Paycom Software (PAYC) 10-Q 3 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 25, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	PAYC
Entity Registrant Name	Paycom Software, Inc.
Entity Central Index Key	1,590,955
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		59,063,253

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 68,121	$ 46,077
Accounts receivable	2,350	1,576
Prepaid expenses	7,001	4,982
Inventory	420	979
Income tax receivable	3,034	7,047
Derivative asset	13
Deferred contract costs	28,920	26,403
Current assets before funds held for clients	109,859	87,064
Funds held for clients	1,095,160	1,089,201
Total current assets	1,205,019	1,176,265
Property and equipment, net	159,561	147,705
Deposits and other assets	2,021	1,456
Goodwill	51,889	51,889
Intangible assets, net	905	958
Long-term derivative asset	155
Long-term deferred contract costs	188,580	171,865
Total assets	1,608,130	1,550,138
Current liabilities:
Accounts payable	3,421	6,490
Accrued commissions and bonuses	2,605	9,585
Accrued payroll and vacation	11,322	7,015
Deferred revenue	7,358	6,982
Current portion of long-term debt	1,331	888
Accrued expenses and other current liabilities	20,145	19,991
Current liabilities before client funds obligation	46,182	50,951
Client funds obligation	1,095,160	1,089,201
Total current liabilities	1,141,342	1,140,152
Deferred income tax liabilities, net	53,401	49,129
Long-term derivative liability		554
Long-term deferred revenue	46,419	44,642
Net long-term debt, less current portion	33,935	34,414
Total long-term liabilities	133,755	128,739
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value (100,000,000 shares authorized, 60,446,702 and 60,149,411 shares issued at March 31, 2018 and December 31, 2017, respectively; 57,916,718 and 57,788,573 shares outstanding at March 31, 2018 and December 31, 2017, respectively)	604	601
Additional paid-in capital	189,302	161,809
Retained earnings	299,685	258,525
Treasury stock, at cost (2,529,984 and 2,360,838 shares at March 31, 2018 and December 31, 2017, respectively)	(156,558)	(139,688)
Total stockholders' equity	333,033	281,247
Total liabilities and stockholders' equity	$ 1,608,130	$ 1,550,138

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	60,446,702	60,149,411
Common stock, shares outstanding	57,916,718	57,788,573
Treasury stock, shares	2,529,984	2,360,838

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Recurring	$ 151,885	$ 117,914
Implementation and other	2,031	1,594
Total revenues	153,916	119,508
Cost of revenues
Operating expenses	20,568	15,086
Depreciation and amortization	3,037	2,060
Total cost of revenues	23,605	17,146
Administrative expenses
Sales and marketing	32,352	25,579
Research and development	11,250	6,797
General and administrative	32,657	15,250
Depreciation and amortization	3,032	2,226
Total administrative expenses	79,291	49,852
Total operating expenses	102,896	66,998
Operating income	51,020	52,510
Interest expense		(257)
Other income (expense), net	1,030	95
Income before income taxes	52,050	52,348
Provision for income taxes	10,890	18,654
Net income	$ 41,160	$ 33,694
Earnings per share, basic	$ 0.71	$ 0.58
Earnings per share, diluted	$ 0.70	$ 0.57
Weighted average shares outstanding:
Basic	57,793,023	57,307,187
Diluted	58,738,732	58,525,980

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income	$ 41,160	$ 33,694
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,069	4,286
Amortization of debt issuance costs	6	23
Stock-based compensation expense	23,222	3,343
Cash paid for derivative settlement	(79)
Gain on derivative	(738)
Deferred income taxes, net	4,272	1,285
Changes in operating assets and liabilities:
Accounts receivable	(774)	(508)
Prepaid expenses	(2,019)	(938)
Inventory	(193)	176
Deposits and other assets	(565)	(154)
Deferred contract costs	(17,712)	(13,563)
Accounts payable	(710)	(1,349)
Income taxes, net	4,013	17,269
Accrued commissions and bonuses	(6,980)	(5,277)
Accrued payroll and vacation	4,307	2,919
Deferred revenue	2,153	2,455
Accrued expenses and other current liabilities	2,232	(3,436)
Net cash provided by operating activities	57,664	40,225
Cash flows from investing activities
Net change in funds held for clients	(5,959)	(92,736)
Purchases of property and equipment	(18,708)	(9,136)
Net cash provided by investing activities	(24,667)	(101,872)
Cash flows from financing activities
Proceeds from issuance of long-term debt		2,093
Repurchases of common stock	(4,999)
Withholding taxes paid related to net share settlement	(11,871)
Principal payments on long-term debt		(282)
Net change in client funds obligation	5,959	92,736
Payment of debt issuance costs	(42)	(143)
Net cash (used in) provided by financing activities	(10,953)	94,404
Increase in cash and cash equivalents	22,044	32,757
Cash and cash equivalents
Beginning of period	46,077	60,158
End of period	$ 68,121	$ 92,915

Description of Business and Bas

Description of Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Description of Business Paycom Software, Inc. (“Software”) and its wholly owned subsidiaries (collectively, the “Company”) is a leading provider of comprehensive, cloud-based human capital management (“HCM”) software delivered as Software-as-a-Service. Unless we state otherwise or the context otherwise requires, the terms “we”, “our”, “us” and the “Company” refer to Software and its consolidated subsidiaries. We provide functionality and data analytics that businesses need to manage the complete employment lifecycle, from recruitment to retirement. Our solution requires virtually no customization and is based on a core system of record maintained in a single database for all HCM functions, including talent acquisition, time and labor management, payroll, talent management and human resources (“HR”) management applications. Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial statements that permit reduced disclosure for interim periods. In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments necessary for the fair presentation of our consolidated balance sheets as of March 31, 2018 and December 31, 2017, our consolidated statements of income for the three months ended March 31, 2018 and 2017 and our consolidated statements of cash flows for the three months ended March 31, 2018 and 2017. Such adjustments are of a normal recurring nature. The information in this Quarterly Report on Form 10-Q (this “Form 10-Q”) should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 that was filed with the SEC on February 14, 2018 (the “Form 10-K”). The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results expected for the full year. Effective January 1, 2018, we adopted the requirements of Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, as discussed in Note 2. All amounts and disclosures set forth in this Form 10-Q have been updated to comply with the new standards, as indicated by the “as adjusted” footnote.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Our significant accounting policies are discussed in “Note 2. Summary of Significant Accounting Policies” in the notes to our audited consolidated financial statements for the year ended December 31, 2017, included in the Form 10-K. Recently Adopted New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (the “FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). This authoritative guidance includes a comprehensive new revenue recognition model that requires revenue to be recognized in a manner to depict the transfer of goods or services to a customer at an amount that reflects the consideration expected to be received in exchange for those goods or services. ASU 2014-09 also includes Accounting Standards Codification (“ASC”) 340-40, “Other Assets and Deferred Costs – Contracts with Customers” (“ASC 340-40”), which codifies the guidance on other assets and deferred costs relating to Impacts to Previously Reported Results The provisions of ASU 2014-19 do not materially impact the timing or amount of revenue we recognize. The primary impact of adopting the new standard is the manner in which we account for certain costs to obtain new contracts (i.e., selling and commission costs) and costs to fulfill contracts (i.e., costs related to upfront implementation activities performed), which we had previously expensed as incurred. We also determined that the nonrefundable upfront fee charged to our clients, coupled with the option to renew, represents an implied performance obligation in the form of a material right. However, as these fees are deferred and recognized ratably over the ten-year estimated client life, consistent with our prior accounting policy, there is no change in revenue recognition. See Note 3 for further details. The following table presents a recast of selected unaudited consolidated statement of income line items after giving effect to the adoption of ASU 2014-09 (dollars in thousands, except per share amounts): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Administrative expenses Sales and marketing $ 36,848 $ (11,269 ) $ 25,579 General and administrative $ 17,826 $ (2,576 ) $ 15,250 Operating income $ 38,665 $ 13,845 $ 52,510 Provision for income taxes $ 12,889 $ 5,765 $ 18,654 Net income $ 25,614 $ 8,080 $ 33,694 Earnings per share, basic $ 0.44 $ 0.14 $ 0.58 Earnings per share, diluted $ 0.43 $ 0.14 $ 0.57 The following table presents a recast of selected unaudited consolidated balance sheet line items after giving effect to the adoption of ASU 2014-09 (in thousands): December 31, 2017 As previously reported Adjustments As Adjusted Assets Deferred contract costs $ — $ 26,403 $ 26,403 Deferred income tax assets, net $ 3,294 $ (3,294 ) $ — Long-term deferred contract costs $ — $ 171,865 $ 171,865 Liabilities and Stockholders' Equity Deferred income tax liabilities, net $ — $ 49,129 $ 49,129 Additional paid-in capital $ 137,234 $ 24,575 $ 161,809 Retained earnings $ 137,255 $ 121,270 $ 258,525 The following table presents a recast of selected unaudited consolidated statement of cash flow line items after giving effect to the adoption of ASU 2014-09 (in thousands): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Cash flows from operating activities Net income $ 25,614 $ 8,080 $ 33,694 Stock-based compensation expense $ 3,625 $ (282 ) $ 3,343 Deferred income taxes, net $ (4,480 ) $ 5,765 $ 1,285 Deferred contract costs $ — $ (13,563 ) $ (13,563 ) Net cash provided by operating activities $ 40,225 $ — $ 40,225 Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates include income taxes, contingencies, the useful life of property and equipment and intangible assets, the life of our client relationships, the fair value of our stock-based awards and the fair value of our financial instruments, intangible assets and goodwill. These estimates are based on historical experience where applicable and other assumptions that management believes are reasonable under the circumstances. As such, actual results could materially differ from these estimates. Seasonality Our revenues are seasonal in nature. Recurring revenues include revenues relating to the annual processing of payroll forms, such as Form W-2, Form 1099, and Form 1095 and revenues from processing unscheduled payroll runs (such as bonuses) for our clients. Because payroll forms are typically processed in the first quarter of the year, first quarter revenues and margins are generally higher than in subsequent quarters. These seasonal fluctuations in revenues can also have an impact on gross profits. Historical results impacted by these seasonal trends should not be considered a reliable indicator of our future results of operations. Employee Stock Purchase Plan An award issued under the Paycom Software, Inc. Employee Stock Purchase Plan (the “ESPP”) is classified as a share-based liability and recorded at the fair value of the award. Expense is recognized, net of estimated forfeitures, on a straight-line basis over the requisite service period. Funds Held for Clients and Client Funds Obligation As part of our payroll and tax filing application, we (i) collect client funds to satisfy their respective federal, state and local employment tax obligations, (ii) remit such funds to the appropriate taxing authorities and accounts designated by our clients, and (iii) manage client tax filings and any related correspondence with taxing authorities. Amounts collected by us from clients for their federal, state and local employment taxes are invested by us, and we earn interest on these funds during the interval between receipt and disbursement. These investments are shown in our consolidated balance sheets as funds held for clients, and the offsetting liability for the tax filings is shown as client funds obligation. The liability is recorded in the accompanying balance sheets at the time we obtain the funds from clients. The client funds obligation represents liabilities that will be repaid within one year of the balance sheet date. As of March 31, 2018 and December 31, 2017, the funds held for clients were invested in money market funds, demand deposit accounts, commercial paper and certificates of deposit. These investments are shown in the consolidated balance sheets as funds held for clients and are classified as a current asset because the funds are held solely to satisfy the client funds obligation. Stock Repurchase Plan On February 8, 2017, we announced that our Board of Directors amended and extended our stock repurchase plan originally announced on May 26, 2016, such that we were authorized to purchase (in the aggregate) up to an additional $50.0 million of common stock through January 2019. On October 30, 2017, our Board of Directors again amended and extended our stock repurchase plan, such that we are authorized to purchase (in the aggregate) up to an additional $75 million of common stock over a 24-month period. Our stock repurchase plan will expire on October 30, 2019. On February 13, 2018, we announced that our Board of Directors further amended and extended our stock repurchase plan, such that we are authorized to purchase up to an additional $100.0 million of common stock. Our stock repurchase plan will expire on February 12, 2020. According to the terms of our stock repurchase plan, shares may be repurchased from time to time in open market transactions at prevailing market prices, in privately negotiated transactions or by other means in accordance with federal securities laws, including Rule 10b5-1 programs. Our stock repurchase plan may be suspended or discontinued at any time. The actual timing, number and value of shares repurchased depends on a number of factors, including the market price of our common stock, general market and economic conditions, the net-downs associated with the vesting of restricted stock and other corporate considerations. During the three months ended March 31, 2018, we repurchased an aggregate of 169,146 shares of our common stock at an average cost of $99.74 per share, including 108,909 shares withheld to satisfy tax withholding obligations for certain employees upon the vesting of restricted common stock. Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842).” The purpose of this new guidance is to increase the transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet as well as providing additional disclosure requirements related to leasing arrangements. The new guidance is effective for us beginning January 1, 2019. We are in the process of evaluating and planning for the adoption and implementation of the new standard, including evaluating practical expedient and accounting policy elections and determining the impact to our systems and processes that we use to account for leases. We are also still in the process of completing our assessment of the overall impact to our consolidated financial statements; however, we anticipate that most of our operating lease commitments will be subject to the new guidance, resulting in a significant increase in the total assets and liabilities reported on the Company’s consolidated balance sheets.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenue	3. REVENUE Revenues are recognized when control of the promised goods or services is transferred to our clients in an amount that reflects the consideration we expect to be entitled to for those goods or services. Substantially all of our revenue is comprised of revenue from contracts with clients. Sales and other applicable taxes are excluded from revenues. The following table, consistent with our Consolidated Statements of Income, disaggregates revenue by recurring and implementation and other revenue which we believe represents the major categories of revenues (in thousands): Three Months Ended March 31, 2018 2017 Revenues Recurring $ 151,885 $ 117,914 Implementation and other 2,031 1,594 Total revenues $ 153,916 $ 119,508 Recurring Recurring revenues are derived primarily from our talent acquisition, time and labor management, payroll, talent management and HR management applications as well as fees charged for form filings and delivery of client payroll checks and reports. Talent acquisition includes our applicant tracking, candidate tracker, background check, on-boarding, e-verify and tax credit services applications. Time and labor management includes time and attendance, scheduling/schedule exchange, time-off requests, labor allocation, labor management reports/push reporting and geofencing/geotracking. Payroll includes our payroll and tax management, Paycom Pay, expense management, garnishment management and GL Concierge applications. Talent management includes our employee self-service, compensation budgeting, performance management, executive dashboard and Paycom learning and course content applications. HR management includes our document and task management, government and compliance, benefits administration, COBRA administration, personnel action forms, surveys and enhanced Affordable Care Act (“ACA”) applications. The performance obligations related to recurring revenues are satisfied during each client’s payroll period, with the agreed-upon fee being charged and collected as part of our processing of the client’s payroll. Recurring revenues are recognized at the conclusion of processing of each client’s payroll-period, when each respective payroll client is billed. Collectability is reasonably assured as the fees are collected through an automated clearing house as part of the client’s payroll cycle or through direct wire transfer, which minimizes the default risk. The contract period for substantially all contracts associated with these revenues is one month due to the fact that both Paycom and the client have the unilateral right to terminate a wholly unperformed contract without compensating the other party by providing 30-day notice of termination. Our payroll application is the foundation of our solution and all of our clients are required to utilize this application in order to access our other applications. For clients who purchase multiple applications, due to the short team nature of our contracts, we do not determine it meaningful to separately assess and identify whether or not each application potentially represents its own, individual, performance obligation as the revenue generated from each application is recognized within the same month as the revenue from the core payroll application. Similarly, we do not determine it meaningful to individually determine the standalone selling price for each application. We consider the total price charged to a client in a given period to be indicative of the standalone selling price as the total amount charged is within a reasonable range of prices typically charged for our goods and services for comparable classes of client groups. Implementation and other Implementation and other revenues consist of nonrefundable upfront conversion fees which are charged to new clients to offset the expense of new client set-up as well as revenues from the sale of time clocks as part of our employee time and attendance services. Although these revenues are related to our recurring revenues, they represent distinct performance obligations. Implementation activities primarily represent administrative activities that allow us to fulfill future performance obligations for our clients and do not represent services transferred to the client. However, the nonrefundable upfront fee charged to our clients results in an implied performance obligation in the form of a material right to the client related to the client’s option to renew at the end of each 30-day contract period. Further, given that the total price charged to clients for all other services within the contract are sold at standalone selling price, coupled with the fact that the upfront fees are consistent with upfront fees Paycom charges in similar contracts that we have with clients, the standalone selling price of the client’s option to renew approximates the dollar amount of the nonrefundable upfront fee. The nonrefundable upfront fee is typically included on the client’s first invoice, and is deferred and recognized ratably over the estimated renewal period (i.e. the ten-year estimated client life). Revenue from the sale of time clocks is recognized when control is transferred to the client upon delivery of the product. We estimated standalone selling price for the time clocks by maximizing the use of observable inputs such as our specific pricing practices for time clocks. Contract Balances The timing of revenue recognition for recurring services is consistent with the invoicing of clients as they both occur during the respective client payroll period for which the services are provided. Therefore, we do not recognize a contract asset or liability resulting from the timing of revenue recognition and invoicing. We have elected to apply the practical expedient not to disclose the value of unsatisfied performance obligations for contracts that are less than one year in length. However, this expedient cannot be applied to initial 30-day contracts with a client that also contain an implied performance obligation in the form of a material right as the material right performance obligation is being recognized over the expected client life which exceeds one year. For these contracts, we determined that the core, non-material right, performance obligations are generally satisfied in full by the end of each reporting period as most of our contracts with clients start at the beginning of a calendar month. For the material right performance obligation, as discussed above, we defer the amounts allocated and recognize them ratably over the estimated client life of ten years. Finally, we have also elected to apply the transition expedient that allows for all reporting periods presented before the date of initial application to exclude disclosure of the amounts of transaction price allocated to the remaining unsatisfied performance obligations. Accordingly, the table below is only for the three months ended March 31, 2018. Changes in deferred revenue related to material right performance obligations were as follows (in thousands): Three Months Ended March 31, 2018 Balance, beginning of period $ 51,624 Deferral of revenue 3,943 Recognition of unearned revenue (1,790 ) Balance, end of period $ 53,777 We expect to recognize $5.5 million of the above deferred revenue amount in 2018, $7.4 million in 2019, and $40.9 million thereafter. Assets Recognized from the Costs to Obtain and Costs to Fulfill Revenue Contracts We recognize an asset for the incremental costs of obtaining a contract with a client if we expect the amortization period to be longer than one year. We have determined that certain selling and commission costs meet the capitalization criteria under ASC 340-40, which prior to the adoption of ASU 2014-09 we had previously expensed as incurred. We also recognize an asset for the costs to fulfill a contract with a client if they are specifically identifiable, generate or enhance resources used to satisfy future performance obligations, and are expected to be recovered. We have determined that substantially all costs related to implementation activities are administrative in nature and also meet the capitalization criteria under ASC 340-40. These capitalized costs to fulfill principally relate to upfront direct costs that are expected to be recovered through margin and that enhance our ability to satisfy future performance obligations. The assets related to both costs to obtain and costs to fulfill contracts with clients are capitalized and amortized over the expected period of benefit which we have determined to be the estimated client relationship of ten years. The expected period of benefit has been judgmentally determined to be the estimated life of the client relationship largely due to the fact that there are no new costs to obtain or costs to fulfill incurred upon renewal after the initial contract unless the client signs on for additional applications in the future, at which time additional fulfillment costs are minimized by our seamless single-database platform. Furthermore, while changes and development to our technology may periodically occur, enhancements to the platform used to perform the payroll processing and related human resource activities remain fundamentally unchanged. These assets are presented as deferred contract costs in the accompanying consolidated balance sheets. Amortization expense related to costs to obtain and fulfill a contract are included in the “sales and marketing” and “general and administrative” in the accompanying consolidated statements of operations. The following table presents the asset balances and related amortization expense for these contract costs (in thousands): As of and for the Three Months Ended March 31, 2018 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 126,207 $ 15,122 $ (4,418 ) $ 136,911 Costs to fulfill a contract $ 72,061 $ 11,043 $ (2,515 ) $ 80,589

Property and Equipment, Net

Property and Equipment, Net	3 Months Ended
	Mar. 31, 2018
Property Plant And Equipment [Abstract]
Property and Equipment, Net	4. PROPERTY AND EQUIPMENT, NET Property and equipment and accumulated depreciation and amortization were as follows: March 31, December 31, 2018 2017 Property and equipment Buildings $ 60,647 $ 60,441 Software and capitalized software costs 49,404 41,996 Computer equipment 30,525 27,928 Rental clocks 13,627 13,131 Furniture, fixtures and equipment 7,776 7,528 Leasehold improvements 779 767 Vehicles 50 — 162,808 151,791 Less: accumulated depreciation and amortization (59,540 ) (53,525 ) 103,268 98,266 Construction in progress 47,280 40,446 Land 9,013 8,993 Property and equipment, net $ 159,561 $ 147,705 We capitalize computer software development costs related to software developed for internal use in accordance with ASC 350-40. For the three months ended March 31, 2018 and 2017, respectively, we capitalized $6.6 million and $2.9 million of computer software development costs related to software developed for internal use. Rental clocks included in property and equipment, net represent time clocks issued to clients under month-to-month operating leases. As such, these items are transferred from inventory to property and equipment and depreciated over their estimated useful lives. Included in the construction in progress balance at March 31, 2018 and December 31, 2017 is $1.6 million and $2.0 million in retainage, respectively. We capitalize interest incurred for indebtedness related to construction of our principal executive offices. For the three months ended March 31, 2018, we incurred interest costs of $0.4 million, $0.4 million of which was capitalized. For the three months ended March 31, 2017, we incurred interest costs of $0.4 million, $0.1 million of which was capitalized. Depreciation and amortization expense for property and equipment, net was $6.0 million and $3.9 million for the three months ended March 31, 2018 and 2017, respectively.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	5. GOODWILL AND INTANGIBLE ASSETS, NET Goodwill represents the excess of cost over our net tangible and identified intangible assets. As of March 31, 2018 and December 31, 2017, we had goodwill of $51.9 million. We have selected June 30 as our annual goodwill impairment testing date and determined there was no impairment as of June 30, 2017. For the three months ended March 31, 2018 and the year ended December 31, 2017, there were no indicators of impairment. All of our intangible assets other than goodwill are considered to have finite lives and, as such, are subject to amortization. The following tables provide the components of intangible assets: March 31, 2018 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 4.3 3,194 (2,289 ) 905 Total $ 3,194 $ (2,289 ) $ 905 December 31, 2017 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 4.5 3,194 (2,236 ) 958 Total $ 3,194 $ (2,236 ) $ 958 The weighted average remaining useful life of our intangible assets was 4.3 years as of March 31, 2018. Amortization of intangible assets for the three months ended March 31, 2018 and 2017 was $0.1 million and $0.4 million, respectively.

Long-Term Debt, Net

Long-Term Debt, Net	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Long-Term Debt, Net	6. LONG-TERM DEBT, NET As of the dates indicated, our long-term debt consisted of the following: March 31, 2018 December 31, 2017 Net term note to bank due September 7, 2025 $ 35,266 $ 35,302 Total long-term debt (including current portion) 35,266 35,302 Less: Current portion (1,331 ) (888 ) Total long-term debt, net $ 33,935 $ 34,414 On December 7, 2017, we entered into a senior secured term credit agreement (the “Term Credit Agreement”), pursuant to which JPMorgan Chase Bank N.A., Bank of America, N.A. and Kirkpatrick Bank agreed to make certain term loans to us (the “Term Loans”) in an aggregate principal amount of $60.0 million on or prior to September 7, 2018. As of March 31, 2018, our indebtedness consisted solely of Term Loans made under the Term Credit Agreement. Unamortized debt issuance costs of $0.2 million as of both March 31, 2018 and December 31, 2017, are presented as a direct deduction from the carrying amount of the debt liability. After giving effect to the Term Loans made on December 7, 2017, there was $24.5 million of borrowing capacity remaining under the Term Credit Agreement as of March 31, 2018. Our obligations under the Term Loans are secured by a mortgage and first priority security interest in our headquarters property. Term Loans made after December 7, 2017 may be used to finance hard and soft costs related to the completion of construction of our fourth headquarters building and any landscaping, groundwork, parking lots and roads reasonably incidental thereto. The Term Loans mature on September 7, 2025. The Term Loans bear interest, at our option, at either (a) a prime rate plus 1.0% or (b) an adjusted LIBOR rate for the interest period in effect for such Term Loan plus 1.5%. Under the Term Credit Agreement, the Company is subject to two material financial covenants, which require the Company to maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0. As of March 31, 2018, the Company was in compliance with these covenants. On February 12, 2018, we entered into a senior secured revolving credit agreement (the “Revolving Credit Agreement”) with JPMorgan Chase Bank, N.A. and Bank of America, N.A. that provides for a senior secured revolving credit facility (the “Facility”) in the aggregate principal amount of $50.0 million, which may be increased to up to $100.0 million. The Facility is scheduled to mature on February 12, 2020. Borrowings under the Facility will generally bear interest at a prime rate plus 1.0% or, at our option, an adjusted LIBOR rate for the interest period in effect for such borrowing plus 1.5%. The proceeds of the loans and letters of credit under the Facility are to be used only for our general business purposes and working capital. Letters of credit are to be issued only to support our business operations. As of March 31, 2018, we have not made any draws under the Facility. Under the Revolving Credit Agreement, the Company is required to maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0. Additionally, the Revolving Credit Agreement contains customary affirmative and negative covenants, including covenants limiting the ability of the Company to, among other things, grant liens, incur debt, effect certain mergers, make investments, dispose of assets, enter into certain transactions, including swap agreements and sale and leaseback transactions, pay dividends or distributions on their capital stock, and enter into transactions with affiliates, in each case subject to customary exceptions for a facility of the size and type of the Facility. As of March 31, 2018 and December 31, 2017, the carrying value of our total long-term debt approximated its fair value as of both dates. The fair value of our long-term debt is estimated based on the borrowing rates currently available to us for bank loans with similar terms and maturities.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments	7. DERIVATIVE INSTRUMENTS In December 2017, the Company entered into a floating-to-fixed interest rate swap agreement to limit the exposure to interest rate risk related to the Term Loans. The Company does not hold derivative instruments for trading or speculative purposes. The interest rate swap effectively converts a portion of the variable interest rate payments to fixed interest rate payments. The Company accounts for its derivatives under ASC Topic 815, Derivatives and Hedging, and records all derivative instruments on the consolidated balance sheets at fair value as either short term or long term assets or liabilities based on their anticipated settlement date. See Note 8, “Fair Value of Financial Instruments”. The Company has elected not to designate its interest rate swap as a hedge; therefore, changes in the fair value of the derivative instrument are being recognized in earnings in the Company’s consolidated statements of income. The objective of the interest rate swap is to reduce the variability in the forecasted interest payments of the Term Loans, which is based on a one-month LIBOR rate versus a fixed interest rate of 2.54% on a notional value of $35.5 million. Under the terms of the interest rate swap agreement, the Company will receive quarterly variable interest payments based on the LIBOR rate and will pay interest at a fixed rate. The swap agreement has a maturity date of September 7, 2025. For the three months ended March 31, 2018, the Company recorded a gain of $0.8 million for the change in fair value of the interest rate swap, which is included in Other income, net in the consolidated statements of income.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	8. FAIR VALUE OF FINANCIAL INSTRUMENTS Our financial instruments consist primarily of cash and cash equivalents, accounts receivable, accounts payable, funds held for clients, client funds obligation and long-term debt. The carrying amount of cash and cash equivalents, accounts receivable, accounts payable, funds held for clients and client fund obligation approximates fair value because of the short-term nature of the instruments. See Note 6 for discussion on the fair value of our debt. As discussed in Note 7, during the year ended December 31, 2017, we entered into an interest rate swap. The interest rate swap is measured on a recurring basis based on quoted prices for similar financial instruments and other observable inputs that approximate fair value. The accounting standard for fair value measurements establishes a three-level fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: • Level 1 – Observable inputs such as quoted prices in active markets • Level 2 – Inputs other than quoted prices in active markets for identical assets or liabilities that are observable either directly or indirectly or quoted prices that are not active • Level 3 – Unobservable inputs in which there is little or no market data Included in the following table are the Company’s major categories of assets (liabilities) measured at fair value on a recurring basis as of March 31, 2018 and December 31, 2017 (dollars in thousands): March 31, 2018 Level 1 Level 2 Level 3 Total Interest rate swap $ — $ 168 $ — $ 168 Total $ — $ 168 $ — $ 168 December 31, 2017 Level 1 Level 2 Level 3 Total Interest rate swap $ — $ (649 ) $ — $ (649 ) Total $ — $ (649 ) $ — $ (649 )

Employee Savings Plan and Emplo

Employee Savings Plan and Employee Stock Purchase Plan	3 Months Ended
	Mar. 31, 2018
Compensation Related Costs [Abstract]
Employee Savings Plan and Employee Stock Purchase Plan	9. EMPLOYEE SAVINGS PLAN AND EMPLOYEE STOCK PURCHASE PLAN Our employees that are over the age of 18 and have completed ninety (90) days of service are eligible to participate in our 401(k) plan. We have made a Qualified Automatic Contribution Arrangement (“QACA”) election, whereby we make a matching contribution for our employees equal to 100% of the first 1% of salary deferrals and 50% of salary deferrals between 2% and 6%, up to a maximum matching contribution of 3.5% of an employee’s salary each plan year. We are allowed to make additional discretionary matching contributions and discretionary profit sharing contributions. Employees are 100% vested in amounts attributable to salary deferrals and rollover contributions. The QACA matching contributions as well as the discretionary matching and profit sharing contributions vest 100% after two years of employment from the date of hire. Matching contributions amounted to $1.4 million and $1.2 million for the three months ended March 31, 2018 and 2017, respectively. The ESPP has overlapping offering periods, with each offering period lasting approximately 24 months. At the beginning of each offering period, eligible employees may elect to contribute, through payroll deductions, up to 10% of their compensation, subject to an annual per employee maximum. Eligible employees purchase shares of the Company’s common stock at a price equal to 85% of the fair market value of the shares on the exercise date. The maximum number of shares that may be purchased by a participant during each offering period is 2,000 shares, subject to limits specified by the Internal Revenue Service. The shares reserved for purposes of the ESPP are shares we purchase in the open market. The maximum aggregate number of shares of the Company’s common stock that may be purchased by all participants under the ESPP is 2,000,000 shares. Eligible employees purchased 24,103 and 32,822 shares of the Company’s common stock under the ESPP during the three months ended March 31, 2018 and 2017, respectively. Compensation expense related to the ESPP is recognized on a straight-line basis over the requisite service period. Our compensation expense related to the ESPP was $0.2 million for each of the three months ended March 31, 2018 and 2017.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	10. EARNINGS PER SHARE Basic earnings per share is based on the weighted average number of shares of common stock outstanding for the period. Diluted earnings per share is computed in a similar manner to basic earnings per share after assuming the issuance of shares of common stock for all potentially dilutive shares of restricted stock whether or not they are vested. In accordance with ASC Topic 260, “Earnings Per Share,” the two-class method determines earnings for each class of common stock and participating securities according to an earnings allocation formula that adjusts the income available to common stockholders for dividends or dividend equivalents and participation rights in undistributed earnings. Certain unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents are participating securities and, therefore, are included in computing earnings per share pursuant to the two-class method. The outstanding shares of restricted stock granted in 2015 are considered participating securities, while all other outstanding shares of restricted stock are not considered participating securities. The following is a reconciliation of net income and the number of shares of common stock used in the computation of basic and diluted earnings per share: Three Months Ended March 31, 2017 2018 *As Adjusted Numerator: Net income $ 41,160 $ 33,694 Less: income allocable to participating securities (100 ) (254 ) Income allocable to common shares $ 41,060 $ 33,440 Add back: undistributed earnings allocable to participating securities $ 100 $ 254 Less: undistributed earnings reallocated to participating securities (98 ) (249 ) Numerator for diluted earnings per share $ 41,062 $ 33,445 Denominator: Weighted average common shares outstanding 50,315,455 50,315,455 Weighted average common shares repurchased (2,408,586 ) (1,122,261 ) Adjustment for vested restricted stock 9,886,154 8,113,993 Shares for calculating basic earnings per share 57,793,023 57,307,187 Dilutive effect of unvested restricted stock 945,709 1,218,793 Shares for calculating diluted earnings per share 58,738,732 58,525,980 Earnings per share: Basic $ 0.71 $ 0.58 Diluted $ 0.70 $ 0.57 * Prior year amounts have been recast to reflect the adoption of ASU 2014-09. See Note 2 for description of adjustments.

Stockholders' Equity and Stock-

Stockholders' Equity and Stock-Based Compensation	3 Months Ended
	Mar. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stockholders' Equity and Stock-Based Compensation	11. STOCKHOLDERS’ EQUITY AND STOCK-BASED COMPENSATION See the Company’s Form 10-K for a detailed description of the Company’s stock-based compensation awards, including information related to vesting terms and service and performance conditions. The following table summarizes restricted stock awards activity for the three months ended March 31, 2018: Time-based Market-Based Restricted Stock Awards Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Unvested shares of restricted stock outstanding at December 31, 2017 888,680 $ 42.17 — $ — Granted 227,243 $ 92.94 284,118 $ 82.84 Vested (14,211 ) $ 0.29 (283,080 ) $ 82.84 Forfeited (19,726 ) $ 47.19 (1,038 ) $ 82.64 Unvested shares of restricted stock outstanding at March 31, 2018 1,081,986 $ 53.29 — $ — On January 26, 2018, we issued an aggregate of 511,361 restricted shares of common stock to our executive officers and certain non-executive, non-sales employees under the Paycom Software, Inc. 2014 Long-Term Incentive Plan (the “LTIP”), consisting of 284,118 shares subject to market-based vesting conditions (“Market-Based Shares”) and 227,243 shares subject to time-based vesting conditions (“Time-Based Shares”). Market-Based Shares will vest 50% on the first date that the Company’s TEV (calculated as defined in the applicable restricted stock award agreement) equals or exceeds $5.9 billion and 50% on the first date that the Company’s TEV equals or exceeds $6.2 billion, in each case provided that (i) such date occurs on or before the sixth anniversary of the grant date and (ii) the recipient is employed by, or providing services to, the Company or a subsidiary on the applicable vesting date. Time-Based Shares granted to non-executive employees will vest 25% on a specified initial vesting date and 25% on each of the first three anniversaries of such initial vesting date, provided that the recipient is employed by, or providing services to, the Company or a subsidiary on the applicable vesting date. Time-Based Shares granted to executive officers will vest in three equal annual tranches beginning on a specified initial vesting date and thereafter on the first and second anniversaries of such date, provided that the executive officer is employed by, or providing services to, the Company or a subsidiary on the applicable vesting date. The following table summarizes market-based stock vesting activity during the three months ended March 31, 2018, the associated compensation cost recognized in connection with the vesting event and the number of shares withheld to satisfy tax withholding obligations: Vesting Condition Date Vested Number of Shares Vested Compensation Cost Recognized Upon Vesting Shares Withheld for Taxes 1 Market-based (TEV = $5.9 billion) March 14, 2018 141,599 $9.7 million 54,000 Market-based (TEV = $6.2 billion) March 23, 2018 141,481 $10.1 million 54,909 1 For the three months ended March 31, 2018 and 2017, respectively, our total compensation expense related to restricted stock was $23.4 million and $3.4 million, as adjusted. There was $45.4 million of unrecognized compensation cost, net of estimated forfeitures, related to unvested shares of restricted stock outstanding as of March 31, 2018. The unrecognized compensation cost for the restricted shares is expected to be recognized over a weighted average period of 2.1 years as of March 31, 2018. We capitalized stock-based compensation costs related to software developed for internal use of $2.5 million and $0.3 million for the three months ended March 31, 2018 and 2017, respectively.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. COMMITMENTS AND CONTINGENCIES Employment Agreements We have employment agreements with certain of our executive officers. The agreements allow for annual compensation, participation in executive benefit plans, and performance-based cash bonuses. Incentive Plan On May 2, 2016, our stockholders approved the Paycom Software, Inc. Annual Incentive Plan (the “Incentive Plan”). The Incentive Plan provides for payment of incentive compensation that is not subject to certain federal income tax deduction limitations. Participation in the Incentive Plan is limited to certain of our employees designated by the Compensation Committee of our Board of Directors. Legal Proceedings We are involved in various legal proceedings in the ordinary course of business. Although we cannot predict the outcome of these proceedings, legal matters are subject to inherent uncertainties and there exists the possibility that the ultimate resolution of these matters could have a material adverse effect on our business, financial condition, results of operations and cash flows. Operating Leases and Deferred Rent Our leases primarily consist of several noncancellable operating leases for office space with contractual terms expiring from 2018 to 2024. Minimum rent expenses are recognized over the lease term. The lease term is defined as the fixed noncancellable term of the lease plus all periods, if any, for which failure to renew the lease imposes a penalty on us in an amount that a renewal appears, at the inception of the lease, to be reasonably assured. When a lease contains a predetermined fixed escalation of the minimum rent, we recognize the related rent expense on a straight-line basis and record the difference between the recognized rent expense and the amount payable under the lease as a liability. We had $1.3 million as of both March 31, 2018 and December 31, 2017, recorded as a liability for deferred rent. Rent expense under operating leases for the three months ended March 31, 2018 and 2017 was $1.8 million and $1.5 million, respectively.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	13. INCOME TAXES The provision for income taxes is based on a current estimate of the annual effective income tax rate adjusted to reflect the impact of discrete items. Significant management judgment is required in estimating operating income in order to determine our effective income tax rate. Our effective income tax rate was 20.92% and 33.48% for the three months ended March 31, 2018 and 2017, respectively. The lower effective tax rate for the three months ended March 31, 2018 is primarily a result of the decrease in the federal corporate tax rate that went into effect in December 2017 with the enactment of the Tax Cuts and Jobs Act of 2017.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	14. SUBSEQUENT EVENTS On April 23, 2018, we issued an aggregate of 92,061 restricted shares of common stock to certain non-executive sales employees under the LTIP consisting of Time-Based Shares. One-third of the Time-Based Shares will vest on a specified initial vesting date, an additional one-third of the Time-Based Shares will vest on the first anniversary of the specified initial vesting date, and the remaining one-third of the Time-Based Shares will vest on the second anniversary of the specified initial vesting date, provided that the recipient is employed by, or providing services to, the Company or a subsidiary thereof on the applicable vesting date. On April 30, 2018, we issued an aggregate of 9,846 shares of restricted stock under the LTIP to the non-employee members of our board of directors. Such shares of restricted stock will cliff-vest on the seventh (7 th st

Summary of Significant Accoun20

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial statements that permit reduced disclosure for interim periods. In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments necessary for the fair presentation of our consolidated balance sheets as of March 31, 2018 and December 31, 2017, our consolidated statements of income for the three months ended March 31, 2018 and 2017 and our consolidated statements of cash flows for the three months ended March 31, 2018 and 2017. Such adjustments are of a normal recurring nature. The information in this Quarterly Report on Form 10-Q (this “Form 10-Q”) should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017 that was filed with the SEC on February 14, 2018 (the “Form 10-K”). The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results expected for the full year. Effective January 1, 2018, we adopted the requirements of Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, as discussed in Note 2. All amounts and disclosures set forth in this Form 10-Q have been updated to comply with the new standards, as indicated by the “as adjusted” footnote.
Recently Adopted New Accounting Pronouncements	Recently Adopted New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (the “FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). This authoritative guidance includes a comprehensive new revenue recognition model that requires revenue to be recognized in a manner to depict the transfer of goods or services to a customer at an amount that reflects the consideration expected to be received in exchange for those goods or services. ASU 2014-09 also includes Accounting Standards Codification (“ASC”) 340-40, “Other Assets and Deferred Costs – Contracts with Customers” (“ASC 340-40”), which codifies the guidance on other assets and deferred costs relating to Impacts to Previously Reported Results The provisions of ASU 2014-19 do not materially impact the timing or amount of revenue we recognize. The primary impact of adopting the new standard is the manner in which we account for certain costs to obtain new contracts (i.e., selling and commission costs) and costs to fulfill contracts (i.e., costs related to upfront implementation activities performed), which we had previously expensed as incurred. We also determined that the nonrefundable upfront fee charged to our clients, coupled with the option to renew, represents an implied performance obligation in the form of a material right. However, as these fees are deferred and recognized ratably over the ten-year estimated client life, consistent with our prior accounting policy, there is no change in revenue recognition. See Note 3 for further details. The following table presents a recast of selected unaudited consolidated statement of income line items after giving effect to the adoption of ASU 2014-09 (dollars in thousands, except per share amounts): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Administrative expenses Sales and marketing $ 36,848 $ (11,269 ) $ 25,579 General and administrative $ 17,826 $ (2,576 ) $ 15,250 Operating income $ 38,665 $ 13,845 $ 52,510 Provision for income taxes $ 12,889 $ 5,765 $ 18,654 Net income $ 25,614 $ 8,080 $ 33,694 Earnings per share, basic $ 0.44 $ 0.14 $ 0.58 Earnings per share, diluted $ 0.43 $ 0.14 $ 0.57 The following table presents a recast of selected unaudited consolidated balance sheet line items after giving effect to the adoption of ASU 2014-09 (in thousands): December 31, 2017 As previously reported Adjustments As Adjusted Assets Deferred contract costs $ — $ 26,403 $ 26,403 Deferred income tax assets, net $ 3,294 $ (3,294 ) $ — Long-term deferred contract costs $ — $ 171,865 $ 171,865 Liabilities and Stockholders' Equity Deferred income tax liabilities, net $ — $ 49,129 $ 49,129 Additional paid-in capital $ 137,234 $ 24,575 $ 161,809 Retained earnings $ 137,255 $ 121,270 $ 258,525 The following table presents a recast of selected unaudited consolidated statement of cash flow line items after giving effect to the adoption of ASU 2014-09 (in thousands): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Cash flows from operating activities Net income $ 25,614 $ 8,080 $ 33,694 Stock-based compensation expense $ 3,625 $ (282 ) $ 3,343 Deferred income taxes, net $ (4,480 ) $ 5,765 $ 1,285 Deferred contract costs $ — $ (13,563 ) $ (13,563 ) Net cash provided by operating activities $ 40,225 $ — $ 40,225
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates include income taxes, contingencies, the useful life of property and equipment and intangible assets, the life of our client relationships, the fair value of our stock-based awards and the fair value of our financial instruments, intangible assets and goodwill. These estimates are based on historical experience where applicable and other assumptions that management believes are reasonable under the circumstances. As such, actual results could materially differ from these estimates.
Seasonality	Seasonality Our revenues are seasonal in nature. Recurring revenues include revenues relating to the annual processing of payroll forms, such as Form W-2, Form 1099, and Form 1095 and revenues from processing unscheduled payroll runs (such as bonuses) for our clients. Because payroll forms are typically processed in the first quarter of the year, first quarter revenues and margins are generally higher than in subsequent quarters. These seasonal fluctuations in revenues can also have an impact on gross profits. Historical results impacted by these seasonal trends should not be considered a reliable indicator of our future results of operations.
Employee Stock Purchase Plan	Employee Stock Purchase Plan An award issued under the Paycom Software, Inc. Employee Stock Purchase Plan (the “ESPP”) is classified as a share-based liability and recorded at the fair value of the award. Expense is recognized, net of estimated forfeitures, on a straight-line basis over the requisite service period.
Funds Held for Clients and Client Funds Obligation	Funds Held for Clients and Client Funds Obligation As part of our payroll and tax filing application, we (i) collect client funds to satisfy their respective federal, state and local employment tax obligations, (ii) remit such funds to the appropriate taxing authorities and accounts designated by our clients, and (iii) manage client tax filings and any related correspondence with taxing authorities. Amounts collected by us from clients for their federal, state and local employment taxes are invested by us, and we earn interest on these funds during the interval between receipt and disbursement. These investments are shown in our consolidated balance sheets as funds held for clients, and the offsetting liability for the tax filings is shown as client funds obligation. The liability is recorded in the accompanying balance sheets at the time we obtain the funds from clients. The client funds obligation represents liabilities that will be repaid within one year of the balance sheet date. As of March 31, 2018 and December 31, 2017, the funds held for clients were invested in money market funds, demand deposit accounts, commercial paper and certificates of deposit. These investments are shown in the consolidated balance sheets as funds held for clients and are classified as a current asset because the funds are held solely to satisfy the client funds obligation.
Stock Repurchase Plan	Stock Repurchase Plan On February 8, 2017, we announced that our Board of Directors amended and extended our stock repurchase plan originally announced on May 26, 2016, such that we were authorized to purchase (in the aggregate) up to an additional $50.0 million of common stock through January 2019. On October 30, 2017, our Board of Directors again amended and extended our stock repurchase plan, such that we are authorized to purchase (in the aggregate) up to an additional $75 million of common stock over a 24-month period. Our stock repurchase plan will expire on October 30, 2019. On February 13, 2018, we announced that our Board of Directors further amended and extended our stock repurchase plan, such that we are authorized to purchase up to an additional $100.0 million of common stock. Our stock repurchase plan will expire on February 12, 2020. According to the terms of our stock repurchase plan, shares may be repurchased from time to time in open market transactions at prevailing market prices, in privately negotiated transactions or by other means in accordance with federal securities laws, including Rule 10b5-1 programs. Our stock repurchase plan may be suspended or discontinued at any time. The actual timing, number and value of shares repurchased depends on a number of factors, including the market price of our common stock, general market and economic conditions, the net-downs associated with the vesting of restricted stock and other corporate considerations. During the three months ended March 31, 2018, we repurchased an aggregate of 169,146 shares of our common stock at an average cost of $99.74 per share, including 108,909 shares withheld to satisfy tax withholding obligations for certain employees upon the vesting of restricted common stock.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842).” The purpose of this new guidance is to increase the transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet as well as providing additional disclosure requirements related to leasing arrangements. The new guidance is effective for us beginning January 1, 2019. We are in the process of evaluating and planning for the adoption and implementation of the new standard, including evaluating practical expedient and accounting policy elections and determining the impact to our systems and processes that we use to account for leases. We are also still in the process of completing our assessment of the overall impact to our consolidated financial statements; however, we anticipate that most of our operating lease commitments will be subject to the new guidance, resulting in a significant increase in the total assets and liabilities reported on the Company’s consolidated balance sheets.

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Reflection of New Adopted Standards in Selected Consolidated Statements Line Items	The following table presents a recast of selected unaudited consolidated statement of income line items after giving effect to the adoption of ASU 2014-09 (dollars in thousands, except per share amounts): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Administrative expenses Sales and marketing $ 36,848 $ (11,269 ) $ 25,579 General and administrative $ 17,826 $ (2,576 ) $ 15,250 Operating income $ 38,665 $ 13,845 $ 52,510 Provision for income taxes $ 12,889 $ 5,765 $ 18,654 Net income $ 25,614 $ 8,080 $ 33,694 Earnings per share, basic $ 0.44 $ 0.14 $ 0.58 Earnings per share, diluted $ 0.43 $ 0.14 $ 0.57 The following table presents a recast of selected unaudited consolidated balance sheet line items after giving effect to the adoption of ASU 2014-09 (in thousands): December 31, 2017 As previously reported Adjustments As Adjusted Assets Deferred contract costs $ — $ 26,403 $ 26,403 Deferred income tax assets, net $ 3,294 $ (3,294 ) $ — Long-term deferred contract costs $ — $ 171,865 $ 171,865 Liabilities and Stockholders' Equity Deferred income tax liabilities, net $ — $ 49,129 $ 49,129 Additional paid-in capital $ 137,234 $ 24,575 $ 161,809 Retained earnings $ 137,255 $ 121,270 $ 258,525 The following table presents a recast of selected unaudited consolidated statement of cash flow line items after giving effect to the adoption of ASU 2014-09 (in thousands): Three Months Ended March 31, 2017 As previously reported Adjustments As Adjusted Cash flows from operating activities Net income $ 25,614 $ 8,080 $ 33,694 Stock-based compensation expense $ 3,625 $ (282 ) $ 3,343 Deferred income taxes, net $ (4,480 ) $ 5,765 $ 1,285 Deferred contract costs $ — $ (13,563 ) $ (13,563 ) Net cash provided by operating activities $ 40,225 $ — $ 40,225

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue From Contract With Customer [Abstract]
Summary of Disaggregates Major Categories of Revenues	. The following table, consistent with our Consolidated Statements of Income, disaggregates revenue by recurring and implementation and other revenue which we believe represents the major categories of revenues (in thousands): Three Months Ended March 31, 2018 2017 Revenues Recurring $ 151,885 $ 117,914 Implementation and other 2,031 1,594 Total revenues $ 153,916 $ 119,508
Summary of Changes in Deferred Revenue Related to Material Right Performance Obligations	Changes in deferred revenue related to material right performance obligations were as follows (in thousands): Three Months Ended March 31, 2018 Balance, beginning of period $ 51,624 Deferral of revenue 3,943 Recognition of unearned revenue (1,790 ) Balance, end of period $ 53,777
Summary of Asset Balances and Related Amortization Expense For Contract Costs	The following table presents the asset balances and related amortization expense for these contract costs (in thousands): As of and for the Three Months Ended March 31, 2018 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 126,207 $ 15,122 $ (4,418 ) $ 136,911 Costs to fulfill a contract $ 72,061 $ 11,043 $ (2,515 ) $ 80,589

Property and Equipment , Net (T

Property and Equipment , Net (Tables)	3 Months Ended
	Mar. 31, 2018
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment and Associated Accumulated Depreciation and Amortization	Property and equipment and accumulated depreciation and amortization were as follows: March 31, December 31, 2018 2017 Property and equipment Buildings $ 60,647 $ 60,441 Software and capitalized software costs 49,404 41,996 Computer equipment 30,525 27,928 Rental clocks 13,627 13,131 Furniture, fixtures and equipment 7,776 7,528 Leasehold improvements 779 767 Vehicles 50 — 162,808 151,791 Less: accumulated depreciation and amortization (59,540 ) (53,525 ) 103,268 98,266 Construction in progress 47,280 40,446 Land 9,013 8,993 Property and equipment, net $ 159,561 $ 147,705

Goodwill and Intangible Asset24

Goodwill and Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Components of Intangible Assets	All of our intangible assets other than goodwill are considered to have finite lives and, as such, are subject to amortization. The following tables provide the components of intangible assets: March 31, 2018 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 4.3 3,194 (2,289 ) 905 Total $ 3,194 $ (2,289 ) $ 905 December 31, 2017 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 4.5 3,194 (2,236 ) 958 Total $ 3,194 $ (2,236 ) $ 958

Long-Term Debt, Net (Tables)

Long-Term Debt, Net (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	As of the dates indicated, our long-term debt consisted of the following: March 31, 2018 December 31, 2017 Net term note to bank due September 7, 2025 $ 35,266 $ 35,302 Total long-term debt (including current portion) 35,266 35,302 Less: Current portion (1,331 ) (888 ) Total long-term debt, net $ 33,935 $ 34,414

Fair Value of Financial Instr26

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Major Categories of Assets / (Liabilities) Measured at Fair Value on Recurring Basis	Included in the following table are the Company’s major categories of assets (liabilities) measured at fair value on a recurring basis as of March 31, 2018 and December 31, 2017 (dollars in thousands): March 31, 2018 Level 1 Level 2 Level 3 Total Interest rate swap $ — $ 168 $ — $ 168 Total $ — $ 168 $ — $ 168 December 31, 2017 Level 1 Level 2 Level 3 Total Interest rate swap $ — $ (649 ) $ — $ (649 ) Total $ — $ (649 ) $ — $ (649 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following is a reconciliation of net income and the number of shares of common stock used in the computation of basic and diluted earnings per share: Three Months Ended March 31, 2017 2018 *As Adjusted Numerator: Net income $ 41,160 $ 33,694 Less: income allocable to participating securities (100 ) (254 ) Income allocable to common shares $ 41,060 $ 33,440 Add back: undistributed earnings allocable to participating securities $ 100 $ 254 Less: undistributed earnings reallocated to participating securities (98 ) (249 ) Numerator for diluted earnings per share $ 41,062 $ 33,445 Denominator: Weighted average common shares outstanding 50,315,455 50,315,455 Weighted average common shares repurchased (2,408,586 ) (1,122,261 ) Adjustment for vested restricted stock 9,886,154 8,113,993 Shares for calculating basic earnings per share 57,793,023 57,307,187 Dilutive effect of unvested restricted stock 945,709 1,218,793 Shares for calculating diluted earnings per share 58,738,732 58,525,980 Earnings per share: Basic $ 0.71 $ 0.58 Diluted $ 0.70 $ 0.57 * Prior year amounts have been recast to reflect the adoption of ASU 2014-09. See Note 2 for description of adjustments.

Stockholders' Equity and Stoc28

Stockholders' Equity and Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2018
Summary of Nonvested Restricted Stock Awards Activity	The following table summarizes restricted stock awards activity for the three months ended March 31, 2018: Time-based Market-Based Restricted Stock Awards Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Unvested shares of restricted stock outstanding at December 31, 2017 888,680 $ 42.17 — $ — Granted 227,243 $ 92.94 284,118 $ 82.84 Vested (14,211 ) $ 0.29 (283,080 ) $ 82.84 Forfeited (19,726 ) $ 47.19 (1,038 ) $ 82.64 Unvested shares of restricted stock outstanding at March 31, 2018 1,081,986 $ 53.29 — $ —
Market-based Stock [Member]
Summary of Market-based Stock Vesting Activity	The following table summarizes market-based stock vesting activity during the three months ended March 31, 2018, the associated compensation cost recognized in connection with the vesting event and the number of shares withheld to satisfy tax withholding obligations: Vesting Condition Date Vested Number of Shares Vested Compensation Cost Recognized Upon Vesting Shares Withheld for Taxes 1 Market-based (TEV = $5.9 billion) March 14, 2018 141,599 $9.7 million 54,000 Market-based (TEV = $6.2 billion) March 23, 2018 141,481 $10.1 million 54,909 1

Summary of Significant Accoun29

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	Feb. 13, 2018	Oct. 30, 2017	Feb. 08, 2017	Mar. 31, 2018	Jan. 01, 2016
Summary Of Significant Accounting Policy [Line Items]
Expected life of client relationships				10 years
Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Stock repurchase plan expiration date	Feb. 12, 2020	Oct. 30, 2019	Jan. 31, 2019
Stock repurchase plan period		24 months
Number of common stocks repurchased during the period				169,146
Stock repurchased, average costs per share				$ 99.74
Stock Repurchase Plan [Member] | Restricted Stock [Member]
Summary Of Significant Accounting Policy [Line Items]
Shares withheld to satisfy tax withholding obligations				108,909
Maximum [Member] | Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Stock repurchase plan, authorized amount	$ 100,000,000	$ 75,000,000	$ 50,000,000
Accounting Standards Update 2014-09 [Member]
Summary Of Significant Accounting Policy [Line Items]
Cumulative adjustment to stockholders’ equity					$ 103,400,000

Summary of Significant Accoun30

Summary of Significant Accounting Policies - Summary of Reflection of New Adopted Standards in Selected Consolidated Statement of Operations Line Items (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Administrative expenses
Sales and marketing	$ 32,352	$ 25,579
General and administrative	32,657	15,250
Operating income	51,020	52,510
Provision for income taxes	10,890	18,654
Net income	$ 41,160	$ 33,694
Earnings per share, basic	$ 0.71	$ 0.58
Earnings per share, diluted	$ 0.70	$ 0.57
As Previously Reported [Member]
Administrative expenses
Sales and marketing		$ 36,848
General and administrative		17,826
Operating income		38,665
Provision for income taxes		12,889
Net income		$ 25,614
Earnings per share, basic		$ 0.44
Earnings per share, diluted		$ 0.43
Adjustments [Member]
Administrative expenses
Sales and marketing		$ (11,269)
General and administrative		(2,576)
Operating income		13,845
Provision for income taxes		5,765
Net income		$ 8,080
Earnings per share, basic		$ 0.14
Earnings per share, diluted		$ 0.14

Summary of Significant Accoun31

Summary of Significant Accounting Policies - Summary of Reflection of New Adopted Standards in Selected Consolidated Balance Sheet Line Items (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Deferred contract costs	$ 28,920	$ 26,403
Long-term deferred contract costs	188,580	171,865
Liabilities and Stockholders' Equity
Deferred income tax liabilities, net		49,129
Additional paid-in capital	189,302	161,809
Retained earnings	$ 299,685	258,525
As Previously Reported [Member]
Assets
Deferred income tax assets, net		3,294
Liabilities and Stockholders' Equity
Additional paid-in capital		137,234
Retained earnings		137,255
Adjustments [Member]
Assets
Deferred contract costs		26,403
Deferred income tax assets, net		(3,294)
Long-term deferred contract costs		171,865
Liabilities and Stockholders' Equity
Deferred income tax liabilities, net		49,129
Additional paid-in capital		24,575
Retained earnings		$ 121,270

Summary of Significant Accoun32

Summary of Significant Accounting Policies - Summary of Reflection of New Adopted Standards in Selected Consolidated Statement of Cash Flow (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income	$ 41,160	$ 33,694
Deferred income taxes, net	4,272	1,285
Deferred contract costs	(17,712)	(13,563)
Stock-based compensation expense	23,222	3,343
Net cash provided by operating activities	$ 57,664	40,225
As Previously Reported [Member]
Cash flows from operating activities
Net income		25,614
Deferred income taxes, net		(4,480)
Stock-based compensation expense		3,625
Net cash provided by operating activities		40,225
Adjustments [Member]
Cash flows from operating activities
Net income		8,080
Deferred income taxes, net		5,765
Deferred contract costs		(13,563)
Stock-based compensation expense		$ (282)

Revenue - Summary of Disaggrega

Revenue - Summary of Disaggregates Major Categories of Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Recurring	$ 151,885	$ 117,914
Implementation and other	2,031	1,594
Total revenues	$ 153,916	$ 119,508

Revenue - Additional Informatio

Revenue - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2018-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Deferred revenue expect to recognize amount	$ 5.5
Deferred revenue expect to recognize period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Deferred revenue expect to recognize amount	$ 7.4
Deferred revenue expect to recognize period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue practical expedient remaining performance obligation description	We have elected to apply the practical expedient not to disclose the value of unsatisfied performance obligations for contracts that are less than one year in length. However, this expedient cannot be applied to initial 30-day contracts with a client that also contain an implied performance obligation in the form of a material right as the material right performance obligation is being recognized over the expected client life which exceeds one year
Revenue practical expedient performance obligation estimated client life	10 years
Deferred revenue expect to recognize amount	$ 40.9
Deferred revenue expect to recognize description	We expect to recognize $5.5 million of the above deferred revenue amount in 2018, $7.4 million in 2019, and $40.9 million thereafter

Revenue - Summary of Changes in

Revenue - Summary of Changes in Deferred Revenue Related to Material Right Performance Obligations (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Revenue From Contract With Customer [Abstract]
Balance, beginning of period	$ 51,624
Deferral of revenue	3,943
Recognition of unearned revenue	(1,790)
Balance, end of period	$ 53,777

Revenue - Summary of Asset Bala

Revenue - Summary of Asset Balances and Related Amortization Expense For Contract Costs (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Costs to Obtain a Contract [Member]
Capitalized Contract Cost [Line Items]
Beginning Balance	$ 126,207
Capitalization of Costs	15,122
Amortization	(4,418)
Ending Balance	136,911
Costs to Fulfill a Contract [Member]
Capitalized Contract Cost [Line Items]
Beginning Balance	72,061
Capitalization of Costs	11,043
Amortization	(2,515)
Ending Balance	$ 80,589

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment and Associated Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property and Equipment [Line Items]
Property and equipment, gross	$ 162,808	$ 151,791
Less: accumulated depreciation and amortization	(59,540)	(53,525)
Property and equipment, net	159,561	147,705
Buildings [Member]
Property and Equipment [Line Items]
Property and equipment, gross	60,647	60,441
Software and Capitalized Software Costs [Member]
Property and Equipment [Line Items]
Property and equipment, gross	49,404	41,996
Computer Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	30,525	27,928
Rental Clocks [Member]
Property and Equipment [Line Items]
Property and equipment, gross	13,627	13,131
Furniture, Fixtures and Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	7,776	7,528
Leasehold Improvements [Member]
Property and Equipment [Line Items]
Property and equipment, gross	779	767
Vehicles [Member]
Property and Equipment [Line Items]
Property and equipment, gross	50
Excluded Land and Construction in Process [Member]
Property and Equipment [Line Items]
Property and equipment, net	103,268	98,266
Land [Member]
Property and Equipment [Line Items]
Property and equipment, net	9,013	8,993
Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	$ 47,280	$ 40,446

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Property and Equipment [Line Items]
Computer software development costs capitalized	$ 6,600	$ 2,900
Retainage amount included in construction in progress	1,600	2,000
Interest cost Paid	400	400
Interest Costs Capitalized	400	100
Depreciation and amortization	3,032	2,226
Property and Equipment [Member]
Property and Equipment [Line Items]
Depreciation and amortization	$ 6,000	$ 3,900

Goodwill and Intangible Asset39

Goodwill and Intangible Assets, Net - Additional Information (Detail) - USD ($)	Jun. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill		$ 51,889,000		$ 51,889,000
Goodwill impairment amount	$ 0	$ 0		$ 0
Weighted average remaining useful life		4 years 3 months 18 days
Amortization of intangible assets		$ 100,000	$ 400,000

Goodwill and Intangible Asset40

Goodwill and Intangible Assets, Net - Components of Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Weighted average remaining useful life	4 years 3 months 18 days
Gross	$ 3,194	$ 3,194
Accumulated Amortization	(2,289)	(2,236)
Net	$ 905	$ 958
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Weighted average remaining useful life	4 years 3 months 19 days	4 years 6 months
Gross	$ 3,194	$ 3,194
Accumulated Amortization	(2,289)	(2,236)
Net	$ 905	$ 958

Long-Term Debt, Net - Schedule

Long-Term Debt, Net - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Capitalization Longterm Debt [Line Items]
Total long-term debt (including current portion)	$ 35,266	$ 35,302
Less: Current portion	(1,331)	(888)
Total long-term debt, net	33,935	34,414
2025 Consolidated Loan [Member]
Schedule Of Capitalization Longterm Debt [Line Items]
Term note to bank	$ 35,266	$ 35,302

Long-Term Debt, Net - Additiona

Long-Term Debt, Net - Additional Information (Detail) - USD ($)	Feb. 12, 2018	Dec. 07, 2017	Mar. 31, 2018	Dec. 31, 2017
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Loan, principal amount	$ 50,000,000
Debt instrument, restrictive covenants			maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0.
Line of credit facility agreement date	Feb. 12, 2018
Line of credit facility, maximum borrowing capacity	$ 100,000,000
Line of credit facility, maturity date	Feb. 12, 2020
Line of credit facility, interest rate description			Borrowings under the Facility will generally bear interest at a prime rate plus 1.0% or, at our option, an adjusted LIBOR rate for the interest period in effect for such borrowing plus 1.5%.
Line of credit facility, drawn amount	$ 0
Revolving Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio required by covenants			125.00%
Revolving Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Funded indebtedness to EBITDA ratio required by covenants			100.00%
Revolving Credit Agreement [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, outstanding borrowings interest	1.00%
Revolving Credit Agreement [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Line of credit facility, outstanding borrowings interest	1.50%
New Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, restrictive covenants			maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0.
New Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio required by covenants			125.00%
New Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Funded indebtedness to EBITDA ratio required by covenants			100.00%
New Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument maturity date		Sep. 7, 2025
Term loan, maturity date description			The Term Loans mature on September 7, 2025. The Term Loans bear interest, at our option, at either (a) a prime rate plus 1.0% or (b) an adjusted LIBOR rate for the interest period in effect for such Term Loan plus 1.5%.
New Credit Agreement [Member] | Term Loan [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate		1.00%
New Credit Agreement [Member] | Term Loan [Member] | Adjusted London Interbank Offered Rate LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate		1.50%
New Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Loan, principal amount		$ 60,000,000
Unamortized debt issuance cost			$ 200,000	$ 200,000
Remaining borrowing capacity			$ 24,500,000

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Details) - Term Loan [Member] - Interest Rate Swap [Member] $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Derivative [Line Items]
Debt instrument maturity date	Sep. 7, 2025
Description of variable rate basis	one-month LIBOR
Debt Instrument, Interest Rate, Stated Percentage	2.54%
Derivative Instrument, notional value	$ 35.5
Interest rate payment description	The objective of the interest rate swap is to reduce the variability in the forecasted interest payments of the Term Loans, which is based on a one-month LIBOR rate versus a fixed interest rate of 2.54% on a notional value of $35.5 million. Under the terms of the interest rate swap agreement, the Company will receive quarterly variable interest payments based on the LIBOR rate and will pay interest at a fixed rate
Derivative instrument gain under fair value	$ 0.8

Fair Value of Financial Instr44

Fair Value of Financial Instruments - Schedule of Major Categories of Assets / (Liabilities) Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap	$ 168
Interest rate swap		$ (649)
Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap	168
Interest rate swap		(649)
Interest Rate Swap [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap	168
Interest rate swap		(649)
Interest Rate Swap [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap	$ 168
Interest rate swap		$ (649)

Employee Savings Plan and Emp45

Employee Savings Plan and Employee Stock Purchase Plan - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
401(k) eligibility minimum service period	90 days
401(k) description of plan contributions	contribution for our employees equal to 100% of the first 1% of salary deferrals and 50% of salary deferrals between 2% and 6%, up to a maximum matching contribution of 3.5% of an employee’s salary each plan year.
Employee vested percentage in salary deferrals and roll over contributions	100.00%
Minimum period for vesting 100% contributions	2 years
Minimum period for vesting of discretionary contributions	2 years
Matching contribution amount	$ 1.4	$ 1.2
Employee stock purchase plan overlapping offering period	24 months
Employee Stock Purchase Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employees Company's common stock shares purchase limit percentage	10.00%
Maximum number of shares that may be purchased by a participant	2,000
Share of common stock purchase maximum	2,000,000
Purchase of shares of common stock	24,103	32,822
Compensation expense related to ESPP	$ 0.2	$ 0.2
After Two Years Of Employment [Member]
Defined Contribution Plan Disclosure [Line Items]
Matching contributions, vesting percentage	100.00%
One Hundred Percent Match For Percent Of Participants Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer contribution percentage	100.00%
Percentage of salary deferrals	1.00%
50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer contribution percentage	50.00%
Minimum [Member]
Defined Contribution Plan Disclosure [Line Items]
401(k) eligible age of employee	18 years
Minimum [Member] | 50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals	2.00%
Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals	3.50%
Maximum [Member] | Employee Stock Purchase Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Purchase price of common stock expressed as a percentage of its fair market value	85.00%
Maximum [Member] | 50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals	6.00%

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net income	$ 41,160	$ 33,694
Less: income allocable to participating securities	(100)	(254)
Income allocable to common shares	41,060	33,440
Add back: undistributed earnings allocable to participating securities	100	254
Less: undistributed earnings reallocated to participating securities	(98)	(249)
Numerator for diluted earnings per share	$ 41,062	$ 33,445
Denominator:
Weighted average common shares outstanding	50,315,455	50,315,455
Weighted average common shares repurchased	(2,408,586)	(1,122,261)
Adjustment for vested restricted stock	9,886,154	8,113,993
Shares for calculating basic earnings per share	57,793,023	57,307,187
Dilutive effect of unvested restricted stock	945,709	1,218,793
Shares for calculating diluted earnings per share	58,738,732	58,525,980
Earnings per share:
Earnings per share, basic	$ 0.71	$ 0.58
Earnings per share, diluted	$ 0.70	$ 0.57

Stockholders' Equity and Stoc47

Stockholders' Equity and Stock-Based Compensation - Summary of Nonvested Restricted Stock Awards Activity (Detail)	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Time-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unvested shares of restricted stock outstanding at beginning of period | shares	888,680
Restricted stock awards granted | shares	227,243
Restricted stock awards vested | shares	(14,211)
Restricted stock awards forfeited | shares	(19,726)
Unvested shares of restricted stock outstanding at end of period | shares	1,081,986
Unvested shares of restricted stock outstanding, Weighted Average Grant Date Fair Value, at beginning of period | $ / shares	$ 42.17
Granted, Weighted-Average Grant Date Fair Value | $ / shares	92.94
Vested, Weighted-Average Grant Date Fair Value | $ / shares	0.29
Forfeited, Weighted-Average Grant Date Fair Value | $ / shares	47.19
Unvested shares of restricted stock outstanding, Weighted Average Grant Date Fair Value, at end of period | $ / shares	$ 53.29
Market-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted stock awards granted | shares	284,118
Restricted stock awards vested | shares	(283,080)
Restricted stock awards forfeited | shares	(1,038)
Granted, Weighted-Average Grant Date Fair Value | $ / shares	$ 82.84
Vested, Weighted-Average Grant Date Fair Value | $ / shares	82.84
Forfeited, Weighted-Average Grant Date Fair Value | $ / shares	$ 82.64

Stockholders' Equity and Stoc48

Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	Jan. 26, 2018	Mar. 31, 2018	Mar. 31, 2017
Software and Capitalized Software Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Capitalized compensation cost		$ 2.5	$ 0.3
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation expense related to ESPP		23.4	$ 3.4
Total unrecognized compensation cost related to unvested restricted stock		$ 45.4
Unrecognized compensation expected to be recognized		2 years 1 month 6 days
Restricted Stock [Member] | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights	first three anniversaries
Restricted Stock [Member] | Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights	three equal annual tranches beginning on a specified initial vesting date and thereafter on the first and second anniversaries
Restricted Stock [Member] | Market-based Vesting Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of shares vested	284,118
Restricted Stock [Member] | vest 50% on the first date that the Company’s TEV (calculated as defined in the applicable restricted stock award agreement) equals or exceeds $5.9 billion [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Market-based vesting percentage, restricted shares	50.00%
Total enterprise value	$ 5,900
Restricted Stock [Member] | Time-based Vesting Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of shares vested	227,243
Restricted Stock [Member] | Vest 50% on the first date that the Company’s TEV equals or exceeds $6.2 billion [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Market-based vesting percentage, restricted shares	50.00%
Total enterprise value	$ 6,200
Restricted Stock [Member] | Tranche One [Member] | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Market-based vesting percentage, restricted shares	25.00%
Restricted Stock [Member] | Tranche Two [Member] | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Market-based vesting percentage, restricted shares	25.00%
Restricted Stock [Member] | LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued	511,361

Stockholders' Equity and Stoc49

Stockholders' Equity and Stock-Based Compensation - Summary of Market-based Stock Vesting Activity (Detail) - Market-based Stock [Member] - Market-based [Member] $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)shares
Vest Date March 14, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Date Vested	Mar. 14, 2018
Number of Shares Vested	141,599
Compensation Cost Recognized Upon Vesting | $	$ 9.7
Shares withheld to satisfy tax withholding obligations	54,000
Vest Date March 23, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Date Vested	Mar. 23, 2018
Number of Shares Vested	141,481
Compensation Cost Recognized Upon Vesting | $	$ 10.1
Shares withheld to satisfy tax withholding obligations	54,909

Stockholders' Equity and Stoc50

Stockholders' Equity and Stock-Based Compensation - Summary of Market-based Stock Vesting Activity (Parenthetical) (Detail) - Market-based Stock [Member] - Market-based [Member] $ in Billions	Mar. 31, 2018USD ($)
Vest Date March 14, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
TEV	$ 5.9
Vest Date March 23, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
TEV	$ 6.2

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Other Commitments [Line Items]
Liability for deferred rent	$ 1.3		$ 1.3
Operating lease rent expense	$ 1.8	$ 1.5
Minimum [Member]
Other Commitments [Line Items]
Operating lease expiration year	2,018
Maximum [Member]
Other Commitments [Line Items]
Operating lease expiration year	2,024

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	20.92%	33.48%

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - shares	Apr. 30, 2018	Apr. 23, 2018	Jan. 26, 2018
Subsequent Event [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights		One-third of the Time-Based Shares will vest on a specified initial vesting date, an additional one-third of the Time-Based Shares will vest on the first anniversary of the specified initial vesting date, and the remaining one-third of the Time-Based Shares will vest on the second anniversary of the specified initial vesting date
Restricted Stock [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights			first three anniversaries
Restricted Stock [Member] | Tranche One [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			25.00%
Restricted Stock [Member] | Tranche Two [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			25.00%
Restricted Stock [Member] | LTIP [Member]
Subsequent Event [Line Items]
Restricted shares of common stock issued			511,361
Restricted Stock [Member] | Subsequent Event [Member] | Tranche One [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares		33.33%
Restricted Stock [Member] | Subsequent Event [Member] | Tranche Two [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares		33.33%
Restricted Stock [Member] | Subsequent Event [Member] | Tranche Three [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares		33.33%
Restricted Stock [Member] | Subsequent Event [Member] | LTIP [Member]
Subsequent Event [Line Items]
Restricted shares of common stock issued	9,846
Restricted Stock [Member] | Subsequent Event [Member] | LTIP [Member] | Non Executive Employees [Member]
Subsequent Event [Line Items]
Restricted shares of common stock issued		92,061