10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended June 30, 2017

¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from to

Commission File Number: 001-32358

SPOK HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	16-1694797
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

6850 Versar Center, Suite 420
Springfield, Virginia	22151-4148
(Address of principal executive offices)	(Zip Code)

(800) 611-8488

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨
		Emerging growth company	¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Securities Act.			¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

19,977,318 shares of the registrant’s common stock ($0.0001 par value per share) were outstanding as of July 21, 2017.

SPOK HOLDINGS, INC.

QUARTERLY REPORT ON FORM 10-Q

INDEX

			Page
PART I.	FINANCIAL INFORMATION
	Item 1.	Condensed Consolidated Financial Statements
		Condensed Consolidated Balance Sheets as of June 30, 2017 (Unaudited) and December 31, 2016	2
		Condensed Consolidated Statements of Income for the Three and Six Months Ended June 30, 2017 and 2016 (Unaudited)	3
		Condensed Consolidated Statements of Cash Flows for the Six Months Ended   June 30, 2017 and 2016 (Unaudited)	4
		Unaudited Notes to Condensed Consolidated Financial Statements	5
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	15
	Item 3.	Quantitative and Qualitative Disclosures about Market Risk	28
	Item 4.	Controls and Procedures	29
PART II.	OTHER INFORMATION
	Item 1.	Legal Proceedings	30
	Item 1A.	Risk Factors	30
	Item 2.	Unregistered Sales of Equity Securities and the Use of Proceeds	30
	Item 5.	Other Matters	31
	Item 6.	Exhibits	31
Signatures

PART I. FINANCIAL INFORMATION

ITEM 1.CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

SPOK HOLDINGS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands)	June 30, 2017		December 31, 2016
ASSETS	(Unaudited)
Current assets:
Cash and cash equivalents	$	107,151	$	125,816
Accounts receivable, net	24,452		23,666
Prepaid expenses and other	7,669		4,384
Inventory	1,642		1,996
Total current assets	140,914		155,862
Non-current assets:
Property and equipment, net	13,889		12,818
Goodwill	133,031		133,031
Intangible assets, net	9,166		10,803
Deferred income tax assets	72,018		73,068
Other non-current assets	2,204		2,505
Total non-current assets	230,308		232,225
TOTAL ASSETS	$	371,222	$	388,087
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	1,554	$	1,909
Accrued compensation and benefits	11,310		13,268
Accrued dividends payable	342		5,140
Accrued taxes	2,658		4,132
Deferred revenue	31,807		29,145
Other current liabilities	2,820		2,733
Total current liabilities	50,491		56,327
Non-current liabilities:
Deferred revenue	651		752
Other non-current liabilities	8,570		8,921
Total non-current liabilities	9,221		9,673
TOTAL LIABILITIES	59,712		66,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock	—		—
Common stock	2		2
Additional paid-in capital	96,943		104,810
Retained earnings	214,565		217,275
TOTAL STOCKHOLDERS’ EQUITY	311,510		322,087
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	371,222	$	388,087

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

2

SPOK HOLDINGS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Unaudited and in thousands except share and per share amounts)	2017			2016			2017			2016
Revenue:
Wireless	$	25,639		$	27,859		$	51,499		$	56,031
Software	16,686			16,776			32,270			33,992
Total revenue	42,325			44,635			83,769			90,023
Operating expenses:
Cost of revenue	7,190			7,513			14,226			15,528
Research and development	4,662			3,212			8,767			6,120
Service, rental and maintenance	7,944			8,187			16,010			16,492
Selling and marketing	5,329			6,429			11,251			12,957
General and administrative	11,939			10,439			23,649			20,946
Depreciation, amortization and accretion	2,851			3,235			6,074			6,558
Total operating expenses	39,915			39,015			79,977			78,601
Operating income	2,410			5,620			3,792			11,422
Interest income	154			61			276			109
Other income	89			104			58			357
Income before income tax expense	2,653			5,785			4,126			11,888
Income tax expense	(1,155		)	(2,334		)	(1,774		)	(4,993		)
Net income	$	1,498		$	3,451		$	2,352		$	6,895
Basic net income per common share	$	0.07		$	0.17		$	0.12		$	0.33
Diluted net income per common share	$	0.07		$	0.17		$	0.11		$	0.33
Basic weighted average common shares outstanding	20,353,801			20,568,058			20,441,781			20,637,070
Diluted weighted average common shares outstanding	20,366,102			20,568,058			20,508,473			20,637,070
Cash dividends declared per common share	$	0.125		$	0.125		$	0.250		$	0.250

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

3

SPOK HOLDINGS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	For the Six Months Ended June 30,
(Unaudited and in thousands)	2017			2016
Cash flows provided by operating activities:
Net income	$	2,352		$	6,895
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	6,074			6,558
Deferred income tax expense	1,069			4,346
Stock based compensation	1,953			1,368
Provision for doubtful accounts, service credits and other	458			321
Adjustment of non-cash transaction taxes	(700		)	(169		)
Changes in assets and liabilities:
Accounts receivable	(1,242		)	(1,421		)
Prepaid expenses, inventory, intangibles and other assets	(2,684		)	1,197
Accounts payable, accrued liabilities and other	(3,175		)	(342		)
Deferred revenue	2,561			1,126
Net cash provided by operating activities	6,666			19,879
Cash flows used in investing activities:
Purchase of property and equipment, net of proceeds from disposals of property and equipment	(5,198		)	(2,981		)
Net cash used in investing activities	(5,198		)	(2,981		)
Cash flows used in financing activities:
Cash distributions to stockholders	(10,239		)	(5,150		)
Purchase of common stock (including commissions), net of proceeds from issuance of common stock	(9,894		)	(5,985		)
Net cash used in financing activities	(20,133		)	(11,135		)
Net (decrease) increase in cash and cash equivalents	(18,665		)	5,763
Cash and cash equivalents, beginning of period	125,816			111,332
Cash and cash equivalents, end of period	$	107,151		$	117,095
Supplemental disclosure:
Income taxes paid	$	1,964		$	598

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

4

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 - ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

Spok Holdings, Inc. (NASDAQ: SPOK) ("Spok" or the "Company") through its wholly-owned subsidiary Spok, Inc., is the global leader in healthcare communications. We deliver clinical information to care teams when and where it matters most to improve patient outcomes. Many hospitals rely on the Spok Care Connect platform to enhance workflows for clinicians, support administrative compliance, and provide a better experience for patients. Our customers send over 100 million messages each month through their Spok solutions.

We offer a focused suite of unified critical communication solutions that include call center operations, clinical alerting and notifications, one-way and advanced two-way wireless messaging services, mobile communications and public safety solutions.

We provide one-way and advanced two-way wireless messaging services including information services throughout the United States. These services are offered on a local, regional and nationwide basis employing digital networks. One-way messaging consists of numeric and alphanumeric messaging services. Numeric messaging services enable subscribers to receive messages that are composed entirely of numbers, such as a phone number, while alphanumeric messages may include numbers and letters, which enable subscribers to receive text messages. Two-way messaging services enable subscribers to send and receive messages to and from other wireless messaging devices, including pagers, personal digital assistants and personal computers. We also offer voice mail, personalized greeting, message storage and retrieval, and equipment loss and/or maintenance protection to both one-way and two-way messaging subscribers. These services are commonly referred to as wireless messaging and information services.

We also develop, sell and support enterprise-wide systems for hospitals and other organizations needing to automate, centralize and standardize mission critical communications. These solutions are used for contact centers, clinical alerting and notification, mobile communications and messaging and for public safety notifications. These areas of market focus complement the market focus of our wireless services outlined above. These products and services are commonly referred to as software solutions and services.

Basis of Presentation

The accompanying condensed consolidated financial statements include our accounts and the accounts of our wholly-owned direct and indirect subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Our condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). In management's opinion, the unaudited condensed consolidated financial statements include all adjustments and accruals that are necessary for a fair presentation of the results of all interim periods reported herein and all such adjustments are of a normal, recurring nature.

Amounts shown on the condensed consolidated statements of income within the operating expense categories of cost of revenue; research and development; service, rental and maintenance; selling and marketing; and general and administrative are recorded exclusive of depreciation, amortization and accretion. These items are shown separately on the condensed consolidated statements of income within operating expenses. Foreign currency translation adjustments were immaterial and are not presented separately in our condensed consolidated financial statements and consequently no statements of comprehensive income are presented.

Certain prior period amounts in the condensed consolidated financial statements have been reclassified to conform to the current period's presentation. These reclassifications had no effect on the reported results of operations. In the fourth quarter 2016, the Company concluded that it was appropriate to separately state those operating expenses related to research and development. Previously those expenses had been classified under the Service, Rental and Maintenance operating category. Corresponding reclassifications were made to the condensed consolidated statements of income for the three and six months ended June 30, 2016. This change in classification has no effect on the previously reported condensed consolidated statements of income for any period.

The financial information included herein, other than the condensed consolidated balance sheet as of December 31, 2016, is unaudited. The condensed consolidated balance sheet at December 31, 2016 has been derived from, but does not include, all the disclosures contained in the audited consolidated financial statements as of and for the year ended December 31, 2016.

These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Annual Report”). The condensed consolidated statements of income for the interim periods presented are not necessarily indicative of the results that may be expected for a full year.

5

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Use of Estimates

The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. On an on-going basis, we evaluate estimates and assumptions, including but not limited to those related to the impairment of long-lived assets, intangible assets subject to amortization and goodwill, accounts receivable allowances, revenue recognition, depreciation expense, asset retirement obligations, severance and income taxes. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

NOTE 2 - RISKS AND OTHER IMPORTANT FACTORS

See “Item 1A. Risk Factors” of Part II of this Quarterly Report on Form 10-Q (“Quarterly Report”) and "Item 1A. Risk Factors" of Part I of the 2016 Annual Report, which describes key risks associated with our operations and industry. 

NOTE 3 - RECENT AND PENDING ACCOUNTING STANDARDS

Revenue

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. Since this ASU was issued, the FASB has issued several updates including ASU No. 2015-14 in July 2015 which delayed the effective date, ASU No. 2016-08 in March 2016 which updated guidance related to principal versus agent considerations, ASU No. 2016-10 in April 2016 which updated guidance related to the identification of performance obligations, ASU No. 2016-12 in May 2016 which updated guidance related to scope improvements and practical expedients and ASU No. 2016-20 which provided technical corrections and improvements but did not update guidance issued in prior updates. The effective date is January 1, 2018, and while early adoption to the original effective date of January 1, 2017 is permitted, we have elected not to early adopt.

ASU No. 2014-09 creates a five-step model that requires companies to exercise judgment when considering all relevant facts and circumstances in the determination of when and how revenue is recognized. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. We have completed our review of the acceptable transition methods and have selected the modified retrospective approach. We currently believe the modified retrospective approach will have a material impact on both deferred revenue and retained earnings in our 2018 consolidated financial statements.

We currently believe the standard will materially impact our revenue recognition on a going-forward basis once adopted. While we continue to assess the potential impacts of this standard, we currently believe that the most significant impact relates to our accounting for software license revenue. We expect software license revenue to be recognized at the time of shipment rather than over a combined service period or term period. Due to the nuances of certain contracts the actual revenue recognition treatment required under the standard will be dependent on contract-specific terms and may vary in some instances from recognition at the time that software is made available to the customer.

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard establishes a right of use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either financing or operating with the classification affecting the pattern of expense recognition in the income statement.

ASU No. 2016-02 will be effective for fiscal years beginning on January 1, 2019, including the related interim periods and early adoption of the standard is permitted. A modified retrospective transition approach is required for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. While we are still evaluating the impact of the potential new standard on our consolidated financial statements, we expect that upon adoption we will recognize ROU assets and lease liabilities and that the amounts could be material.

6

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Goodwill

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. The new standard simplifies how an entity tests for goodwill by eliminating Step 2 from the goodwill impairment test. Step 2 measured a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. By eliminating Step 2 an entity must now record an impairment to goodwill based on an analysis of the fair value of a reporting unit as compared to its carrying amount. An impairment charge is recognized for the amount that the carrying value exceeds the reporting unit's fair value.

ASU No. 2017-04 will be effective for fiscal years beginning on January 1, 2020, including interim periods within those fiscal years, and early adoption as of January 1, 2017 is permitted. All changes are to be accounted for on a prospective basis upon adoption. We do not believe adoption of ASU No. 2017-04 will have a material impact on our consolidated financial statements. We have not yet determined whether we will early adopt ASU No. 2017-04.

NOTE 4 - CONSOLIDATED FINANCIAL STATEMENT COMPONENTS

Prepaid Expenses and Other

Prepaid expenses and other consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Prepaid repairs and maintenance	$	2,312	$	1,561
Prepaid rent	1,559		208
Prepaid commissions	1,469		594
Prepaid taxes	792		100
Other prepaid expenses	1,537		1,921
Total prepaid expenses and other	$	7,669	$	4,384

Depreciation, Amortization and Accretion

Depreciation, amortization and accretion expenses consisted of the following for the periods stated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in thousands)	2017			2016			2017			2016
Depreciation
Leasehold improvements	$	75		$	52		$	125		$	98
Asset retirement costs	(97		)	(69		)	(195		)	(140		)
Paging and computer equipment	2,028			1,992			4,087			3,995
Furniture, fixtures and vehicles	76			69			141			148
Total depreciation	2,082			2,044			4,158			4,101
Amortization	629			1,035			1,636			2,146
Accretion	140			156			280			311
Total depreciation, amortization and accretion expense	$	2,851		$	3,235		$	6,074		$	6,558

Accounts Receivable, Net

Accounts receivable was recorded net of an allowance of $1.1 million at June 30, 2017 and December 31, 2016.

7

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Property and Equipment, Net

Property and equipment, net consisted of the following as of the date stated:

(Dollars in thousands)	Useful Life (In Years)	June 30, 2017			December 31, 2016
Leasehold improvements	lease term	$	4,051		$	3,843
Asset retirement costs	1-5	3,289			3,263
Paging and computer equipment	1-5	112,800			113,175
Furniture, fixtures and vehicles	3-5	4,447			2,852
Total property and equipment		124,587			123,133
Accumulated depreciation		(110,698		)	(110,315		)
Total property and equipment, net		$	13,889		$	12,818

Other Current Liabilities

Other current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Accrued outside services	$	1,057	$	975
Accrued accounting and legal	678		467
Accrued network costs	644		773
Deferred rent and other	255		433
Asset retirement obligations	186		85
Total other current liabilities	$	2,820	$	2,733

Other Non-Current Liabilities

Other non-current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Asset retirement obligations	$	7,548	$	7,472
Deferred rent and other	893		942
Dividends payable	129		507
Total other non-current liabilities	$	8,570	$	8,921

NOTE 5 - INTANGIBLE ASSETS, NET

Intangible Assets

Amortizable intangible assets at June 30, 2017 related primarily to customer relationships that resulted from our acquisition of Amcom Software, Inc. in 2011. Such intangibles are being amortized over a period of ten years.

The net consolidated balance of intangible assets consisted of the following at June 30, 2017:

		June 30, 2017
(Dollars in thousands)	Useful Life (In Years)	Gross Carrying Amount		Accumulated Amortization			Net Balance
Customer relationships	10	$	25,002	$	(15,836	)	$	9,166
Total amortizable intangible assets	10	$	25,002	$	(15,836	)	$	9,166

8

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Estimated amortization of intangible assets for future periods was as follows:

	(Dollars in thousands)
For the remaining six months ending December 31, 2017	$	1,250
For the year ending December 31:
2018	2,500
2019	2,500
2020	2,500
2021	416
Total amortizable intangible assets	$	9,166

NOTE 6 - ASSET RETIREMENT OBLIGATIONS

The components of the changes in the asset retirement obligation liabilities were:

(Dollars in thousands)	Short-Term Portion			Long-Term Portion			Total
Balance at January 1, 2017	$	85		$	7,472		$	7,557
Accretion	4			276			280
Amounts paid	(129		)	—			(129		)
Asset additions recorded, net	—			26			26
Reclassifications	226			(226		)	—
Balance at June 30, 2017	$	186		$	7,548		$	7,734

The balances above were included within other current liabilities and other non-current liabilities, respectively, at June 30, 2017.

Increases and reductions other than accretion, reclassification and amounts paid primarily relate to changes in estimate of the underlying liability, specifically as it relates to updates in estimated costs to remove a transmitter and the estimated timing of removal. The cost associated with the estimated removal costs and timing refinements due to ongoing network rationalization activities is expected to accrete to a total liability of $9.0 million. The total estimated liability is based on the transmitter locations remaining after we have consolidated the number of networks we operate and assume the underlying leases continue to be renewed to that future date.

Accretion expense was $0.3 million for the six months ended June 30, 2017 and 2016. Accretion expense related solely to asset retirement obligations and was recorded based on the interest method.

NOTE 7 - STOCKHOLDERS' EQUITY

General

Our authorized capital stock consists of 75 million shares of common stock, par value $0.0001 per share, and 25 million shares of preferred stock, par value $0.0001 per share.

At June 30, 2017 and December 31, 2016, we had no stock options outstanding.

At June 30, 2017 and December 31, 2016, there were 19,972,094 and 20,525,614 shares of common stock outstanding, respectively, and no shares of preferred stock outstanding.

9

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Changes in Stockholders' Equity

Changes in stockholders’ equity for the six months ended June 30, 2017 consisted of the following:

	(Dollars in thousands)
Balance at January 1, 2017	$	322,087
Net income for the six months ended June 30, 2017	2,352
Cash dividends declared	(5,221		)
Common stock repurchase program	(10,024		)
Amortization of stock based compensation	1,953
Other	363
Balance at June 30, 2017	$	311,510

Dividends

The following table details our cash dividend payments made in 2017. Cash dividends paid as disclosed in the condensed consolidated statements of cash flows for the six months ended June 30, 2017 and 2016 include previously declared cash dividends on shares of vested restricted common stock ("restricted stock") issued to our non-executive directors and dividends related to vested restricted stock units ("RSUs") issued to eligible employees. Cash dividends on RSUs and restricted stock have been accrued and are paid when the applicable vesting conditions are met. Accrued cash dividends on forfeited restricted stock and RSUs are also forfeited.

Declaration Date	Record Date	Payment Date	Per Share Amount		Total Payment(1)
					(Dollars in thousands)
December 20, 2016	January 4, 2017	January 17, 2017	$	0.250	$	5,128
March 1, 2017	March 17, 2017	March 30, 2017	0.125		2,566
April 26, 2017	May 23, 2017	June 23, 2017	0.125		2,545
	Total		$	0.500	$	10,239

(1) The total payment reflects the cash dividends paid in relation to common stock and vested restricted stock.

On July 26, 2017, our Board of Directors declared a regular quarterly cash dividend of $0.125 per share of common stock with a record date of August 18, 2017, and a payment date of September 8, 2017. This cash dividend of approximately $2.5 million will be paid from available cash on hand.

Common Stock Repurchase Program

On April 26, 2017, the Company's Board of Directors authorized the repurchase of up to $10.0 million of the Company's common stock through 2017 on the open market or in privately negotiated transactions. The Company used the entire $10.0 million of repurchase authority by June 30, 2017. The following table presents information with respect to purchases made by the Company during the six months ended June 30, 2017:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of the Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Publicly Announced Plans or Programs
					(Dollars in thousands)
Beginning Balance					$	10,000
Three Months Ended June 30, 2017	572,550	17.47		572,550	—
Total	572,550	$	17.47	572,550

10

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Net Income per Common Share

Basic net income per common share is computed on the basis of the weighted average common shares outstanding. Diluted net income per common share is computed on the basis of the weighted average common shares outstanding plus the effect of all potentially dilutive common shares including outstanding restricted stock and RSUs, which are treated as contingently issuable shares, using the “treasury stock” method.

The Company has determined, based on the provisions of the 2015 Long-Term Incentive Plan ("2015 LTIP"), that unvested RSUs do not currently meet, nor have they met since issuance, the criteria to be considered dilutive. Therefore, we have excluded them from the calculation of both diluted net income per common share as well as the diluted weighted average shares of common stock and common stock equivalents for the three and six months ended June 30, 2017 and removed them from the comparative information for the three and six months ended June 30, 2016. This correction is immaterial to our financial statements and corresponding disclosures.

Our second quarter 2017 interim condensed consolidated financial statements reflect this determination within the calculation of basic and diluted weighted average shares outstanding and earnings per share for the three and six months ended June 30, 2017 and 2016.

We assessed the materiality of these changes on our 2016 financial statements in accordance with SEC Staff Accounting Bulletin ("SAB") No. 99, Materiality, codified in Accounting Standards Codification ("ASC") 250, Presentation of Financial Statements, and concluded that they were not material to any prior annual or interim periods. We have corrected the second quarter 2016 by revising the second quarter 2016 interim condensed consolidated financial statements and other financial information included herein. Future periods will be revised, as applicable.

The components of basic and diluted net income per common share were as follows for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(in thousands, except for share and per share amounts)	2017		2016		2017		2016
Numerator:
Net income	$	1,498	$	3,451	$	2,352	$	6,895
Denominator:
Weighted average shares used to compute net income per common share - basic	20,353,801		20,568,058		20,441,781		20,637,070
Weighted average shares used to compute net income per common share - diluted	20,366,102		20,568,058		20,508,473		20,637,070
Basic net income per common share	$	0.07	$	0.17	$	0.12	$	0.33
Diluted net income per common share	$	0.07	$	0.17	$	0.11	$	0.33

Spok Holdings, Inc. Equity Incentive Award Plan

The following table summarizes the activities under the 2012 Equity Incentive Award Plan ("2012 Equity Plan") from January 1, 2017 through June 30, 2017:

	Activity
Total equity securities available at January 1, 2017	1,246,939
Less: 2015 Performance-Based LTIP RSUs awarded to eligible employees, net of forfeitures	112,202
Less: 2017 Time-Based LTIP RSUs awarded to eligible employees, net of forfeitures	117,471
Less: Restricted stock awarded to non-executive members of the Board of Directors	10,047
Total equity securities available at June 30, 2017	1,007,219

11

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

On July 24, 2017 the Company's stockholders approved an amendment to our 2012 Equity Plan to: (i) expand the list of performance criteria that may be used for purposes of granting performance awards under the 2012 Equity Plan, and (ii) limit the annual value awards that may be granted to the Company's non-employee directors to $750,000 per year, subject to limited exceptions as described in the amendment. The approval of the amendment was intended to satisfy the stockholder approval requirements under Section 162(m) of the Internal Revenue Code.

2015 Long Term Incentive Plan. On December 9, 2014, our Board of Directors adopted the 2015 LTIP (which provides for a 36-month vesting period) that included a stock component in the form of RSUs. Under this incentive program, RSUs will be granted to eligible employees annually and each annual grant will generally vest over a three-year service period. Each annual grant includes performance metrics required to be met for vesting purposes, as established by the Board of Directors. Our Board of Directors also approved that future cash dividends related to the RSUs will be set aside and paid in cash to each eligible employee when the RSUs are converted into shares of common stock. RSUs would be converted into shares of common stock on the earlier of a change in control of the Company (as defined in the 2015 LTIP) or on or after the third business day following the day that we file the Annual Report on Form 10-K with the SEC for the grant's final vesting year, but in no event later than December 31 of the year following the vesting date if the pre-established performance conditions are achieved. Any unvested RSUs awarded under the 2015 LTIP and the related cash dividends are forfeited if the participant terminates employment with the Company.

On January 2, 2015, our Board of Directors granted 254,777 RSUs with a grant date fair value of $4.4 million. An additional 6,123 RSUs were granted to eligible employees who were promoted or joined the Company during the twelve months ended December 31, 2015. On January 28, 2016, our Board of Directors issued a second grant of 227,082 RSUs with a grant date fair value of $3.8 million. An additional 7,629 RSUs were granted to eligible employees who were promoted or joined the Company during the twelve months ended December 31, 2016. On January 2, 2017, our Board of Directors issued a third grant of 108,428 RSUs with a grant date fair value of $2.2 million. An additional 10,039 RSUs were issued to eligible employees who were promoted or joined the Company during the six months ended June 30, 2017. All issuances were made to eligible employees under the 2012 Equity Plan for the 2015 LTIP pursuant to a Restricted Stock Unit Agreement. Eligible employees have the opportunity to earn RSUs based upon continued employment with the Company and the achievement of performance goals established by our Board of Directors for our consolidated revenue and operating cash flows (as defined by the Company) during the period of January 1, 2015 through December 31, 2017 (“the 2015-2017 performance period”) for the 2015 grant, the period of January 1, 2016 through December 31, 2018 ("the 2016-2018 performance period") for the 2016 grant, and January 1, 2017 through December 31, 2019 ("the 2017-2019 performance period") for the 2017 grant, respectively. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

The following table details activities with respect to RSUs issued and outstanding under the 2015 LTIP for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	451,493		$	17.10
Granted	118,467		20.52
Vested	—		—
Forfeited	(6,265	)	17.52
Non-vested RSUs at June 30, 2017	563,695		$	17.81	$	3,264	18

2017 Time Based Long Term Incentive Plan. On January 2, 2017, our Board of Directors granted 108,394 RSUs with a grant date fair value of $2.2 million. An additional 10,039 shares were issued to eligible employees who were promoted or joined the Company during the six months ended June 30, 2017. Our Board of Directors also approved that future cash dividends related to the RSUs will be set aside and paid in cash to each eligible employee when the RSUs are converted into shares of common stock. These RSUs vest one third on December 31, 2017, December 31, 2018 and December 31, 2019. RSUs would be converted into shares of common stock on the earlier of a change in control of the Company (as defined in the 2012 Equity Plan) or on or after the third business day following the day that we file the Annual Report on Form 10-K with the SEC for the grant's vesting years, but in no event later than December 31 of the year following the vesting date. Any unvested RSUs awarded under the 2017 time based grant and the related cash dividends are forfeited if the participant terminates employment with the Company. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

12

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table details activities with respect to RSUs issued and outstanding under the 2017 time based LTIP grant for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	—		$	—
Granted	118,433		20.52
Vested	—		—
Forfeited	(962	)	20.75
Non-vested RSUs at June 30, 2017	117,471		$	20.52	$	1,696	18

Employee Stock Purchase Plan. On July 25, 2016, our stockholders approved the registration with the SEC of 250,000 shares of common stock, to be issued from time to time in connection with purchases under the Spok Holdings, Inc. 2016 Employee Stock Purchase Plan ("ESPP"). Shares were first offered for purchase under the ESPP during the third quarter of 2016. Under the ESPP, eligible participants can voluntarily elect to have contributions withheld from their pay for the duration of an offering period, subject to the ESPP limits. At the end of an offering period, contributions will be used to purchase the Company's common stock at a discount to the market price based on the first or last day of the offering period, whichever is lower. Participants are required to hold common stock for a minimum period of two years from the grant date. Participants will begin earning dividends on shares after the purchase date. Each offering period will generally last for no longer than six months. Once an offering period begins, participants cannot adjust their withholding amount. If a participant chooses to withdraw, any previously withheld funds will be returned to the participant, with no stock purchased, and that participant will be eligible to participate in the ESPP at the next offering period. If the participant terminates employment with the Company during the offering period, all contributions will be returned to the employee and no stock will be purchased at a discounted rate. For the three and six months ended June 30, 2017, 8,983 shares of common stock were purchased for a total cost of $0.1 million. No shares were purchased during the corresponding time periods in 2016. The following table summarizes the activities under the ESPP from January 1, 2017 through June 30, 2017:

	Activity
Total ESPP equity securities available at January 1, 2017	246,039
Less: ESPP common stock purchased by eligible employees	8,983
Total ESPP securities available at June 30, 2017	237,056

Amounts withheld from participants will be classified as a liability on the balance sheet until funds are used to purchase shares. This liability amount is immaterial to the overall financial statements. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

NOTE 8 - INCOME TAXES

Spok files a consolidated U.S. Federal income tax return and income tax returns in various state, local and foreign jurisdictions as required.

At June 30, 2017, we had total deferred income tax assets ("DTAs") of $72.0 million and no valuation allowance. This reflects a change from the December 31, 2016 balance of DTAs of $73.1 million and no valuation allowance. The change from December 31, 2016 to June 30, 2017 reflects the expected usage of the DTAs to offset expected 2017 taxable income and changes in tax rates.

We consider both positive and negative evidence when evaluating the recoverability of our DTAs. The assessment is required to determine whether based on all available evidence, it is more likely than not (i.e., greater than a 50% probability) whether all or some portion of the DTAs will be realized in the future. During the fourth quarter of each year, we update our multi-year forecast of taxable income for our operations which assists in analyzing the recoverability of our DTAs.

The anticipated effective income tax rate is expected to continue to differ from the Federal statutory rate of 35% primarily due to the effect of state income taxes, the effect of changes to the DTA valuation allowance, permanent differences between book and taxable income and certain discrete items.

As of January 1, 2017, we had approximately $126 million of Federal Net Operating Losses ("NOLs") available to offset future taxable income.

13

SPOK HOLDINGS, INC.

UNAUDITED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

NOTE 9 - STOCK BASED COMPENSATION

We record all stock-based awards, which consist of RSUs, restricted stock and the option to purchase common stock under the ESPP, at fair value as of the grant date. Stock based compensation expense is recognized based on a straight-line amortization basis over the respective service period. Forfeitures and withdrawals are accounted for on an as incurred basis.

The following table reflects the items for stock based compensation expense on the condensed consolidated statements of income for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Dollars in thousands)	2017		2016		2017		2016
2015 LTIP (performance-based)	$	508	$	622	$	998	$	1,153
2017 LTIP (time-based)	371		—		714		—
ESPP	15		—		30		—
Board of Directors restricted stock	104		108		211		215
Total stock based compensation expense	$	998	$	730	$	1,953	$	1,368

In the fourth quarter of 2016 we determined that only 50% of the 2015 and 2016 grants made under the 2015 LTIP were expected to vest based on the related performance criteria and our assessment of the anticipated future performance applied to the performance criteria. As such, expenses listed in the table above reflect only the portion of grants and related expense that we anticipate will vest for those awards.

NOTE 10 - COMMITMENTS AND CONTINGENCIES

There have been no material changes during the six months ended June 30, 2017 to the commitments and contingencies previously reported in the 2016 Annual Report.

NOTE 11 - RELATED PARTIES

A member of our Board of Directors also serves as a director for an entity that leases transmission tower sites to the Company. For the three months ended June 30, 2017 and 2016, we incurred site rent expenses of $1.0 million and for the six months ended June 30, 2017 and 2016, we incurred site rent expenses of $2.0 million from the entity on which the individual serves as a director. Site rent expenses are included in service, rental and maintenance expenses.

14

ITEM 2.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

This Quarterly Report contains forward-looking statements and information relating to Spok Holdings, Inc. and its subsidiaries (collectively, “we,” “Spok,” or the “Company”) that set forth anticipated results based on management’s current plans, known trends and assumptions. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Statements that are predictive in nature, that depend upon or refer to future events or conditions, or that include words such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “will,” “target,” “forecast” and similar expressions, as they relate to Spok are forward-looking statements.

Although these statements are based upon current plans, known trends and assumptions that management considers reasonable, they are subject to certain risks, uncertainties and assumptions, including but not limited to those discussed below and under the captions “Business,” “Management’s Discussion and Analysis of Financial Condition and Statements of Income (“MD&A”),” and “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2016, filed with the United States Securities and Exchange Commission (the “SEC”) on March 2, 2017 (the “2016 Annual Report”). Should known or unknown risks or uncertainties materialize, known trends change, or underlying assumptions prove inaccurate, actual results or outcomes may differ materially from past results and those described herein as anticipated, believed, estimated, expected, intended, targeted or forecasted. Investors are cautioned not to place undue reliance on these forward-looking statements.

The Company undertakes no obligation to update forward-looking statements. Investors are advised to consult all further disclosures the Company makes in its subsequent reports on Form 10-Q and Form 8-K that it will file with the SEC. Also note that, in the risk factors disclosed in the Company’s 2016 Annual Report, the Company provides a cautionary discussion of risks, uncertainties and possibly inaccurate assumptions relevant to its business. These are factors that, individually or in the aggregate, could cause the Company’s actual results to differ materially from past results as well as those results that may be anticipated, believed, estimated, expected, intended, targeted or forecasted. It is not possible to predict or identify all such risk factors. Consequently, investors should not consider the risk factor discussion to be a complete discussion of all of the potential risks or uncertainties that could affect Spok's business, statement of income or financial condition, subsequent to the filing of this Quarterly Report.

Overview

The following MD&A is intended to help the reader understand the statements of income and financial position of Spok. This MD&A is provided as a supplement to, and should be read in conjunction with, our 2016 Annual Report and our unaudited condensed consolidated financial statements and accompanying notes. A reference to a “Note” in this section refers to the accompanying Unaudited Notes to Condensed Consolidated Financial Statements.

Spok, acting through its indirect wholly-owned operating subsidiary, Spok, Inc., delivers smart, reliable solutions to help protect the health, well-being and safety of people primarily in the United States. Organizations rely on Spok for workflow improvement, secure texting, paging services, contact center optimization and public safety response.

Business

See Note 1 to our Unaudited Notes to Condensed Consolidated Financial Statements of Part I of this Quarterly Report on Form 10-Q ("Quarterly Report") and "Item 1. Business" of Part I of the 2016 Annual Report, which describes our business in further detail.

Revenue

We offer a suite of unified critical communication solutions that include call center operations, clinical alerting and notifications, one-way and advanced two-way wireless messaging services, mobile communications and public safety response.

We develop, sell and support enterprise-wide systems for healthcare, government, large enterprise and other organizations needing to automate, centralize and standardize their approach to critical communications. Our solutions can be found in prominent hospitals; large government agencies; leading public safety institutions, colleges and universities; large hotels, resorts and casinos; and well-known manufacturers. Our primary market has been the healthcare industry, particularly hospitals. We have identified hospitals with 200 or more beds as the primary targets for our software and wireless solutions.

15

Revenue generated by wireless messaging services (including voice mail, personalized greeting, message storage and retrieval) and equipment loss and/or maintenance protection for both one-way and two-way messaging subscribers is presented as wireless revenue in our statements of income. Revenue generated by the sale of our software solutions, which includes software subscription, software license, professional services (installation, consulting and training), equipment (to be used in conjunction with the software) and post-contract support (on-going maintenance), is presented as software revenue in our statements of income. Our software is licensed to end users under an industry standard software license agreement. For the six months ended June 30, 2017 and 2016, wireless revenue represented approximately 61% and software revenue represented approximately 39% of our consolidated revenue.

Wireless Revenue

Our core offering includes subscriptions to one-way or two-way messaging services for a periodic (monthly, quarterly, semiannual, or annual) service fee. This is generally based upon the type of service provided, the geographic area covered, the number of devices provided to the customer and the period of commitment. A subscriber to one-way messaging services may select coverage on a local, regional or nationwide basis to best meet their messaging needs. Two-way messaging is generally offered on a nationwide basis. In addition, subscribers either contract for a messaging device from us for an additional fixed monthly fee or they own a device, having purchased it either from us or from another vendor. We also sell devices to resellers who lease or resell devices to their subscribers and then sell messaging services utilizing our networks. We offer ancillary services, such as voicemail and equipment loss or maintenance protection, which help increase the monthly recurring revenue we receive along with these traditional messaging services. In 2015 and 2016 we launched new and exclusive one-way (model number T5) and two-way (model number T52) alphanumeric pagers, respectively. Both pagers are configurable to support un-encrypted or encrypted operation. When configured for encryption, they utilize AES-128 bit encryption, screen locking and remote wipe capabilities. With encryption enabled these new secure paging devices enhance our service offerings to the healthcare community by adding Health Insurance Portability and Accountability Act ("HIPAA") security capabilities to the low cost, highly reliable and availability benefits of paging. (See Item 1. “Business” in the 2016 Annual Report for more details.)

Software Revenue

Software revenue consists of two primary components: operations revenue and maintenance revenue. Operations revenue consists of license revenue, professional services revenue, and equipment revenue. Maintenance revenue is for ongoing support of a software application or equipment (typically for one year). We recognize equipment revenue when it is shipped or delivered to the customer depending on the delivery method of Free on Board ("FOB") shipping or FOB destination, respectively. License, professional services and maintenance revenue is recognized ratably over the longer of the period of professional services delivery to the customer or the contractual term of the maintenance agreement. If the period of delivery to the customer is not known, license and professional services revenue will be recognized when software and professional services are fully delivered to the customer and the maintenance revenue will be recognized ratably over the remaining contractual term of the agreement.

The following tables present the wireless and software revenue by key market segments for the periods stated and illustrate the relative significance of these market segments to our operations.

Market Segment	For the Three Months Ended June 30, 2017								For the Three Months Ended June 30, 2016
(Dollars in thousands)	Wireless		Software		Total		% of Total		Wireless		Software		Total		% of Total
Healthcare	$	19,696	$	11,589	$	31,285	73.9	%	$	20,761	$	10,617	$	31,378	70.3	%
Government	1,517		1,099		2,616		6.2	%	1,780		1,639		3,419		7.7	%
Large Enterprise	2,066		832		2,898		6.8	%	2,423		905		3,328		7.5	%
Other(1)	2,360		3,166		5,526		13.1	%	2,895		3,615		6,510		14.5	%
Total	$	25,639	$	16,686	$	42,325	100.0	%	$	27,859	$	16,776	$	44,635	100.0	%

⁽¹⁾ Other includes hospitality, resort, indirect and billable travel revenue.

Market Segment	For the Six Months Ended June 30, 2017								For the Six Months Ended June 30, 2016
(Dollars in thousands)	Wireless		Software		Total		% of Total		Wireless		Software		Total		% of Total
Healthcare	$	39,488	$	22,029	$	61,517	73.4	%	$	41,541	$	21,456	$	62,997	70.0	%
Government	3,079		2,854		5,933		7.1	%	3,586		3,873		7,459		8.3	%
Large Enterprise	4,144		1,372		5,516		6.6	%	4,969		1,742		6,711		7.5	%
Other(1)	4,788		6,015		10,803		12.9	%	5,935		6,921		12,856		14.2	%
Total	$	51,499	$	32,270	$	83,769	100.0	%	$	56,031	$	33,992	$	90,023	100.0	%

⁽¹⁾ Other includes hospitality, resort, indirect and billable travel revenue.

16

Operating Expenses

Our operating expenses are presented in functional categories. Certain of our functional categories are especially important to overall expense control and management; these operating expenses are categorized as follows:

• Cost of revenue. These are expenses associated with the delivery of our revenue, which consist primarily of hardware, third-party software, outside service expenses and payroll and related expenses for our professional services, logistics, customer support and maintenance staff.

• Research and Development. These expenses relate primarily to the development of new software products and the ongoing maintenance and enhancement of existing products. This classification consists primarily of employee payroll and related expenses, outside services related to the design, development, testing and enhancement of our solutions and to a lesser extent hardware equipment.

• Service, rental and maintenance. These are expenses associated with the operation of our paging networks. Expenses consist largely of site rent expenses for transmitter locations, telecommunication expenses to deliver messages over our paging networks, and payroll and related expenses for our engineering and pager repair functions.

• Selling and marketing. The sales and marketing staff are involved in selling our communication solutions primarily in the United States. These expenses support our efforts to maintain gross placements of units in service, which mitigated the impact of disconnects on our wireless revenue base, and to identify business opportunities for additional or future software sales. We have a centralized marketing function, which is focused on supporting our products and vertical sales efforts by strengthening our brand, generating sales leads and facilitating the sales process. These marketing functions are accomplished through targeted email campaigns, webinars, regional and national user conferences, monthly newsletters and participation at industry trade shows. Expenses consist largely of payroll and related expenses, commissions and other costs such as travel and advertising costs.

• General and administrative. These are expenses associated with information technology and administrative functions. This classification consists primarily of payroll and related expenses, outside service expenses, taxes, licenses and permit expenses, and facility rent expenses.

We review the percentages of operating expenses to revenue on a regular basis. Even though the operating expenses are classified as previously described, expense control and management are also performed by expense category. Approximately 65% of the operating expenses referred to above were incurred in payroll and related expenses, site and facility rent expenses and telecommunication expenses for both the three and six months ended June 30, 2017 and 2016.

Our largest expense, payroll and related expenses, includes wages, commissions, incentives, employee benefits and related taxes. On a monthly basis, we review the number of employees in major functional categories and the design and physical locations of functional groups to continuously improve efficiency, to simplify organizational structures, and to minimize the number of physical locations for the Company. We had 604 full-time equivalent employees (“FTEs”) at June 30, 2017, an increase of 1.2% from 597 FTEs at June 30, 2016 and an increase of 2.9% from 587 FTEs at December 31, 2016.

We operate local, regional, and nationwide one-way and two-way paging networks. These networks each require locations on which to place transmitters, receivers, and antennae. Site rent expenses for transmitter locations are highly dependent on the number of transmitters, which in turn is dependent on the number of networks. In addition, these expenses generally do not vary directly with the number of subscribers or units in service, which is detrimental to our operating margins as wireless revenue declines. In order to reduce these expenses, we have an active program to consolidate the number of paging networks, and thus transmitter locations, which we refer to as network rationalization. We have reduced the number of active transmitters by 2.7% to 4,073 active transmitters at June 30, 2017 from 4,184 active transmitters at June 30, 2016 and by 2.1% from 4,159 active transmitters at December 31, 2016.

Telecommunication expenses are incurred to interconnect our paging networks and to provide telephone numbers for customer use, points of contact for customer service, and connectivity among our offices. These expenses are dependent on the number of units in service, the number of customers we support and the number of office and network locations that we maintain. The number or duration of telephone calls to call centers may vary from period to period based on factors other than the number of units in service or customers, which could cause telecommunication expenses to vary.

Stock based compensation includes expenses related to our Long Term Incentive Plan ("LTIP"), Employee Stock Purchase Plan ("ESPP") and restricted stock issued to the Board of Directors. In 2017, the Company determined for competitive and employee retention reasons the 2017 LTIP grant would consist of a performance based component and a time-based component (For additional details refer to Note 7, "Stockholders' Equity" and Note 9, "Stock Based Compensation".)

17

Statements of Income

Comparison of the Statements of Income Elements for the Three and Six Months Ended June 30, 2017 and2016

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Revenue:
Wireless	$	25,639	$	27,859	$	(2,220	)	(8.0	)%	$	51,499	$	56,031	$	(4,532	)	(8.1	)%
Software	16,686		16,776		(90		)	(0.5	)%	32,270		33,992		(1,722		)	(5.1	)%
Total	$	42,325	$	44,635	$	(2,310	)	(5.2	)%	$	83,769	$	90,023	$	(6,254	)	(6.9	)%
Selected operating expenses:
Cost of revenue	$	7,190	$	7,513	$	(323	)	(4.3	)%	$	14,226	$	15,528	$	(1,302	)	(8.4	)%
Research and development	4,662		3,212		1,450			45.1	%	8,767		6,120		2,647			43.3	%
Service, rental and maintenance	7,944		8,187		(243		)	(3.0	)%	16,010		16,492		(482		)	(2.9	)%
Selling and marketing	5,329		6,429		(1,100		)	(17.1	)%	11,251		12,957		(1,706		)	(13.2	)%
General and administrative	11,939		10,439		1,500			14.4	%	23,649		20,946		2,703			12.9	%
Total	$	37,064	$	35,780	$	1,284		3.6	%	$	73,903	$	72,043	$	1,860		2.6	%
FTEs	604		597		7			1.2	%	604		597		7			1.2	%
Active transmitters	4,073		4,184		(111		)	(2.7	)%	4,073		4,184		(111		)	(2.7	)%

Revenue — Wireless

The table below details total wireless revenue for the periods stated:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Wireless revenue:
Paging revenue	$	24,572	$	26,564	$	(1,992	)	(7.5	)%	$	49,544	$	53,665	$	(4,121	)	(7.7	)%
Product and other revenue	1,067		1,295		(228		)	(17.6	)%	1,955		2,366		(411		)	(17.4	)%
Total wireless revenue	$	25,639	$	27,859	$	(2,220	)	(8.0	)%	$	51,499	$	56,031	$	(4,532	)	(8.1	)%

The decrease in wireless revenue for the three and six months ended June 30, 2017 compared to the same periods in 2016 reflects the decrease in demand for our wireless services. Paging revenue consists primarily of recurring fees associated with the provision of messaging services and fees for paging devices and is net of a provision for service credits. Product and other revenue reflects system sales, the sale of devices and charges for paging devices that are not returned and are net of anticipated credits.

The demand for one-way and two-way messaging declined at each specified date and we believe demand will continue to decline for the foreseeable future. Demand for our services has also been impacted by the shift from narrow band wireless service offerings to broad band technology services by our competition.

As demand for one-way and two-way messaging has declined, we have developed or added service offerings such as Spok Mobile with a pager number in order to increase our revenue potential and mitigate the decline in our wireless revenue. We will continue to explore ways to innovate and provide customers the highest value possible. Software revenue is anticipated to increase, while the wireless revenue is expected to continue to decrease reflecting the changing technology expectations of our customer base.

18

Wireless revenue is generally based upon the number of units in service and the monthly charge per unit. The number of units in service changes based on subscribers added, referred to as gross placements, less subscriber cancellations, or disconnects. The net of gross placements and disconnects is commonly referred to as net gains or losses of units in service or the net disconnect rate. The absolute number of gross placements as well as the number of gross placements relative to average units in service in a period, referred to as the gross placement rate, is monitored on a monthly basis. Disconnects are also monitored on a monthly basis. The ratio of units disconnected in a period to average units in service for the same period, called the disconnect rate, is an indicator of our success at retaining subscribers, which is important in order to maintain recurring revenue and to control operating expenses.

The following table sets forth information on our units in service by account size at specified dates:

Account Size	As of June 30, 2017			As of March 31, 2017			As of June 30, 2016
(Units in thousands)	Units	% of Total		Units	% of Total		Units	% of Total
1 to 100 Units(1)	98	9.0	%	102	9.3	%	114	10.0	%
101 to 1000 Units(1)	204	18.8	%	214	19.6	%	228	19.9	%
> 1000 Units(1)	784	72.2	%	775	71.1	%	802	70.1	%
Total units in service(1)	1,086	100.0	%	1,091	100.0	%	1,144	100.0	%

⁽¹⁾  All figures presented include both direct and indirect units in service

The following table sets forth information on the net disconnect rate by account size for our customers for the periods stated:

	For the Three Months Ended
Account Size	June 30, 2017		March 31, 2017		June 30, 2016
1 to 100 Units(1)	(3.7	)%	(3.4	)%	(4.0	)%
101 to 1000 Units(1)	(4.5	)%	(1.3	)%	(4.0	)%
> 1000 Units(1)	1.1	%	(1.7	)%	0.6	%
Total net unit loss %(1)	(0.4	)%	(1.8	)%	(0.8	)%

⁽¹⁾  All figures presented include both direct and indirect units in service

The following table sets forth information on Average Revenue Per Unit ("ARPU") by account size for the periods stated:

	For the Three Months Ended
Account Size	June 30, 2017		March 31, 2017		June 30, 2016
1 to 100 Units(1)	$	12.16	$	12.22	$	12.48
101 to 1000 Units(1)	8.61		8.66		8.65
> 1000 Units(1)	6.64		6.64		6.75
Total ARPU(1)	$	7.52	$	7.56	$	7.71

⁽¹⁾  All figures presented include both direct and indirect units in service

While ARPU for similar services and distribution channels is indicative of changes in monthly charges and the revenue rate applicable to new subscribers, this measurement on a consolidated basis is affected by several factors, including the mix of units in service and the pricing of the various components of our services. We expect future annual revenue to decline in line with recent trends. The decrease in consolidated ARPU for the three months ended June 30, 2017 from the same period in 2016 was due to the change in composition of our customer base as the percentage of units in service attributable to larger customers continues to increase. These larger customers benefit from lower pricing associated with their larger number of units-in-service. We believe that without further price adjustments, ARPU will trend lower for the remainder of 2017. Price increases could mitigate, but not completely offset, the expected declines in both ARPU and revenue.

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The following reflects the impact of subscribers and ARPU on the change in wireless revenue:

	Units in Service as of June 30,				Revenue for the Three Months Ended June 30,							Change Due To:
(in thousands)	2017	2016	Change		2017		2016		Change			ARPU			Units
Total	1,086	1,144	(58	)	$	24,572	$	26,564	$	(1,992	)	$	(578	)	$	(1,414	)

	Units in Service as of June 30,				Revenue for the Six Months Ended June 30,						Change Due To:
(in thousands)	2017	2016	Change		2017		2016	Change			ARPU			Units
Total	1,086	1,144	(58	)	$	49,544	53,665	$	(4,121	)	$	(1,284	)	$	(2,837	)

As previously discussed, demand for messaging services has declined over the past several years and we anticipate that it will continue to decline for the foreseeable future, which would result in reductions in wireless revenue due to the decreased number of subscribers and related units in service.

Revenue — Software

The table below details the components of software revenue for the periods stated:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Subscription	$	623	$	503	$	120		23.9	%	$	1,167	$	1,001	$	166		16.6	%
License	1,641		1,691		(50		)	(3.0	)%	2,812		3,284		(472		)	(14.4	)%
Services	3,650		4,202		(552		)	(13.1	)%	7,003		8,517		(1,514		)	(17.8	)%
Equipment	1,127		1,250		(123		)	(9.8	)%	2,100		2,979		(879		)	(29.5	)%
Operations revenue	7,041		7,646		(605		)	(7.9	)%	13,082		15,781		(2,699		)	(17.1	)%
Maintenance revenue	9,645		9,130		515			5.6	%	19,188		18,211		977			5.4	%
Total software revenue	$	16,686	$	16,776	$	(90	)	(0.5	)%	$	32,270	$	33,992	$	(1,722	)	(5.1	)%

The decrease in operations revenue primarily reflects a decrease in the number of projects completed during the three and six months ended June 30, 2017 as compared to the same periods in 2016. The increase in maintenance revenue reflects our continuing success in renewals of our maintenance support for existing software solutions and in maintenance support for sales of new solutions. The maintenance revenue renewal rates for the three and six months ended June 30, 2017 and 2016 were in excess of 99%.

Our software revenue is dependent on the conversion of our software bookings into revenues. On a regular basis, we enter into contractual arrangements with our customers to provide software licenses, professional services, and equipment sales. In addition, we enter into contractual arrangements for maintenance with our customers on new solutions or renewals of existing solutions. These contractual arrangements are reported as bookings and represent future revenue. Total bookings increased by 1.7% and 14.3% for the three and six months ended June 30, 2017 as compared to the same period in 2016. Operations and new maintenance orders bookings decreased by 2.4% for the three months ended June 30, 2017 but increased by 22.6% for the six months ended June 30, 2017 compared to the same period in 2016. The significant increase in bookings for the six months ended June 30, 2017 as compared to the same period in 2016 was primarily due to a strong first quarter in which average deal sizes were much larger in 2017 as compared to 2016. The maintenance bookings continue to reflect a strong revenue renewal rate in excess of 99%. Maintenance and subscription renewals bookings increased by 6.0% and 7.5% for the three and six months ended June 30, 2017, compared to the same period in 2016.

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The following table summarizes total bookings for the periods stated:

Bookings	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Dollars in thousands)	2017		2016		2017		2016
Operations and new maintenance orders	$	9,933	$	10,181	$	19,380	$	15,805
Maintenance and subscription renewals	10,472		9,882		20,813		19,365
Total bookings	$	20,405	$	20,063	$	40,193	$	35,170

We reported a software backlog of $43.5 million at June 30, 2017, which represented all orders received from customers not yet recognized as revenue. We continually review our backlog and adjust the balance to reflect expected amount and timing of customer implementations.

Backlog	(Dollars in thousands)
Beginning balance at April 1, 2017	$	40,555
Operations bookings	9,933
Maintenance and subscription renewals	10,472
Available backlog	$	60,960
Operations revenue	(7,041		)
Maintenance revenue	(9,645		)
Other(1)	(819		)
Total backlog at June 30, 2017	$	43,455

⁽¹⁾  Other reflects cancellations and other adjustments to backlog.

Operating Expenses

The following is a review of our operating expense categories for the three and six months ended June 30, 2017 and 2016.

Operating expenses	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Cost of revenue	$	7,190	$	7,513	$	(323	)	(4.3	)%	$	14,226	$	15,528	$	(1,302	)	(8.4	)%
Research and development	4,662		3,212		1,450			45.1	%	8,767		6,120		2,647			43.3	%
Service, rental and maintenance	7,944		8,187		(243		)	(3.0	)%	16,010		16,492		(482		)	(2.9	)%
Selling and marketing	5,329		6,429		(1,100		)	(17.1	)%	11,251		12,957		(1,706		)	(13.2	)%
General and administrative	11,939		10,439		1,500			14.4	%	23,649		20,946		2,703			12.9	%
Total	$	37,064	$	35,780	$	1,284		3.6	%	$	73,903	$	72,043	$	1,860		2.6	%
FTEs	604		597		7			1.2	%	604		597		7			1.2	%

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Cost of revenue. Cost of revenue consisted primarily of the following items:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Payroll and related	$	4,607	$	4,406	$	201		4.6	%	$	9,096	$	9,040	$	56		0.6	%
Cost of sales	1,815		2,227		(412		)	(18.5	)%	3,725		4,900		(1,175		)	(24.0	)%
Stock based compensation	60		58		2			3.4	%	117		107		10			9.3	%
Other	708		822		(114		)	(13.9	)%	1,288		1,481		(193		)	(13.0	)%
Total cost of revenue	$	7,190	$	7,513	$	(323	)	(4.3	)%	$	14,226	$	15,528	$	(1,302	)	(8.4	)%
FTEs	190		184		6			3.3	%	190		184		6			3.3	%

As illustrated in the table above, total cost of revenue decreased$0.3 million for the three months ended June 30, 2017 compared to the same period in 2016 and decreased$1.3 million for the six months ended June 30, 2017 compared to the same period in 2016 primarily due to the following significant components and variances:

• Payroll and related — Payroll and related expenses were incurred largely for maintenance, support and service personnel and reflects the increase in staffing.

• Cost of sales — Cost of sales consisted primarily of third party software, use of third party resources for software implementation related work, inventory and maintenance of third party products. The decrease of $0.4 million and $1.2 million for the three and six months ended June 30, 2017 compared to the same period in 2016, respectively, was primarily attributable to the decrease in hardware revenue and lower usage of third party resources for professional services.

Research and Development. Research and development expenses consisted of the following items:

	For the Three Months Ended June 30,				Change				For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total		%		2017		2016		Total		%
Payroll and related	$	3,809	$	2,478	$	1,331	53.7	%	$	7,205	$	4,803	$	2,402	50.0	%
Outside services	659		580		79		13.6	%	1,176		1,008		168		16.7	%
Stock based compensation	65		48		17		35.4	%	120		88		32		36.4	%
Other	129		106		23		21.7	%	266		221		45		20.4	%
Total research and development	$	4,662	$	3,212	$	1,450	45.1	%	$	8,767	$	6,120	$	2,647	43.3	%
FTEs	109		78		31		39.7	%	109		78		31		39.7	%

As illustrated in the table above, research and development expenses increased$1.5 million for the three months ended June 30, 2017 compared to the same period in 2016 and increased$2.6 million for the six months ended June 30, 2017 compared to the same period in 2016 primarily due to the following significant components and variances:

• Payroll and related— Payroll and related expenses were incurred largely for product development personnel. The increase of $1.3 million and $2.4 million for the three and six months ended June 30, 2017 compared to the same period in 2016, respectively, in payroll and related was due primarily to an increase of 31 FTEs compared to the same period in the prior year reflecting our continued efforts to increase research and development associated with our software solutions. We intend to continue to substantially increase our research and development efforts as we continue to invest in our next generation software solutions. The Company is investing in the development of products in the areas of: 1) mobility, 2) a unified software platform, 3) nursing solutions, and 4) alerting. The Company plans to continue to increase its staffing to develop its integrated communications solution portfolio. This increase in staffing will substantially impact margins and our cash flow from operations as the benefits from this development effort will not immediately be realized for at least several years. Based on this emphasis we expect the number of FTEs to increase in this area, substantially impacting future payroll and related expenses.

• Outside services— The increase in outside services expense consisted primarily of third party developers working on our unified communications solutions for the three and six months ended June 30, 2017.

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Service, Rental and Maintenance. Service, rental and maintenance expenses consisted primarily of the following items:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Payroll and related	$	2,613	$	2,647	$	(34	)	(1.3	)%	$	5,284	$	5,393	$	(109	)	(2.0	)%
Site rent	3,604		3,668		(64		)	(1.7	)%	7,224		7,328		(104		)	(1.4	)%
Telecommunications	989		1,117		(128		)	(11.5	)%	2,058		2,330		(272		)	(11.7	)%
Stock based compensation	20		15		5			33.3	%	40		28		12			42.9	%
Other	718		740		(22		)	(3.0	)%	1,404		1,413		(9		)	(0.6	)%
Total service, rental and maintenance	$	7,944	$	8,187	$	(243	)	(3.0	)%	$	16,010	$	16,492	$	(482	)	(2.9	)%
FTEs	94		97		(3		)	(3.1	)%	94		97		(3		)	(3.1	)%

As illustrated in the table above, service, rental and maintenance expenses decreased$0.2 million for the three months ended June 30, 2017 compared to the same period in 2016 and decreased$0.5 million for the six months ended June 30, 2017 compared to the same period in 2016 primarily due to the following significant components and variances:

• Payroll and related — Payroll and related expenses were incurred largely for field technicians, their managers, in-house repair personnel and quality assurance personnel. The change in FTEs reflects our continued management of headcount to match the changes in our wireless revenue.

• Site rent — Site rent expenses consisted primarily of rent for transmitter locations used in our paging network. We anticipate continued rationalization of our networks, which will continue to decrease the number of transmitters required to provide service to our customers. The reduction in transmitters has reduced the number of lease locations. The number of active transmitters declined 2.7% from June 30, 2016 to June 30, 2017. As a result of rationalization of our networks we expect to continue to see a decline in site rent expenses over time.

• Telecommunications — Telecommunications expenses consisted primarily of expenses incurred to interconnect our paging networks and to provide telephone numbers for customer use, points of contact for customer service, and connectivity among our offices. We believe continued reductions in these expenses will occur as our networks continue to be consolidated as anticipated, through the remainder of 2017, and as we reduce telephone circuit inventory.

• Other — Other expenses consisted primarily of repairs and maintenance and outside services and includes management of these expenses to reflect the continued transition to support the growth in software revenue.

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Selling and Marketing. Selling and marketing expenses consisted of the following items:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Payroll and related	$	3,074	$	3,510	$	(436	)	(12.4	)%	$	6,177	$	7,175	$	(998	)	(13.9	)%
Commissions	1,121		1,559		(438		)	(28.1	)%	2,322		3,084		(762		)	(24.7	)%
Stock based compensation	99		75		24			32.0	%	199		123		76			61.8	%
Other	1,035		1,285		(250		)	(19.5	)%	2,553		2,575		(22		)	(0.9	)%
Total selling and marketing	$	5,329	$	6,429	$	(1,100	)	(17.1	)%	$	11,251	$	12,957	$	(1,706	)	(13.2	)%
FTEs	95		125		(30		)	(24.0	)%	95		125		(30		)	(24.0	)%

As illustrated in the table above, selling and marketing expenses decreased$1.1 million for the three months ended June 30, 2017 compared to the same period in 2016 and decreased$1.7 million for the six months ended June 30, 2017 compared to the same period in 2016 primarily due to the following significant components and variances:

• Payroll and related— Payroll and related expenses were incurred largely for sales and marketing personnel. The decrease in FTEs and related expense primarily reflects changes in our sales force as we manage the number of sales staff based on our expectations for the size of each addressable market.

• Commissions— Commissions expense relates to the payments made to the sales representatives responsible for executing contracts. Commissions are expensed as projects are implemented and are impacted by the level of software operations revenue. The decrease of $0.4 million and $0.8 million for the three and six months ended June 30, 2017 compared to the same period in 2016, respectively, in commissions is due primarily to lower software operations revenue compared to the same period in the prior year and to a lesser extent due to the continued impact from the change in the commission plan incentives made in 2015.

• Other — Other expenses consisted primarily of advertising, trade show, convention and related travel expenses and reflect our focus on identifying sales opportunities.

The sales and marketing staff are all involved in selling our communication solutions domestically and internationally. These expenses support our efforts to maintain gross placements of units in service, which mitigate the impact of disconnects on our wireless revenue base, and to identify business opportunities for additional or future software sales. We have a centralized marketing function, which is focused on supporting our products and vertical sales efforts by strengthening our brand, generating sales leads and facilitating the sales process. These marketing functions are accomplished through targeted email campaigns, website development, social media, webinars, regional and national user conferences, monthly newsletters and participation at industry trade shows.

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General and Administrative. General and administrative expenses consisted of the following items:

	For the Three Months Ended June 30,				Change					For the Six Months Ended June 30,				Change
(Dollars in thousands)	2017		2016		Total			%		2017		2016		Total			%
Payroll and related	$	4,486	$	4,306	$	180		4.2	%	$	8,928	$	8,698	$	230		2.6	%
Stock based compensation	754		534		220			41.2	%	1,477		1,022		455			44.5	%
Facility rent	869		810		59			7.3	%	1,688		1,649		39			2.4	%
Outside services	2,224		1,921		303			15.8	%	4,511		3,647		864			23.7	%
Taxes, licenses and permits	1,034		1,060		(26		)	(2.5	)%	2,024		2,115		(91		)	(4.3	)%
Other	2,572		1,808		764			42.3	%	5,021		3,815		1,206			31.6	%
Total general and administrative	$	11,939	$	10,439	$	1,500		14.4	%	$	23,649	$	20,946	$	2,703		12.9	%
FTEs	116		113		3			2.7	%	116		113		3			2.7	%

As illustrated in the table above, general and administrative expenses increased$1.5 million for the three months ended June 30, 2017 compared to the same period in 2016 and increased$2.7 million for the six months ended June 30, 2017 compared to the same period in 2016 primarily due to the following significant components and variances:

• Payroll and related — Payroll and related expenses were incurred for employees in information technology, administrative operations, finance, human resources and executive management and reflect the changes in the number of FTEs.

• Outside services— Outside service expenses consisted primarily of costs associated with professional services related to financial reporting, taxes and internal control compliance.

• Other— Other expenses consisted primarily of bad debt, insurance, shipping costs, financial services, office rent and utilities. The increase in other expenses was primarily due to an increase in computer replacements, maintenance contracts, financial services costs and recruiting expenses.

Severance. We incurred an immaterial amount of severance expense for the three and six months ended June 30, 2017 and 2016. Severance expense is included in General and Administrative - Other expenses.

Depreciation, Amortization and Accretion. Depreciation, amortization and accretion expenses were $2.9 million for the three months ended June 30, 2017 compared to $3.2 million for the same period in 2016 and $6.1 million for the six months ended June 30, 2017 compared to $6.6 million for the same period in 2016. (For additional details regarding depreciation, amortization and accretion expenses refer to Note 4, "Consolidated Financial Statement Components".)

Income Tax Expense

Income Tax Expense. Income tax expense decreased $1.2 million for the three months ended June 30, 2017 compared to the same period in 2016 and decreased $3.2 million for the six months ended June 30, 2017 compared to the same period in 2016. The change in the income tax expense for each period presented primarily relates to the decline in taxable income.

The following is the effective tax rate reconciliation for the three and six months ended June 30, 2017 and 2016, respectively:

	For the Three Months Ended June 30,								For the Six Months Ended June 30,
(Dollars in thousands)	2017				2016				2017				2016
Income before income tax expense	$	2,653			$	5,785			$	4,126			$	11,888
Income tax expense at the Federal statutory rate	$	928	35.0	%	$	2,025	35.0	%	$	1,444	35.0	%	$	4,161	35.0	%
State income taxes, net of Federal benefit	135		5.1	%	204		3.5	%	214		5.2	%	471		4.0	%
Other, including permanent differences	92		3.5	%	105		1.8	%	116		2.8	%	361		3.0	%
Income tax expense	$	1,155	43.5	%	$	2,334	40.3	%	$	1,774	43.0	%	$	4,993	42.0	%

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Liquidity and Capital Resources

Cash and Cash Equivalents

At June 30, 2017, we had cash and cash equivalents of $107.2 million. The available cash and cash equivalents are held in accounts managed by third-party financial institutions and consist of invested cash and cash in our operating accounts. The invested cash is invested in interest bearing funds managed by third-party financial institutions. These funds invest in direct obligations of the government of the United States. To date, we have experienced no loss or lack of access to our invested cash or cash equivalents; however, we can provide no assurance that access to our invested cash and cash equivalents will not be impacted by adverse market conditions.

At any point in time, we have approximately $7.0 to $12.0 million in our operating accounts that are with third-party financial institutions. While we monitor daily the cash balances in our operating accounts and adjust the cash balances as appropriate, these cash balances could be impacted if the underlying financial institutions fail or are subject to other adverse conditions in the financial markets. To date, we have experienced no loss or lack of access to cash in our operating accounts.

We intend to use our cash on hand to provide working capital, to support operations to invest in our business, and to return value to stockholders through cash dividends and possible repurchases of our common stock. We may also consider using cash to fund or complete opportunistic investments and acquisitions that we believe will provide a measure of growth or revenue stability while supporting our existing operations. Because we intend to increase substantially our investment in developing our integrated communications platform over the next two or three years commensurate with declining revenues from our wireless business, we anticipate that our cash on hand will decrease significantly during that period and possibly longer until revenues from our Spok Care Connect platform begin to be realized.

Overview

In the event that net cash provided by operating activities and cash on hand are not sufficient to meet future cash requirements, we may be required to reduce planned capital expenses, reduce or eliminate our cash dividends to stockholders, not resume our common stock repurchase program, and/or sell assets or seek outside financing. We can provide no assurance that reductions in planned capital expenses or proceeds from asset sales would be sufficient to cover shortfalls in available cash or that outside financing would be available on acceptable terms. As of June 30, 2017, our available cash on hand was $107.2 million.

Based on current and anticipated levels of operations, we anticipate net cash provided by operating activities, together with the available cash on hand at June 30, 2017, should be adequate to meet our anticipated cash requirements for the foreseeable future.

The following table sets forth information on our net cash flows from operating, investing, and financing activities for the periods stated:

	Six Months Ended June 30,						Change Between 2017 and 2016
(Dollars in thousands)	2017			2016
Net cash provided by operating activities	$	6,666		$	19,879		$	(13,213	)
Net cash used in investing activities	(5,198		)	(2,981		)	(2,217		)
Net cash used in financing activities	(20,133		)	(11,135		)	(8,998		)

Net Cash Provided by Operating Activities. As discussed above, we are dependent on cash flows provided by operating activities to meet our cash requirements. Cash provided by operating activities varies depending on changes in various working capital items including deferred revenue, accounts payable, accounts receivable, prepaid expenses and various accrued expenses. Net cash provided by operating activities decreased by $13.2 million for the six months ended June 30, 2017 compared to the same period in 2016. The decrease of $13.2 million is primarily related to a decrease in net income of $4.5 million (decrease in cash flow), a decrease in deferred income tax expense of $3.3 million (decrease in cash flow) and a net decrease in non-cash items, including depreciation, amortization and accretion and stock based compensation, of $0.3 million (decrease in cash flow). With respect to changes in assets and liabilities the net cash provided by operating activities reflects a $2.8 million higher decrease in accounts payable, accrued liabilities and other (decrease in cash flow), $1.4 million greater increase in deferred revenue (increase in cash flow) and a net $3.7 million greater decrease to assets (decrease in cash flow).

Net Cash Used in Investing Activities. Net cash used in investing activities increased by $2.2 million for the six months ended June 30, 2017 compared to the same period in 2016 due primarily to an increase in purchases of property and equipment associated with the Company's business expansion related to research and development.

Net Cash Used in Financing Activities. Net cash used in financing activities increased by $9.0 million for the six months ended June 30, 2017 compared to the same period in 2016 due to a $5.1 million increase in dividends paid and a $3.9 million increase in common stock repurchases.

26

Future Cash Dividends to Stockholders. On July 26, 2017, our Board of Directors declared a regular quarterly cash dividend of $0.125 per share of common stock with a record date of August 18, 2017, and a payment date of September 8, 2017. This cash dividend of approximately $2.5 million will be paid from available cash on hand.

Common Stock Repurchase Program. On April 26, 2017, the Company's Board of Directors authorized the repurchase of up to $10.0 million of the Company's common stock through 2017 on the open market or in privately negotiated transactions. This repurchase authority was fully used in the three months ended June 30, 2017. For additional details regarding the common stock repurchase program refer to Note 7, "Stockholders' Equity".

Other. For 2017, the Board of Directors currently expects to pay dividends of $0.125 per common share each quarter, subject to declaration by the Board of Directors.

Commitments and Contingencies

Operating Leases. We have operating leases for office and transmitter locations. Substantially all of these leases have lease terms ranging from one month to five years. We continue to review our office and transmitter locations, and intend to replace, reduce or consolidate leases, where possible. Total rent expense under operating leases was $4.5 million for the three months ended June 30, 2017 and 2016 and $8.9 million and $9.0 million for the six months ended June 30, 2017 and 2016, respectively.

Off-Balance Sheet Arrangements. We do not have any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. As such, we are not exposed to any financing, liquidity, market or credit risk that could arise if we had engaged in such relationships.

Commitments and Contingencies. See Note 10 to our Unaudited Notes to Condensed Consolidated Financial Statements in Part I of this Quarterly Report for further discussion on our commitments and contingencies.

Related Party Transactions

See Note 11 to our Unaudited Notes to Condensed Consolidated Financial Statements in Part I of this Quarterly Report for a discussion regarding our related party transactions.

Critical Accounting Policies and Estimates

The preceding discussion and analysis of financial condition and statement of income is based on our condensed consolidated financial statements, which have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of these condensed consolidated financial statements requires management to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosures. On an on-going basis, we evaluate estimates and assumptions, including but not limited to those related to the impairment of long-lived assets and intangible assets subject to amortization and goodwill, accounts receivable, revenue recognition, asset retirement obligations, and income taxes. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

There have been no changes to the critical accounting policies reported in the 2016 Annual Report that affect our significant judgments and estimates used in the preparation of our condensed consolidated financial statements.

27

Non-GAAP Financial Measures

We use non-GAAP financial measures as key elements in determining performance for purposes of incentive compensation for our annual 2017 Short-Term Incentive Plan ("STIP") and the performance periods for our LTIPs. The non-GAAP financial measures include; (1) adjusted operating cash flow (“OCF”), defined as EBITDA less purchases of property and equipment plus severance (the Company defines EBITDA as operating income plus depreciation, amortization and accretion, each determined in accordance with GAAP; purchases of property and equipment and severance are also determined in accordance with GAAP); and (2) the total of adjusted operating expenses and capital expenses. Adjusted operating expenses are defined as operating expenses less depreciation, amortization and accretion less severance less stock based compensation. Capital expenses are defined as the purchase of property and equipment.

For purposes of the LTIP performance periods for 2015-2017 and for 2016-2018, adjusted OCF was as follows for the periods stated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in thousands)	2017			2016			2017			2016
Net income	$	1,498		$	3,451		$	2,352		$	6,895
Plus: Income tax expense	1,155			2,334			1,774			4,993
Less: Other income	(89		)	(104		)	(58		)	(357		)
Less: Interest income	(154		)	(61		)	(276		)	(109		)
Operating income	2,410			5,620			3,792			11,422
Plus: Depreciation, amortization and accretion	2,851			3,235			6,074			6,558
EBITDA (as defined by the Company)	5,261			8,855			9,866			17,980
Less: Purchases of property and equipment	(2,353		)	(1,537		)	(5,204		)	(2,982		)
Plus: Severance	—			—			—			(4		)
Adjusted OCF (as defined by the Company)	$	2,908		$	7,318		$	4,662		$	14,994

For purposes of the 2017 STIP and the LTIP performance period for 2017-2019, adjusted operating expenses and capital expenses were as follows for the periods stated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in thousands)	2017			2016			2017			2016
Operating expenses	$	39,915		$	39,015		$	79,977		$	78,601
Less: Depreciation, amortization and accretion	(2,851		)	(3,235		)	(6,074		)	(6,558		)
Less: Severance	—			—			—			4
Less: Stock based compensation	(998		)	(730		)	(1,953		)	(1,368		)
Adjusted operating expenses (as defined by the Company)	36,066			35,050			71,950			70,679
Plus: Purchases of property and equipment	2,353			1,537			5,204			2,982
Adjusted operating and capital expenses (as defined by the Company)	$	38,419		$	36,587		$	77,154		$	73,661

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

As of June 30, 2017, we had no outstanding debt and no revolving credit facility.

Foreign Currency Exchange Rate Risk

We conduct a limited amount of business outside the United States. The financial impact of transactions billed in foreign currencies is immaterial to our financial results and, consequently, we do not have any material exposure to the risk of foreign currency exchange rate fluctuations.

28

ITEM 4.   CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management carried out an evaluation, as required by Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), with the participation of our principal executive officer and our principal financial officer, of the effectiveness of our disclosure controls and procedures, as of the end of our last fiscal quarter. Disclosure controls and procedures are defined under Rule 13a-15(e) under the Exchange Act as controls and other procedures of an issuer that are designed to ensure that the information required to be disclosed by the issuer in the reports that it files or submits under the Exchange Act (i) is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and (ii) is accumulated and communicated to the issuer’s management, including its principal executive officer and principal financial officer, or persons performing similar functions, as appropriate, to allow timely decisions regarding required disclosure. Based upon this evaluation, our principal executive officer and our principal financial officer have concluded that our disclosure controls and procedures were effective as of June 30, 2017.

Changes in Internal Control Over Financial Reporting

There were no changes made to the Company’s internal control over financial reporting during the three months ended June 30, 2017 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

29

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are involved, from time to time, in lawsuits arising in the normal course of business. We believe these pending lawsuits will not have a material adverse impact on our financial results or statement of income.

ITEM 1A. RISK FACTORS

The risk factors included in “Part I – Item 1A – Risk Factors” of the 2016 Annual Report have not materially changed during the quarter ended June 30, 2017.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND THE USE OF PROCEEDS

The following table presents information with respect to purchases made by the Company during the six months ended June 30, 2017:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of the Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Publicly Announced Plans or Programs
					(Dollars in thousands)
Beginning Balance					$	10,000
Three Months Ended June 30, 2017	572,550	$	17.47	572,550	—
Total	572,550	$	17.47	572,550

For additional details regarding purchases made by the Company refer to Note 7, "Stockholders' Equity".

30

ITEM 5. OTHER MATTERS.

(a). On July 24, 2017, Spok Holdings, Inc. (the “Company”) held its 2017 Annual Meeting of Stockholders (the “Annual Meeting”). There were 20,220,953 shares of common stock eligible to vote, of which 18,892,413 shares were represented in person or by proxy at the Annual Meeting. The purpose of the Annual Meeting was to elect seven directors; to ratify the appointment of Grant Thornton LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2017; to approve, on an advisory basis, the compensation of the Company’s named executive officers (the “NEOs”); to approve, on an advisory basis, the frequency of future say-on-pay votes; and to approve an amendment to the Company's 2012 equity incentive award plan. No other business was transacted.

Nominees for election to the Board of Directors were approved by a majority of the votes properly cast by holders of the common stock present in person or by proxy at the Annual Meeting, each share being entitled to one vote. Seven directors were elected to hold office until the next annual meeting and until their respective successors have been elected or appointed.

The Board considered the frequency of the say on pay recommendation by the stockholders, and determined to hold the say on pay vote annually for the next five years.

The results of the election of the directors; the ratification of the appointment of Grant Thornton LLP; the advisory vote on the compensation of the Company’s NEOs; the advisory vote on the frequency of future say-on-pay votes; and the amendment to the Company's 2012 equity incentive award plan; were as follows:

Election of Directors:	Votes For	Votes Withheld	Broker Non-Votes
N. Blair Butterfield	15,681,006	988,184	2,223,223
Stacia A. Hylton	15,672,058	997,132	2,223,223
Vincent D. Kelly	15,640,854	1,028,336	2,223,223
Brian O’Reilly	15,641,037	1,028,153	2,223,223
Matthew Oristano	15,641,265	1,027,925	2,223,223
Samme L. Thompson	15,636,891	1,032,299	2,223,223
Royce Yudkoff	15,632,746	1,036,444	2,223,223
Ratification of the Appointment of	Votes For	Votes Against	Abstentions	Broker Non-Votes
Grant Thornton LLP	17,845,413	994,068	52,932	—
Advisory Vote on the Approval of	Votes For	Votes Against	Abstentions	Broker Non-Votes
NEO Compensation	15,695,747	960,685	12,758	2,223,223
Advisory Vote on the Approval of	Votes For Every Year	Votes For Every Two Years	Votes For Every Three Years	Abstentions	Broker Non-Votes
Frequency of Future say-on-pay votes	10,564,026	11,782	5,190,915	902,467	2,223,223
Approve an Amendment to Company's	Votes For	Votes Against	Abstentions	Broker Non-Votes
2012 Equity Incentive Award Plan	15,419,073	1,233,528	16,589	2,223,223

ITEM 6. EXHIBITS

The exhibits listed in the accompanying Exhibit Index below are filed or incorporated by reference as part of this report.

31

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	SPOK HOLDINGS, INC.
Dated: July 27, 2017	/s/ Michael W. Wallace
	Name:	Michael W. Wallace
	Title:	Chief Financial Officer
		(Principal Financial Officer and duly authorized officer)

EXHIBIT INDEX

		Incorporated by Reference
Exhibit Number	Exhibit Description		Form	File No.	Exhibit	Filing Date	Filed/Furnished Herewith
10.1	Amendment to the USA Mobility, Inc. 2012 Equity Incentive Award Plan		DEF14-A	001-32358	A	4/27/2017
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended, dated July 27, 2017						Filed
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended, dated July 27, 2017						Filed
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350 dated July 27, 2017						Furnished
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350 dated July 27, 2017						Furnished
101.INS	XBRL Instance Document*						Furnished
101.SCH	XBRL Taxonomy Extension Schema*						Furnished
101.CAL	XBRL Taxonomy Extension Calculation*						Furnished
101.DEF	XBRL Taxonomy Extension Definition*						Furnished
101.LAB	XBRL Taxonomy Extension Labels*						Furnished
101.PRE	XBRL Taxonomy Extension Presentation*						Furnished

* The financial information contained in these XBRL documents is unaudited.

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Vincent D. Kelly, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Spok Holdings, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: July 27, 2017	/s/ Vincent D. Kelly
	Vincent D. Kelly
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Michael W. Wallace, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Spok Holdings, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: July 27, 2017	/s/ Michael W. Wallace
	Michael W. Wallace
	Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Spok Holdings, Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the period ended June 30, 2017 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: July 27, 2017	/s/ Vincent D. Kelly
	Vincent D. Kelly
	President and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Spok Holdings, Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the period ended June 30, 2017 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: July 27, 2017	/s/ Michael W. Wallace
	Michael W. Wallace
	Chief Financial Officer

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 21, 2017
Document Document And Entity Information [Abstract]
Entity Registrant Name	Spok Holdings, Inc
Entity Central Index Key	0001289945
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding (shares)		19,977,318

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 107,151	$ 125,816
Accounts receivable, net	24,452	23,666
Prepaid expenses and other	7,669	4,384
Inventory	1,642	1,996
Total current assets	140,914	155,862
Non-current assets:
Property and equipment, net	13,889	12,818
Goodwill	133,031	133,031
Intangible assets, net	9,166	10,803
Deferred income tax assets	72,018	73,068
Other non-current assets	2,204	2,505
Total non-current assets	230,308	232,225
TOTAL ASSETS	371,222	388,087
Current liabilities:
Accounts payable	1,554	1,909
Accrued compensation and benefits	11,310	13,268
Accrued dividends payable	342	5,140
Accrued taxes	2,658	4,132
Deferred revenue	31,807	29,145
Other current liabilities	2,820	2,733
Total current liabilities	50,491	56,327
Non-current liabilities:
Deferred revenue	651	752
Other non-current liabilities	8,570	8,921
Total non-current liabilities	9,221	9,673
TOTAL LIABILITIES	59,712	66,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	96,943	104,810
Retained earnings	214,565	217,275
TOTAL STOCKHOLDERS’ EQUITY	311,510	322,087
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 371,222	$ 388,087

XML

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Wireless	$ 25,639	$ 27,859	$ 51,499	$ 56,031
Software	16,686	16,776	32,270	33,992
Total revenue	42,325	44,635	83,769	90,023
Operating expenses:
Cost of revenue	7,190	7,513	14,226	15,528
Research and development	4,662	3,212	8,767	6,120
Service, rental and maintenance	7,944	8,187	16,010	16,492
Selling and marketing	5,329	6,429	11,251	12,957
General and administrative	11,939	10,439	23,649	20,946
Depreciation, amortization and accretion	2,851	3,235	6,074	6,558
Total operating expenses	39,915	39,015	79,977	78,601
Operating income	2,410	5,620	3,792	11,422
Interest income	154	61	276	109
Other income	89	104	58	357
Income before income tax expense	2,653	5,785	4,126	11,888
Income tax expense	(1,155)	(2,334)	(1,774)	(4,993)
Net income	$ 1,498	$ 3,451	$ 2,352	$ 6,895
Basic net income per common share (usd per share)	$ 0.07	$ 0.17	$ 0.12	$ 0.33
Diluted net income per common share (usd per share)	$ 0.07	$ 0.17	$ 0.11	$ 0.33
Basic weighted average common shares outstanding (shares)	20,353,801	20,568,058	20,441,781	20,637,070
Diluted weighted average common shares outstanding (shares)	20,366,102	20,568,058	20,508,473	20,637,070
Cash dividends declared per common share (usd per share)	$ 0.125	$ 0.125	$ 0.25	$ 0.25

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows provided by operating activities:
Net income	$ 2,352	$ 6,895
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	6,074	6,558
Deferred income tax expense	1,069	4,346
Stock based compensation	1,953	1,368
Provision for doubtful accounts, service credits and other	458	321
Adjustment of non-cash transaction taxes	(700)	(169)
Changes in assets and liabilities:
Accounts receivable	(1,242)	(1,421)
Prepaid expenses, inventory, intangibles and other assets	(2,684)	1,197
Accounts payable, accrued liabilities and other	(3,175)	(342)
Deferred revenue	2,561	1,126
Net cash provided by operating activities	6,666	19,879
Cash flows used in investing activities:
Purchase of property and equipment, net of proceeds from disposals of property and equipment	(5,198)	(2,981)
Net cash used in investing activities	(5,198)	(2,981)
Cash flows used in financing activities:
Cash distributions to stockholders	(10,239)	(5,150)
Purchase of common stock (including commissions), net of proceeds from issuance of common stock	(9,894)	(5,985)
Net cash used in financing activities	(20,133)	(11,135)
Net (decrease) increase in cash and cash equivalents	(18,665)	5,763
Cash and cash equivalents, beginning of period	125,816	111,332
Cash and cash equivalents, end of period	107,151	117,095
Supplemental disclosure:
Income taxes paid	$ 1,964	$ 598

XML

Organization and Significant Accounting Policies

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Significant Accounting Policies

ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

Spok Holdings, Inc. (NASDAQ: SPOK) ("Spok" or the "Company") through its wholly-owned subsidiary Spok, Inc., is the global leader in healthcare communications. We deliver clinical information to care teams when and where it matters most to improve patient outcomes. Many hospitals rely on the Spok Care Connect platform to enhance workflows for clinicians, support administrative compliance, and provide a better experience for patients. Our customers send over 100 million messages each month through their Spok solutions.

We offer a focused suite of unified critical communication solutions that include call center operations, clinical alerting and notifications, one-way and advanced two-way wireless messaging services, mobile communications and public safety solutions.

We provide one-way and advanced two-way wireless messaging services including information services throughout the United States. These services are offered on a local, regional and nationwide basis employing digital networks. One-way messaging consists of numeric and alphanumeric messaging services. Numeric messaging services enable subscribers to receive messages that are composed entirely of numbers, such as a phone number, while alphanumeric messages may include numbers and letters, which enable subscribers to receive text messages. Two-way messaging services enable subscribers to send and receive messages to and from other wireless messaging devices, including pagers, personal digital assistants and personal computers. We also offer voice mail, personalized greeting, message storage and retrieval, and equipment loss and/or maintenance protection to both one-way and two-way messaging subscribers. These services are commonly referred to as wireless messaging and information services.

We also develop, sell and support enterprise-wide systems for hospitals and other organizations needing to automate, centralize and standardize mission critical communications. These solutions are used for contact centers, clinical alerting and notification, mobile communications and messaging and for public safety notifications. These areas of market focus complement the market focus of our wireless services outlined above. These products and services are commonly referred to as software solutions and services.

Basis of Presentation

The accompanying condensed consolidated financial statements include our accounts and the accounts of our wholly-owned direct and indirect subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Our condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). In management's opinion, the unaudited condensed consolidated financial statements include all adjustments and accruals that are necessary for a fair presentation of the results of all interim periods reported herein and all such adjustments are of a normal, recurring nature.

Amounts shown on the condensed consolidated statements of income within the operating expense categories of cost of revenue; research and development; service, rental and maintenance; selling and marketing; and general and administrative are recorded exclusive of depreciation, amortization and accretion. These items are shown separately on the condensed consolidated statements of income within operating expenses. Foreign currency translation adjustments were immaterial and are not presented separately in our condensed consolidated financial statements and consequently no statements of comprehensive income are presented.

Certain prior period amounts in the condensed consolidated financial statements have been reclassified to conform to the current period's presentation. These reclassifications had no effect on the reported results of operations. In the fourth quarter 2016, the Company concluded that it was appropriate to separately state those operating expenses related to research and development. Previously those expenses had been classified under the Service, Rental and Maintenance operating category. Corresponding reclassifications were made to the condensed consolidated statements of income for the three and six months ended June 30, 2016. This change in classification has no effect on the previously reported condensed consolidated statements of income for any period.

The financial information included herein, other than the condensed consolidated balance sheet as of December 31, 2016, is unaudited. The condensed consolidated balance sheet at December 31, 2016 has been derived from, but does not include, all the disclosures contained in the audited consolidated financial statements as of and for the year ended December 31, 2016.

These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Annual Report”). The condensed consolidated statements of income for the interim periods presented are not necessarily indicative of the results that may be expected for a full year.

Use of Estimates

The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. On an on-going basis, we evaluate estimates and assumptions, including but not limited to those related to the impairment of long-lived assets, intangible assets subject to amortization and goodwill, accounts receivable allowances, revenue recognition, depreciation expense, asset retirement obligations, severance and income taxes. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

XML

Risks and Other Important Factors

6 Months Ended

Jun. 30, 2017

Risks and Uncertainties [Abstract]

Risks and Other Important Factors

RISKS AND OTHER IMPORTANT FACTORS

See “Item 1A. Risk Factors” of Part II of this Quarterly Report on Form 10-Q (“Quarterly Report”) and "Item 1A. Risk Factors" of Part I of the 2016 Annual Report, which describes key risks associated with our operations and industry.

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Recent and Pending Accounting Standards

6 Months Ended

Jun. 30, 2017

Accounting Changes and Error Corrections [Abstract]

Recent and Pending Accounting Standards

RECENT AND PENDING ACCOUNTING STANDARDS

Revenue

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. Since this ASU was issued, the FASB has issued several updates including ASU No. 2015-14 in July 2015 which delayed the effective date, ASU No. 2016-08 in March 2016 which updated guidance related to principal versus agent considerations, ASU No. 2016-10 in April 2016 which updated guidance related to the identification of performance obligations, ASU No. 2016-12 in May 2016 which updated guidance related to scope improvements and practical expedients and ASU No. 2016-20 which provided technical corrections and improvements but did not update guidance issued in prior updates. The effective date is January 1, 2018, and while early adoption to the original effective date of January 1, 2017 is permitted, we have elected not to early adopt.

ASU No. 2014-09 creates a five-step model that requires companies to exercise judgment when considering all relevant facts and circumstances in the determination of when and how revenue is recognized. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. We have completed our review of the acceptable transition methods and have selected the modified retrospective approach. We currently believe the modified retrospective approach will have a material impact on both deferred revenue and retained earnings in our 2018 consolidated financial statements.

We currently believe the standard will materially impact our revenue recognition on a going-forward basis once adopted. While we continue to assess the potential impacts of this standard, we currently believe that the most significant impact relates to our accounting for software license revenue. We expect software license revenue to be recognized at the time of shipment rather than over a combined service period or term period. Due to the nuances of certain contracts the actual revenue recognition treatment required under the standard will be dependent on contract-specific terms and may vary in some instances from recognition at the time that software is made available to the customer.

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard establishes a right of use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either financing or operating with the classification affecting the pattern of expense recognition in the income statement.

ASU No. 2016-02 will be effective for fiscal years beginning on January 1, 2019, including the related interim periods and early adoption of the standard is permitted. A modified retrospective transition approach is required for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. While we are still evaluating the impact of the potential new standard on our consolidated financial statements, we expect that upon adoption we will recognize ROU assets and lease liabilities and that the amounts could be material.

Goodwill

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. The new standard simplifies how an entity tests for goodwill by eliminating Step 2 from the goodwill impairment test. Step 2 measured a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. By eliminating Step 2 an entity must now record an impairment to goodwill based on an analysis of the fair value of a reporting unit as compared to its carrying amount. An impairment charge is recognized for the amount that the carrying value exceeds the reporting unit's fair value.

ASU No. 2017-04 will be effective for fiscal years beginning on January 1, 2020, including interim periods within those fiscal years, and early adoption as of January 1, 2017 is permitted. All changes are to be accounted for on a prospective basis upon adoption. We do not believe adoption of ASU No. 2017-04 will have a material impact on our consolidated financial statements. We have not yet determined whether we will early adopt ASU No. 2017-04.

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Consolidated Financial Statement Components

6 Months Ended

Jun. 30, 2017

Supplemental Financial Statement Components [Abstract]

Consolidated Financial Statement Components

CONSOLIDATED FINANCIAL STATEMENT COMPONENTS

Prepaid Expenses and Other

Prepaid expenses and other consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Prepaid repairs and maintenance	$	2,312	$	1,561
Prepaid rent	1,559		208
Prepaid commissions	1,469		594
Prepaid taxes	792		100
Other prepaid expenses	1,537		1,921
Total prepaid expenses and other	$	7,669	$	4,384

Depreciation, Amortization and Accretion

Depreciation, amortization and accretion expenses consisted of the following for the periods stated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in thousands)	2017			2016			2017			2016
Depreciation
Leasehold improvements	$	75		$	52		$	125		$	98
Asset retirement costs	(97		)	(69		)	(195		)	(140		)
Paging and computer equipment	2,028			1,992			4,087			3,995
Furniture, fixtures and vehicles	76			69			141			148
Total depreciation	2,082			2,044			4,158			4,101
Amortization	629			1,035			1,636			2,146
Accretion	140			156			280			311
Total depreciation, amortization and accretion expense	$	2,851		$	3,235		$	6,074		$	6,558

Accounts Receivable, Net

Accounts receivable was recorded net of an allowance of $1.1 million at June 30, 2017 and December 31, 2016.

Property and Equipment, Net

Property and equipment, net consisted of the following as of the date stated:

(Dollars in thousands)	Useful Life (In Years)	June 30, 2017			December 31, 2016
Leasehold improvements	lease term	$	4,051		$	3,843
Asset retirement costs	1-5	3,289			3,263
Paging and computer equipment	1-5	112,800			113,175
Furniture, fixtures and vehicles	3-5	4,447			2,852
Total property and equipment		124,587			123,133
Accumulated depreciation		(110,698		)	(110,315		)
Total property and equipment, net		$	13,889		$	12,818

Other Current Liabilities

Other current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Accrued outside services	$	1,057	$	975
Accrued accounting and legal	678		467
Accrued network costs	644		773
Deferred rent and other	255		433
Asset retirement obligations	186		85
Total other current liabilities	$	2,820	$	2,733

Other Non-Current Liabilities

Other non-current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Asset retirement obligations	$	7,548	$	7,472
Deferred rent and other	893		942
Dividends payable	129		507
Total other non-current liabilities	$	8,570	$	8,921

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Intangible Assets, Net

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

INTANGIBLE ASSETS, NET

Intangible Assets

Amortizable intangible assets at June 30, 2017 related primarily to customer relationships that resulted from our acquisition of Amcom Software, Inc. in 2011. Such intangibles are being amortized over a period of ten years.

The net consolidated balance of intangible assets consisted of the following at June 30, 2017:

		June 30, 2017
(Dollars in thousands)	Useful Life (In Years)	Gross Carrying Amount		Accumulated Amortization			Net Balance
Customer relationships	10	$	25,002	$	(15,836	)	$	9,166
Total amortizable intangible assets	10	$	25,002	$	(15,836	)	$	9,166

Estimated amortization of intangible assets for future periods was as follows:

	(Dollars in thousands)
For the remaining six months ending December 31, 2017	$	1,250
For the year ending December 31:
2018	2,500
2019	2,500
2020	2,500
2021	416
Total amortizable intangible assets	$	9,166

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Asset Retirement Obligations

6 Months Ended

Jun. 30, 2017

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

ASSET RETIREMENT OBLIGATIONS

The components of the changes in the asset retirement obligation liabilities were:

(Dollars in thousands)	Short-Term Portion			Long-Term Portion			Total
Balance at January 1, 2017	$	85		$	7,472		$	7,557
Accretion	4			276			280
Amounts paid	(129		)	—			(129		)
Asset additions recorded, net	—			26			26
Reclassifications	226			(226		)	—
Balance at June 30, 2017	$	186		$	7,548		$	7,734

The balances above were included within other current liabilities and other non-current liabilities, respectively, at June 30, 2017.

Increases and reductions other than accretion, reclassification and amounts paid primarily relate to changes in estimate of the underlying liability, specifically as it relates to updates in estimated costs to remove a transmitter and the estimated timing of removal. The cost associated with the estimated removal costs and timing refinements due to ongoing network rationalization activities is expected to accrete to a total liability of $9.0 million. The total estimated liability is based on the transmitter locations remaining after we have consolidated the number of networks we operate and assume the underlying leases continue to be renewed to that future date.

Accretion expense was $0.3 million for the six months ended June 30, 2017 and 2016. Accretion expense related solely to asset retirement obligations and was recorded based on the interest method.

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Stockholders' Equity

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS' EQUITY

General

Our authorized capital stock consists of 75 million shares of common stock, par value $0.0001 per share, and 25 million shares of preferred stock, par value $0.0001 per share.

At June 30, 2017 and December 31, 2016, we had no stock options outstanding.

At June 30, 2017 and December 31, 2016, there were 19,972,094 and 20,525,614 shares of common stock outstanding, respectively, and no shares of preferred stock outstanding.

Changes in Stockholders' Equity

Changes in stockholders’ equity for the six months ended June 30, 2017 consisted of the following:

	(Dollars in thousands)
Balance at January 1, 2017	$	322,087
Net income for the six months ended June 30, 2017	2,352
Cash dividends declared	(5,221		)
Common stock repurchase program	(10,024		)
Amortization of stock based compensation	1,953
Other	363
Balance at June 30, 2017	$	311,510

Dividends

The following table details our cash dividend payments made in 2017. Cash dividends paid as disclosed in the condensed consolidated statements of cash flows for the six months ended June 30, 2017 and 2016 include previously declared cash dividends on shares of vested restricted common stock ("restricted stock") issued to our non-executive directors and dividends related to vested restricted stock units ("RSUs") issued to eligible employees. Cash dividends on RSUs and restricted stock have been accrued and are paid when the applicable vesting conditions are met. Accrued cash dividends on forfeited restricted stock and RSUs are also forfeited.

Declaration Date	Record Date	Payment Date	Per Share Amount		Total Payment(1)
					(Dollars in thousands)
December 20, 2016	January 4, 2017	January 17, 2017	$	0.250	$	5,128
March 1, 2017	March 17, 2017	March 30, 2017	0.125		2,566
April 26, 2017	May 23, 2017	June 23, 2017	0.125		2,545
	Total		$	0.500	$	10,239

(1) The total payment reflects the cash dividends paid in relation to common stock and vested restricted stock.

On July 26, 2017, our Board of Directors declared a regular quarterly cash dividend of $0.125 per share of common stock with a record date of August 18, 2017, and a payment date of September 8, 2017. This cash dividend of approximately $2.5 million will be paid from available cash on hand.

Common Stock Repurchase Program

On April 26, 2017, the Company's Board of Directors authorized the repurchase of up to $10.0 million of the Company's common stock through 2017 on the open market or in privately negotiated transactions. The Company used the entire $10.0 million of repurchase authority by June 30, 2017. The following table presents information with respect to purchases made by the Company during the six months ended June 30, 2017:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of the Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Publicly Announced Plans or Programs
					(Dollars in thousands)
Beginning Balance					$	10,000
Three Months Ended June 30, 2017	572,550	17.47		572,550	—
Total	572,550	$	17.47	572,550

Net Income per Common Share

Basic net income per common share is computed on the basis of the weighted average common shares outstanding. Diluted net income per common share is computed on the basis of the weighted average common shares outstanding plus the effect of all potentially dilutive common shares including outstanding restricted stock and RSUs, which are treated as contingently issuable shares, using the “treasury stock” method.

The Company has determined, based on the provisions of the 2015 Long-Term Incentive Plan ("2015 LTIP"), that unvested RSUs do not currently meet, nor have they met since issuance, the criteria to be considered dilutive. Therefore, we have excluded them from the calculation of both diluted net income per common share as well as the diluted weighted average shares of common stock and common stock equivalents for the three and six months ended June 30, 2017 and removed them from the comparative information for the three and six months ended June 30, 2016. This correction is immaterial to our financial statements and corresponding disclosures.

Our second quarter 2017 interim condensed consolidated financial statements reflect this determination within the calculation of basic and diluted weighted average shares outstanding and earnings per share for the three and six months ended June 30, 2017 and 2016.

We assessed the materiality of these changes on our 2016 financial statements in accordance with SEC Staff Accounting Bulletin ("SAB") No. 99, Materiality, codified in Accounting Standards Codification ("ASC") 250, Presentation of Financial Statements, and concluded that they were not material to any prior annual or interim periods. We have corrected the second quarter 2016 by revising the second quarter 2016 interim condensed consolidated financial statements and other financial information included herein. Future periods will be revised, as applicable.

The components of basic and diluted net income per common share were as follows for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(in thousands, except for share and per share amounts)	2017		2016		2017		2016
Numerator:
Net income	$	1,498	$	3,451	$	2,352	$	6,895
Denominator:
Weighted average shares used to compute net income per common share - basic	20,353,801		20,568,058		20,441,781		20,637,070
Weighted average shares used to compute net income per common share - diluted	20,366,102		20,568,058		20,508,473		20,637,070
Basic net income per common share	$	0.07	$	0.17	$	0.12	$	0.33
Diluted net income per common share	$	0.07	$	0.17	$	0.11	$	0.33

Spok Holdings, Inc. Equity Incentive Award Plan

The following table summarizes the activities under the 2012 Equity Incentive Award Plan ("2012 Equity Plan") from January 1, 2017 through June 30, 2017:

	Activity
Total equity securities available at January 1, 2017	1,246,939
Less: 2015 Performance-Based LTIP RSUs awarded to eligible employees, net of forfeitures	112,202
Less: 2017 Time-Based LTIP RSUs awarded to eligible employees, net of forfeitures	117,471
Less: Restricted stock awarded to non-executive members of the Board of Directors	10,047
Total equity securities available at June 30, 2017	1,007,219

On July 24, 2017 the Company's stockholders approved an amendment to our 2012 Equity Plan to: (i) expand the list of performance criteria that may be used for purposes of granting performance awards under the 2012 Equity Plan, and (ii) limit the annual value awards that may be granted to the Company's non-employee directors to $750,000 per year, subject to limited exceptions as described in the amendment. The approval of the amendment was intended to satisfy the stockholder approval requirements under Section 162(m) of the Internal Revenue Code.

2015 Long Term Incentive Plan. On December 9, 2014, our Board of Directors adopted the 2015 LTIP (which provides for a 36-month vesting period) that included a stock component in the form of RSUs. Under this incentive program, RSUs will be granted to eligible employees annually and each annual grant will generally vest over a three-year service period. Each annual grant includes performance metrics required to be met for vesting purposes, as established by the Board of Directors. Our Board of Directors also approved that future cash dividends related to the RSUs will be set aside and paid in cash to each eligible employee when the RSUs are converted into shares of common stock. RSUs would be converted into shares of common stock on the earlier of a change in control of the Company (as defined in the 2015 LTIP) or on or after the third business day following the day that we file the Annual Report on Form 10-K with the SEC for the grant's final vesting year, but in no event later than December 31 of the year following the vesting date if the pre-established performance conditions are achieved. Any unvested RSUs awarded under the 2015 LTIP and the related cash dividends are forfeited if the participant terminates employment with the Company.

On January 2, 2015, our Board of Directors granted 254,777 RSUs with a grant date fair value of $4.4 million. An additional 6,123 RSUs were granted to eligible employees who were promoted or joined the Company during the twelve months ended December 31, 2015. On January 28, 2016, our Board of Directors issued a second grant of 227,082 RSUs with a grant date fair value of $3.8 million. An additional 7,629 RSUs were granted to eligible employees who were promoted or joined the Company during the twelve months ended December 31, 2016. On January 2, 2017, our Board of Directors issued a third grant of 108,428 RSUs with a grant date fair value of $2.2 million. An additional 10,039 RSUs were issued to eligible employees who were promoted or joined the Company during the six months ended June 30, 2017. All issuances were made to eligible employees under the 2012 Equity Plan for the 2015 LTIP pursuant to a Restricted Stock Unit Agreement. Eligible employees have the opportunity to earn RSUs based upon continued employment with the Company and the achievement of performance goals established by our Board of Directors for our consolidated revenue and operating cash flows (as defined by the Company) during the period of January 1, 2015 through December 31, 2017 (“the 2015-2017 performance period”) for the 2015 grant, the period of January 1, 2016 through December 31, 2018 ("the 2016-2018 performance period") for the 2016 grant, and January 1, 2017 through December 31, 2019 ("the 2017-2019 performance period") for the 2017 grant, respectively. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

The following table details activities with respect to RSUs issued and outstanding under the 2015 LTIP for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	451,493		$	17.10
Granted	118,467		20.52
Vested	—		—
Forfeited	(6,265	)	17.52
Non-vested RSUs at June 30, 2017	563,695		$	17.81	$	3,264	18

2017 Time Based Long Term Incentive Plan. On January 2, 2017, our Board of Directors granted 108,394 RSUs with a grant date fair value of $2.2 million. An additional 10,039 shares were issued to eligible employees who were promoted or joined the Company during the six months ended June 30, 2017. Our Board of Directors also approved that future cash dividends related to the RSUs will be set aside and paid in cash to each eligible employee when the RSUs are converted into shares of common stock. These RSUs vest one third on December 31, 2017, December 31, 2018 and December 31, 2019. RSUs would be converted into shares of common stock on the earlier of a change in control of the Company (as defined in the 2012 Equity Plan) or on or after the third business day following the day that we file the Annual Report on Form 10-K with the SEC for the grant's vesting years, but in no event later than December 31 of the year following the vesting date. Any unvested RSUs awarded under the 2017 time based grant and the related cash dividends are forfeited if the participant terminates employment with the Company. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

The following table details activities with respect to RSUs issued and outstanding under the 2017 time based LTIP grant for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	—		$	—
Granted	118,433		20.52
Vested	—		—
Forfeited	(962	)	20.75
Non-vested RSUs at June 30, 2017	117,471		$	20.52	$	1,696	18

Employee Stock Purchase Plan. On July 25, 2016, our stockholders approved the registration with the SEC of 250,000 shares of common stock, to be issued from time to time in connection with purchases under the Spok Holdings, Inc. 2016 Employee Stock Purchase Plan ("ESPP"). Shares were first offered for purchase under the ESPP during the third quarter of 2016. Under the ESPP, eligible participants can voluntarily elect to have contributions withheld from their pay for the duration of an offering period, subject to the ESPP limits. At the end of an offering period, contributions will be used to purchase the Company's common stock at a discount to the market price based on the first or last day of the offering period, whichever is lower. Participants are required to hold common stock for a minimum period of two years from the grant date. Participants will begin earning dividends on shares after the purchase date. Each offering period will generally last for no longer than six months. Once an offering period begins, participants cannot adjust their withholding amount. If a participant chooses to withdraw, any previously withheld funds will be returned to the participant, with no stock purchased, and that participant will be eligible to participate in the ESPP at the next offering period. If the participant terminates employment with the Company during the offering period, all contributions will be returned to the employee and no stock will be purchased at a discounted rate. For the three and six months ended June 30, 2017, 8,983 shares of common stock were purchased for a total cost of $0.1 million. No shares were purchased during the corresponding time periods in 2016. The following table summarizes the activities under the ESPP from January 1, 2017 through June 30, 2017:

	Activity
Total ESPP equity securities available at January 1, 2017	246,039
Less: ESPP common stock purchased by eligible employees	8,983
Total ESPP securities available at June 30, 2017	237,056

Amounts withheld from participants will be classified as a liability on the balance sheet until funds are used to purchase shares. This liability amount is immaterial to the overall financial statements. (For additional details regarding stock compensation refer to Note 9, "Stock Based Compensation".)

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Income Taxes

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

Spok files a consolidated U.S. Federal income tax return and income tax returns in various state, local and foreign jurisdictions as required.

At June 30, 2017, we had total deferred income tax assets ("DTAs") of $72.0 million and no valuation allowance. This reflects a change from the December 31, 2016 balance of DTAs of $73.1 million and no valuation allowance. The change from December 31, 2016 to June 30, 2017 reflects the expected usage of the DTAs to offset expected 2017 taxable income and changes in tax rates.

We consider both positive and negative evidence when evaluating the recoverability of our DTAs. The assessment is required to determine whether based on all available evidence, it is more likely than not (i.e., greater than a 50% probability) whether all or some portion of the DTAs will be realized in the future. During the fourth quarter of each year, we update our multi-year forecast of taxable income for our operations which assists in analyzing the recoverability of our DTAs.

The anticipated effective income tax rate is expected to continue to differ from the Federal statutory rate of 35% primarily due to the effect of state income taxes, the effect of changes to the DTA valuation allowance, permanent differences between book and taxable income and certain discrete items.

As of January 1, 2017, we had approximately $126 million of Federal Net Operating Losses ("NOLs") available to offset future taxable income.

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Stock Based Compensation

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation

STOCK BASED COMPENSATION

We record all stock-based awards, which consist of RSUs, restricted stock and the option to purchase common stock under the ESPP, at fair value as of the grant date. Stock based compensation expense is recognized based on a straight-line amortization basis over the respective service period. Forfeitures and withdrawals are accounted for on an as incurred basis.

The following table reflects the items for stock based compensation expense on the condensed consolidated statements of income for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Dollars in thousands)	2017		2016		2017		2016
2015 LTIP (performance-based)	$	508	$	622	$	998	$	1,153
2017 LTIP (time-based)	371		—		714		—
ESPP	15		—		30		—
Board of Directors restricted stock	104		108		211		215
Total stock based compensation expense	$	998	$	730	$	1,953	$	1,368

In the fourth quarter of 2016 we determined that only 50% of the 2015 and 2016 grants made under the 2015 LTIP were expected to vest based on the related performance criteria and our assessment of the anticipated future performance applied to the performance criteria. As such, expenses listed in the table above reflect only the portion of grants and related expense that we anticipate will vest for those awards.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

There have been no material changes during the six months ended June 30, 2017 to the commitments and contingencies previously reported in the 2016 Annual Report.

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Related Parties

6 Months Ended

Jun. 30, 2017

Related Party Transactions [Abstract]

Related Parties

RELATED PARTIES

A member of our Board of Directors also serves as a director for an entity that leases transmission tower sites to the Company. For the three months ended June 30, 2017 and 2016, we incurred site rent expenses of $1.0 million and for the six months ended June 30, 2017 and 2016, we incurred site rent expenses of $2.0 million from the entity on which the individual serves as a director. Site rent expenses are included in service, rental and maintenance expenses.

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Organization and Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying condensed consolidated financial statements include our accounts and the accounts of our wholly-owned direct and indirect subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Our condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). In management's opinion, the unaudited condensed consolidated financial statements include all adjustments and accruals that are necessary for a fair presentation of the results of all interim periods reported herein and all such adjustments are of a normal, recurring nature.

Amounts shown on the condensed consolidated statements of income within the operating expense categories of cost of revenue; research and development; service, rental and maintenance; selling and marketing; and general and administrative are recorded exclusive of depreciation, amortization and accretion. These items are shown separately on the condensed consolidated statements of income within operating expenses. Foreign currency translation adjustments were immaterial and are not presented separately in our condensed consolidated financial statements and consequently no statements of comprehensive income are presented.

Certain prior period amounts in the condensed consolidated financial statements have been reclassified to conform to the current period's presentation. These reclassifications had no effect on the reported results of operations. In the fourth quarter 2016, the Company concluded that it was appropriate to separately state those operating expenses related to research and development. Previously those expenses had been classified under the Service, Rental and Maintenance operating category. Corresponding reclassifications were made to the condensed consolidated statements of income for the three and six months ended June 30, 2016. This change in classification has no effect on the previously reported condensed consolidated statements of income for any period.

The financial information included herein, other than the condensed consolidated balance sheet as of December 31, 2016, is unaudited. The condensed consolidated balance sheet at December 31, 2016 has been derived from, but does not include, all the disclosures contained in the audited consolidated financial statements as of and for the year ended December 31, 2016.

These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Annual Report”). The condensed consolidated statements of income for the interim periods presented are not necessarily indicative of the results that may be expected for a full year.

Use of Estimates

Use of Estimates

The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. On an on-going basis, we evaluate estimates and assumptions, including but not limited to those related to the impairment of long-lived assets, intangible assets subject to amortization and goodwill, accounts receivable allowances, revenue recognition, depreciation expense, asset retirement obligations, severance and income taxes. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

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Consolidated Financial Statement Components (Tables)

6 Months Ended

Jun. 30, 2017

Supplemental Financial Statement Components [Abstract]

Prepaid Expenses and Other

Prepaid expenses and other consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Prepaid repairs and maintenance	$	2,312	$	1,561
Prepaid rent	1,559		208
Prepaid commissions	1,469		594
Prepaid taxes	792		100
Other prepaid expenses	1,537		1,921
Total prepaid expenses and other	$	7,669	$	4,384

Summary of Depreciation, Amortization and Accretion

Depreciation, amortization and accretion expenses consisted of the following for the periods stated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
(Dollars in thousands)	2017			2016			2017			2016
Depreciation
Leasehold improvements	$	75		$	52		$	125		$	98
Asset retirement costs	(97		)	(69		)	(195		)	(140		)
Paging and computer equipment	2,028			1,992			4,087			3,995
Furniture, fixtures and vehicles	76			69			141			148
Total depreciation	2,082			2,044			4,158			4,101
Amortization	629			1,035			1,636			2,146
Accretion	140			156			280			311
Total depreciation, amortization and accretion expense	$	2,851		$	3,235		$	6,074		$	6,558

Property, Plant and Equipment

Property and equipment, net consisted of the following as of the date stated:

(Dollars in thousands)	Useful Life (In Years)	June 30, 2017			December 31, 2016
Leasehold improvements	lease term	$	4,051		$	3,843
Asset retirement costs	1-5	3,289			3,263
Paging and computer equipment	1-5	112,800			113,175
Furniture, fixtures and vehicles	3-5	4,447			2,852
Total property and equipment		124,587			123,133
Accumulated depreciation		(110,698		)	(110,315		)
Total property and equipment, net		$	13,889		$	12,818

Components of Other Current Liabilities

Other current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Accrued outside services	$	1,057	$	975
Accrued accounting and legal	678		467
Accrued network costs	644		773
Deferred rent and other	255		433
Asset retirement obligations	186		85
Total other current liabilities	$	2,820	$	2,733

Summary of Other Non-Current Liabilities

Other non-current liabilities consisted of the following as of the date stated:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Asset retirement obligations	$	7,548	$	7,472
Deferred rent and other	893		942
Dividends payable	129		507
Total other non-current liabilities	$	8,570	$	8,921

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Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Net Consolidated Balance of Amortizable Intangible Assets

The net consolidated balance of intangible assets consisted of the following at June 30, 2017:

		June 30, 2017
(Dollars in thousands)	Useful Life (In Years)	Gross Carrying Amount		Accumulated Amortization			Net Balance
Customer relationships	10	$	25,002	$	(15,836	)	$	9,166
Total amortizable intangible assets	10	$	25,002	$	(15,836	)	$	9,166

Estimated Amortization of Intangible Assets

Estimated amortization of intangible assets for future periods was as follows:

	(Dollars in thousands)
For the remaining six months ending December 31, 2017	$	1,250
For the year ending December 31:
2018	2,500
2019	2,500
2020	2,500
2021	416
Total amortizable intangible assets	$	9,166

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Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2017

Asset Retirement Obligation Disclosure [Abstract]

Changes in Asset Retirement Obligation Liabilities

The components of the changes in the asset retirement obligation liabilities were:

(Dollars in thousands)	Short-Term Portion			Long-Term Portion			Total
Balance at January 1, 2017	$	85		$	7,472		$	7,557
Accretion	4			276			280
Amounts paid	(129		)	—			(129		)
Asset additions recorded, net	—			26			26
Reclassifications	226			(226		)	—
Balance at June 30, 2017	$	186		$	7,548		$	7,734

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Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Changes in Stockholders' Equity

Changes in stockholders’ equity for the six months ended June 30, 2017 consisted of the following:

	(Dollars in thousands)
Balance at January 1, 2017	$	322,087
Net income for the six months ended June 30, 2017	2,352
Cash dividends declared	(5,221		)
Common stock repurchase program	(10,024		)
Amortization of stock based compensation	1,953
Other	363
Balance at June 30, 2017	$	311,510

Cash Dividends Declared

The following table details our cash dividend payments made in 2017. Cash dividends paid as disclosed in the condensed consolidated statements of cash flows for the six months ended June 30, 2017 and 2016 include previously declared cash dividends on shares of vested restricted common stock ("restricted stock") issued to our non-executive directors and dividends related to vested restricted stock units ("RSUs") issued to eligible employees. Cash dividends on RSUs and restricted stock have been accrued and are paid when the applicable vesting conditions are met. Accrued cash dividends on forfeited restricted stock and RSUs are also forfeited.

Declaration Date	Record Date	Payment Date	Per Share Amount		Total Payment(1)
					(Dollars in thousands)
December 20, 2016	January 4, 2017	January 17, 2017	$	0.250	$	5,128
March 1, 2017	March 17, 2017	March 30, 2017	0.125		2,566
April 26, 2017	May 23, 2017	June 23, 2017	0.125		2,545
	Total		$	0.500	$	10,239

(1) The total payment reflects the cash dividends paid in relation to common stock and vested restricted stock.

Share Repurchase Plan

The following table presents information with respect to purchases made by the Company during the six months ended June 30, 2017:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of the Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Publicly Announced Plans or Programs
					(Dollars in thousands)
Beginning Balance					$	10,000
Three Months Ended June 30, 2017	572,550	17.47		572,550	—
Total	572,550	$	17.47	572,550

Basic and Diluted Net Income Per Common Shares

The components of basic and diluted net income per common share were as follows for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(in thousands, except for share and per share amounts)	2017		2016		2017		2016
Numerator:
Net income	$	1,498	$	3,451	$	2,352	$	6,895
Denominator:
Weighted average shares used to compute net income per common share - basic	20,353,801		20,568,058		20,441,781		20,637,070
Weighted average shares used to compute net income per common share - diluted	20,366,102		20,568,058		20,508,473		20,637,070
Basic net income per common share	$	0.07	$	0.17	$	0.12	$	0.33
Diluted net income per common share	$	0.07	$	0.17	$	0.11	$	0.33

Summary of Outstanding RSUs under 2011 LTIP

The following table details activities with respect to RSUs issued and outstanding under the 2017 time based LTIP grant for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	—		$	—
Granted	118,433		20.52
Vested	—		—
Forfeited	(962	)	20.75
Non-vested RSUs at June 30, 2017	117,471		$	20.52	$	1,696	18

The following table details activities with respect to RSUs issued and outstanding under the 2015 LTIP for the six months ended June 30, 2017:

	Shares		Weighted- Average Grant Date Fair Value		Total Unrecognized Compensation Cost (Dollars in thousands)		Weighted-Average Period Over Which Cost is Expected to be Recognized (In months)
Non-vested RSUs at January 1, 2017	451,493		$	17.10
Granted	118,467		20.52
Vested	—		—
Forfeited	(6,265	)	17.52
Non-vested RSUs at June 30, 2017	563,695		$	17.81	$	3,264	18

Activities Under Equity Plan

The following table summarizes the activities under the 2012 Equity Incentive Award Plan ("2012 Equity Plan") from January 1, 2017 through June 30, 2017:

	Activity
Total equity securities available at January 1, 2017	1,246,939
Less: 2015 Performance-Based LTIP RSUs awarded to eligible employees, net of forfeitures	112,202
Less: 2017 Time-Based LTIP RSUs awarded to eligible employees, net of forfeitures	117,471
Less: Restricted stock awarded to non-executive members of the Board of Directors	10,047
Total equity securities available at June 30, 2017	1,007,219

For the three and six months ended June 30, 2017, 8,983 shares of common stock were purchased for a total cost of $0.1 million. No shares were purchased during the corresponding time periods in 2016. The following table summarizes the activities under the ESPP from January 1, 2017 through June 30, 2017:

	Activity
Total ESPP equity securities available at January 1, 2017	246,039
Less: ESPP common stock purchased by eligible employees	8,983
Total ESPP securities available at June 30, 2017	237,056

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Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation Expense

The following table reflects the items for stock based compensation expense on the condensed consolidated statements of income for the periods stated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Dollars in thousands)	2017		2016		2017		2016
2015 LTIP (performance-based)	$	508	$	622	$	998	$	1,153
2017 LTIP (time-based)	371		—		714		—
ESPP	15		—		30		—
Board of Directors restricted stock	104		108		211		215
Total stock based compensation expense	$	998	$	730	$	1,953	$	1,368

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Organization and Significant Accounting Policies (Details)	6 Months Ended
	Jun. 30, 2017 message
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Monthly messages sent through company solutions (over 100 million)	100,000,000

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Consolidated Financial Statement Components - Prepaid Expenses and Other (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid repairs and maintenance	$ 2,312	$ 1,561
Prepaid rent	1,559	208
Prepaid commissions	1,469	594
Prepaid taxes	792	100
Prepaid expenses	1,537	1,921
Total prepaid expenses and other	$ 7,669	$ 4,384

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Consolidated Financial Statement Components - Depreciation, Amortization and Accretion (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,082	$ 2,044	$ 4,158	$ 4,101
Amortization	629	1,035	1,636	2,146
Accretion	140	156	280	311
Total depreciation, amortization and accretion expense	2,851	3,235	6,074	6,558
Leasehold improvements
Property, Plant and Equipment [Line Items]
Depreciation	75	52	125	98
Asset retirement costs
Property, Plant and Equipment [Line Items]
Depreciation	(97)	(69)	(195)	(140)
Paging and computer equipment
Property, Plant and Equipment [Line Items]
Depreciation	2,028	1,992	4,087	3,995
Furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Depreciation	$ 76	$ 69	$ 141	$ 148

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Consolidated Financial Statement Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Accounts receivable allowance	$ 1,100	$ 1,100
Total property and equipment	124,587	123,133
Accumulated depreciation	(110,698)	(110,315)
Total property and equipment, net	13,889	12,818
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	4,051	3,843
Asset retirement costs
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,289	3,263
Asset retirement costs | Minimum
Property, Plant and Equipment [Line Items]
Useful Life	1 year
Asset retirement costs | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Paging and computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 112,800	113,175
Paging and computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Life	1 year
Paging and computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 4,447	$ 2,852
Furniture, fixtures and vehicles | Minimum
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Furniture, fixtures and vehicles | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	5 years

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Consolidated Financial Statement Components - Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Supplemental Balance Sheet Information [Abstract]
Accrued outside services	$ 1,057	$ 975
Accrued accounting and legal	678	467
Accrued network costs	644	773
Deferred rent and other	255	433
Asset retirement obligations	186	85
Total other current liabilities	$ 2,820	$ 2,733

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Consolidated Financial Statement Components - Other Non-current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Supplemental Balance Sheet Information [Abstract]
Asset retirement obligations	$ 7,548	$ 7,472
Deferred rent and other	893	942
Dividends payable	129	507
Total other long-term liabilities	$ 8,570	$ 8,921

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Intangible Assets, Net - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Useful Life (In Years)	10 years

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Intangible Assets, Net - Net Consolidated Balance of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)	10 years
Gross Carrying Amount	$ 25,002
Accumulated Amortization	(15,836)
Total amortizable intangible assets	$ 9,166	$ 10,803
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life (In Years)	10 years
Gross Carrying Amount	$ 25,002
Accumulated Amortization	(15,836)
Total amortizable intangible assets	$ 9,166

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Intangible Assets, Net - Estimated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
For the remaining six months ending December 31, 2017	$ 1,250
2018	2,500
2019	2,500
2020	2,500
2021	416
Total amortizable intangible assets	$ 9,166	$ 10,803

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Asset Retirement Obligations - Changes in Asset Retirement Obligation Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at January 1, 2017			$ 7,557
Accretion	$ 140	$ 156	280	$ 311
Amounts paid			(129)
Asset additions recorded, net			26
Reclassifications			0
Balance at June 30, 2017	7,734		7,734
Short-Term Portion
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at January 1, 2017			85
Accretion			4
Amounts paid			(129)
Asset additions recorded, net			0
Reclassifications			226
Balance at June 30, 2017	186		186
Long-Term Portion
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at January 1, 2017			7,472
Accretion			276
Amounts paid			0
Asset additions recorded, net			26
Reclassifications			(226)
Balance at June 30, 2017	$ 7,548		$ 7,548

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Asset Retirement Obligations - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]
Estimated liability	$ 9,000		$ 9,000
Accretion	$ 140	$ 156	$ 280	$ 311

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Stockholders' Equity - Additional Information (Detail) - USD ($)					2 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 02, 2017	Jan. 28, 2016	Jan. 02, 2015	Dec. 09, 2014	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Jul. 26, 2017	Jul. 24, 2017	Apr. 26, 2017	Jul. 25, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (shares)					75,000,000	75,000,000		75,000,000
Common stock par value (usd per share)					$ 0.0001	$ 0.0001		$ 0.0001
Preferred stock authorized (shares)					25,000,000	25,000,000		25,000,000
Preferred stock par value (usd per share)					$ 0.0001	$ 0.0001		$ 0.0001
Options outstanding (shares)					0	0		0		0
Common stock outstanding (shares)					19,972,094	19,972,094		19,972,094		20,525,614
Preferred stock outstanding (shares)					0	0		0		0
Stock repurchase authority														$ 10,000,000.0
Amount spent to repurchase common stock					$ 10,000,000			$ 10,024,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Less: stock purchased by eligible employees, net of forfeitures (shares)						8,983	0	8,983	0
Proceeds from issuance of common stock						$ 100,000		$ 100,000
Number of shares authorized (shares)										246,039					250,000
Award required holding period								2 years
2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				36 months
Granted (shares)								118,467
2012 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (shares)										1,246,939
2012 Equity Plan | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)								117,471
2017 LTIP (time-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)								118,433
January 2, 2015 | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)			254,777
Granted			$ 4,400,000
January 28, 2016 | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)		227,082
Granted		$ 3,800,000
January 2, 2017 | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	108,428
Granted	$ 2,200,000
January 2, 2017 | 2017 LTIP (time-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	108,394
Granted	$ 2,200,000
Award vesting percentage								33.00%
New Employees or Promoted Employees | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)										7,629
New Employees or Promoted Employees | January 2, 2015 | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)											6,123
New Employees or Promoted Employees | January 2, 2017 | 2015 LTIP (performance-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)								10,039
New Employees or Promoted Employees | January 2, 2017 | 2017 LTIP (time-based) | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)								10,039
Maximum | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period, maximum								6 months
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend rate (usd per share)												$ 0.125
Dividends declared												$ 2,500,000
Subsequent Event | Non-Employee Directors | 2012 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual limit to the value of awards granted													$ 750,000

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Stockholders' Equity - Changes in Stockholders' Equity (Detail) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at January 1, 2017				$ 322,087
Net income for the six months ended June 30, 2017		$ 1,498	$ 3,451	2,352	$ 6,895
Cash dividends declared				(5,221)
Common stock repurchase program	$ (10,000)			(10,024)
Amortization of stock based compensation				1,953
Other				363
Balance at June 30, 2017	$ 311,510	$ 311,510		$ 311,510

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Stockholders' Equity - Cash Dividends Declared to Stockholders (Detail) - Common Stock $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per Share Amount (usd per share) | $ / shares	$ 0.5
Total Payment | $	$ 10,239
Installment One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Declaration Date	Dec. 20, 2016
Record Date	Jan. 04, 2017
Payment Date	Jan. 17, 2017
Per Share Amount (usd per share) | $ / shares	$ 0.25
Total Payment | $	$ 5,128
Installment Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Declaration Date	Mar. 01, 2017
Record Date	Mar. 17, 2017
Payment Date	Mar. 30, 2017
Per Share Amount (usd per share) | $ / shares	$ 0.125
Total Payment | $	$ 2,566
Installment Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Declaration Date	Apr. 26, 2017
Record Date	May 23, 2017
Payment Date	Jun. 23, 2017
Per Share Amount (usd per share) | $ / shares	$ 0.125
Total Payment | $	$ 2,545

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Stockholders' Equity - Treasury Stock (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Apr. 26, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Stock repurchase authority		$ 10,000,000.0
Total Number of Shares Purchased
Total number of shares purchased (shares)
Shares purchased during period (shares)	572,550
Total number of shares purchased (shares)	572,550
Average price paid per share, beginning balance (usd per share)
Average price paid per share (usd per share)	17.47
Average price paid per share, ending balance (usd per share)	$ 17.47
Approximate dollar value of shares that may yet be purchased under the publicly announced plans or programs			$ 10,000,000
Common Stock Repurchase Program
Total Number of Shares Purchased
Total number of shares purchased (shares)
Shares purchased during period (shares)	572,550
Total number of shares purchased (shares)	572,550

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Stockholders' Equity - Basic and Diluted Net Income Per Common Shares (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income	$ 1,498	$ 3,451	$ 2,352	$ 6,895
Denominator:
Weighted average shares used to compute net income per common share - basic (shares)	20,353,801	20,568,058	20,441,781	20,637,070
Weighted average shares used to compute net income per common share - diluted (shares)	20,366,102	20,568,058	20,508,473	20,637,070
Basic net income per common share (usd per share)	$ 0.07	$ 0.17	$ 0.12	$ 0.33
Diluted net income per common share (usd per share)	$ 0.07	$ 0.17	$ 0.11	$ 0.33

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Stockholders' Equity - Activities Under Equity Plan (Detail) - shares	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jul. 25, 2016
2012 Equity Plan
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Total equity securities available at January 1, 2017 (shares)		1,246,939
Total equity securities available at March 31, 2017 (shares)	1,007,219
ESPP
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Total equity securities available at January 1, 2017 (shares)		246,039	250,000
Total equity securities available at March 31, 2017 (shares)	237,056
Restricted Stock Units | 2012 Equity Plan
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Less: Restricted stock awarded to non-executive members of the Board of Directors (shares)	117,471
Eligible Employees | Restricted Stock Units | 2012 Equity Plan
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Less: Restricted stock awarded to non-executive members of the Board of Directors (shares)	112,202
Board Of Directors | Restricted Stock | 2012 Equity Plan
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Less: Restricted stock awarded to non-executive members of the Board of Directors (shares)	10,047

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Stockholders' Equity - Summary of Outstanding RSUs (Detail) - Restricted Stock Units $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares
2015 LTIP (performance-based)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning Balance (shares) | shares	451,493
Granted (shares) | shares	118,467
Vested (shares) | shares	0
Forfeited (shares) | shares	(6,265)
Ending Balance (shares) | shares	563,695
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	$ 17.10
Granted, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	20.52
Vested, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	0.00
Forfeited, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	17.52
Ending Balance, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	$ 17.81
Total Unrecognized Compensation Cost (net of estimated forfeitures) | $	$ 3,264
Weighted-Average Period Over Which Cost is Expected to be Recognized	18 months
2017 LTIP (time-based)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning Balance (shares) | shares	0
Granted (shares) | shares	118,433
Vested (shares) | shares	0
Forfeited (shares) | shares	(962)
Ending Balance (shares) | shares	117,471
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning Balance, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	$ 0.00
Granted, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	20.52
Vested, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	0.00
Forfeited, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	20.75
Ending Balance, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	$ 20.52
Total Unrecognized Compensation Cost (net of estimated forfeitures) | $	$ 1,696
Weighted-Average Period Over Which Cost is Expected to be Recognized	18 months

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Income Taxes - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Deferred income tax assets	$ 72,018,000	$ 73,068,000
Valuation allowance	$ 0	0
Percentage of probability of deferred income tax realized in future	50.00%
Valuation allowance, methodologies and assumptions	"more likely than not" (greater than a 50% probability)
Federal income tax at statutory rate	35.00%
Approximate Federal net operating losses (NOLs) available to offset future taxable income		$ 126,000,000

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Stock Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Share based Compensation Allocation of Recognized Period Cost [Line Items]
Total stock based compensation expense	$ 998	$ 730	$ 1,953	$ 1,368
Expected vesting percent					50.00%
2015 LTIP (performance-based)
Share based Compensation Allocation of Recognized Period Cost [Line Items]
Total stock based compensation expense	508	622	998	1,153
2017 LTIP (time-based)
Share based Compensation Allocation of Recognized Period Cost [Line Items]
Total stock based compensation expense	371	0	714	0
ESPP
Share based Compensation Allocation of Recognized Period Cost [Line Items]
Total stock based compensation expense	15	0	30	0
Board Of Directors | Board of Directors restricted stock | Restricted Stock
Share based Compensation Allocation of Recognized Period Cost [Line Items]
Total stock based compensation expense	$ 104	$ 108	$ 211	$ 215

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Related Parties - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Director
Related Party Transaction [Line Items]
Site rent expense	$ 1.0	$ 1.0	$ 2.0	$ 2.0