Bison Merger Sub I (FMSA) 10-Q 4 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 01, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
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		223,943,103

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues	$ 172,583,000	$ 145,458,000
Cost of goods sold (excluding depreciation, depletion, and amortization shown separately)	131,752,000	118,464,000
Operating expenses
Selling, general and administrative expenses	22,470,000	18,278,000
Depreciation, depletion and amortization expense	19,442,000	18,586,000
Asset impairments	0	76,000
Other operating expense (income)	(1,060,000)	330,000
Loss from operations	(21,000)	(10,276,000)
Interest expense, net	12,537,000	17,262,000
Other non-operating expense (income)		(5,000)
Loss before benefit from income taxes	(12,558,000)	(27,533,000)
Benefit from income taxes	(1,148,000)	(15,754,000)
Net loss	(11,410,000)	(11,779,000)
Less: Net income (loss) attributable to the non-controlling interest	178,000	(3,000)
Net loss attributable to Fairmount Santrol Holdings Inc.	$ (11,588,000)	$ (11,776,000)
Loss per share
Basic	$ (0.05)	$ (0.07)
Diluted	$ (0.05)	$ (0.07)
Weighted average number of shares outstanding
Basic	223,739	161,446
Diluted	223,739	161,446

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (11,410)	$ (11,779)
Other comprehensive income (loss), before tax
Foreign currency translation adjustment	(39)	147
Pension obligations	61	74
Change in fair value of derivative agreements	1,613	(2,918)
Total other comprehensive income (loss), before tax	1,635	(2,697)
Provision (benefit) for income taxes related to items of other comprehensive income (loss)	1,316	(724)
Comprehensive loss, net of tax	(11,091)	(13,752)
Comprehensive income (loss) attributable to the non-controlling interest	178	(3)
Comprehensive loss attributable to Fairmount Santrol Holdings Inc.	$ (11,269)	$ (13,749)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 210,664	$ 194,069
Accounts receivable, net of allowance for doubtful accounts of $2,196 and $3,055 at March 31, 2017 and December 31, 2016, respectively	95,345	78,942
Inventories, net	61,688	52,650
Prepaid expenses and other assets	6,240	7,065
Refundable income taxes	19,132	21,077
Total current assets	393,069	353,803
Property, plant and equipment, net	722,461	727,735
Deferred income taxes	1,244	1,244
Goodwill	15,301	15,301
Intangibles, net	94,186	95,341
Other assets	9,023	9,486
Total assets	1,235,284	1,202,910
Current liabilities
Current portion of long-term debt	11,617	10,707
Accounts payable	51,545	37,263
Accrued expenses and deferred revenue	45,435	26,185
Total current liabilities	108,597	74,155
Long-term debt	833,492	832,306
Deferred income taxes	6,893	7,057
Other long-term liabilities	43,105	38,272
Total liabilities	992,087	951,790
Commitments and contingent liabilities (Note 13)
Equity
Preferred stock: $0.01 par value, 100,000 authorized shares Shares outstanding: 0 at March 31, 2017 and December 31, 2016
Common stock: $0.01 par value, 1,850,000 authorized shares Shares outstanding: 223,939 and 223,601 at March 31, 2017 and December 31, 2016, respectively	2,422	2,422
Additional paid-in capital	297,190	297,649
Retained earnings	252,831	264,852
Accumulated other comprehensive loss	(18,683)	(19,002)
Total equity attributable to Fairmount Santrol Holdings Inc. before treasury stock	533,760	545,921
Less: Treasury stock at cost Shares in treasury: 18,409 and 18,666 at March 31, 2017 and December 31, 2016, respectively	(290,813)	(294,874)
Total equity attributable to Fairmount Santrol Holdings Inc.	242,947	251,047
Non-controlling interest	250	73
Total equity	243,197	251,120
Total liabilities and equity	$ 1,235,284	$ 1,202,910

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,196	$ 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	223,939,000	223,601,000
Shares in treasury	18,409,000	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	101	$ 1	100				101
Stock options exercised, shares		70
Stock compensation expense	1,653		1,653				1,653
Tax effect of stock options exercised, forfeited, or expired	(738)		(738)				(738)
Transactions with non-controlling interest	(535)							(535)
Net income (loss)	(11,779)			(11,776)			(11,776)	(3)
Other comprehensive income (loss)	(1,973)				(1,973)		(1,973)
Ending balances at Mar. 31, 2016	(73,639)	$ 2,392	777,720	393,268	(19,666)	$ (1,227,663)	(73,949)	310
Ending balances, shares at Mar. 31, 2016		161,503				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	4,061					$ 4,061	4,061
Re-issuance of treasury stock, shares		257				(257)
Share-based awards exercised or distributed	$ (3,575)		(3,575)				(3,575)
Share-based awards exercised or distributed, shares		81
Stock options exercised, shares	125
Stock compensation expense	$ 3,116		3,116				3,116
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	(1)							(1)
Net income (loss)	(11,410)			(11,588)			(11,588)	178
Other comprehensive income (loss)	319				319		319
Ending balances at Mar. 31, 2017	$ 243,197	$ 2,422	$ 297,190	$ 252,831	$ (18,683)	$ (290,813)	$ 242,947	$ 250
Ending balances, shares at Mar. 31, 2017		223,939				18,409

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement Of Cash Flows [Abstract]
Net loss	$ (11,410)	$ (11,779)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and depletion	17,530	17,451
Amortization	3,130	2,827
Reserve for doubtful accounts	(447)	1,878
Asset impairments		76
Gain on sale of fixed assets	(714)	(112)
Deferred income taxes and taxes payable	119	(16,139)
Refundable income taxes	1,945	2,948
Stock compensation expense	2,416	1,653
Change in operating assets and liabilities:
Accounts receivable	(15,956)	(9,608)
Inventories	(9,038)	1,103
Prepaid expenses and other assets	(1,078)	3,286
Accounts payable	12,981	1,980
Accrued expenses and deferred revenue	26,489	(4,150)
Net cash provided by (used in) operating activities	25,967	(8,586)
Cash flows from investing activities
Proceeds from sale of fixed assets	957	588
Capital expenditures and stripping costs	(7,025)	(13,744)
Other investing activities	(758)
Net cash used in investing activities	(6,826)	(13,156)
Cash flows from financing activities
Payments on long-term debt	(2,170)	(3,128)
Payments on capital leases and other long-term debt	(817)	(1,724)
Proceeds from option exercises	486	101
Tax effect of stock options exercised, forfeited, or expired		(738)
Transactions with non-controlling interest	(1)	(535)
Net cash used in financing activities	(2,502)	(6,024)
Change in cash and cash equivalents related to assets classified as held-for-sale		34
Foreign currency adjustment	(44)	118
Increase (decrease) in cash and cash equivalents	16,595	(27,614)
Cash and cash equivalents:
Beginning of period	194,069	171,486
End of period	$ 210,664	$ 143,872

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 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 March 2016, the FASB issued ASU No. 2016-09 – Compensation – Stock Compensation 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

Inventories, net

Inventories, net	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Inventories, net	2. Inventories, net At March 31, 2017 and December 31, 2016, inventories consisted of the following: March 31, 2017 December 31, 2016 Raw materials $ 8,278 $ 7,465 Work-in-process 10,717 12,681 Finished goods 43,925 33,760 62,920 53,906 Less: LIFO reserve (1,232 ) (1,256 ) Inventories, net $ 61,688 $ 52,650

Property, Plant, and Equipment,

Property, Plant, and Equipment, net	3 Months Ended
	Mar. 31, 2017
Property Plant And Equipment [Abstract]
Property, Plant, and Equipment, net	3. Property, Plant, and Equipment, net At March 31, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: March 31, 2017 December 31, 2016 Land and improvements $ 79,435 $ 86,298 Mineral reserves and mine development 255,771 253,766 Machinery and equipment 585,973 596,962 Buildings and improvements 187,425 161,057 Furniture, fixtures, and other 3,431 3,440 Construction in progress 8,463 6,748 1,120,498 1,108,271 Accumulated depletion and depreciation (398,037 ) (380,536 ) Property, plant, and equipment, net $ 722,461 $ 727,735 Under ASC 360 Property, Plant, and Equipment

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	4. Long-Term Debt At March 31, 2017 and December 31, 2016, long-term debt consisted of the following: March 31, 2017 December 31, 2016 Term B-2 Loans 717,922 719,632 Extended Term B-1 Loans 117,347 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 7,007 3,634 Deferred financing costs, net (7,239 ) (7,975 ) 845,109 843,013 Less: current portion (11,617 ) (10,707 ) Long-term debt including leases $ 833,492 $ 832,306 On September 5, 2013, the Company entered into the Second Amended and Restated Credit Agreement (the “2013 Amended Credit Agreement”). The 2013 Amended Credit Agreement initially contained a revolving credit facility (“Revolving Credit Facility”) and two tranches of term loans, a term B-1 facility (“Term B-1 Loans”) and a term B-2 facility (“Term B-2 Loans”). The Revolving Credit Facility, and the Term B-1 and Term B-2 Loans are secured by a first priority lien on substantially all of the Company’s domestic assets. The 2013 Amended Credit Agreement was amended in March 2014, April 2015, and May 2015 and joinder agreements were entered into as of August 2014 and September 2014. These amendments and joinder agreements made various changes to maturity dates and interest rate margins. In addition, amounts that were initially Term B-1 Loans and balances on the Revolving Credit Facility were converted into term loans with essentially the same terms as the Term B-2 Loans (the “Extended Term B-1 Loans”). The applicable margin for Term B-1 and Term B-2 Base Rate loans was 2.5% and the margin on Term B-1 and Term B-2 Eurodollar Rate loans was 3.5%. The Revolving Credit Facility, the Extended Term B-1 Loans, and Term B-2 Loans are secured by a first priority lien on substantially all of the Company’s domestic assets. On September 30, 2015, the Company entered into an amendment to the 2013 Amended Credit Agreement that modified the Revolving Credit Facility. These modifications consisted primarily of (i) a reduction in the U.S. revolving commitments from $124,000 to $99,000 (while the aggregate Canadian revolving commitment remained at $1,000) and (ii) changes in the financial covenant governing the availability of amounts under the Revolving Credit Facility if, and only if, the Company has drawn, including letters of credit, more than $31,250 on the Revolving Credit Facility. At March 31 2017, the full amount of the revolving commitment ($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. 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 accrued interest of $227 and principal of $69,580 on April 28, 2016 to the lenders consenting to the amendment. Accrued interest on the extended remainder of the Term B-1 Loans was due at maturity on July 15, 2018. Accrued interest related to the $16,723 principal payment 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, $37,867 of the Extended Term B-1 Loans and $175,133 of the Term B-2 Loans. The related gain on the October 2016 debt repurchase and the November 2016 debt repurchase was recorded in operating expense. As of March 31, 2017, the Term B-2 Loans, Extended Term B-1 Loans, and the Revolving Credit Facility had actual interest rates of 4.65%, 4.65%, and 4.3%, respectively. As of March 31, 2017, there was $15,745 available unused capacity on the Revolving Credit Facility and $15,505 committed to outstanding letters of credit. As of March 31, 2017, the Company has 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 0.96% at March 31, 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	3 Months Ended
	Mar. 31, 2017
Payables And Accruals [Abstract]
Accrued Expenses and Deferred Revenue	5. Accrued Expenses and Deferred Revenue At March 31, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: March 31, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 11,549 $ 10,554 Contingent consideration 3,264 2,507 Accrued income taxes 58 421 Accrued real estate taxes 3,642 4,821 Deferred revenue 17,044 75 Other accrued expenses 9,878 7,807 Accrued expenses and deferred revenue $ 45,435 $ 26,185

Earnings (Loss) per Share

Earnings (Loss) per Share	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Numerator: Net loss attributable to Fairmount Santrol Holdings Inc. $ (11,588 ) $ (11,776 ) Denominator: Basic weighted average shares outstanding 223,739 161,446 Dilutive effect of employee stock options, RSUs, and PRSUs - - Diluted weighted average shares outstanding 223,739 161,446 Loss per common share - basic $ (0.05 ) $ (0.07 ) Loss per common share - diluted $ (0.05 ) $ (0.07 ) All potentially dilutive shares were excluded from the calculation of diluted weighted average shares outstanding and diluted earnings per share because the Company was in a loss position in the three months ended March 31, 2017 and 2016. As of March 31, 2017, the amount of outstanding options, RSUs, and PRSUs was 13,887, 1,610, and 597, respectively.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 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 50% of term debt outstanding at March 31, 2017 and effectively fixes the variable rate in a range of 2.92% to 3.115% 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 March 31, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification March 31, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (12,629 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (12,629 ) $ (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 months ended March 31, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended March 31, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 Interest rate swap agreements Interest expense (income) $ (77 ) $ 90 $ (77 ) $ 90 The Company expects 6,384 to be reclassified from accumulated other comprehensive income (loss) into interest expense within the next twelve months.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 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 SSP acquisition 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 March 31, 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 March 31, 2017 Term B-2 Loans - 702,408 - 702,408 Extended Term B-1 Loans - 114,305 - 114,305 $ - $ 816,713 $ - $ 816,713 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 March 31, 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 March 31, 2017 Interest rate swap agreements $ - $ (12,629 ) $ - $ (12,629 ) $ - $ (12,629 ) $ - $ (12,629 ) 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	3 Months Ended
	Mar. 31, 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 443 and 1,532 shares of common stock in the three months ended March 31, 2017 and 2016, respectively. The average grant date fair value was $10.03 and $2.04 for options issued in the three months ended March 31, 2017 and 2016, respectively. The Company issued restricted stock units (“RSUs”) of 366 and 862 in the three months ended March 31, 2017 and 2016, respectively. The Company issued performance restricted stock units (“PRSUs”) of 139 and 407 in the three months ended March 31, 2017 and 2016, respectively. Weighted Weighted Performance Weighted Average 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 443 10.03 366 10.03 139 10.03 Exercised (125 ) 3.87 (211 ) 2.42 - - Forfeited (20 ) 10.62 (4 ) 4.08 - - Expired (9 ) 17.74 - - - - Outstanding at March 31, 2017 13,887 $ 6.57 1,610 $ 6.58 597 $ 4.09 As discussed in Note 1, the FASB issued ASU No. 2016-09 – Compensation – Stock Compensation The Company recorded $2,416 and $1,653 of stock compensation expense related to these options, RSUs, and PRSUs for the three months ended March 31, 2017 and 2016, respectively. 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	3 Months Ended
	Mar. 31, 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 March 31, 2017, the Company recorded a tax benefit of $1,148 on a loss before income taxes of $12,558 resulting in an effective tax rate of 9.1%, compared to a tax benefit of $15,754 on a loss before income taxes of $27,533 resulting in an effective tax rate of 57.2% 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, an increase in depletion applied against forecasted results in 2017 as compared to 2016, and 2017 forecasted U.S. results with nominal tax due to a valuation allowance, offset partly by discrete tax benefits of $577 primarily related to the impacts of 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	3 Months Ended
	Mar. 31, 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 plans were frozen effective December 31, 2012. Net periodic benefit cost recognized for other Company defined benefit pension plans for the three months ended March 31, 2017 and 2016 is as follows: Three Months Ended March 31, 2017 2016 Components of net periodic benefit cost Service cost $ - 22 Interest cost 89 87 Expected return on plan assets (127 ) (120 ) Amortization of prior service cost - 4 Amortization of net actuarial loss 61 70 Net periodic benefit cost $ 23 $ 63 The Company contributed $19 and $25 during the three months ended March 31, 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)	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,843 ) $ 1,795 $ (9,048 ) Additional pension liability (3,528 ) 1,291 (2,237 ) Unrealized gain (loss) on interest rate hedges (11,533 ) 4,135 (7,398 ) $ (25,904 ) $ 7,221 $ (18,683 ) 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 three months ended March 31, 2017: Three Months Ended March 31, 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 (777 ) - 30 (747 ) Amounts reclassified from accumulated other comprehensive income (loss) - 61 1,005 1,066 Ending balance $ (9,048 ) $ (2,237 ) $ (7,398 ) $ (18,683 ) The following table presents the reclassifications out of accumulated other comprehensive income during the three months ended March 31, 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 $ 1,566 Interest expense Tax effect (561 ) Tax $ 1,005 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 61 Cost of sales 61 Total before tax Tax effect - Tax expense 61 Net of tax Total reclassifications for the period $ 1,066 Net of tax

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 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 $13,714 and $17,803 for the three months ended March 31, 2017 and 2016, respectively. The Company is subject to a contingent consideration arrangement related to the purchase of Self-Suspending Proppant LLC (“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 results, the Company accrued and capitalized an additional $757 in the three months ended March 31, 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	3 Months Ended
	Mar. 31, 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 $57 and $263 in the three months ended March 31, 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 $86 and $104 in the three months ended March 31, 2017 and 2016, respectively.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 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 March 31, 2017 2016 Revenues Proppant Solutions $ 140,993 $ 117,463 Industrial & Recreational Products 31,590 27,995 Total revenues 172,583 145,458 Segment gross profit Proppant Solutions 27,346 16,592 Industrial & Recreational Products 13,485 10,402 Total segment gross profit 40,831 26,994 Operating expenses excluded from segment gross profit Selling, general, and administrative 22,470 18,278 Depreciation, depletion, and amortization 19,442 18,586 Asset impairments - 76 Other operating expense (income) (1,060 ) 330 Interest expense, net 12,537 17,262 Other non-operating expense (income) - (5 ) Loss before benefit from income taxes $ (12,558 ) $ (27,533 ) Total assets reported in the Proppant Solutions segment were $513,409 and $477,777 as of March 31, 2017 and December 31, 2016, respectively. Total assets reported in the I&R segment were $61,213 and $57,029 as of March 31, 2017 and December 31, 2016, respectively.

Definite and Indefinite-Lived I

Definite and Indefinite-Lived Intangibles	3 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Definite and Indefinite-Lived Intangibles	16. Definite and Indefinite-Lived Intangibles As of March 31, 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 March 31, 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 March 31, 2017, the balance of the FTSI supply agreement, net of accumulated amortization, was $34,053. 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 $761 in the three months ended March 31, 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.

Significant Accounting Polici24

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 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 March 2016, the FASB issued ASU No. 2016-09 – Compensation – Stock Compensation 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

Inventories, net (Tables)

Inventories, net (Tables)	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Schedule of Inventories	At March 31, 2017 and December 31, 2016, inventories consisted of the following: March 31, 2017 December 31, 2016 Raw materials $ 8,278 $ 7,465 Work-in-process 10,717 12,681 Finished goods 43,925 33,760 62,920 53,906 Less: LIFO reserve (1,232 ) (1,256 ) Inventories, net $ 61,688 $ 52,650

Property, Plant, and Equipmen26

Property, Plant, and Equipment, net (Tables)	3 Months Ended
	Mar. 31, 2017
Property Plant And Equipment [Abstract]
Schedule of Property, Plant, and Equipment	At March 31, 2017 and December 31, 2016, property, plant, and equipment consisted of the following: March 31, 2017 December 31, 2016 Land and improvements $ 79,435 $ 86,298 Mineral reserves and mine development 255,771 253,766 Machinery and equipment 585,973 596,962 Buildings and improvements 187,425 161,057 Furniture, fixtures, and other 3,431 3,440 Construction in progress 8,463 6,748 1,120,498 1,108,271 Accumulated depletion and depreciation (398,037 ) (380,536 ) Property, plant, and equipment, net $ 722,461 $ 727,735

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	At March 31, 2017 and December 31, 2016, long-term debt consisted of the following: March 31, 2017 December 31, 2016 Term B-2 Loans 717,922 719,632 Extended Term B-1 Loans 117,347 117,634 Industrial Revenue bond 10,000 10,000 Revolving credit facility and other 72 88 Capital leases, net 7,007 3,634 Deferred financing costs, net (7,239 ) (7,975 ) 845,109 843,013 Less: current portion (11,617 ) (10,707 ) Long-term debt including leases $ 833,492 $ 832,306

Accrued Expenses and Deferred28

Accrued Expenses and Deferred Revenue (Tables)	3 Months Ended
	Mar. 31, 2017
Payables And Accruals [Abstract]
Summary of Accrued Expenses and Deferred Revenue	At March 31, 2017 and December 31, 2016, accrued expenses and deferred revenue consisted of the following: March 31, 2017 December 31, 2016 Accrued payroll and fringe benefits $ 11,549 $ 10,554 Contingent consideration 3,264 2,507 Accrued income taxes 58 421 Accrued real estate taxes 3,642 4,821 Deferred revenue 17,044 75 Other accrued expenses 9,878 7,807 Accrued expenses and deferred revenue $ 45,435 $ 26,185

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Numerator: Net loss attributable to Fairmount Santrol Holdings Inc. $ (11,588 ) $ (11,776 ) Denominator: Basic weighted average shares outstanding 223,739 161,446 Dilutive effect of employee stock options, RSUs, and PRSUs - - Diluted weighted average shares outstanding 223,739 161,446 Loss per common share - basic $ (0.05 ) $ (0.07 ) Loss per common share - diluted $ (0.05 ) $ (0.07 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016: Assets (Liabilities) Interest Rate Swap Agreements Balance Sheet Classification March 31, 2017 December 31, 2016 Designated as cash flow hedges Other long-term liabilities $ (12,629 ) $ (14,488 ) Designated as cash flow hedges Other assets - 39 $ (12,629 ) $ (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 months ended March 31, 2017 and 2016: Derivatives in Location of Gain (Loss) ASC 815-20 Cash Flow Recognized in Income on Three Months Ended March 31, Hedging Relationships Derivative (Ineffective Portion) 2017 2016 Interest rate swap agreements Interest expense (income) $ (77 ) $ 90 $ (77 ) $ 90

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value for Long-term Debt	The following table presents the fair value as of March 31, 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 March 31, 2017 Term B-2 Loans - 702,408 - 702,408 Extended Term B-1 Loans - 114,305 - 114,305 $ - $ 816,713 $ - $ 816,713 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 March 31, 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 March 31, 2017 Interest rate swap agreements $ - $ (12,629 ) $ - $ (12,629 ) $ - $ (12,629 ) $ - $ (12,629 ) 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)	3 Months Ended
	Mar. 31, 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 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 443 10.03 366 10.03 139 10.03 Exercised (125 ) 3.87 (211 ) 2.42 - - Forfeited (20 ) 10.62 (4 ) 4.08 - - Expired (9 ) 17.74 - - - - Outstanding at March 31, 2017 13,887 $ 6.57 1,610 $ 6.58 597 $ 4.09

Defined Benefit Plans (Tables)

Defined Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016 is as follows: Three Months Ended March 31, 2017 2016 Components of net periodic benefit cost Service cost $ - 22 Interest cost 89 87 Expected return on plan assets (127 ) (120 ) Amortization of prior service cost - 4 Amortization of net actuarial loss 61 70 Net periodic benefit cost $ 23 $ 63

Accumulated Other Comprehensi34

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 Gross Tax Effect Net Amount Foreign currency translation $ (10,843 ) $ 1,795 $ (9,048 ) Additional pension liability (3,528 ) 1,291 (2,237 ) Unrealized gain (loss) on interest rate hedges (11,533 ) 4,135 (7,398 ) $ (25,904 ) $ 7,221 $ (18,683 ) 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 three months ended March 31, 2017: Three Months Ended March 31, 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 (777 ) - 30 (747 ) Amounts reclassified from accumulated other comprehensive income (loss) - 61 1,005 1,066 Ending balance $ (9,048 ) $ (2,237 ) $ (7,398 ) $ (18,683 )
Reclassifications out of Accumulated Other Comprehensive Income	The following table presents the reclassifications out of accumulated other comprehensive income during the three months ended March 31, 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 $ 1,566 Interest expense Tax effect (561 ) Tax $ 1,005 Net of tax Amortization of pension obligations Prior service cost $ - Cost of sales Actuarial losses 61 Cost of sales 61 Total before tax Tax effect - Tax expense 61 Net of tax Total reclassifications for the period $ 1,066 Net of tax

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2017 2016 Revenues Proppant Solutions $ 140,993 $ 117,463 Industrial & Recreational Products 31,590 27,995 Total revenues 172,583 145,458 Segment gross profit Proppant Solutions 27,346 16,592 Industrial & Recreational Products 13,485 10,402 Total segment gross profit 40,831 26,994 Operating expenses excluded from segment gross profit Selling, general, and administrative 22,470 18,278 Depreciation, depletion, and amortization 19,442 18,586 Asset impairments - 76 Other operating expense (income) (1,060 ) 330 Interest expense, net 12,537 17,262 Other non-operating expense (income) - (5 ) Loss before benefit from income taxes $ (12,558 ) $ (27,533 )

Inventories, net - Schedule of

Inventories, net - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 8,278	$ 7,465
Work-in-process	10,717	12,681
Finished goods	43,925	33,760
Inventory gross	62,920	53,906
Less: LIFO reserve	(1,232)	(1,256)
Inventories, net	$ 61,688	$ 52,650

Property, Plant, and Equipmen37

Property, Plant, and Equipment, net - Schedule of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 1,120,498	$ 1,108,271
Accumulated depletion and depreciation	(398,037)	(380,536)
Property, plant, and equipment, net	722,461	727,735
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	79,435	86,298
Mineral Reserves and Mine Development [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	255,771	253,766
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	585,973	596,962
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	187,425	161,057
Furniture, Fixtures and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	3,431	3,440
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 8,463	$ 6,748

Property, Plant, and Equipmen38

Property, Plant, and Equipment, net - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Property Plant And Equipment Capitalized Interest Costs [Abstract]
Asset impairments	$ 0	$ 76,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 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	7,007	3,634
Long term debt	845,109	843,013
Less: current portion	(11,617)	(10,707)
Long-term debt including leases	833,492	832,306
Term B-2 Loans [Member]
Debt Instrument [Line Items]
Term Loans	717,922	719,632
Extended Term B-1 Loans [Member]
Debt Instrument [Line Items]
Term Loans	117,347	117,634
Term Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs, net	$ (7,239)	$ (7,975)

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Nov. 17, 2016	Apr. 28, 2016	Sep. 30, 2015	Mar. 31, 2017	Dec. 31, 2016	Nov. 29, 2016	Oct. 17, 2016
Debt Instrument [Line Items]
Applicable margin on interest rate				0.96%
Outstanding term loans				$ 72,000	$ 88,000
Prepayment of accrued interest		$ 227,000
Prepayment of principal amount		$ 69,580,000
Debt instrument borrowings, maturity date				Sep. 1, 2027
Outstanding letters of credit				$ 15,505,000
Industrial revenue bond outstanding				10,000,000
Letter of credit				10,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Available capacity remaining on the revolving credit facility				$ 15,745,000
Revolving Credit Facility [Member] | Borrowings [Member]
Debt Instrument [Line Items]
Interest rate of borrowings				4.30%
3/17/2017 [Member]
Debt Instrument [Line Items]
Outstanding term loans				$ 16,723,000
Debt instrument borrowings, maturity date				Mar. 17, 2017
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]
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				4.65%
2013 Pre Amendment [Member] | Revolving Credit Facility [Member] | US [Member]
Debt Instrument [Line Items]
Total Revolving Credit Facility commitment			$ 124,000,000
2013 Amended Credit Agreement [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility termination date				Sep. 6, 2018
2013 Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | US [Member]
Debt Instrument [Line Items]
Total Revolving Credit Facility commitment			99,000,000
2013 Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Canada [Member]
Debt Instrument [Line Items]
Total Revolving Credit Facility commitment			1,000,000
2013 Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Outstanding term loans			31,250,000
2013 Amended Credit Agreement [Member] | First Quarter of 2017 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total Revolving Credit Facility commitment			$ 100,000,000
2013 Amended Credit Agreement [Member] | First Quarter of 2017 [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio			650.00%
2013 Amended Credit Agreement [Member] | 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]
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				4.65%
Base Rate [Member] | Term B-1 Loans [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate				2.50%
Base Rate [Member] | Term B-2 Loans [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate				2.50%
Eurodollar [Member] | Term B-1 Loans [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate				3.50%
Eurodollar [Member] | Term B-2 Loans [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate				3.50%

Accrued Expenses and Deferred41

Accrued Expenses and Deferred Revenue - Summary of Accrued Expenses and Deferred Revenue (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables And Accruals [Abstract]
Accrued payroll and fringe benefits	$ 11,549	$ 10,554
Contingent consideration	3,264	2,507
Accrued income taxes	58	421
Accrued real estate taxes	3,642	4,821
Deferred revenue	17,044	75
Other accrued expenses	9,878	7,807
Accrued expenses and deferred revenue	$ 45,435	$ 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
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net loss attributable to Fairmount Santrol Holdings Inc.	$ (11,588)	$ (11,776)
Denominator:
Basic weighted average shares outstanding	223,739,000	161,446,000
Dilutive effect of employee stock options, RSUs, and PRSUs	0	0
Diluted weighted average shares outstanding	223,739,000	161,446,000
Loss per common share - basic	$ (0.05)	$ (0.07)
Loss per common share - diluted	$ (0.05)	$ (0.07)

Earnings (Loss) per Share - Add

Earnings (Loss) per Share - Additional Information (Detail) - shares shares in Thousands	Mar. 31, 2017	Dec. 31, 2016
Earnings Per Share Basic [Line Items]
Outstanding options	13,887	13,598
Restricted Stock Units (RSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	1,610	1,459
Performance Restricted Stock Units (PRSUs) [Member]
Earnings Per Share Basic [Line Items]
Performance restricted stock units, outstanding	597	458

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - Interest Rate Swap Agreements [Member] - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2018
Derivative [Line Items]
Notional amount of swap agreements	$ 420,000,000
Notional amount as percent of term debt outstanding	50.00%
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)		$ 6,384,000
Minimum [Member]
Derivative [Line Items]
Derivative variable interest rate	2.92%
Maximum [Member]
Derivative [Line Items]
Derivative variable interest rate	3.115%

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	Mar. 31, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Derivative, fair value	$ (12,629)	$ (14,449)
Designated as Cash Flow Hedges [Member] | Other Long-Term Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative liabilities	$ (12,629)	(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
	Mar. 31, 2017	Mar. 31, 2016
Derivatives Fair Value [Line Items]
Interest expense (income)	$ (12,537)	$ (17,262)
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)	(77)	90
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)	$ (77)	$ 90

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value for Long-term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long term debt	$ 816,713	$ 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	702,408	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	114,305	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	816,713	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	702,408	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	$ 114,305	$ 114,308

Fair Value Measurements - Finan

Fair Value Measurements - Financial Instruments Carried at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 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	$ (12,629)	$ (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)	(12,629)	(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	(12,629)	(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)	(12,629)	(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	$ (12,629)	$ (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
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted to purchase	443	1,532
Average grant date fair value of options issued	$ 10.03	$ 2.04
Stock compensation expense	$ 2,416	$ 1,653
ASU No. 2016-09 – Compensation – Stock Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reduction to retained earnings upon adoption of guidance updates to ASC 718	$ (699)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units issued	366	862
Performance Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units issued	139	407

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	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding Beginning Balance	13,598
Options, Granted	443	1,532
Options, Exercised	(125)
Options, Forfeited	(20)
Options, Expired	(9)
Options, Outstanding Ending Balance	13,887
Weighted Average Exercise Price, Options, Outstanding Beginning Balance	$ 6.45
Weighted Average Exercise Price, Options, Granted	10.03
Weighted Average Exercise Price, Options, Exercised	3.87
Weighted Average Exercise Price, Options, Forfeited	10.62
Weighted Average Exercise Price, Options, Expired	17.74
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	366
Exercised	(211)
Forfeited	(4)
Outstanding Ending Balance	1,610
Weighted Average Price at Issue Date, Outstanding Beginning Balance	$ 5.10
Weighted Average Price at Issue Date, Granted	10.03
Weighted Average Price at Issue Date, Exercised	2.42
Weighted Average Price at Issue Date, Forfeited	4.08
Weighted Average Price at Issue Date, Outstanding Ending Balance	$ 6.58
Performance Restricted Stock Units (PRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Beginning Balance	458
Granted	139
Outstanding Ending Balance	597
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, Outstanding Ending Balance	$ 4.09

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Line Items]
Benefit from income taxes	$ (1,148)	$ (15,754)
Income (Loss) before income taxes	$ (12,558)	$ (27,533)
Effective income tax rate	9.10%	57.20%
US [Member]
Income Tax Disclosure [Line Items]
Discrete tax benefits	$ 577

Defined Benefit Plans - Additio

Defined Benefit Plans - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)Pension_Plan	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit pension plans | Pension_Plan	2
Pension and postretirement contributions	$ 19	$ 25
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
	Mar. 31, 2017	Mar. 31, 2016
Compensation And Retirement Disclosure [Abstract]
Service cost		$ 22
Interest cost	$ 89	87
Expected return on plan assets	(127)	(120)
Amortization of prior service cost		4
Amortization of net actuarial loss	61	70
Net periodic benefit cost	$ 23	$ 63

Accumulated Other Comprehensi54

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	$ (25,904)	$ (27,539)
Accumulated other comprehensive income (loss), Tax Effect	7,221	8,537
Accumulated other comprehensive income (loss)	(18,683)	(19,002)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(10,843)	(10,804)
Accumulated other comprehensive income (loss), Tax Effect	1,795	2,533
Accumulated other comprehensive income (loss)	(9,048)	(8,271)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(3,528)	(3,589)
Accumulated other comprehensive income (loss), Tax Effect	1,291	1,291
Accumulated other comprehensive income (loss)	(2,237)	(2,298)
Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Gross	(11,533)	(13,146)
Accumulated other comprehensive income (loss), Tax Effect	4,135	4,713
Accumulated other comprehensive income (loss)	$ (7,398)	$ (8,433)

Accumulated Other Comprehensi55

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income by Component (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (19,002)
Other comprehensive income (loss) before reclassifications	(747)
Amounts reclassified from accumulated other comprehensive income (loss)	1,066
Ending balance	(18,683)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(8,271)
Other comprehensive income (loss) before reclassifications	(777)
Ending balance	(9,048)
Additional Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,298)
Amounts reclassified from accumulated other comprehensive income (loss)	61
Ending balance	(2,237)
Unrealized Gain (Loss) on Interest Rate Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(8,433)
Other comprehensive income (loss) before reclassifications	30
Amounts reclassified from accumulated other comprehensive income (loss)	1,005
Ending balance	$ (7,398)

Accumulated Other Comprehensi56

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 12,537	$ 17,262
Loss before benefit from income taxes	(12,558)	(27,533)
Tax expense (benefit)	(1,148)	(15,754)
Net loss	(11,410)	(11,779)
Cost of sales	131,752	$ 118,464
Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net loss	1,066
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	1,566
Tax expense (benefit)	(561)
Net loss	1,005
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	61
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Additional Pension Liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss before benefit from income taxes	61
Net loss	$ 61

Commitments and Contingent Li57

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 17, 2015	Mar. 31, 2017	Mar. 31, 2016
Commitments and Contingencies [Line Items]
Rent expense for lease		$ 13,714	$ 17,803
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		$ 757

Transactions with Related Par58

Transactions with Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Purchases from an affiliated entity	$ 57	$ 263
American Securities [Member]
Related Party Transaction [Line Items]
Management fees and expense payment	$ 86	$ 104

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)Segment	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
Total Assets	$ 1,235,284	$ 1,202,910
Proppant Solutions [Member]
Segment Reporting Information [Line Items]
Total Assets	513,409	477,777
Industrial & Recreational Products [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 61,213	$ 57,029

Segment Reporting - Summarized

Segment Reporting - Summarized Financial Information for Reportable Segments (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Revenues	$ 172,583,000	$ 145,458,000
Segment gross profit
Segment gross profit	40,831,000	26,994,000
Operating expenses excluded from segment gross profit
Selling, general, and administrative	22,470,000	18,278,000
Depreciation, depletion, and amortization	19,442,000	18,586,000
Asset impairments	0	76,000
Other operating expense (income)	(1,060,000)	330,000
Interest expense, net	12,537,000	17,262,000
Other non-operating expense (income)		(5,000)
Income (Loss) before income taxes	(12,558,000)	(27,533,000)
Proppant Solutions [Member]
Revenues
Revenues	140,993,000	117,463,000
Segment gross profit
Segment gross profit	27,346,000	16,592,000
Industrial & Recreational Products [Member]
Revenues
Revenues	31,590,000	27,995,000
Segment gross profit
Segment gross profit	$ 13,485,000	$ 10,402,000

Definite and Indefinite-Lived61

Definite and Indefinite-Lived Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 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	$ 34,053
SSP Technology [Member]
Goodwill [Line Items]
Useful life of intangible asset	20 years
Amortization expense of intangible asset	$ 761