Bison Merger Sub I (FMSA) 10-Q 9 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
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		224,080,573

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues	$ 233,226,000	$ 114,249,000	$ 405,809,000	$ 259,707,000
Cost of goods sold (excluding depreciation, depletion, and amortization shown separately)	163,136,000	114,129,000	294,888,000	232,593,000
Operating expenses
Selling, general and administrative expenses	25,863,000	25,040,000	48,333,000	43,318,000
Depreciation, depletion and amortization expense	19,846,000	18,056,000	39,288,000	36,642,000
Asset impairments		90,578,000	0	90,654,000
Restructuring charges		1,155,000		1,155,000
Other operating expense (income)	355,000	(426,000)	(705,000)	(96,000)
Income (loss) from operations	24,026,000	(134,283,000)	24,005,000	(144,559,000)
Interest expense, net	12,983,000	16,606,000	25,520,000	33,868,000
Other non-operating income				(5,000)
Income (loss) before provision (benefit) for income taxes	11,043,000	(150,889,000)	(1,515,000)	(178,422,000)
Provision (benefit) for income taxes	520,000	(63,019,000)	(628,000)	(78,773,000)
Net income (loss)	10,523,000	(87,870,000)	(887,000)	(99,649,000)
Less: Net income attributable to the non-controlling interest	40,000	16,000	218,000	13,000
Net income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 10,483,000	$ (87,886,000)	$ (1,105,000)	$ (99,662,000)
Earnings (loss) per share
Basic	$ 0.05	$ (0.54)		$ (0.62)
Diluted	$ 0.05	$ (0.54)		$ (0.62)
Weighted average number of shares outstanding
Basic	224,015	161,647	223,878	161,547
Diluted	228,184	161,647	223,878	161,547

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 10,523	$ (87,870)	$ (887)	$ (99,649)
Other comprehensive income (loss), before tax
Foreign currency translation adjustment	481	(507)	442	(360)
Pension obligations	61	34	122	108
Change in fair value of derivative agreements	560	(5,296)	2,173	(8,214)
Total other comprehensive income (loss), before tax	1,102	(5,769)	2,737	(8,466)
Provision (benefit) for income taxes related to items of other comprehensive income (loss)	609	(2,436)	1,925	(3,160)
Comprehensive income (loss), net of tax	11,016	(91,203)	(75)	(104,955)
Comprehensive income attributable to the non-controlling interest	40	16	218	13
Comprehensive income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 10,976	$ (91,219)	$ (293)	$ (104,968)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 178,527	$ 194,069
Accounts receivable, net of allowance for doubtful accounts of $2,465 and $3,055 at June 30, 2017 and December 31, 2016, respectively	123,753	78,942
Inventories, net	60,807	52,650
Prepaid expenses and other assets	5,628	7,065
Refundable income taxes	2,487	21,077
Total current assets	371,202	353,803
Property, plant and equipment, net	716,362	727,735
Deferred income taxes	1,244	1,244
Goodwill	15,301	15,301
Intangibles, net	92,524	95,341
Other assets	8,206	9,486
Total assets	1,204,839	1,202,910
Current liabilities
Current portion of long-term debt	12,172	10,707
Accounts payable	51,654	37,263
Accrued expenses and deferred revenue	48,912	26,185
Total current liabilities	112,738	74,155
Long-term debt	783,946	832,306
Deferred income taxes	7,839	7,057
Other long-term liabilities	43,311	38,272
Total liabilities	947,834	951,790
Commitments and contingent liabilities (Note 13)
Equity
Preferred stock: $0.01 par value, 100,000 authorized shares Shares outstanding: 0 at June 30, 2017 and December 31, 2016
Common stock: $0.01 par value, 1,850,000 authorized shares Shares outstanding: 224,081 and 223,601 at June 30, 2017 and December 31, 2016, respectively	2,423	2,422
Additional paid-in capital	298,038	297,649
Retained earnings	263,314	264,852
Accumulated other comprehensive loss	(18,190)	(19,002)
Total equity attributable to Fairmount Santrol Holdings Inc. before treasury stock	545,585	545,921
Less: Treasury stock at cost Shares in treasury: 18,285 and 18,666 at June 30, 2017 and December 31, 2016, respectively	(288,849)	(294,874)
Total equity attributable to Fairmount Santrol Holdings Inc.	256,736	251,047
Non-controlling interest	269	73
Total equity	257,005	251,120
Total liabilities and equity	$ 1,204,839	$ 1,202,910

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,465	$ 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	224,081,000	223,601,000
Shares in treasury	18,285,000	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
Stock options exercised	2,007	$ 6	2,001				2,007
Stock options exercised, shares		587
Stock compensation expense	5,567		5,567				5,567
Tax effect of stock options exercised, forfeited, or expired	(1,297)		(1,297)				(1,297)
Transactions with non-controlling interest	(551)							(551)
Net income (loss)	(99,649)			(99,662)			(99,662)	13
Other comprehensive income (loss)	(5,306)				(5,306)		(5,306)
Ending balances at Jun. 30, 2016	(159,597)	$ 2,397	782,976	305,382	(22,999)	$ (1,227,663)	(159,907)	310
Ending balances, shares at Jun. 30, 2016		162,020				77,765
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	6,025					$ 6,025	6,025
Re-issuance of treasury stock, shares		381				(381)
Share-based awards exercised or distributed	$ (5,489)	$ 1	(5,490)				(5,489)
Share-based awards exercised or distributed, shares		99
Stock options exercised, shares	155
Stock compensation expense	$ 5,879		5,879				5,879
Impact of adoption of ASU 2016-09 (See Note 9) | ASU 2016-09 [Member]	(699)			(699)			(699)
Tax impact of adoption of ASU 2016-09 | ASU 2016-09 [Member]	266			266			266
Transactions with non-controlling interest	(22)							(22)
Net income (loss)	(887)			(1,105)			(1,105)	218
Other comprehensive income (loss)	812				812		812
Ending balances at Jun. 30, 2017	$ 257,005	$ 2,423	$ 298,038	$ 263,314	$ (18,190)	$ (288,849)	$ 256,736	$ 269
Ending balances, shares at Jun. 30, 2017		224,081				18,285

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement Of Cash Flows [Abstract]
Net loss	$ (887)	$ (99,649)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and depletion	35,508	34,284
Amortization	6,305	5,745
Reserve for doubtful accounts	(209)	1,954
Write-off of deferred financing costs	389
Asset impairments		90,654
Inventory write-downs and reserves	1,266	10,302
(Gain) loss on sale of fixed assets	(552)	35
Deferred income taxes and taxes payable	1,044	(59,913)
Refundable income taxes	18,591	(15,535)
Stock compensation expense	5,179	5,567
Change in operating assets and liabilities:
Accounts receivable	(44,602)	10,524
Inventories	(9,423)	3,500
Prepaid expenses and other assets	(991)	3,745
Accounts payable	11,024	298
Accrued expenses and deferred revenue	31,606	(4,450)
Net cash provided by (used in) operating activities	54,248	(12,939)
Cash flows from investing activities
Proceeds from sale of fixed assets	1,216	3,918
Capital expenditures and stripping costs	(14,236)	(21,948)
Earnout payments	(250)
Other investing activities		(150)
Net cash used in investing activities	(13,270)	(18,180)
Cash flows from financing activities
Payments on long-term debt	(4,299)	(5,899)
Prepayments on term loans	(50,000)	(69,580)
Payments on capital leases and other long-term debt	(2,087)	(4,109)
Proceeds from option exercises	536	2,007
Tax payments for withholdings on share-based awards exercised or distributed	(1,091)	(292)
Tax effect of stock options exercised, forfeited, or expired		(1,297)
Transactions with non-controlling interest	(22)	(551)
Net cash used in financing activities	(56,963)	(79,721)
Change in cash and cash equivalents related to assets classified as held-for-sale		1,376
Foreign currency adjustment	443	(387)
Decrease in cash and cash equivalents	(15,542)	(109,851)
Cash and cash equivalents:
Beginning of period	194,069	171,486
End of period	$ 178,527	$ 61,635

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 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 2017-04 – Intangibles – Goodwill and Other (Topic 350) – Simplifying the Test for Goodwill Impairment. In March 2017, the FASB issued ASU 2017-07 – Compensation – Retirement Benefits (Topic 715) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In May 2017, the FASB issued ASU 2017-09 – Compensation – Stock Compensation (Topic 718) – Scope of Modification Accounting • The award’s fair value is the same immediately before and after the original award is modified; • The vesting conditions of the modified award are the same immediately before and after the award is modified; and • The classification of the modified award, as either an equity instrument or liability instrument, is the same immediately before and after the award is modified. This guidance is effective beginning January 1, 2018, with early adoption permitted, and should be applied prospectively. The Company is in the process of evaluating the impact of this new guidance on its financial statements and disclosures.

Inventories, net

Inventories, net	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Inventories, net	2. Inventories, net At June 30, 2017 and December 31, 2016, inventories consisted of the following: June 30, 2017 December 31, 2016 Raw materials $ 8,447 $ 7,465 Work-in-process 11,162 12,681 Finished goods 42,439 33,760 62,048 53,906 Less: LIFO reserve (1,241 ) (1,256 ) Inventories, net $ 60,807 $ 52,650

Property, Plant, and Equipment,

Property, Plant, and Equipment, net	6 Months Ended
	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment, net	3. Property, Plant, and Equipment, net At June 30, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: June 30, 2017 December 31, 2016 Land and improvements $ 82,408 $ 86,298 Mineral reserves and mine development 255,679 253,766 Machinery and equipment 588,637 596,962 Buildings and improvements 187,619 161,057 Furniture, fixtures, and other 3,456 3,440 Construction in progress 14,062 6,748 1,131,861 1,108,271 Accumulated depletion and depreciation (415,499 ) (380,536 ) Property, plant, and equipment, net $ 716,362 $ 727,735 Under ASC 360 Property, Plant, and Equipment

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	4. Long-Term Debt At June 30, 2017 and December 31, 2016, long-term debt consisted of the following: June 30, 2017 December 31, 2016 Term B-2 Loans 673,316 719,632 Extended Term B-1 Loans 110,048 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 8,800 3,634 Deferred financing costs, net (6,118 ) (7,975 ) 796,118 843,013 Less: current portion (12,172 ) (10,707 ) Long-term debt including leases $ 783,946 $ 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. The extended remainder of the Term B-1 Loans, plus accrued interest, was due at maturity on July 15, 2018. Accrued interest related to the $16,723 principal payment (net of original issue discount) due on March 17, 2017 was also due on the same date. 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 June 30, 2017, the Term B-2 Loans, Extended Term B-1 Loans, and the Revolving Credit Facility had actual interest rates of 4.8%, 4.8%, and 4.3%, respectively. Beginning in 2017, the full amount of the Revolving Credit Facility ($100,000) is available, so long as the Company’s leverage ratio does not exceed a revised limit (6.50:1.00 for the first quarter of 2017 declining quarterly to 4.75:1.00 for the fourth quarter of 2017). The Revolving Credit Facility termination date is September 6, 2018. As of June 30, 2017, the Company’s leverage ratio exceeded the revised limits so there was $15,980 available unused capacity on the Revolving Credit Facility and $15,270 committed to outstanding letters of credit. As of June 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 manufacturing facility in Wisconsin. The bond bears interest, which is payable monthly, at a variable rate. The rate was 0.91% at June 30, 2017. The bond matures on September 1, 2027 and is collateralized by a letter of credit of $10,000.

Accrued Expenses and Deferred R

Accrued Expenses and Deferred Revenue	6 Months Ended
	Jun. 30, 2017
Payables And Accruals [Abstract]
Accrued Expenses and Deferred Revenue	5. Accrued Expenses and Deferred Revenue At June 30, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: June 30, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 8,145 $ 7,018 Accrued bonus 14,669 3,536 Contingent consideration 3,220 2,507 Accrued income taxes 347 421 Accrued real estate taxes 3,834 4,821 Deferred revenue 9,316 75 Other accrued expenses 9,381 7,807 Accrued expenses and deferred revenue $ 48,912 $ 26,185

Earnings (Loss) per Share

Earnings (Loss) per Share	6 Months Ended
	Jun. 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 six months ended June 30, 2017 and 2016, respectively: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Net income (loss) attributable to Fairmount Santrol Holdings Inc. $ 10,483 $ (87,886 ) $ (1,105 ) $ (99,662 ) Denominator: Basic weighted average shares outstanding 224,015 161,647 223,878 161,547 Dilutive effect of employee stock options, RSUs, and PRSUs 4,169 - - - Diluted weighted average shares outstanding 228,184 161,647 223,878 161,547 Earnings (loss) per common share - basic $ 0.05 $ (0.54 ) $ - $ (0.62 ) Earnings (loss) per common share - diluted $ 0.05 $ (0.54 ) $ - $ (0.62 ) Potentially dilutive shares were excluded from the calculation of diluted weighted average shares outstanding and diluted earnings per share in the six months ended June 30, 2017 and the three and six months ended June 30, 2016 because the Company was in a loss position in those periods. The calculation of diluted weighted average shares outstanding for the three months ended June 30, 2017 excludes 6,858 potential common shares because the effect of including these potential common shares would be antidilutive. As a result of ASU No. 2016-09 – Compensation – Stock Compensation As of June 30, 2017, the amount of outstanding options, restricted stock units (“RSUs”), and performance restricted stock units (“PRSUs”) was 13,697, 1,534, and 581, respectively.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 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 June 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 mature 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 that 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 June 30, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification June 30, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (11,957 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (11,957 ) $ (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 six months ended June 30, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended June 30, Six Months Ended June 30, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 2017 2016 Interest rate swap agreements Interest expense (income) $ 3 $ 109 $ (74 ) $ 199 $ 3 $ 109 $ (74 ) $ 199 The Company expects 6,068 to be reclassified from accumulated other comprehensive income (loss) into interest expense within the next twelve months.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 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 costs 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 June 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 June 30, 2017 Term B-2 Loans - 639,199 - 639,199 Extended Term B-1 Loans - 103,321 - 103,321 $ - $ 742,520 $ - $ 742,520 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 June 30, 2017 and December 31, 2016 for the Company’s other financial instruments. Fair value of interest rate swap agreements in 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 June 30, 2017 Interest rate swap agreements $ - $ (11,957 ) $ - $ (11,957 ) $ - $ (11,957 ) $ - $ (11,957 ) 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	6 Months Ended
	Jun. 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 448 and 1,731 shares of common stock in the six months ended June 30, 2017 and 2016, respectively. The average grant date fair value was $9.98 and $2.21 for options issued in the six months ended June 30, 2017 and 2016, respectively. The Company issued RSUs of 369 and 1,020 in the six months ended June 30, 2017 and 2016, respectively. The Company issued PRSUs of 139 and 481 in the six months ended June 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 448 9.98 369 9.99 139 10.03 Exercised (155 ) 3.45 (250 ) 2.60 - - Forfeited (181 ) 7.84 (44 ) 6.70 (16 ) 3.54 Expired (13 ) 15.91 - - - - Outstanding at June 30, 2017 13,697 $ 6.57 1,534 $ 6.64 581 $ 4.10 The Company recorded $5,179 and $5,567 of stock compensation expense related to these options, RSUs, and PRSUs for the six months ended June 30, 2017 and 2016, respectively. Stock compensation expense in the second quarter of 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	6 Months Ended
	Jun. 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 June 30, 2017, the Company recorded tax expense of $520 on income before income taxes of $11,043 resulting in an effective tax rate of 4.7%, compared to a tax benefit of $63,019 on a loss before income taxes of $150,889 resulting in an effective tax rate of 41.8% 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. 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 six months ended June 30, 2017, the Company recorded a tax benefit of $628 on a loss before income taxes of $1,515 resulting in an effective tax rate of 41.5%, compared to a tax benefit of $78,773 on a loss before income taxes of $178,422 resulting in an effective tax rate of 44.1% 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, partially offset by the increase in depletion applied against forecasted results in 2017, as compared to 2016, and discrete tax benefits related to stock compensation. 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	6 Months Ended
	Jun. 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 six months ended June 30, 2017 and 2016 is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Components of net periodic benefit cost Service cost $ - 21 $ - $ 42 Interest cost 89 87 178 174 Expected return on plan assets (127 ) (120 ) (254 ) (240 ) Amortization of prior service cost - - - - Amortization of net actuarial loss 61 35 122 109 Net periodic benefit cost $ 23 $ 23 $ 46 $ 85 The Company contributed $36 and $42 during the six months ended June 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)	6 Months Ended
	Jun. 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 June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,362 ) $ 1,387 $ (8,975 ) Additional pension liability (3,467 ) 1,291 (2,176 ) Unrealized gain (loss) on interest rate hedges (10,973 ) 3,934 (7,039 ) $ (24,802 ) $ 6,612 $ (18,190 ) 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 by component for the six months ended June 30, 2017: Six Months Ended June 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 (704 ) - (811 ) (1,515 ) Amounts reclassified from accumulated other comprehensive income (loss) - 122 2,205 2,327 Ending balance $ (8,975 ) $ (2,176 ) $ (7,039 ) $ (18,190 ) The following table presents the reclassifications out of accumulated other comprehensive income during the six months ended June 30, 2017: Amount from accumulated Details about accumulated other other comprehensive Affected line item on comprehensive income income the statement of income Change in fair value of derivative swap agreements Interest rate hedging contracts $ 3,438 Interest expense Tax effect (1,233 ) Tax $ 2,205 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 122 Cost of sales 122 Total before tax Tax effect - Tax expense 122 Net of tax Total reclassifications for the period $ 2,327 Net of tax

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 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. 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 $27,199 and $35,156 for the six months ended June 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 Company 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. 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, the Company accrued and capitalized an additional $964 in the six months ended June 30, 2017. 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	6 Months Ended
	Jun. 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 $85 and $372 in the six months ended June 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 expenses. Fees and expenses paid to American Securities were $134 and $169 in the six months ended June 30, 2017 and 2016, respectively.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 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 June 30, Six Months Ended June 30, 2017 2016 2017 2016 Revenues Proppant Solutions $ 198,812 $ 82,102 $ 339,805 $ 199,565 Industrial & Recreational Products 34,414 32,147 66,004 60,142 Total revenues 233,226 114,249 405,809 259,707 Segment gross profit Proppant Solutions 54,373 (13,529 ) 81,719 3,063 Industrial & Recreational Products 15,717 13,649 29,202 24,051 Total segment gross profit 70,090 120 110,921 27,114 Operating expenses excluded from segment gross profit Selling, general, and administrative 25,863 25,040 48,333 43,318 Depreciation, depletion, and amortization 19,846 18,056 39,288 36,642 Asset impairments - 90,578 - 90,654 Restructuring charges - 1,155 - 1,155 Other operating expense (income) 355 (426 ) (705 ) (96 ) Interest expense, net 12,983 16,606 25,520 33,868 Other non-operating income - - - (5 ) Income (loss) before provision (benefit) for income taxes $ 11,043 $ (150,889 ) $ (1,515 ) $ (178,422 ) The Company's three largest customers accounted for 20%, 13%, and 12%, respectively, of consolidated net revenues in the six months ended June 30, 2017. In the six months ended June 30, 2016, the Company's two largest customers accounted for 34% and 10%, respectively, of consolidated net revenues. These customers are part of the Company’s Proppant Solutions segment.

Definite and Indefinite-Lived I

Definite and Indefinite-Lived Intangibles	6 Months Ended
	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Definite and Indefinite-Lived Intangibles	16. Definite and Indefinite-Lived Intangibles As of June 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 June 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 its intangible assets, including goodwill. With the current volatile market conditions in the oil and gas industry, there could be future changes that impact the carrying value of other long-lived intangibles, including the supply agreement with FTS International Services, LLC (“FTSI”) or the value of the acquired technology from the SSP acquisition. As of June 30, 2017, the balance of the FTSI supply agreement, net of accumulated amortization, was $32,955. Beginning in the first quarter of 2017, the Company began selling products using the SSP technology in full commercial protocol. Accordingly, the Company began to amortize this intangible asset over a 20-year useful life, which is based upon the period over which the asset is expected to contribute directly or indirectly to the future cash flows of the Company. Amortization expense of the SSP technology was $1,526 in the six months ended June 30, 2017. Based on future results of sales of products utilizing the SSP technology, it is possible the fair value of the intangible asset could decline below its cost such that an impairment in carrying value exists.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	17. Subsequent Event 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 reserves are estimated to contain approximately 165,000 tons of fine grade 40/70 and 100 mesh proppant sand. The Company is obligated for a $40,000 leasehold interest payment, as well as royalties based on volumes sold. Upon signing the lease, $20,000 of the leasehold interest payment was made and is non-refundable. The remaining $20,000 of the leasehold interest is payable upon the occurrence of future events, such as mine permitting.

Significant Accounting Polici25

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 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 2017-04 – Intangibles – Goodwill and Other (Topic 350) – Simplifying the Test for Goodwill Impairment. In March 2017, the FASB issued ASU 2017-07 – Compensation – Retirement Benefits (Topic 715) – Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In May 2017, the FASB issued ASU 2017-09 – Compensation – Stock Compensation (Topic 718) – Scope of Modification Accounting • The award’s fair value is the same immediately before and after the original award is modified; • The vesting conditions of the modified award are the same immediately before and after the award is modified; and • The classification of the modified award, as either an equity instrument or liability instrument, is the same immediately before and after the award is modified. This guidance is effective beginning January 1, 2018, with early adoption permitted, and should be applied prospectively. The Company is in the process of evaluating the impact of this new guidance on its financial statements and disclosures.

Inventories, net (Tables)

Inventories, net (Tables)	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Schedule of Inventories	At June 30, 2017 and December 31, 2016, inventories consisted of the following: June 30, 2017 December 31, 2016 Raw materials $ 8,447 $ 7,465 Work-in-process 11,162 12,681 Finished goods 42,439 33,760 62,048 53,906 Less: LIFO reserve (1,241 ) (1,256 ) Inventories, net $ 60,807 $ 52,650

Property, Plant, and Equipmen27

Property, Plant, and Equipment, net (Tables)	6 Months Ended
	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Schedule of Property, Plant, and Equipment	At June 30, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: June 30, 2017 December 31, 2016 Land and improvements $ 82,408 $ 86,298 Mineral reserves and mine development 255,679 253,766 Machinery and equipment 588,637 596,962 Buildings and improvements 187,619 161,057 Furniture, fixtures, and other 3,456 3,440 Construction in progress 14,062 6,748 1,131,861 1,108,271 Accumulated depletion and depreciation (415,499 ) (380,536 ) Property, plant, and equipment, net $ 716,362 $ 727,735

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	At June 30, 2017 and December 31, 2016, long-term debt consisted of the following: June 30, 2017 December 31, 2016 Term B-2 Loans 673,316 719,632 Extended Term B-1 Loans 110,048 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 8,800 3,634 Deferred financing costs, net (6,118 ) (7,975 ) 796,118 843,013 Less: current portion (12,172 ) (10,707 ) Long-term debt including leases $ 783,946 $ 832,306

Accrued Expenses and Deferred29

Accrued Expenses and Deferred Revenue (Tables)	6 Months Ended
	Jun. 30, 2017
Payables And Accruals [Abstract]
Summary of Accrued Expenses and Deferred Revenue	At June 30, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: June 30, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 8,145 $ 7,018 Accrued bonus 14,669 3,536 Contingent consideration 3,220 2,507 Accrued income taxes 347 421 Accrued real estate taxes 3,834 4,821 Deferred revenue 9,316 75 Other accrued expenses 9,381 7,807 Accrued expenses and deferred revenue $ 48,912 $ 26,185

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	6 Months Ended
	Jun. 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 six months ended June 30, 2017 and 2016, respectively: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Net income (loss) attributable to Fairmount Santrol Holdings Inc. $ 10,483 $ (87,886 ) $ (1,105 ) $ (99,662 ) Denominator: Basic weighted average shares outstanding 224,015 161,647 223,878 161,547 Dilutive effect of employee stock options, RSUs, and PRSUs 4,169 - - - Diluted weighted average shares outstanding 228,184 161,647 223,878 161,547 Earnings (loss) per common share - basic $ 0.05 $ (0.54 ) $ - $ (0.62 ) Earnings (loss) per common share - diluted $ 0.05 $ (0.54 ) $ - $ (0.62 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 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 June 30, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification June 30, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (11,957 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (11,957 ) $ (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 six months ended June 30, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended June 30, Six Months Ended June 30, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 2017 2016 Interest rate swap agreements Interest expense (income) $ 3 $ 109 $ (74 ) $ 199 $ 3 $ 109 $ (74 ) $ 199

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value for Long-term Debt	The following table presents the fair value as of June 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 June 30, 2017 Term B-2 Loans - 639,199 - 639,199 Extended Term B-1 Loans - 103,321 - 103,321 $ - $ 742,520 $ - $ 742,520 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 June 30, 2017 and December 31, 2016 for the Company’s other financial instruments. Fair value of interest rate swap agreements in 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 June 30, 2017 Interest rate swap agreements $ - $ (11,957 ) $ - $ (11,957 ) $ - $ (11,957 ) $ - $ (11,957 ) December 31, 2016 Interest rate swap agreements $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 ) $ - $ (14,449 )

Common Stock and Stock-Based 33

Common Stock and Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 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 448 9.98 369 9.99 139 10.03 Exercised (155 ) 3.45 (250 ) 2.60 - - Forfeited (181 ) 7.84 (44 ) 6.70 (16 ) 3.54 Expired (13 ) 15.91 - - - - Outstanding at June 30, 2017 13,697 $ 6.57 1,534 $ 6.64 581 $ 4.10

Defined Benefit Plans (Tables)

Defined Benefit Plans (Tables)	6 Months Ended
	Jun. 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 six months ended June 30, 2017 and 2016 is as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Components of net periodic benefit cost Service cost $ - 21 $ - $ 42 Interest cost 89 87 178 174 Expected return on plan assets (127 ) (120 ) (254 ) (240 ) Amortization of prior service cost - - - - Amortization of net actuarial loss 61 35 122 109 Net periodic benefit cost $ 23 $ 23 $ 46 $ 85

Accumulated Other Comprehensi35

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 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 June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,362 ) $ 1,387 $ (8,975 ) Additional pension liability (3,467 ) 1,291 (2,176 ) Unrealized gain (loss) on interest rate hedges (10,973 ) 3,934 (7,039 ) $ (24,802 ) $ 6,612 $ (18,190 ) 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 by Component	The following table presents the changes in accumulated other comprehensive income by component for the six months ended June 30, 2017: Six Months Ended June 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 (704 ) - (811 ) (1,515 ) Amounts reclassified from accumulated other comprehensive income (loss) - 122 2,205 2,327 Ending balance $ (8,975 ) $ (2,176 ) $ (7,039 ) $ (18,190 )
Reclassifications out of Accumulated Other Comprehensive Income	The following table presents the reclassifications out of accumulated other comprehensive income during the six months ended June 30, 2017: Amount from accumulated Details about accumulated other other comprehensive Affected line item on comprehensive income income the statement of income Change in fair value of derivative swap agreements Interest rate hedging contracts $ 3,438 Interest expense Tax effect (1,233 ) Tax $ 2,205 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 122 Cost of sales 122 Total before tax Tax effect - Tax expense 122 Net of tax Total reclassifications for the period $ 2,327 Net of tax

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 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 June 30, Six Months Ended June 30, 2017 2016 2017 2016 Revenues Proppant Solutions $ 198,812 $ 82,102 $ 339,805 $ 199,565 Industrial & Recreational Products 34,414 32,147 66,004 60,142 Total revenues 233,226 114,249 405,809 259,707 Segment gross profit Proppant Solutions 54,373 (13,529 ) 81,719 3,063 Industrial & Recreational Products 15,717 13,649 29,202 24,051 Total segment gross profit 70,090 120 110,921 27,114 Operating expenses excluded from segment gross profit Selling, general, and administrative 25,863 25,040 48,333 43,318 Depreciation, depletion, and amortization 19,846 18,056 39,288 36,642 Asset impairments - 90,578 - 90,654 Restructuring charges - 1,155 - 1,155 Other operating expense (income) 355 (426 ) (705 ) (96 ) Interest expense, net 12,983 16,606 25,520 33,868 Other non-operating income - - - (5 ) Income (loss) before provision (benefit) for income taxes $ 11,043 $ (150,889 ) $ (1,515 ) $ (178,422 )

Inventories, net - Schedule of

Inventories, net - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 8,447	$ 7,465
Work-in-process	11,162	12,681
Finished goods	42,439	33,760
Inventory gross	62,048	53,906
Less: LIFO reserve	(1,241)	(1,256)
Inventories, net	$ 60,807	$ 52,650

Property, Plant, and Equipmen38

Property, Plant, and Equipment, net - Schedule of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 1,131,861	$ 1,108,271
Accumulated depletion and depreciation	(415,499)	(380,536)
Property, plant, and equipment, net	716,362	727,735
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	82,408	86,298
Mineral Reserves and Mine Development [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	255,679	253,766
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	588,637	596,962
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	187,619	161,057
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	3,456	3,440
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 14,062	$ 6,748

Property, Plant, and Equipmen39

Property, Plant, and Equipment, net - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Property Plant And Equipment Capitalized Interest Costs [Abstract]
Asset impairments	$ 90,578,000	$ 0	$ 90,654,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 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	8,800	3,634
Long term debt	796,118	843,013
Less: current portion	(12,172)	(10,707)
Long-term debt including leases	783,946	832,306
Term B-2 Loans [Member]
Debt Instrument [Line Items]
Term Loans	673,316	719,632
Extended Term B-1 Loans [Member]
Debt Instrument [Line Items]
Term Loans	110,048	117,634
Term Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs, net	$ (6,118)	$ (7,975)

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Jun. 27, 2017	Nov. 17, 2016	Apr. 28, 2016	Nov. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	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
Debt instrument borrowings, maturity date					Sep. 1, 2027
Outstanding term loans					$ 72,000	$ 88,000
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					15,270,000
Industrial revenue bond outstanding					$ 10,000,000
Applicable margin on interest rate					0.91%
Letter of credit					$ 10,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility termination date					Sep. 6, 2018
Available capacity remaining on the revolving credit facility					$ 15,980,000
Revolving Credit Facility [Member] | Borrowings [Member]
Debt Instrument [Line Items]
Interest rate of borrowings					4.30%
3/17/2017 [Member]
Debt Instrument [Line Items]
Debt instrument borrowings, maturity date					Mar. 17, 2017
Outstanding term loans					$ 16,723,000
First Quarter of 2017 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total Revolving Credit Facility					$ 100,000,000
First Quarter of 2017 [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio					650.00%
Fourth Quarter of 2017 [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio					475.00%
2016 Extended Term Loans [Member]
Debt Instrument [Line Items]
Prepayment of principal amount		$ 69,580,000
Debt instrument borrowings, maturity date			Jul. 15, 2018
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%
Extended Term B-1 Loans [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate of borrowings					4.80%
Term B-1 Loans [Member] | March 2017 [Member]
Debt Instrument [Line Items]
Prepayment of principal amount		$ 16,766,000
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%
Term B-2 Loans [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate of borrowings					4.80%

Accrued Expenses and Deferred42

Accrued Expenses and Deferred Revenue - Summary of Accrued Expenses and Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Payables And Accruals [Abstract]
Accrued payroll and fringe benefits	$ 8,145	$ 7,018
Accrued bonus	14,669	3,536
Contingent consideration	3,220	2,507
Accrued income taxes	347	421
Accrued real estate taxes	3,834	4,821
Deferred revenue	9,316	75
Other accrued expenses	9,381	7,807
Accrued expenses and deferred revenue	$ 48,912	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income (loss) attributable to Fairmount Santrol Holdings Inc.	$ 10,483	$ (87,886)	$ (1,105)	$ (99,662)
Denominator:
Basic weighted average shares outstanding	224,015,000	161,647,000	223,878,000	161,547,000
Dilutive effect of employee stock options, RSUs, and PRSUs	4,169,000	0	0	0
Diluted weighted average shares outstanding	228,184,000	161,647,000	223,878,000	161,547,000
Earnings (loss) per common share - basic	$ 0.05	$ (0.54)		$ (0.62)
Earnings (loss) per common share - diluted	$ 0.05	$ (0.54)		$ (0.62)

Earnings (Loss) per Share - Add

Earnings (Loss) per Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Earnings Per Share Basic [Line Items]
Securities excluded from computation of earning per share	6,858
Outstanding options	13,697	13,598
Restricted Stock Units (RSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	1,534	1,459
Performance Restricted Stock Units (PRSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	581	458

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - Interest Rate Swap Agreements [Member] - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2018
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, maturity date	Sep. 5, 2019
Scenario, Forecast [Member] | Interest Expense [Member]
Derivative [Line Items]
Reclassification from Accumulated other comprehensive income (loss)		$ 6,068,000
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	Jun. 30, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Derivative, fair value	$ (11,957)	$ (14,449)
Designated as Cash Flow Hedges [Member] | Other Long-Term Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative liabilities	$ (11,957)	(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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivatives Fair Value [Line Items]
Interest expense (income)	$ (12,983)	$ (16,606)	$ (25,520)	$ (33,868)
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	109	(74)	199
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	$ 109	$ (74)	$ 199

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value for Long-term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	$ 742,520	$ 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	639,199	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	103,321	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	742,520	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	639,199	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	$ 103,321	$ 114,308

Fair Value Measurements - Finan

Fair Value Measurements - Financial Instruments Carried at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 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	$ (11,957)	$ (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)	(11,957)	(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	(11,957)	(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)	(11,957)	(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	$ (11,957)	$ (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	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted to purchase		448	1,731
Average grant date fair value of options issued		$ 9.98	$ 2.21
Stock compensation expense	$ 2,135	$ 5,179	$ 5,567
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		369	1,020
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units issued		139	481

Common Stock and Stock Based 51

Common Stock and Stock Based Compensation - Summary of Share Based Compensation Activity of Option and Non-option Instruments (Detail) - $ / shares shares in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding Beginning Balance	13,598
Options, Granted	448	1,731
Options, Exercised	(155)
Options, Forfeited	(181)
Options, Expired	(13)
Options, Outstanding Ending Balance	13,697
Weighted Average Exercise Price, Options, Outstanding Beginning Balance	$ 6.45
Weighted Average Exercise Price, Options, Granted	9.98
Weighted Average Exercise Price, Options, Exercised	3.45
Weighted Average Exercise Price, Options, Forfeited	7.84
Weighted Average Exercise Price, Options, Expired	15.91
Weighted Average Exercise Price, Options, Outstanding Ending Balance	$ 6.57
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Beginning Balance	1,459
Granted	369
Exercised	(250)
Forfeited	(44)
Outstanding Ending Balance	1,534
Weighted Average Price at Issue Date, Outstanding Beginning Balance	$ 5.10
Weighted Average Price at Issue Date, Granted	9.99
Weighted Average Price at Issue Date, Exercised	2.60
Weighted Average Price at Issue Date, Forfeited	6.70
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	139
Forfeited	(16)
Outstanding Ending Balance	581
Weighted Average Price at Issue Date, Outstanding Beginning Balance	$ 2.28
Weighted Average Price at Issue Date, Granted	10.03
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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 520	$ (63,019)	$ (628)	$ (78,773)
Income (Loss) before income taxes	$ 11,043	$ (150,889)	$ (1,515)	$ (178,422)
Effective income tax rate	4.70%	41.80%	41.50%	44.10%

Defined Benefit Plans - Additio

Defined Benefit Plans - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)Pension_Plan	Jun. 30, 2016USD ($)	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit pension plans | Pension_Plan	2
Pension and postretirement contributions	$ 36	$ 42
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Compensation And Retirement Disclosure [Abstract]
Service cost		$ 21		$ 42
Interest cost	$ 89	87	$ 178	174
Expected return on plan assets	(127)	(120)	(254)	(240)
Amortization of net actuarial loss	61	35	122	109
Net periodic benefit cost	$ 23	$ 23	$ 46	$ 85

Accumulated Other Comprehensi55

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	$ (24,802)	$ (27,539)
Accumulated other comprehensive income (loss), Tax Effect	6,612	8,537
Accumulated other comprehensive income (loss)	(18,190)	(19,002)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(10,362)	(10,804)
Accumulated other comprehensive income (loss), Tax Effect	1,387	2,533
Accumulated other comprehensive income (loss)	(8,975)	(8,271)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(3,467)	(3,589)
Accumulated other comprehensive income (loss), Tax Effect	1,291	1,291
Accumulated other comprehensive income (loss)	(2,176)	(2,298)
Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(10,973)	(13,146)
Accumulated other comprehensive income (loss), Tax Effect	3,934	4,713
Accumulated other comprehensive income (loss)	$ (7,039)	$ (8,433)

Accumulated Other Comprehensi56

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income by Component (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	$ 251,120
Other comprehensive income (loss) before reclassifications	(1,515)
Amounts reclassified from accumulated other comprehensive income (loss)	2,327
Ending balances	257,005
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(8,271)
Other comprehensive income (loss) before reclassifications	(704)
Ending balances	(8,975)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(2,298)
Amounts reclassified from accumulated other comprehensive income (loss)	122
Ending balances	(2,176)
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	(811)
Amounts reclassified from accumulated other comprehensive income (loss)	2,205
Ending balances	(7,039)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balances	(19,002)
Ending balances	$ (18,190)

Accumulated Other Comprehensi57

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 12,983	$ 16,606	$ 25,520	$ 33,868
Income (loss) before provision (benefit) for income taxes	11,043	(150,889)	(1,515)	(178,422)
Tax expense (benefit)	520	(63,019)	(628)	(78,773)
Net income (loss)	10,523	(87,870)	(887)	(99,649)
Cost of sales	$ 163,136	$ 114,129	294,888	$ 232,593
Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)			2,327
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense			3,438
Tax expense (benefit)			(1,233)
Net income (loss)			2,205
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales			122
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Additional Pension Liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before provision (benefit) for income taxes			122
Net income (loss)			$ 122

Commitments and Contingent Li58

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 17, 2015	Jun. 30, 2017	Jun. 30, 2016
Commitments and Contingencies [Line Items]
Rent expense for lease		$ 27,199	$ 35,156
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
Additional contingent consideration accrued and capitalized		$ 964

Transactions with Related Par59

Transactions with Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Purchases from an affiliated entity	$ 85	$ 372
American Securities [Member]
Related Party Transaction [Line Items]
Management fees and expense payment	$ 134	$ 169

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017SegmentCustomer	Jun. 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	20.00%	34.00%
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer Two [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	13.00%	10.00%
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer Three [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	12.00%

Segment Reporting - Summarized

Segment Reporting - Summarized Financial Information for Reportable Segments (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Revenues	$ 233,226,000	$ 114,249,000	$ 405,809,000	$ 259,707,000
Segment gross profit
Segment gross profit	70,090,000	120,000	110,921,000	27,114,000
Operating expenses excluded from segment gross profit
Selling, general, and administrative	25,863,000	25,040,000	48,333,000	43,318,000
Depreciation, depletion, and amortization	19,846,000	18,056,000	39,288,000	36,642,000
Asset impairments		90,578,000	0	90,654,000
Restructuring charges		1,155,000		1,155,000
Other operating expense (income)	355,000	(426,000)	(705,000)	(96,000)
Interest expense, net	12,983,000	16,606,000	25,520,000	33,868,000
Other non-operating income				(5,000)
Income (loss) before provision (benefit) for income taxes	11,043,000	(150,889,000)	(1,515,000)	(178,422,000)
Proppant Solutions [Member]
Revenues
Revenues	198,812,000	82,102,000	339,805,000	199,565,000
Segment gross profit
Segment gross profit	54,373,000	(13,529,000)	81,719,000	3,063,000
Industrial & Recreational Products [Member]
Revenues
Revenues	34,414,000	32,147,000	66,004,000	60,142,000
Segment gross profit
Segment gross profit	$ 15,717,000	$ 13,649,000	$ 29,202,000	$ 24,051,000

Definite and Indefinite-Lived62

Definite and Indefinite-Lived Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 15,301	$ 15,301
Industrial & Recreational Products [Member]
Goodwill [Line Items]
Goodwill	15,301
FTSI Supply Agreement [Member]
Goodwill [Line Items]
Supply agreement, net of accumulated amortization	$ 32,955
SSP Technology [Member]
Goodwill [Line Items]
Useful life of intangible asset	20 years
Amortization expense of intangible asset	$ 1,526

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - Subsequent Event [Member] Ton in Thousands, $ in Thousands	Jul. 18, 2017USD ($)aTon
Subsequent Event [Line Items]
Term of lease agreement	40 years
Area of sand reserves under lease agreement | a	3,250
Estimated tons of sand in reserves | Ton	165,000
Grades of mesh proppant sand	40/70 and 100
Leasehold interest obligated for payment	$ 40,000
Non-Refundable Leasehold interest Payments	20,000
Contingent leasehold Interest payments	$ 20,000