ProPetro Holding (PUMP) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

DOCUMENT AND ENTITY INFORMATION

DOCUMENT AND ENTITY INFORMATION - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	ProPetro Holding Corp.
Entity Central Index Key	1,680,247
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		83,039,854

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 51,008	$ 133,596
Accounts receivable - net of allowance for doubtful accounts of $335 and $552, respectively	160,047	115,179
Inventories	9,148	4,713
Prepaid expenses	5,543	4,608
Other current assets	975	6,684
Total current assets	226,721	264,780
PROPERTY AND EQUIPMENT - Net of accumulated depreciation	399,268	263,862
OTHER NONCURRENT ASSETS:
Goodwill	9,425	9,425
Intangible assets - net of amortization	373	589
Deferred revenue rebate - net of amortization	1,077	2,462
Other noncurrent assets	1,727	304
Total other noncurrent assets	12,602	12,780
TOTAL ASSETS	638,591	541,422
CURRENT LIABILITIES:
Accounts payable	181,660	129,093
Accrued liabilities	11,074	13,619
Current portion of long-term debt	7,441	16,920
Accrued interest payable	86	109
Total current liabilities	200,261	159,741
DEFERRED INCOME TAXES	1,315	1,148
LONG-TERM DEBT	34,476	159,407
OTHER LONG-TERM LIABILITIES	124	117
Total liabilities	236,176	320,413
COMMITMENTS AND CONTINGENCIES (Note 9)
SHAREHOLDERS’ EQUITY:
Preferred stock, $0.001 par value, 30,000,000 shares authorized, 0 and 16,999,990 shares issued, respectively	0	17
Preferred stock, additional paid-in capital	0	162,494
Common stock, $0.001 par value, 200,000,000 shares authorized, 83,039,854 and 52,627,652 shares issued, respectively	83	53
Additional paid-in capital	606,707	265,355
Accumulated deficit	(204,375)	(206,910)
Total shareholders’ equity	402,415	221,009
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 638,591	$ 541,422

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 335	$ 552
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	30,000,000	30,000,000
Preferred stock, issued (in shares)	0	16,999,990
Preferred stock, outstanding (in shares)	0	16,999,990
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, issued (in shares)	83,039,854	52,627,652
Common stock, outstanding (in shares)	83,039,854	52,627,652

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
REVENUE - Service revenue	$ 282,730	$ 116,904	$ 668,153	$ 272,999
COSTS AND EXPENSES
Cost of services (exclusive of depreciation and amortization)	225,433	110,223	551,775	255,362
General and administrative (inclusive of stock-based compensation)	11,106	5,856	38,881	17,197
Depreciation and amortization	14,745	10,790	38,602	32,669
Loss on disposal of assets	8,742	5,923	28,971	12,859
Total costs and expenses	260,026	132,792	658,229	318,087
OPERATING INCOME (LOSS)	22,704	(15,888)	9,924	(45,088)
OTHER INCOME (EXPENSE):
Interest expense	(644)	(4,550)	(6,469)	(15,942)
Gain on extinguishment of debt	0	0	0	6,975
Other expense	(191)	(106)	(792)	(419)
Total other income (expense)	(835)	(4,656)	(7,261)	(9,386)
INCOME (LOSS) BEFORE INCOME TAXES	21,869	(20,544)	2,663	(54,474)
INCOME TAX (EXPENSE)/BENEFIT	96	6,946	(128)	18,644
NET INCOME (LOSS)	$ 21,965	$ (13,598)	$ 2,535	$ (35,830)
NET INCOME (LOSS) PER COMMON SHARE:
Basic (in dollars per share)	$ 0.26	$ (0.26)	$ 0.03	$ (0.84)
Diluted (in dollars per share)	$ 0.25	$ (0.26)	$ 0.03	$ (0.84)
Denominator
Basic (in shares)	83,040	52,975	74,124	42,526
Diluted (in shares)	86,264	52,975	77,118	42,526

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Preferred Stock	Preferred Additional Paid-In Capital	Common Stock	Additional Paid-In Capital	Accumulated Deficit
BALANCE at Dec. 31, 2016	$ 221,009	$ 17	$ 162,494	$ 53	$ 265,355	$ (206,910)
Balance (in shares) at Dec. 31, 2016		17,000,000		52,628,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	8,730				8,730
Initial Public Offering net of costs (in shares)				13,250,000
Initial Public Offering net of costs	170,141			$ 13	170,128
Conversion of preferred equity to common at IPO (in shares)		(17,000,000)		17,000,000
Conversion of preferred stock to common at Initial Public Offering	$ 0	$ (17)	(162,494)	$ 17	162,494
Exercise of stock options—net (in shares)	226,194			162,000
Exercise of stock options—net	$ 0			$ 0	0
Net income	2,535					2,535
Balance (in shares) at Sep. 30, 2017		0		83,040,000
BALANCE at Sep. 30, 2017	$ 402,415	$ 0	$ 0	$ 83	$ 606,707	$ (204,375)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 2,535	$ (35,830)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	38,602	32,669
Gain on extinguishment	0	(6,975)
Deferred income tax expense (benefit)	166	(18,644)
Amortization of deferred revenue rebate	1,385	1,385
Amortization of deferred debt issuance costs	3,322	1,806
Stock-based compensation	8,730	1,130
Loss on disposal of assets	28,971	12,859
Gain on interest rate swap	(226)	(54)
Changes in operating assets and liabilities:
Accounts receivable	(44,868)	3,255
Other current assets	3,271	(4)
Inventories	(4,435)	1,579
Prepaid expenses	(910)	2,845
Accounts payable	41,564	(2,294)
Accrued liabilities	589	620
Accrued interest	(23)	1
Net cash provided by (used in) operating activities	78,673	(5,652)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(193,820)	(18,631)
Proceeds from sale of assets	4,237	475
Net cash used in investing activities	(189,583)	(18,156)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from borrowings	27,112	0
Repayments of borrowings	(164,638)	(42,166)
Repayments of insurance financing	(2,900)	(2,833)
Debt extinguishment cost	0	(525)
Payment of debt issuance costs	(1,653)	(115)
Equity capitalization	0	40,425
Proceeds from IPO	185,500	0
Payment of IPO costs	(15,099)	0
Net cash provided by (used in) financing activities	28,322	(5,214)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(82,588)	(29,022)
CASH AND CASH EQUIVALENTS - Beginning of period	133,596	34,310
CASH AND CASH EQUIVALENTS - End of period	$ 51,008	$ 5,288

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements of ProPetro Holding Corp. and its subsidiary (the "Company," "we," "us" or "our") have been prepared in accordance with the requirements of the U.S. Securities and Exchange Commission ("SEC") for interim financial information and do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America ("GAAP") for annual financial statements. Those adjustments (which consisted of normal recurring accruals) that are, in the opinion of management, necessary for a fair presentation of the results of the interim periods have been made. Results of operations for such interim periods are not necessarily indicative of the results of operations for a full year due to changes in market conditions and other factors. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2016 included in the final prospectus of the Company filed with the SEC pursuant to rule 424(b) under the Securities Act of 1933 on March 20, 2017 ("Prospectus"). Initial Public Offering On March 22, 2017, we consummated our initial public offering ("IPO"), in which 25,000,000 shares of our common stock, par value $0.001 per share, were sold at a public offering price of $14.00 per share, with 13,250,000 shares issued and sold by the Company and 11,750,000 shares sold by existing stockholders. We received net proceeds of approximately $170.1 million after deducting $10.9 million of underwriting discounts and commissions, and $4.5 million of other offering expenses. Upon closing of the IPO, we used the proceeds (i) to repay $71.8 million in outstanding borrowings under our Term Loan (as defined in Note 4), (ii) to fund the purchase of additional hydraulic fracturing fleets and ancillary equipment, and (iii) for general corporate purposes. In connection with the IPO, the Company executed a stock split, such that each holder of common stock of the Company received 1.45 shares of common stock for every one share of previous common stock. Accordingly, any information related to, or dependent upon, the share or option counts in our comparative 2016 condensed consolidated financial statements (Unaudited) and Note 6, Net Income (Loss) per Share , Note 7, Stock-Based Compensation , and Note 10, Equity Capitalization , have been updated to reflect the effect of the stock split.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606) . ASU No. 2014-09 requires entities to recognize revenue to depict transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU No. 2014-09 requires entities to disclose both qualitative and quantitative information that enables users of the consolidated financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including disclosure of significant judgments affecting the recognition of revenue. ASU No. 2014-09 was originally effective for annual periods beginning after December 15, 2016, using either the retrospective or cumulative effect transition method. On August 12, 2015, the FASB issued ASU No. 2015-14, which defers the effective date of the revenue standard, ASU No. 2014-09, by one year for all entities and permits early adoption on a limited basis. We have completed our preliminary evaluation of ASU No. 2014-09, and the adoption of this guidance will not materially affect our revenue recognition. However, there will be additional disclosures on our consolidated financial statements relating to the adoption of this standard. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory, which requires entities to measure most inventory "at the lower of cost and net realizable value," thereby simplifying the current guidance under which an entity must measure inventory at the lower of cost or market. ASU No. 2015-11 does not apply to inventories that are measured by using either the last-in, first-out method or the retail inventory method. The amendments in ASU No. 2015-11 are effective for fiscal years beginning after December 15, 2016. The ASU became effective for us in 2017 and the adoption of this guidance did not materially affect our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases , a new standard on accounting for leases. The ASU introduces a lessee model that brings most leases on the balance sheet. The new standard also aligns many of the underlying principles of the new lessor model with those in the current accounting guidance as well as the FASB’s new revenue recognition standard. However, the ASU eliminates the use of bright-line tests in determining lease classification as required in the current guidance. The ASU also requires additional qualitative disclosures along with specific quantitative disclosures to better enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The new standard is effective for annual reporting periods beginning after December 15, 2018, including periods within that reporting period, using a modified retrospective approach. Early adoption is permitted. We have not completed an evaluation of the impact the pronouncement will have on our consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-09, Compensation- Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which modifies several aspects of the accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The new standard is effective for fiscal years and interim periods beginning after December 15, 2016, with early adoption permitted. The ASU became effective for us in 2017 and the adoption of this guidance did not materially affect our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment , which removes the requirement to compare the implied fair value of goodwill with its carrying amount as part of step two of the goodwill impairment test. As a result, under this ASU, an entity would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. This pronouncement is effective for impairment tests in fiscal years beginning after December 15, 2019, on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We believe that the adoption of this guidance will not materially affect our consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the "exit price") in an orderly transaction between market participants at the measurement date. In determining fair value, the Company uses various valuation approaches and establishes a hierarchy for inputs used in measuring fair value that maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used, when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the assumptions other market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the observability of inputs as follows: Level 1 — Valuations based on quoted prices in active markets for identical assets or liabilities that the Company has the ability to access. Valuation adjustments and block discounts are not applied to Level 1 instruments. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Level 2 — Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3 — Valuations based on inputs that are unobservable and significant to the overall fair value measurement. 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 Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Assets and Liabilities Measured at Fair Value on a Recurring Basis Our financial instruments include cash and cash equivalents, accounts receivable, accounts payable, and a derivative financial instrument. The estimated fair value of our financial instruments — cash and cash equivalents, accounts receivable and accounts payable at September 30, 2017 and December 31, 2016 approximates their carrying value as reflected in our condensed consolidated balance sheets due to their short-term nature. We use a derivative financial instrument, an interest rate swap, to manage interest rate risk. Our policies do not permit the use of derivative financial instruments for speculative purposes. We did not designate the interest rate swap as a hedge for accounting purposes. We record all derivatives as of the end of our reporting period in our condensed consolidated balance sheet at fair value, which is based on quoted market prices, a Level 1 input. We may be exposed to credit losses in the event of nonperformance by counterparties to the interest rate swap. The counterparty of the interest rate swap is a credible, large institution, and we do not believe there is significant or material credit risk upon settlement of the contract. The fair value of the interest rate swap liability at September 30, 2017 and December 31, 2016 was $0.03 million and $0.3 million , respectively. Based on quoted market prices as of September 30, 2017 and 2016 , for contracts with similar terms and maturity date, as provided by the counterparty, we recorded a gain of $0.2 million and $0.1 million during the nine months ended September 30, 2017 and 2016 , respectively. Assets Measured at Fair Value on a Nonrecurring Basis Assets measured at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016 , respectively, are set forth below: Estimated fair value measurements Balance Quoted prices in active market (Level 1) Significant other observable inputs (Level 2) Significant other unobservable inputs (Level 3) Total gains (losses) ($ in thousands) September 30, 2017: Property and equipment, net $ — $ — $ — $ — $ — Goodwill $ — $ — $ — $ — $ — December 31, 2016: Property and equipment, $ 8,700 $ — $ 8,700 $ — $ (6,305 ) Goodwill $ 9,425 $ — $ — $ 9,425 $ (1,177 ) No impairment of property and equipment was recorded during the nine months ended September 30, 2017 and 2016 . During the fourth quarter of 2016 , the depressed cash flows and continued decline in utilization of our Permian drilling assets were indicative of potential impairment, resulting in the Company comparing the carrying value of the Permian drilling assets with its estimated fair value. We determined that the carrying value of the Permian drilling assets was greater than its estimated fair value, and as such, an impairment expense was recorded in the fourth quarter of 2016 . The non-cash asset impairment charges recorded in the fourth quarter of 2016 for Permian drilling was $6.3 million , which had a then net carrying value of $15.0 million prior to the impairment write-down. We generally apply fair value techniques to our reporting units on a nonrecurring basis associated with valuing potential impairment loss related to goodwill. Our estimate of the reporting unit fair value is based on a combination of income and market approaches, Level 1 and 3, respectively, in the fair value hierarchy. The income approach involves the use of a discounted cash flow method, with the cash flow projections discounted at an appropriate discount rate. The market approach involves the use of comparable public companies market multiples in estimating the fair value. Significant assumptions include projected revenue growth, capital expenditures, utilization, gross margins, discount rates, terminal growth rates, and weight allocation between income and market approaches. If the reporting unit's carrying amount exceeds its fair value, we consider goodwill impaired, and the impairment loss is calculated and recorded. There were no additions to, or disposal of, goodwill during the nine months ended September 30, 2017 and 2016 . At December 31, 2016 , we estimated the fair value of the surface drilling reporting unit to be $3.8 million and its carrying value was $4.2 million . As a result of the potential impairment due to the carrying value exceeding the estimated fair value, we then further determined the implied fair value of the $1.2 million goodwill for the surface drilling reporting unit to be $0 . Accordingly, we recorded an impairment loss of $1.2 million during the fourth quarter of 2016.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt 2013 Term Loan and Revolving Credit Facility On September 30, 2013, we entered into a term loan in the amount of $220 million ("Term Loan") with a $40 million revolving credit line ("Revolving Credit Facility" ) . Borrowings under the Term Loan and Revolving Credit Facility accrued interest at LIBOR plus 6.25% , subject to a 1% LIBOR floor, and were secured by a first priority lien and security interest in all assets of the Company. Proceeds from the Term Loan were used to pay off 100% of our debt outstanding, including accrued interest, at September 30, 2013, with excess proceeds from the Term Loan and the Revolving Credit Facility used to fund growth and working capital needs. The Term Loan and Revolving Credit Facility were scheduled to mature on September 30, 2019 and September 30, 2018, respectively, with quarterly and monthly payments of principal and interest, respectively. Under the Term Loan and Revolving Credit Facility we were required to comply, subject to certain exceptions and materiality qualifiers, with certain customary affirmative and negative covenants, including, but not limited to, covenants pertaining to reporting, insurance, collateral maintenance, change of control, transactions with affiliates, distributions, and limitations on additional indebtedness. In addition, the Term Loan and Revolving Credit Facility included a maximum leverage ratio of 3.5 x EBITDA (earnings before interest, taxes, depreciation, and amortization) to total debt, which became effective March 31, 2014. In 2015, given the then near-term economic uncertainty and volatility of commodity prices, we determined that we were likely to be out of compliance with the leverage ratio covenant under the Term Loan and Revolving Credit Facility at the March 31, 2016 test date. Accordingly, the Company and its equity sponsor, Energy Capital Partners ("ECP"), commenced negotiations with the lenders to amend the covenants and leverage ratio in the Term Loan and Revolving Credit Facility. The resulting amendment and waiver agreement was executed on June 8, 2016. Under the terms of the amendment, ECP infused $40 million of additional equity into the Company, $10 million of which was reserved for working capital, with up to $30 million available to repurchase debt. A minority shareholder also infused $0.425 million alongside ECP to prevent dilution. The amendment and waiver also suspended the leverage ratio test until June 30, 2017, and provided us with 30 days to deliver any past-due financial statements. Gain on Extinguishment of Debt — in connection with the amendment to the Term Loan and Revolving Credit Facility, we initiated an auction process with the lenders to repurchase a portion of debt for a price of 80 cents , a 20% discount to par value. The auction settled on June 16, 2016 as the Company repurchased a total amount of $37.5 million of debt for $30 million plus $0.5 million in debt extinguishment auction costs, leading to a gain on extinguishment of debt of $7.0 million . On January 13, 2017, we repaid $75 million of the outstanding balance under the Term Loan and repaid the remaining balance of $13.5 million under the Revolving Credit Facility using a portion of the proceeds from the private placement offering. On March 22, 2017, we retired the $71.8 million remaining balance of the Term Loan, along with accrued interest, using a portion of the proceeds from our IPO. Each of the Term Loan and Revolving Credit Facility were terminated in accordance with their terms upon the repayment of outstanding borrowings. Equipment and Manufacturing Notes On November 24, 2015, we entered into a 36 -month financing arrangement for three hydraulic fracturing fleets in the amount of $25 million , and a portion of the proceeds were used to pay off the previous manufacturer notes, with the remainder being used for additional liquidity. On June 30, 2017, we entered into a financing arrangement for the purchase of light vehicles. As of September 30, 2017 , we purchased certain light vehicles under this financing arrangement in the amount of $2.1 million . ABL Credit Facility On March 22, 2017, we entered into a new revolving credit facility with a $150 million borrowing capacity ("ABL Credit Facility"). Borrowings under the ABL Credit Facility accrue interest based on a three-tier pricing grid tied to availability, and we may elect for loans to be based on either LIBOR or base rate, plus the applicable margin, which ranges from 1.75% to 2.25% for LIBOR loans and 0.75% to 1.25% for base rate loans, with no LIBOR floor. Borrowings under the ABL Credit Facility are secured by a first priority lien and security interest in substantially all assets of the Company. The ABL Credit Facility has a tenor of 5 years and a borrowing base of 85% of eligible accounts receivable less customary reserves. Under this facility we are required to comply, subject to certain exceptions and materiality qualifiers, with certain customary affirmative and negative covenants, including, but not limited to, covenants pertaining to our ability to incur liens, indebtedness, changes in the nature of our business, mergers and other fundamental changes, disposal of assets, investments and restricted payments, amendments to our organizational documents or accounting policies, prepayments of certain debt, dividends, transactions with affiliates, and certain other activities. In addition, the ABL Credit Facility includes a Springing Fixed Charge Coverage Ratio of 1.0 x when excess availability is less than the greater of (i) 10% of the lesser of the facility size and the Borrowing Base and (ii) $12 million . The ABL has a commitment fee of 0.375% , which reduces to 0.25% if utilization is greater than 50% of the borrowing base. Total debt consisted of the following at September 30, 2017 and December 31, 2016 , respectively: ($ in thousands) 2017 2016 ABL Credit Facility $ 25,000 $ — 6.25% "Term loan" due September 2019 — 146,750 Revolving Credit Facility — 13,500 Equipment financing 16,917 19,193 Total debt 41,917 179,443 Less deferred loan costs, net of amortization — 3,116 Subtotal 41,917 176,327 Less current portion of long-term debt 7,441 16,920 Total long-term debt, net of deferred loan costs $ 34,476 $ 159,407 The loan origination costs relating to the ABL Credit Facility are classified as an asset in the balance sheet. Annual Maturities — Scheduled remaining annual maturities of total debt are as follows at September 30, 2017 : ($ in thousands) 2017 $ 1,778 2018 14,298 2019 805 2020 36 2021 and thereafter 25,000 Total $ 41,917

Reportable Segment Information

Reportable Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Reportable Segment Information	Reportable Segment Information The Company has seven operating segments for which discreet financial information is readily available: hydraulic fracturing, cementing, acidizing, coil tubing, flowback, surface drilling, and Permian drilling. These segments represent how the Chief Operating Decision Maker (CODM) evaluates performance and allocates resources. In accordance with Accounting Standards Codification (ASC) 280— Segment Reporting , the Company has one reportable segment (pressure pumping) comprised of the hydraulic fracturing, cementing, and acidizing operating segments. All other operating segments and corporate administrative expenses are included in the ‘‘all other’’category in the table below. Inter-segment revenues are not material and are not shown separately in the table below. The Company manages and assesses the performance of the reportable segment by its adjusted EBITDA (earnings before other income (expense), interest, taxes, depreciation & amortization, stock-based compensation expense, impairment expense, (gain)/loss on disposal of assets, gain on extinguishment of debt and other unusual or nonrecurring expenses or income). A reconciliation from segment level financial information to the consolidated statement of operations is provided in the table below. Three months ended September 30, 2017 Nine months ended September 30, 2017 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Service revenue $ 271,924 $ 10,806 $ 282,730 $ 639,355 $ 28,798 $ 668,153 Adjusted EBITDA $ 50,013 $ (2,245 ) $ 47,768 $ 98,296 $ (3,641 ) $ 94,655 Depreciation and amortization $ 13,637 $ 1,108 $ 14,745 $ 35,228 $ 3,374 $ 38,602 Goodwill $ 9,425 $ — $ 9,425 $ 9,425 $ — $ 9,425 Capital expenditures $ 61,752 $ 765 $ 62,517 $ 203,097 $ 3,231 $ 206,328 Total assets $ 604,769 $ 33,822 $ 638,591 $ 604,769 $ 33,822 $ 638,591 Three months ended September 30, 2016 Nine months ended September 30, 2016 Pressure Pumping All Other Total Pressure Pumping All Other Total Service revenue $ 109,697 $ 7,207 $ 116,904 $ 251,410 $ 21,589 $ 272,999 Adjusted EBITDA $ 2,951 $ (1,616 ) $ 1,335 $ 6,500 $ (4,930 ) $ 1,570 Depreciation and amortization $ 9,274 $ 1,516 $ 10,790 $ 27,905 $ 4,764 $ 32,669 Goodwill $ 9,425 $ 1,177 $ 10,602 $ 9,425 $ 1,177 $ 10,602 Capital expenditures $ 11,641 $ 202 $ 11,843 $ 21,582 $ 312 $ 21,894 Total assets at December 31, 2016 $ 501,906 $ 39,516 $ 541,422 $ 501,906 $ 39,516 $ 541,422 Reconciliation of net income (loss) to adjusted EBITDA: Three months ended September 30, 2017 Nine months ended September 30, 2017 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Net income (loss) $ 28,372 $ (6,407 ) $ 21,965 $ 30,087 $ (27,552 ) $ 2,535 Depreciation and amortization 13,637 1,108 14,745 35,228 3,374 38,602 Interest expense — 644 644 — 6,469 6,469 Income tax (benefit) expense — (96 ) (96 ) — 128 128 Loss on disposal of assets 7,552 1,190 8,742 27,943 1,028 28,971 Stock-based compensation — 751 751 — 8,730 8,730 Other expense — 191 191 — 792 792 Other general and administrative expense (1) — 149 149 — 722 722 Deferred IPO bonus expense 452 225 677 5,038 2,668 7,706 Adjusted EBITDA $ 50,013 $ (2,245 ) $ 47,768 $ 98,296 $ (3,641 ) $ 94,655 Three months ended September 30, 2016 Nine months ended September 30, 2016 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Net loss $ (12,265 ) $ (1,333 ) $ (13,598 ) $ (34,815 ) $ (1,015 ) $ (35,830 ) Depreciation and amortization 9,274 1,516 10,790 27,905 4,764 32,669 Interest expense — 4,550 4,550 — 15,942 15,942 Income tax benefit — (6,946 ) (6,946 ) — (18,644 ) (18,644 ) (Gain)/loss on disposal of assets 5,942 (19 ) 5,923 13,410 (551 ) 12,859 Stock-based compensation — 510 510 — 1,130 1,130 Gain on extinguishment of debt — — — — (6,975 ) (6,975 ) Other expense — 106 106 — 419 419 Adjusted EBITDA $ 2,951 $ (1,616 ) $ 1,335 $ 6,500 $ (4,930 ) $ 1,570 (1) Other general and administrative expense relates to legal settlement expense.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share Net income (loss) per share is determined by dividing the net income (loss) relevant to the common stockholders by the weighted average number of shares outstanding during the period. Diluted net income (loss) per common share uses the same net income (loss) divided by the number of shares that would be outstanding assuming dilutive options and stock are converted. The table below shows the calculations for the three and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except for per share data) 2017 2016 2017 2016 Numerator (both basic and diluted) Net income (loss) relevant to common stockholders $ 21,965 $ (13,598 ) $ 2,535 $ (35,830 ) Denominator Denominator for basic income (loss) per share 83,040 52,975 74,124 42,526 Dilutive effect of stock options 2,808 — 2,822 — Dilutive effect of performance stock units 37 — — — Dilutive effect of non-vested restricted stock 379 — 172 — Denominator for diluted income (loss) per share 86,264 52,975 77,118 42,526 Basic income (loss) per common share $ 0.26 $ (0.26 ) $ 0.03 $ (0.84 ) Diluted income (loss) per common share $ 0.25 $ (0.26 ) $ 0.03 $ (0.84 ) As shown in the table below, the following non-vested restricted stock, performance stock units, and stock options have not been included in the calculation of diluted income (loss) per share as they would be anti-dilutive to the calculation above. (In thousands) Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Stock options 789 4,646 789 4,646 Performance stock units — — 170 — Non-vested restricted stock — 372 318 372 789 5,018 1,277 5,018

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Stock Options Effective March 4, 2013, we adopted the ProPetro Stock Option Plan pursuant to which our Board of Directors may grant stock options or other stock-based awards to key employees, consultants, and directors. The Plan, as amended, is authorized to grant up to 4,645,884 shares of common stock to be issued upon exercise of the options. The Company’s share price used to estimate the fair value of the option at the grant date was based on a combination of income and market approaches, which are highly complex and sensitive. The income approach involves the use of a discounted cash flow method, with cash flow projections discounted at an appropriate discount rate. The market approach involves the use of comparable public companies market multiples in estimating the fair value of the Company’s stock. The expected term used to calculate the fair value of all options considers the vesting date and the grant’s expiration date. The expected volatility was estimated by considering comparable public companies, and the risk free rate is based on the U.S treasury yield curve as of the grant date. The dividend assumption is based on historical experience. After becoming a public company, the market price was used to determine the market value of our common stock. Prior to 2015, we had granted a total of 3,499,228 options with an exercise price of $3.96 per option, and all options expire 10 years from the date of grant. On June 14, 2013, we granted 2,799,408 stock option awards to certain key employees and directors that shall vest and become exercisable based upon the achievement of a service requirement. The options vest in 25% increments for each year of continuous service and an option becomes fully vested upon the optionee’s completion of the fourth year of service. The contractual term for the options awarded is 10 years. For the nine months ended September 30, 2017 and 2016 , we recognized $0.7 million and $0.9 million , respectively, in compensation expense related to these stock options. The fair value of each option award granted is estimated on the date of grant using the Black-Scholes option-pricing model. The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 45 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 1.35 % On December 1, 2013, we granted 699,820 stock option awards to certain key employees which were scheduled to vest in four substantially equal annual installments, subject to service and performance requirements and acceleration upon a change in control. As of September 30, 2016 , the performance requirement was not considered to be probable of achievement for any of the outstanding option awards and 114,456 options were forfeited during the year ended December 31, 2016 . Accordingly, we have not recognized any compensation expense related to these stock options as of September 30, 2016 . Effective March 16, 2017, we terminated the options in connection with the IPO and approved a cash bonus totaling $5.1 million to the holders of the options. The contractual term for the options awarded is 10 years. The fair value of each option award granted is estimated on the date of grant using the Black-Scholes option-pricing model. The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 45 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 1.83 % On July 19, 2016, we granted 1,274,549 stock option awards to certain key employees and directors which are scheduled to vest in five substantially equal semi-annual installments commencing in December 2016, subject to a continuing services requirement. The contractual term for the options awarded is 10 years. For the nine months ended September 30, 2017 , we recognized the remaining $1.8 million in stock compensation expense related to these stock options, as the Company fully accelerated vesting of the options in connection with the IPO, and for the nine months ended September 30, 2016 , we recognized $0.2 million in stock compensation expense related to these stock options. The fair value of each option award granted is estimated on the date of grant using the Black- Scholes option-pricing model. The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 55 % Expected dividends $ — Expected term (in years) 5.8 Risk free rate 1.22 % In March 2017, our shareholders approved the ProPetro 2017 Incentive Award Plan ("IAP") pursuant to which our Board of Directors may grant stock options, restricted stock units ("RSUs"), performance stock units ("PSUs"), or other stock-based awards to key employees, consultants, directors and employees. The IAP authorizes up to 5,800,000 shares of common stock to be issued under awards granted pursuant to the plan. On March 16, 2017, we granted 793,738 stock option awards to certain key employees and directors pursuant to the IAP which are scheduled to vest in four substantially equal annual installments, subject to a continuing service requirement. The contractual term for the options awarded is 10 years. For the nine months ended September 30, 2017 and 2016 , we recognized $0.4 million and $0 , in stock compensation expense related to these stock option awards. The fair value of each stock option award granted is estimated on the date of grant using the Black- Scholes option-pricing model. The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 18 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 2.23 % A summary of the stock option activity for the nine months ended September 30, 2017 and the year ended December 31, 2016 , is presented below. Number Weighted Weighted Outstanding at January 1, 2016 3,485,791 $ 3.96 $ 1.77 Granted 1,274,549 $ 2.25 $ 1.77 Exercised — $ — $ — Forfeited (114,456 ) $ 3.96 $ 1.77 Expired — $ — $ — Canceled — $ — $ — Outstanding at December 31, 2016 4,645,884 $ 3.49 $ 1.77 Exercisable at December 31, 2016 2,354,466 $ 3.77 $ 1.77 Outstanding at January 1, 2017 4,645,884 $ 3.49 $ 1.77 Granted 793,738 $ 14.00 $ 3.35 Exercised (226,194 ) $ 3.96 $ 1.77 Forfeited (5,148 ) $ 14.00 $ 3.35 Expired — $ — $ — Canceled (571,927 ) $ 3.96 $ 1.77 Outstanding at September 30, 2017 4,636,353 $ 5.20 $ 2.04 Exercisable at September 30, 2017 3,847,763 $ 3.39 $ 1.77 Restricted Stock Units (Non-Vested Stock) and Performance Stock Units On September 30, 2013, our Board of Directors authorized and granted 372,335 restricted stock units (RSUs) to a key executive. Each RSU represents the right to receive one share of common stock of the Company at par value $0.001 per share. Under the terms of the award, the shares of common stock subject to the RSUs were to be paid to the grantee upon change in control, regardless of whether the grantee was affiliated with the Company on the settlement date. The fair value of the RSUs is measured as the price of the Company’s shares on the grant date, which was estimated to be $3.89 . The share price used to estimate the fair value of the RSU at the grant date was based on a combination of income and market approaches, which are highly complex and sensitive. The income approach involves the use of a discounted cash flow method, with the cash flow projections discounted at an appropriate discount rate. The market approach involves the use of comparable public companies market multiples in estimating the fair value of the Company’s stock. Effective March 22, 2017, the Board of Directors canceled these RSUs and issued 372,335 new RSUs to the grantee. These issued RSUs are effectively identical to the RSUs granted in 2013, provided, however, that the RSUs will now be payable in full on March 22, 2018. The fair value of the RSUs issued on March 22, 2017, was based on the Company's stock market price at the grant date. In connection with the IPO, we fully recognized the stock compensation expense related to the re-issued RSUs. On June 5, 2017, our Board of Directors granted 319,250 RSUs to employees, directors and executives pursuant to the IAP. Each RSU represents the right to receive one share of common stock. The fair value of the RSUs is based on the closing share price of our common stock on the date of grant. During the nine months ended September 30, 2017 and 2016 , the recorded stock compensation expense for all RSUs was $5.8 million and $0 , respectively. The following table summarizes RSUs activity during the nine months ended September 30, 2017 : Number of Weighted Outstanding at January 1, 2017 372,335 $ 3.89 Granted 691,585 $ 13.65 Vested — $ — Exercised — $ — Forfeited (1,170 ) $ 13.65 Expired — $ — Canceled (372,335 ) $ 3.89 Outstanding at September 30, 2017 690,415 $ 13.65 Effective June 5, 2017, our Board of Directors authorized and granted performance stock unit awards to certain key employees under the IAP. The actual number of shares that may be issued under the performance stock unit awards ranges from zero up to a maximum of twice the target number of performance stock unit awards granted to the participant, based on our total shareholder return relative to a designated peer group from the date of our IPO through December 31, 2019. Compensation expense is recorded ratably over the corresponding requisite service period. The fair value of performance stock unit awards is determined using a Monte Carlo probability model. Grant recipients do not have any shareholder rights until performance relative to the peer group has been determined following the completion of the performance period and shares have been issued. During the nine months ended September 30, 2017 and 2016 the recorded stock compensation expense for the performance stock units was $0.2 million and $0 , respectively. The following table summarizes information about the performance stock units that were outstanding at September 30, 2017 : Period Target Shares Target Target Shares Vested Target Target Shares Weighted 2017 — 169,635 — — 169,635 $ 10.73 Total — 169,635 — — 169,635 The total stock compensation expense for the nine months ended September 30, 2017 and 2016 for all stock awards was $8.7 million and $1.1 million , respectively. The total unrecognized compensation expense as of September 30, 2017 is approximately $7.5 million , and is expected to be recognized over a weighted-average period of approximately 2.9 years.

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions The Company leases its corporate offices from a related party pursuant to a five -year lease agreement with a five -year extension option requiring a base rent of $0.07 million per year. The Company also leases five properties adjacent to the corporate office from related parties with annual base rents of $0.03 million , $0.03 million , $0.09 million , $0.09 million , and $0.18 million . For the nine months ended September 30, 2017 and 2016 , the Company paid approximately $0.21 million and $0.12 million , respectively, for the use of transportation services from a related party. The Company also rents equipment in Elk City, Oklahoma from a related party. For the the nine months ended September 30, 2017 and 2016 , the Company paid $0.14 million and $0.14 million , respectively. At September 30, 2017 and December 31, 2016 , the Company had $0 million and $0 in payables, respectively, and approximately $0.04 million and $0.04 million in receivables, respectively, for related parties for services provided. All agreements pertaining to real property and equipment were entered into during periods where the Company had limited liquidity and related parties secured them on behalf of the Company. All related party transactions are immaterial and have not been separately shown on the face of the financial statements. For related party disclosure related to equity transactions with ECP, see Note 10.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Lease We have various operating leases for office space and certain property and equipment. For the nine months ended September 30, 2017 and 2016 , we recorded operating lease expense of $ 1.0 million and $ 1.0 million , respectively. Required remaining lease payments for each fiscal year are as follows: ($ in thousands) 2017 $ 116 2018 426 2019 366 2020 344 2021 and thereafter 774 Total $ 2,026 Contingent Liabilities We may be subject to various legal actions, claims, and liabilities arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a materially adverse effect on our financial position, results of operations, or liquidity.

Equity Capitalization

Equity Capitalization	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Equity Capitalization	Equity Capitalization Credit Amendment Equity Infusion In connection with the Term Loan and Revolving Credit Facility amendment dated June 8, 2016 (see Note 4), ECP and its related affiliates along with other shareholders infused $40.425 million of equity into the Company and we issued 18,007,328 additional shares of common stock. Convertible Preferred Stock On December 27, 2016, we completed a private placement offering of $170.0 million , issuing 16,999,990 shares of Series A nonparticipating convertible preferred stock, par value $0.001 per share. Costs associated with the offering were approximately $7.0 million , resulting in net proceeds to the Company of approximately $163.0 million . As of December 31, 2016 , 16,999,990 shares of Series A convertible preferred stock were issued and outstanding, convertible into common stock at the conversion price per the private placement agreement. Upon the consummation of the IPO, the Series A Preferred stock automatically converted into common stock. Initial Public Offering On March 22, 2017, we consummated our IPO in which 25,000,000 shares of our common stock, par value $0.001 per share, were sold at a public offering price of $14.00 per share, with 13,250,000 shares issued and sold by the Company and 11,750,000 shares sold by existing stockholders. We received net proceeds of approximately $170.1 million after deducting $10.9 million of underwriting discounts and commissions, and $4.5 million of other offering expenses. At closing, we used the proceeds (i) to repay $71.8 million in outstanding borrowings under the term loan, (ii) to fund the purchase of additional hydraulic fracturing fleets and ancillary equipment, and (iii) for general corporate purposes. In connection with the IPO, all 16,999,990 shares of our outstanding Series A Preferred Stock converted to common stock on a 1 :1 basis. Additionally, on March 28, 2017, one executive and one director net settled a total of 226,194 of their exercisable stock options and received 162,212 shares of common stock . At September 30, 2017 and December 31, 2016 , the Company had 83,039,854 and 52,627,652 shares outstanding, respectively.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying condensed consolidated financial statements of ProPetro Holding Corp. and its subsidiary (the "Company," "we," "us" or "our") have been prepared in accordance with the requirements of the U.S. Securities and Exchange Commission ("SEC") for interim financial information and do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America ("GAAP") for annual financial statements. Those adjustments (which consisted of normal recurring accruals) that are, in the opinion of management, necessary for a fair presentation of the results of the interim periods have been made. Results of operations for such interim periods are not necessarily indicative of the results of operations for a full year due to changes in market conditions and other factors. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2016 included in the final prospectus of the Company filed with the SEC pursuant to rule 424(b) under the Securities Act of 1933 on March 20, 2017 ("Prospectus").
Fair Value Measurement	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the "exit price") in an orderly transaction between market participants at the measurement date. In determining fair value, the Company uses various valuation approaches and establishes a hierarchy for inputs used in measuring fair value that maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used, when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the assumptions other market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the observability of inputs as follows: Level 1 — Valuations based on quoted prices in active markets for identical assets or liabilities that the Company has the ability to access. Valuation adjustments and block discounts are not applied to Level 1 instruments. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Level 2 — Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3 — Valuations based on inputs that are unobservable and significant to the overall fair value measurement. 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 Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Assets and Liabilities Measured at Fair Value on a Recurring Basis Our financial instruments include cash and cash equivalents, accounts receivable, accounts payable, and a derivative financial instrument. The estimated fair value of our financial instruments — cash and cash equivalents, accounts receivable and accounts payable at September 30, 2017 and December 31, 2016 approximates their carrying value as reflected in our condensed consolidated balance sheets due to their short-term nature. We use a derivative financial instrument, an interest rate swap, to manage interest rate risk. Our policies do not permit the use of derivative financial instruments for speculative purposes. We did not designate the interest rate swap as a hedge for accounting purposes. We record all derivatives as of the end of our reporting period in our condensed consolidated balance sheet at fair value, which is based on quoted market prices, a Level 1 input. We may be exposed to credit losses in the event of nonperformance by counterparties to the interest rate swap. The counterparty of the interest rate swap is a credible, large institution, and we do not believe there is significant or material credit risk upon settlement of the contract.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Assets measured at fair value on a nonrecurring basis	Assets measured at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016 , respectively, are set forth below: Estimated fair value measurements Balance Quoted prices in active market (Level 1) Significant other observable inputs (Level 2) Significant other unobservable inputs (Level 3) Total gains (losses) ($ in thousands) September 30, 2017: Property and equipment, net $ — $ — $ — $ — $ — Goodwill $ — $ — $ — $ — $ — December 31, 2016: Property and equipment, $ 8,700 $ — $ 8,700 $ — $ (6,305 ) Goodwill $ 9,425 $ — $ — $ 9,425 $ (1,177 )

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of debt	Total debt consisted of the following at September 30, 2017 and December 31, 2016 , respectively: ($ in thousands) 2017 2016 ABL Credit Facility $ 25,000 $ — 6.25% "Term loan" due September 2019 — 146,750 Revolving Credit Facility — 13,500 Equipment financing 16,917 19,193 Total debt 41,917 179,443 Less deferred loan costs, net of amortization — 3,116 Subtotal 41,917 176,327 Less current portion of long-term debt 7,441 16,920 Total long-term debt, net of deferred loan costs $ 34,476 $ 159,407
Annual maturities of debt	Scheduled remaining annual maturities of total debt are as follows at September 30, 2017 : ($ in thousands) 2017 $ 1,778 2018 14,298 2019 805 2020 36 2021 and thereafter 25,000 Total $ 41,917

Reportable Segment Information

Reportable Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Reconciliation of segment information	A reconciliation from segment level financial information to the consolidated statement of operations is provided in the table below. Three months ended September 30, 2017 Nine months ended September 30, 2017 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Service revenue $ 271,924 $ 10,806 $ 282,730 $ 639,355 $ 28,798 $ 668,153 Adjusted EBITDA $ 50,013 $ (2,245 ) $ 47,768 $ 98,296 $ (3,641 ) $ 94,655 Depreciation and amortization $ 13,637 $ 1,108 $ 14,745 $ 35,228 $ 3,374 $ 38,602 Goodwill $ 9,425 $ — $ 9,425 $ 9,425 $ — $ 9,425 Capital expenditures $ 61,752 $ 765 $ 62,517 $ 203,097 $ 3,231 $ 206,328 Total assets $ 604,769 $ 33,822 $ 638,591 $ 604,769 $ 33,822 $ 638,591 Three months ended September 30, 2016 Nine months ended September 30, 2016 Pressure Pumping All Other Total Pressure Pumping All Other Total Service revenue $ 109,697 $ 7,207 $ 116,904 $ 251,410 $ 21,589 $ 272,999 Adjusted EBITDA $ 2,951 $ (1,616 ) $ 1,335 $ 6,500 $ (4,930 ) $ 1,570 Depreciation and amortization $ 9,274 $ 1,516 $ 10,790 $ 27,905 $ 4,764 $ 32,669 Goodwill $ 9,425 $ 1,177 $ 10,602 $ 9,425 $ 1,177 $ 10,602 Capital expenditures $ 11,641 $ 202 $ 11,843 $ 21,582 $ 312 $ 21,894 Total assets at December 31, 2016 $ 501,906 $ 39,516 $ 541,422 $ 501,906 $ 39,516 $ 541,422 Reconciliation of net income (loss) to adjusted EBITDA: Three months ended September 30, 2017 Nine months ended September 30, 2017 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Net income (loss) $ 28,372 $ (6,407 ) $ 21,965 $ 30,087 $ (27,552 ) $ 2,535 Depreciation and amortization 13,637 1,108 14,745 35,228 3,374 38,602 Interest expense — 644 644 — 6,469 6,469 Income tax (benefit) expense — (96 ) (96 ) — 128 128 Loss on disposal of assets 7,552 1,190 8,742 27,943 1,028 28,971 Stock-based compensation — 751 751 — 8,730 8,730 Other expense — 191 191 — 792 792 Other general and administrative expense (1) — 149 149 — 722 722 Deferred IPO bonus expense 452 225 677 5,038 2,668 7,706 Adjusted EBITDA $ 50,013 $ (2,245 ) $ 47,768 $ 98,296 $ (3,641 ) $ 94,655 Three months ended September 30, 2016 Nine months ended September 30, 2016 ($ in thousands) Pressure Pumping All Other Total Pressure Pumping All Other Total Net loss $ (12,265 ) $ (1,333 ) $ (13,598 ) $ (34,815 ) $ (1,015 ) $ (35,830 ) Depreciation and amortization 9,274 1,516 10,790 27,905 4,764 32,669 Interest expense — 4,550 4,550 — 15,942 15,942 Income tax benefit — (6,946 ) (6,946 ) — (18,644 ) (18,644 ) (Gain)/loss on disposal of assets 5,942 (19 ) 5,923 13,410 (551 ) 12,859 Stock-based compensation — 510 510 — 1,130 1,130 Gain on extinguishment of debt — — — — (6,975 ) (6,975 ) Other expense — 106 106 — 419 419 Adjusted EBITDA $ 2,951 $ (1,616 ) $ 1,335 $ 6,500 $ (4,930 ) $ 1,570 (1) Other general and administrative expense relates to legal settlement expense.

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Calculations of net loss per share	The table below shows the calculations for the three and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except for per share data) 2017 2016 2017 2016 Numerator (both basic and diluted) Net income (loss) relevant to common stockholders $ 21,965 $ (13,598 ) $ 2,535 $ (35,830 ) Denominator Denominator for basic income (loss) per share 83,040 52,975 74,124 42,526 Dilutive effect of stock options 2,808 — 2,822 — Dilutive effect of performance stock units 37 — — — Dilutive effect of non-vested restricted stock 379 — 172 — Denominator for diluted income (loss) per share 86,264 52,975 77,118 42,526 Basic income (loss) per common share $ 0.26 $ (0.26 ) $ 0.03 $ (0.84 ) Diluted income (loss) per common share $ 0.25 $ (0.26 ) $ 0.03 $ (0.84 )
Anti-dilutive shares excluded from diluted earnings (loss) per share calculation	As shown in the table below, the following non-vested restricted stock, performance stock units, and stock options have not been included in the calculation of diluted income (loss) per share as they would be anti-dilutive to the calculation above. (In thousands) Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Stock options 789 4,646 789 4,646 Performance stock units — — 170 — Non-vested restricted stock — 372 318 372 789 5,018 1,277 5,018

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock options, valuation assumptions	The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 45 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 1.83 % The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 55 % Expected dividends $ — Expected term (in years) 5.8 Risk free rate 1.22 % The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 45 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 1.35 % The fair value of each stock option award granted is estimated on the date of grant using the Black- Scholes option-pricing model. The fair value of the options was estimated at the date of grant using the following assumptions: Expected volatility 18 % Expected dividends $ — Expected term (in years) 6.25 Risk free rate 2.23 %
Schedule of stock options, activity	A summary of the stock option activity for the nine months ended September 30, 2017 and the year ended December 31, 2016 , is presented below. Number Weighted Weighted Outstanding at January 1, 2016 3,485,791 $ 3.96 $ 1.77 Granted 1,274,549 $ 2.25 $ 1.77 Exercised — $ — $ — Forfeited (114,456 ) $ 3.96 $ 1.77 Expired — $ — $ — Canceled — $ — $ — Outstanding at December 31, 2016 4,645,884 $ 3.49 $ 1.77 Exercisable at December 31, 2016 2,354,466 $ 3.77 $ 1.77 Outstanding at January 1, 2017 4,645,884 $ 3.49 $ 1.77 Granted 793,738 $ 14.00 $ 3.35 Exercised (226,194 ) $ 3.96 $ 1.77 Forfeited (5,148 ) $ 14.00 $ 3.35 Expired — $ — $ — Canceled (571,927 ) $ 3.96 $ 1.77 Outstanding at September 30, 2017 4,636,353 $ 5.20 $ 2.04 Exercisable at September 30, 2017 3,847,763 $ 3.39 $ 1.77
Schedule of RSUs, activity	The following table summarizes RSUs activity during the nine months ended September 30, 2017 : Number of Weighted Outstanding at January 1, 2017 372,335 $ 3.89 Granted 691,585 $ 13.65 Vested — $ — Exercised — $ — Forfeited (1,170 ) $ 13.65 Expired — $ — Canceled (372,335 ) $ 3.89 Outstanding at September 30, 2017 690,415 $ 13.65
Schedule of performance shares, activity	The following table summarizes information about the performance stock units that were outstanding at September 30, 2017 : Period Target Shares Target Target Shares Vested Target Target Shares Weighted 2017 — 169,635 — — 169,635 $ 10.73 Total — 169,635 — — 169,635

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum rental payments for operating leases	Required remaining lease payments for each fiscal year are as follows: ($ in thousands) 2017 $ 116 2018 426 2019 366 2020 344 2021 and thereafter 774 Total $ 2,026

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands	Mar. 22, 2017USD ($)$ / sharesshares	Sep. 30, 2017USD ($)$ / shares	Sep. 30, 2016USD ($)	Dec. 31, 2016$ / shares	Sep. 30, 2013$ / shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001	$ 0.001
Proceeds from issuance of common stock		$ 185,500	$ 0
Repayment of outstanding borrowings	$ 71,800	$ 164,638	$ 42,166
Stock split ratio	1.45
IPO
Subsidiary, Sale of Stock [Line Items]
Shares of common stock sold, including shares sold by third parties (in shares) | shares	25,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.001
Stock price (in dollars per share) | $ / shares	$ 14
Proceeds from issuance of common stock	$ 170,100
Payment of underwriting discounts and commissions	10,900
Payments of stock issuance costs, other	$ 4,500
IPO Sold By Company
Subsidiary, Sale of Stock [Line Items]
Shares of common stock sold, including shares sold by third parties (in shares) | shares	13,250,000
IPO - Shares From Existing Shareholders
Subsidiary, Sale of Stock [Line Items]
Shares of common stock sold, including shares sold by third parties (in shares) | shares	11,750,000

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment impairment expense		$ 0	$ 0
PP&E, net	$ 263,862	399,268		$ 263,862
Goodwill	9,425	9,425	10,602	9,425
Additions or disposals of Goodwill		0	0
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment impairment expense		0		6,305
Goodwill impairment expense		0		1,177
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) interest rate swap		200	$ 100
Interest rate swap | Recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of interest rate swap liability	300	30		300
Balance | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	9,425	$ 0		9,425
Permain drilling unit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment impairment expense	6,300
PP&E, net					$ 15,000
Surface drilling reporting unit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	1,200			1,200
Surface drilling reporting unit | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Reporting unit, fair value	3,800			3,800
Goodwill impairment expense	1,200
Surface drilling reporting unit | Balance | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Reporting unit, amount of fair value in excess of carrying amount	4,200			4,200
Surface drilling reporting unit | Estimated fair value measurements | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	$ 0			$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses)	$ 0	$ 0
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses)	0		$ (6,305)
Total gains (losses)	0		(1,177)
Balance | Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		8,700
Goodwill	0		9,425
Estimated fair value measurements | Nonrecurring basis | Quoted prices in active market (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		0
Goodwill	0		0
Estimated fair value measurements | Nonrecurring basis | Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		8,700
Goodwill	0		0
Estimated fair value measurements | Nonrecurring basis | Significant other unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		0
Goodwill	$ 0		$ 9,425

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details)

Sep. 30, 2017USD ($)

Mar. 22, 2017USD ($)

Jan. 13, 2017USD ($)

Jun. 16, 2016USD ($)

Jun. 08, 2016USD ($)

Nov. 24, 2014USD ($)

Sep. 30, 2013USD ($)

Sep. 30, 2017USD ($)

Sep. 30, 2016USD ($)

Sep. 30, 2017USD ($)

Sep. 30, 2016USD ($)

Nov. 24, 2015fleet

Mar. 31, 2014

Debt Instrument [Line Items]

Proceeds from contributed capital

$ 40,425,000

Debt instrument, covenant, additional capital, reserved for working capital

10,000,000

Debt instrument, covenant, additional capital, available for repurchase of debt

$ 30,000,000

Debt instrument, covenant, financial statements, past due, period

30 days

Debt instrument, repurchase price to par

$ 0.80

Debt instrument, repurchase price, discount to par, percentage

20.00%

Extinguishment of debt, amount

$ 37,500,000

Early repayment of senior debt

30,000,000

Payments of debt extinguishment costs

500,000

$ 0

$ 525,000

Gain on extinguishment of debt

$ 7,000,000

$ 0

$ 0

0

6,975,000

Repayments of borrowings

$ 71,800,000

$ 164,638,000

$ 42,166,000

Debt instrument, term

36 months

Number of hydraulic fracturing fleets | fleet

3

Proceeds from debt

$ 25,000,000

Proceeds from lines of credit

$ 2,100,000

Maximum

Debt Instrument [Line Items]

Debt instrument, covenant, leverage ratio, maximum

3.5

6.25% Term loan due September 2019 | 6.25% Term loan due September 2019

Debt Instrument [Line Items]

Debt instrument, face amount

$ 220,000,000

Debt instrument, interest rate, stated percentage

6.25%

6.25%

6.25%

Repayment of prior debt outstanding, percentage

100.00%

Repayments of debt

$ 75,000,000

Revolving Credit Facility | Revolving Credit Facility | Line of Credit

Debt Instrument [Line Items]

Line of credit facility, maximum borrowing capacity

$ 40,000,000

Debt instrument, interest rate, stated percentage

6.25%

Debt instrument, variable floor rate

1.00%

Repayments of borrowings

$ 13,500,000

ABL Facility | Revolving Credit Facility | Line of Credit

Debt Instrument [Line Items]

Line of credit facility, maximum borrowing capacity

$ 150,000,000

Line of credit facility, expiration period

5 years

Line of credit facility, borrowing base, accounts receivable percentage

85.00%

Line of credit, springing fixed charge coverage ratio

1

Line of credit facility, coverage ratio establishing threshold, option one, percentage of facility size and borrowing base

10.00%

Line of credit facility, coverage ratio establishing threshold, option two, amount

$ 12,000,000

Line of credit facility, commitment fee, utilization percentage, threshold

50.00%

ABL Facility | Revolving Credit Facility | Line of Credit | Minimum

Debt Instrument [Line Items]

Line of credit facility, commitment fee percentage

0.25%

ABL Facility | Revolving Credit Facility | Line of Credit | Maximum

Debt Instrument [Line Items]

Line of credit facility, commitment fee percentage

0.375%

ABL Facility | Revolving Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Minimum

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.75%

ABL Facility | Revolving Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Maximum

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

2.25%

ABL Facility | Revolving Credit Facility | Line of Credit | Base Rate | Minimum

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

0.75%

ABL Facility | Revolving Credit Facility | Line of Credit | Base Rate | Maximum

Debt Instrument [Line Items]

Debt instrument, basis spread on variable rate

1.25%

Investor

Debt Instrument [Line Items]

Proceeds from contributed capital

$ 425,000

Energy Capital Partners | Majority Shareholder

Debt Instrument [Line Items]

Proceeds from contributed capital

$ 40,000,000

Long-Term Debt - Schedule of De

Long-Term Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2013
Debt Instrument [Line Items]
Total debt	$ 41,917	$ 179,443
Less deferred loan costs, net of amortization	0	3,116
Subtotal	41,917	176,327
Less current portion of long-term debt	7,441	16,920
Total long-term debt, net of deferred loan costs	34,476	159,407
6.25% Term loan due September 2019 | 6.25% Term loan due September 2019
Debt Instrument [Line Items]
Total debt	$ 0	146,750
Debt instrument, interest rate, stated percentage	6.25%
Equipment financing | Equipment financing
Debt Instrument [Line Items]
Total debt	$ 16,917	19,193
Revolving Credit Facility | Line of Credit | ABL Facility
Debt Instrument [Line Items]
Total debt	25,000	0
Revolving Credit Facility | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	$ 0	$ 13,500
Debt instrument, interest rate, stated percentage			6.25%

Long-Term Debt - Maturities of

Long-Term Debt - Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2,017	$ 1,778
2,018	14,298
2,019	805
2,020	36
2021 and thereafter	25,000
Total	$ 41,917	$ 179,443

Reportable Segment Informatio30

Reportable Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017segment
Segment Reporting [Abstract]
Number of operating segments	7
Number of reportable segments	1

Reportable Segment Informatio31

Reportable Segment Information - Reconciliation of segment information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Service revenue	$ 282,730	$ 116,904	$ 668,153	$ 272,999
Adjusted EBITDA	47,768	1,335	94,655	1,570
Depreciation and amortization	14,745	10,790	38,602	32,669
Goodwill	9,425	10,602	9,425	10,602	$ 9,425
Capital expenditures	62,517	11,843	206,328	21,894
Total assets	638,591		638,591		541,422
Pressure Pumping
Segment Reporting Information [Line Items]
Service revenue	271,924	109,697	639,355	251,410
Adjusted EBITDA	50,013	2,951	98,296	6,500
Depreciation and amortization	13,637	9,274	35,228	27,905
Goodwill	9,425	9,425	9,425	9,425
Capital expenditures	61,752	11,641	203,097	21,582
Total assets	604,769		604,769		501,906
All Other
Segment Reporting Information [Line Items]
Service revenue	10,806	7,207	28,798	21,589
Adjusted EBITDA	(2,245)	(1,616)	(3,641)	(4,930)
Depreciation and amortization	1,108	1,516	3,374	4,764
Goodwill	0	1,177	0	1,177
Capital expenditures	765	$ 202	3,231	$ 312
Total assets	$ 33,822		$ 33,822		$ 39,516

Reportable Segment Informatio32

Reportable Segment Information - Reconciliation of segment information EBITA (Details) - USD ($) $ in Thousands	Jun. 16, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Net income (loss)		$ 21,965	$ (13,598)	$ 2,535	$ (35,830)
Depreciation and amortization		14,745	10,790	38,602	32,669
Interest expense		644	4,550	6,469	15,942
Income tax (benefit) expense		(96)	(6,946)	128	(18,644)
(Gain)/loss on disposal of assets		8,742	5,923	28,971	12,859
Stock-based compensation		751	510	8,730	1,130
Gain on extinguishment of debt	$ (7,000)	0	0	0	(6,975)
Other expense		191	106	792	419
Other general and administrative expense		149		722
Deferred IPO bonus expense		677		7,706
Adjusted EBITDA		47,768	1,335	94,655	1,570
Pressure Pumping
Segment Reporting Information [Line Items]
Net income (loss)		28,372	(12,265)	30,087	(34,815)
Depreciation and amortization		13,637	9,274	35,228	27,905
Interest expense		0	0	0	0
Income tax (benefit) expense		0	0	0	0
(Gain)/loss on disposal of assets		7,552	5,942	27,943	13,410
Stock-based compensation		0	0	0	0
Gain on extinguishment of debt			0		0
Other expense		0	0	0	0
Other general and administrative expense		0		0
Deferred IPO bonus expense		452		5,038
Adjusted EBITDA		50,013	2,951	98,296	6,500
All Other
Segment Reporting Information [Line Items]
Net income (loss)		(6,407)	(1,333)	(27,552)	(1,015)
Depreciation and amortization		1,108	1,516	3,374	4,764
Interest expense		644	4,550	6,469	15,942
Income tax (benefit) expense		(96)	(6,946)	128	(18,644)
(Gain)/loss on disposal of assets		1,190	(19)	1,028	(551)
Stock-based compensation		751	510	8,730	1,130
Gain on extinguishment of debt			0		(6,975)
Other expense		191	106	792	419
Other general and administrative expense		149		722
Deferred IPO bonus expense		225		2,668
Adjusted EBITDA		$ (2,245)	$ (1,616)	$ (3,641)	$ (4,930)

Net Income (Loss) Per Share - C

Net Income (Loss) Per Share - Calculation of net loss per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator (both basic and diluted)
Net income (loss) relevant to common stockholders	$ 21,965	$ (13,598)	$ 2,535	$ (35,830)
Denominator
Denominator for basic earnings (loss) per share (in shares)	83,040	52,975	74,124	42,526
Denominator for diluted income (loss) per share (in shares)	86,264	52,975	77,118	42,526
Basic income (loss) per common share (in dollars per share)	$ 0.26	$ (0.26)	$ 0.03	$ (0.84)
Diluted income (loss) per common share (in dollars per share)	$ 0.25	$ (0.26)	$ 0.03	$ (0.84)
Stock options
Denominator
Dilutive effect of share based payment (in shares)	2,808	0	2,822	0
Performance stock units
Denominator
Dilutive effect of share based payment (in shares)	37	0	0	0
Restricted Stock Units (RSUs)
Denominator
Dilutive effect of share based payment (in shares)	379	0	172	0

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Anti-dilutive Shares Excluded from Diluted Earnings (Loss) Per Share Calculation (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	789	5,018	1,277	5,018
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	789	4,646	789	4,646
Performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	0	0	170	0
Non-vested restricted stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	0	372	318	372

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details)	Sep. 30, 2017USD ($)$ / shares	Jun. 05, 2017shares	Mar. 22, 2017shares	Mar. 16, 2017USD ($)shares	Jul. 19, 2016installmentshares	Dec. 31, 2014	Dec. 01, 2013installmentshares	Sep. 30, 2013$ / sharesshares	Jun. 14, 2013shares	Sep. 30, 2017USD ($)$ / shares	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)$ / sharesshares	Sep. 30, 2016USD ($)	Dec. 31, 2016$ / sharesshares	Dec. 31, 2014$ / sharesshares	Mar. 31, 2017shares	Mar. 04, 2013shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)												793,738		1,274,549
Outstanding value of options (in dollars per share) | $ / shares												$ 14		$ 2.25
Forfeited (in shares)												5,148		114,456
Deferred IPO bonus expense | $										$ 677,000		$ 7,706,000
Canceled (in shares)												(571,927)		0
Common stock, par value (in dollars per share) | $ / shares	$ 0.001							$ 0.001		$ 0.001		$ 0.001		$ 0.001
Stock-based compensation | $										$ 751,000	$ 510,000	$ 8,730,000	$ 1,130,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			372,335					372,335				691,585
Canceled (in shares)			(372,335)
Restricted stock units, conversion of stock, conversion rights (in shares)								1
Granted (in dollars per share) | $ / shares								$ 3.89				$ 13.65
Vested (in shares)												0
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)												169,635
Vested (in shares)												0
Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)																	4,645,884
Deferred IPO bonus expense | $				$ 5,100,000
Stock Option Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)															3,499,228
Outstanding value of options (in dollars per share) | $ / shares															$ 3.96
Expiration period						10 years
Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)																5,800,000
Compensation cost not yet recognized, period for recognition	2 years 10 months 24 days
Tax benefit from compensation expense | $												$ 8,700,000	1,100,000
Compensation not yet recognized, stock options | $	$ 7,500,000									$ 7,500,000		7,500,000
Incentive Award Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		319,250
Granted (in shares)		319,250
Stock-based compensation | $												5,800,000	0
Restricted stock units, conversion of stock, conversion rights (in shares)		1
Incentive Award Plan | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation | $												200,000	0
June 14, 2013 | Stock Option Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)									2,799,408
Expiration period									10 years
Award vesting rights									25.00%
Stock-based compensation | $												700,000	900,000
December 1, 2013 | Stock Option Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)							699,820
Number of installments | installment							4
Expiration period							10 years
Forfeited (in shares)														114,456
July 19, 2016 | Stock Option Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					1,274,549
Number of installments | installment					5
Expiration period					10 years
Stock-based compensation | $												1,800,000	200,000
March 16, 2017 | Stock Option Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				793,738
Expiration period				10 years
Stock-based compensation | $												$ 400,000	$ 0

Stock-Based Compensation - Fair

Stock-Based Compensation - Fair Value Of Options (Details) - Stock Option Plan - Stock options - USD ($) $ in Thousands	Mar. 16, 2017	Jul. 19, 2016	Dec. 01, 2013	Jun. 14, 2013
June 14, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility				45.00%
Expected dividends				$ 0
Expected term (in years)				6 years 3 months
Risk free rate				1.35%
December 1, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility			45.00%
Expected dividends			$ 0
Expected term (in years)			6 years 3 months
Risk free rate			1.83%
July 19, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility		55.00%
Expected dividends		$ 0
Expected term (in years)		5 years 9 months
Risk free rate		1.22%
March 16, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	18.00%
Expected dividends	$ 0
Expected term (in years)	6 years 3 months
Risk free rate	2.23%

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary Of Stock Option Activity (Details) - $ / shares	Mar. 28, 2017	Sep. 30, 2017	Dec. 31, 2016
Number of Shares
Outstanding beginning balance (in shares)		4,645,884	3,485,791
Granted (in shares)		793,738	1,274,549
Exercised (in shares)	(162,212)	(226,194)	0
Forfeited (in shares)		(5,148)	(114,456)
Expired (in shares)		0	0
Canceled (in shares)		(571,927)	0
Outstanding ending balance (in shares)		4,636,353	4,645,884
Exercisable ending balance (in shares)		3,847,763	2,354,466
Weighted Average Exercise Price
Outstanding beginning balance (in dollars per share)		$ 3.49	$ 3.96
Granted (in dollars per share)		14	2.25
Exercised (in dollars per share)		3.96	0
Forfeited (in dollars per share)		14	3.96
Expired (in dollars per share)		0	0
Canceled (in dollars per share)		3.96	0
Outstanding ending balance (in dollars per share)		5.20	3.49
Exercisable ending balance (in dollars per share)		3.39	3.77
Weighted Average Grant-Date Fair Value
Outstanding beginning balance (in dollars per share)		1.77	1.77
Granted (in dollars per share)		3.35	1.77
Exercised (in dollars per share)		1.77	0
Forfeited (in dollars per share)		3.35	1.77
Expired (in dollars per share)		0	0
Canceled (in dollars per share)		1.77	0
Outstanding ending balance (in dollars per share)		2.04	1.77
Exercisable ending balance (in dollars per share)		$ 1.77	$ 1.77

Stock-Based Compensation - Su38

Stock-Based Compensation - Summary Of RSU Activity (Details) - Restricted Stock Units (RSUs) - $ / shares	Mar. 22, 2017	Sep. 30, 2013	Sep. 30, 2017
Number of Shares
Outstanding at Beginning of Period (in shares)			372,335
Granted (in shares)	372,335	372,335	691,585
Vested (in shares)			0
Exercised (in shares)			0
Forfeited (in shares)			(1,170)
Expired (in shares)			0
Canceled (in shares)			(372,335)
Outstanding at End of Period (in shares)			690,415
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017 (in dollars per share)			$ 3.89
Granted (in dollars per share)		$ 3.89	13.65
Vested (in dollars per share)			0
Exercised (in dollars per share)			0
Forfeited (in dollars per share)			13.65
Expired (in dollars per share)			0
Canceled (in dollars per share)			3.89
Outstanding at June 30, 2017 (in dollars per share)			$ 13.65

Stock-Based Compensation - Su39

Stock-Based Compensation - Summary Of Performance Shares Activity (Details) - Performance stock units - $ / shares	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at Beginning of Period (in shares)	0
Target Shares Granted (in shares)	169,635
Target Shares Vested (in shares)	0
Target Shares Forfeited (in shares)	0
Outstanding at End of Period (in shares)	169,635
2,017
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at Beginning of Period (in shares)	0
Target Shares Granted (in shares)	169,635
Target Shares Vested (in shares)	0
Target Shares Forfeited (in shares)	0
Outstanding at End of Period (in shares)	169,635
Weighted Average Grant Date Fair Value per Share (in dollars per share)		$ 10.73

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017USD ($)property	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Related Party Transaction [Line Items]
Operating leases, year two	$ 426,000
Operating leases, year three	366,000
Operating leases, year four	344,000
Payable to related parties	0		$ 0
Receivable from related parties	$ 40,000		$ 40,000
Related party leasing
Related Party Transaction [Line Items]
Number of properties adjacent to corporate office subject to leases | property	5
Related party transportation services
Related Party Transaction [Line Items]
Expenses with related party	$ 210,000	$ 120,000
Related party equipment rental
Related Party Transaction [Line Items]
Expenses with related party	$ 140,000	$ 140,000
Corporate offices | Related party leasing
Related Party Transaction [Line Items]
Lease term	5 years
Extension option term	5 years
Operating leases	$ 70,000
Property 1 | Related party leasing
Related Party Transaction [Line Items]
Operating leases	30,000
Operating leases, year two	30,000
Operating leases, year three	90,000
Operating leases, year four	90,000
Operating leases, year five	$ 180,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Operating leases expense	$ 1	$ 1

Commitments and Contingencies42

Commitments and Contingencies - Operating Leases, Future Minimum Payments (Details) $ in Thousands	Sep. 30, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,017	$ 116
2,018	426
2,019	366
2,020	344
2021 and thereafter	774
Total	$ 2,026

Equity Capitalization - Additio

Equity Capitalization - Additional Information (Details) $ / shares in Units, $ in Thousands	Mar. 28, 2017exectivesdirectorshares	Mar. 22, 2017USD ($)$ / sharesshares	Dec. 27, 2016USD ($)$ / sharesshares	Jun. 08, 2016USD ($)shares	Sep. 30, 2017USD ($)$ / sharesshares	Sep. 30, 2016USD ($)	Dec. 31, 2016$ / sharesshares	Sep. 30, 2013$ / shares
Subsidiary, Sale of Stock [Line Items]
Proceeds from contributed capital | $				$ 40,425
Proceeds from issuance of convertible preferred stock | $			$ 170,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.001		$ 0.001
Payment of IPO costs | $					$ 15,099	$ 0
Preferred stock, issued (in shares)					0		16,999,990
Preferred stock, outstanding (in shares)					0		16,999,990
Common stock, par value (in dollars per share) | $ / shares					$ 0.001		$ 0.001	$ 0.001
Proceeds from IPO | $					$ 185,500	0
Repayment of outstanding borrowings | $		$ 71,800			$ 164,638	$ 42,166
Number of executives | exectives	1
Number of directors | director	1
Exercisable stock options (in shares)	226,194
Exercised (in shares)	162,212				226,194		0
Common stock, outstanding (in shares)					83,039,854		52,627,652
Private Placement
Subsidiary, Sale of Stock [Line Items]
Shares of common stock sold, including shares sold by third parties (in shares)			16,999,990
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.001
Payment of IPO costs | $			$ 7,000
Sale of stock, consideration received on transaction | $			$ 163,000
IPO
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock (in shares)		13,250,000
Shares of common stock sold, including shares sold by third parties (in shares)		25,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.001
Stock price (in dollars per share) | $ / shares		$ 14
Shares sold by third party (in shares)		11,750,000
Proceeds from IPO | $		$ 170,100
Payment of underwriting discounts and commissions | $		10,900
Payments of stock issuance costs, other | $		$ 4,500
Performance stock units | IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares of outstanding stock converted (in shares)		16,999,990
Series A Preferred Stock Converted To Common Stock | IPO
Subsidiary, Sale of Stock [Line Items]
Shares of common stock issued for each share of preferred stock converted		1
Energy Capital Partners and Affiliates
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock (in shares)				18,007,328