling, general, and administrative costs or corporate costs. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Revenues Proppant Solutions $ 249,751 $ 103,140 $ 589,556 $ 302,705 Industrial & Recreational Products 30,299 31,635 96,303 91,777 Total revenues 280,050 134,775 685,859 394,482 Segment gross profit Proppant Solutions 85,101 6,356 166,820 9,419 Industrial & Recreational Products 14,367 13,546 43,569 37,597 Total segment gross profit 99,468 19,902 210,389 47,016 Operating expenses excluded from segment gross profit Selling, general, and administrative 31,105 17,242 79,438 60,560 Depreciation, depletion, and amortization 20,174 17,759 59,462 54,401 Asset impairments - - - 90,654 Restructuring charges - - - 1,155 Other operating expense (income) (1,594 ) 9,362 (2,299 ) 9,266 Interest expense, net 12,110 16,175 37,630 50,043 Other non-operating income - - - (5 ) Income (loss) before provision (benefit) for income taxes $ 37,673 $ (40,636 ) $ 36,158 $ (219,058 )

Inventories, net - Schedule of

Inventories, net - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 8,385	$ 7,465
Work-in-process	15,371	12,681
Finished goods	45,802	33,760
Inventory gross	69,558	53,906
Less: LIFO reserve	(1,254)	(1,256)
Inventories, net	$ 68,304	$ 52,650

Property, Plant, and Equipmen37

Property, Plant, and Equipment, net - Schedule of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 1,200,006	$ 1,108,271
Accumulated depletion and depreciation	(432,598)	(380,536)
Property, plant, and equipment, net	767,408	727,735
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	81,865	86,298
Mineral Reserves and Mine Development [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	306,074	253,766
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	589,591	596,962
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	187,584	161,057
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	3,486	3,440
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 31,406	$ 6,748

Property, Plant, and Equipmen38

Property, Plant, and Equipment, net - Additional Information (Detail)	Jul. 18, 2017USD ($)aInstallment	Oct. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)
Property, Plant and Equipment [Line Items]
Asset impairments			$ 0	$ 90,654,000
Term of lease agreement	40 years
Area of sand reserves under lease agreement | a	3,250
Initial payment made at lease commencement	$ 20,000,000
Contingent leasehold Interest payments	$ 20,000,000		$ 20,000,000
Number of installments the remaining lease hold interest is payable | Installment	2
Contingent leasehold interest payments payable in each installment	$ 10,000,000
Subsequent Event [Member]
Property, Plant and Equipment [Line Items]
Contingent leasehold Interest payments		$ 10,000,000
Operating lease installment payment		$ 10,000,000
Mineral Reserves And Mine Development [Member]
Property, Plant and Equipment [Line Items]
Capitalization of leasehold interest obligation and related exploratory and transaction costs	$ 40,000,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Industrial Revenue bond	$ 10,000	$ 10,000
Revolving credit facility and other	72	88
Capital leases, net	8,511	3,634
Long term debt	794,507	843,013
Less: current portion	(11,772)	(10,707)
Long-term debt including leases	782,735	832,306
Term B-2 Loans [Member]
Debt Instrument [Line Items]
Term Loans	671,596	719,632
Extended Term B-1 Loans [Member]
Debt Instrument [Line Items]
Term Loans	109,760	117,634
Term Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs, net	$ (5,432)	$ (7,975)

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Nov. 01, 2017	Jun. 27, 2017	Nov. 17, 2016	Apr. 28, 2016	Nov. 30, 2016	Sep. 30, 2017	Oct. 31, 2017	Nov. 29, 2016	Oct. 17, 2016
Debt Instrument [Line Items]
Prepayment of principal amount		$ 50,000,000		$ 69,580,000
Prepayment of accrued interest				$ 227,000
Repurchases of term loans								$ 213,000,000
Net gain on repurchases of debt					$ 5,110,000
Write-off of unamortized capitalized debt issuance costs		389,000				$ 389,000
Outstanding letters of credit						$ 15,258,000
Barclays Capital Inc [Member] | Term Loan B [Member]
Debt Instrument [Line Items]
Debt instrument, frequency of periodic payment						quarterly
Debt instrument, description of variable rate basis						three-month LIBOR plus 6.0% with a LIBOR floor of 1.0%
Debt instrument refinance description						Should the Company choose to refinance the Term Loan B, it would be subject to a 1.02% premium if refinanced at a lower interest rate within one year of the Closing Date or a 1.01% premium if refinanced at a lower interest rate within two years of the Closing Date.
Subsequent Event [Member] | Barclays Capital Inc [Member] | Term Loan B [Member]
Debt Instrument [Line Items]
Debt instrument borrowings, maturity date	Nov. 1, 2022
Debt instrument principal amount	$ 700,000,000
Debt instrument original issued discount percentage	98.50%
Percentage of annual amortization payments in principal amount for first half of loan period	2.50%
Percentage of annual amortization payments in principal amount for second half of loan period	5.00%
Percentage of premium for refinance within one year of closing date	1.02%
Percentage of premium for refinance within two years of closing date	1.01%
LIBOR [Member] | Subsequent Event [Member] | Barclays Capital Inc [Member] | Term Loan B [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate	6.00%
Debt instrument floor rate	1.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility termination date						Sep. 6, 2018
Leverage ratio						520.00%
Available capacity remaining on the revolving credit facility						$ 84,742,000
Revolving Credit Facility [Member] | Borrowings [Member]
Debt Instrument [Line Items]
Interest rate of borrowings						5.20%
ABL Revolver [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Debt instrument, frequency of periodic payment						quarterly
Debt instrument, maturity date, description						If the Term Loan B (subsequently defined) is still outstanding, then any balance outstanding under the ABL Revolver is due on May 1, 2022.
ABL Revolver [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Debt instrument term	5 years
Line of credit facility maximum borrowing capacity	$ 125,000,000
Line of credit facility increasing amount	50,000,000
Line of credit facility option to increase maximum borrowing capacity	$ 175,000,000
Minimum fixed charge coverage ratio							110.00%
ABL Revolver [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member] | If Term Loan B Not Outstanding [Member]
Debt Instrument [Line Items]
Debt instrument borrowings, maturity date	Nov. 1, 2022
ABL Revolver [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member] | If Term Loan B Still Outstanding [Member]
Debt Instrument [Line Items]
Debt instrument borrowings, maturity date	May 1, 2022
ABL Revolver [Member] | LIBOR [Member] | Minimum [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate	1.50%
ABL Revolver [Member] | LIBOR [Member] | Maximum [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate	2.00%
ABL Revolver [Member] | Federal Funds Open Rate [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate	0.50%
ABL Revolver [Member] | Daily LIBOR [Member] | Subsequent Event [Member] | PNC Capital Markets LLC [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate	1.00%
Extended Term B-1 Loans [Member]
Debt Instrument [Line Items]
Prepayment of principal amount		7,021,000
Repurchases of term loans								$ 37,867,000	$ 3,000,000
Repurchased term loan as percentage of par									91.50%
Repurchased term loan as average percentage of par								96.30%
Interest rate of borrowings						4.70%
Term B-1 Loans [Member] | March 2017 [Member]
Debt Instrument [Line Items]
Prepayment of principal amount			$ 16,766,000
2016 Extended Term Loans [Member]
Debt Instrument [Line Items]
Prepayment of principal amount			$ 69,580,000
Term B-2 Loans [Member]
Debt Instrument [Line Items]
Prepayment of principal amount		$ 42,979,000
Repurchases of term loans								$ 175,133,000
Repurchased term loan as average percentage of par								96.30%
Interest rate of borrowings						4.70%
Industrial Revenue Bond [Member]
Debt Instrument [Line Items]
Debt instrument face amount						$ 10,000,000
Applicable margin on interest rate						0.95%
Letter of credit						$ 10,000,000
Debt instrument borrowings, maturity date						Sep. 1, 2027

Accrued Expenses and Deferred41

Accrued Expenses and Deferred Revenue - Summary of Accrued Expenses and Deferred Revenue (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Payables And Accruals [Abstract]
Accrued payroll and fringe benefits	$ 11,068	$ 7,018
Accrued bonus	29,280	3,536
Contingent consideration	5,244	2,507
Accrued income taxes	426	421
Accrued real estate taxes	4,401	4,821
Accrued leasehold interest payments	20,000
Deferred revenue	5,002	75
Other accrued expenses	10,239	7,807
Accrued expenses and deferred revenue	$ 85,660	$ 26,185

Earnings (Loss) per Share - Com

Earnings (Loss) per Share - Computation of Basic and Diluted Earnings (Loss) per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 34,944	$ (20,625)	$ 33,839	$ (120,287)
Denominator:
Basic weighted average shares outstanding	224,082,000	183,620,000	223,947,000	168,904,000
Dilutive effect of employee stock options, RSUs, and PRSUs	2,318,000	0	5,357,000	0
Diluted weighted average shares outstanding	226,400,000	183,620,000	229,304,000	168,904,000
Earnings (loss) per common share – basic	$ 0.16	$ (0.11)	$ 0.15	$ (0.71)
Earnings (loss) per common share – diluted	$ 0.15	$ (0.11)	$ 0.15	$ (0.71)

Earnings (Loss) per Share - Add

Earnings (Loss) per Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Earnings Per Share Basic [Line Items]
Securities excluded from computation of earning per share	11,066	5,940	6,389	6,864
Outstanding options	13,611		13,611		13,598
Restricted Stock Units (RSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	1,519		1,519		1,459
Performance Restricted Stock Units (PRSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	584		584		458

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - Interest Rate Swap Agreements [Member]	9 Months Ended
	Sep. 30, 2017USD ($)
Derivative [Line Items]
Notional amount of swap agreements	$ 420,000,000
Notional amount as percent of term debt outstanding	54.00%
Interest rate swap agreement, terminate date	Sep. 5, 2019
Interest Expense [Member]
Derivative [Line Items]
Reclassification from Accumulated other comprehensive income (loss)	$ 5,260,000
Reclassification from accumulated other comprehensive income (loss), estimate of time to transfer	12 months
Minimum [Member]
Derivative [Line Items]
Derivative variable interest rate	2.92%
Maximum [Member]
Derivative [Line Items]
Derivative variable interest rate	3.12%

Derivative Instruments - Fair V

Derivative Instruments - Fair Values of Derivative Instrument and Respective Classification in Condensed Consolidated Balance Sheets (Detail) - Interest Rate Swap Agreements [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Derivative, fair value	$ (10,140)	$ (14,449)
Designated as Cash Flow Hedges [Member] | Other Long-Term Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative liabilities	$ (10,140)	(14,488)
Designated as Cash Flow Hedges [Member] | Other Assets [Member]
Derivatives Fair Value [Line Items]
Derivative assets		$ 39

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Interest Expense Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivatives Fair Value [Line Items]
Interest expense (income)	$ (12,110)	$ (16,175)	$ (37,630)	$ (50,043)
Interest Rate Swap Agreements [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Derivatives Fair Value [Line Items]
Interest expense (income)	3	(153)	(71)	46
Interest Rate Swap Agreements [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] | Interest Income Expense [Member]
Derivatives Fair Value [Line Items]
Interest expense (income)	$ 3	$ (153)	$ (71)	$ 46

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value for Long-term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	$ 774,004	$ 813,991
Term B-2 Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	666,025	699,683
Extended Term B-1 Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	107,979	114,308
Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	774,004	813,991
Other Observable Inputs (Level 2) [Member] | Term B-2 Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	666,025	699,683
Other Observable Inputs (Level 2) [Member] | Extended Term B-1 Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	$ 107,979	$ 114,308

Fair Value Measurements - Finan

Fair Value Measurements - Financial Instruments Carried at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Interest Rate Swap Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	$ (10,140)	$ (14,449)
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Asset (Liability)	(10,140)	(14,449)
Recurring Fair Value Measurements [Member] | Interest Rate Swap Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	(10,140)	(14,449)
Other Observable Inputs (Level 2) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Asset (Liability)	(10,140)	(14,449)
Other Observable Inputs (Level 2) [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Swap Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	$ (10,140)	$ (14,449)

Common Stock and Stock Based Co

Common Stock and Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted to purchase	464	1,740
Average grant date fair value of options issued	$ 9.73	$ 2.24
Stock compensation expense	$ 7,582	$ 7,366
Stock compensation expense related to modification of retirement provisions		$ 2,135
Modification of retirement provision, description	The modification allows retirement-eligible individuals (defined as age 55, plus 10 years of service) to continue to vest in options following retirement and also allows retired participants to exercise options for up to 10 years from grant date.
Retired participants options exercise period from grant date	10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units issued	377	1,025
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units issued	142	481

Common Stock and Stock Based 50

Common Stock and Stock Based Compensation - Summary of Share Based Compensation Activity of Option and Non-option Instruments (Detail) - $ / shares shares in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding Beginning Balance	13,598
Options, Granted	464	1,740
Options, Exercised	(165)
Options, Forfeited	(238)
Options, Expired	(48)
Options, Outstanding Ending Balance	13,611
Weighted Average Exercise Price, Options, Outstanding Beginning Balance	$ 6.45
Weighted Average Exercise Price, Options, Granted	9.73
Weighted Average Exercise Price, Options, Exercised	3.39
Weighted Average Exercise Price, Options, Forfeited	7.91
Weighted Average Exercise Price, Options, Expired	15.96
Weighted Average Exercise Price, Options, Outstanding Ending Balance	$ 6.56
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Beginning Balance	1,459
Granted	377
Exercised	(251)
Forfeited	(66)
Outstanding Ending Balance	1,519
Weighted Average Price at Issue Date, Outstanding Beginning Balance	$ 5.10
Weighted Average Price at Issue Date, Granted	9.83
Weighted Average Price at Issue Date, Exercised	2.62
Weighted Average Price at Issue Date, Forfeited	6.20
Weighted Average Price at Issue Date, Outstanding Ending Balance	$ 6.64
Performance Restricted Stock Units (PRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Beginning Balance	458
Granted	142
Forfeited	(16)
Outstanding Ending Balance	584
Weighted Average Price at Issue Date, Outstanding Beginning Balance	$ 2.28
Weighted Average Price at Issue Date, Granted	9.87
Weighted Average Price at Issue Date, Forfeited	3.54
Weighted Average Price at Issue Date, Outstanding Ending Balance	$ 4.10

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 2,754	$ (20,013)	$ 2,126	$ (98,786)
Income (Loss) before income taxes	$ 37,673	$ (40,636)	$ 36,158	$ (219,058)
Effective income tax rate	7.30%	49.20%	5.90%	45.10%

Defined Benefit Plans - Additio

Defined Benefit Plans - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)Pension_Plan	Sep. 30, 2016USD ($)
Compensation And Retirement Disclosure [Abstract]
Number of defined benefit pension plans | Pension_Plan	2
Pension and postretirement contributions	$ 53	$ 59
Expected contribution for pension plan remaining fiscal year	$ 69

Defined Benefit Plans - Summary

Defined Benefit Plans - Summary of Defined Benefit Plans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Compensation And Retirement Disclosure [Abstract]
Service cost		$ 21		$ 63
Interest cost	$ 89	87	$ 267	261
Expected return on plan assets	(127)	(120)	(381)	(360)
Amortization of net actuarial loss	61	66	183	175
Net periodic benefit cost	$ 23	$ 54	$ 69	$ 139

Accumulated Other Comprehensi54

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	$ (22,712)	$ (27,539)
Accumulated other comprehensive income (loss), Tax Effect	5,962	8,537
Accumulated other comprehensive income (loss)	(16,750)	(19,002)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(10,037)	(10,804)
Accumulated other comprehensive income (loss), Tax Effect	1,348	2,533
Accumulated other comprehensive income (loss)	(8,689)	(8,271)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(3,406)	(3,589)
Accumulated other comprehensive income (loss), Tax Effect	1,291	1,291
Accumulated other comprehensive income (loss)	(2,115)	(2,298)
Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(9,269)	(13,146)
Accumulated other comprehensive income (loss), Tax Effect	3,323	4,713
Accumulated other comprehensive income (loss)	$ (5,946)	$ (8,433)

Accumulated Other Comprehensi55

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	$ 251,120
Other comprehensive income (loss) before reclassifications	(1,247)
Amounts reclassified from accumulated other comprehensive income (loss)	3,499
Ending balances	295,856
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(19,002)
Ending balances	(16,750)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(8,271)
Other comprehensive income (loss) before reclassifications	(418)
Ending balances	(8,689)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(2,298)
Amounts reclassified from accumulated other comprehensive income (loss)	183
Ending balances	(2,115)
Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(8,433)
Other comprehensive income (loss) before reclassifications	(829)
Amounts reclassified from accumulated other comprehensive income (loss)	3,316
Ending balances	$ (5,946)

Accumulated Other Comprehensi56

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 12,110	$ 16,175	$ 37,630	$ 50,043
Income (loss) before provision (benefit) for income taxes	37,673	(40,636)	36,158	(219,058)
Tax expense (benefit)	2,754	(20,013)	2,126	(98,786)
Net income (loss)	34,919	(20,623)	34,032	(120,272)
Cost of sales	$ 180,582	$ 114,873	475,470	$ 347,466
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)			3,499
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense			5,170
Tax expense (benefit)			(1,854)
Net income (loss)			3,316
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales			183
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Additional Pension Liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before provision (benefit) for income taxes			183
Net income (loss)			$ 183

Commitments and Contingent Li57

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 17, 2015	Oct. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Jul. 18, 2017
Commitments and Contingencies [Line Items]
Contingent leasehold Interest payments			$ 20,000		$ 20,000
Rent expense for lease			$ 40,625	$ 51,130
Self-Suspending Proppant LLC [Member]
Commitments and Contingencies [Line Items]
Commitment period of sales			5 years
Commitment commencing date			Oct. 1, 2015
Aggregate earnout payment from the two-year period ending October 1, 2017 until the three-year period ending October 1, 2018	$ 45,000
Aggregate earnout payment during the two-year period ending October 1, 2017	$ 15,000
Security interest percentage of equity in contingent consideration	51.00%
Contingent consideration	$ 195,000
Capitalized and accrued estimate fair value of total remaining aggregate earnout payments			$ 7,974
Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Contingent leasehold Interest payments		$ 10,000
Operating lease installment payment		$ 10,000

Transactions with Related Par58

Transactions with Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Purchases from an affiliated entity	$ 103	$ 503
American Securities [Member]
Related Party Transaction [Line Items]
Management fees and expense payment	$ 180	$ 209

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017SegmentCustomer	Sep. 30, 2016Customer
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
Number of customers | Customer	3	2
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer One [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	19.00%	32.00%
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer Two [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	14.00%	11.00%
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer Three [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	11.00%

Segment Reporting - Summarized

Segment Reporting - Summarized Financial Information for Reportable Segments (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Revenues	$ 280,050,000	$ 134,775,000	$ 685,859,000	$ 394,482,000
Segment gross profit
Segment gross profit	99,468,000	19,902,000	210,389,000	47,016,000
Operating expenses excluded from segment gross profit
Selling, general, and administrative	31,105,000	17,242,000	79,438,000	60,560,000
Depreciation, depletion, and amortization	20,174,000	17,759,000	59,462,000	54,401,000
Asset impairments			0	90,654,000
Restructuring charges				1,155,000
Other operating expense (income)	(1,594,000)	9,362,000	(2,299,000)	9,266,000
Interest expense, net	12,110,000	16,175,000	37,630,000	50,043,000
Other non-operating income				(5,000)
Income (loss) before provision (benefit) for income taxes	37,673,000	(40,636,000)	36,158,000	(219,058,000)
Proppant Solutions [Member]
Revenues
Revenues	249,751,000	103,140,000	589,556,000	302,705,000
Segment gross profit
Segment gross profit	85,101,000	6,356,000	166,820,000	9,419,000
Industrial & Recreational Products [Member]
Revenues
Revenues	30,299,000	31,635,000	96,303,000	91,777,000
Segment gross profit
Segment gross profit	$ 14,367,000	$ 13,546,000	$ 43,569,000	$ 37,597,000

Goodwill and Definite-Lived I61

Goodwill and Definite-Lived Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 15,301	$ 15,301
FTSI Supply Agreement [Member]
Goodwill [Line Items]
Intangible asset, net of accumulated amortization	31,856
SSP Technology [Member]
Goodwill [Line Items]
Intangible asset, net of accumulated amortization	63,363
Industrial & Recreational Products [Member]
Goodwill [Line Items]
Goodwill	$ 15,301