Spok (SPOK) 10-Q 27 Jul 23 2023 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2023	Jul. 21, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-32358
Entity Registrant Name	SPOK HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	16-1694797
Entity Address, Address Line One	5911 Kingstowne Village Pkwy, 6th Floor
Entity Address, City or Town	Alexandria,
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22315
City Area Code	800
Local Phone Number	611-8488
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	SPOK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		19,967,895
Entity Central Index Key	0001289945
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 30,866	$ 35,754
Accounts receivable, net	25,467	26,861
Prepaid expenses	7,371	6,849
Other current assets	841	587
Total current assets	64,545	70,051
Non-current assets:
Property and equipment, net	7,869	8,223
Operating lease right-of-use assets	12,713	13,876
Goodwill	99,175	99,175
Deferred income tax assets, net	48,992	52,398
Other non-current assets	630	754
Total non-current assets	169,379	174,426
Total assets	233,924	244,477
Current liabilities:
Accounts payable	6,768	5,880
Accrued compensation and benefits	8,528	11,628
Deferred revenue	23,984	27,255
Operating lease liabilities	4,693	5,096
Other current liabilities	5,352	4,573
Total current liabilities	49,325	54,432
Non-current liabilities:
Asset retirement obligations	7,455	7,237
Operating lease liabilities	9,520	10,604
Other non-current liabilities	1,013	1,107
Total non-current liabilities	17,988	18,948
Total liabilities	67,313	73,380
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	100,612	99,908
Accumulated other comprehensive loss	(1,862)	(1,909)
Retained earnings	67,859	73,096
Total stockholders’ equity	166,611	171,097
Total liabilities and stockholders' equity	$ 233,924	$ 244,477

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Total revenue	$ 36,463	$ 33,710	$ 69,643	$ 67,535
Cost of revenue (exclusive of items shown separately below)	6,727	6,980	13,263	14,784
Research and development	2,853	2,624	5,346	9,121
Technology operations	6,452	6,880	13,039	13,893
Selling and marketing	4,354	3,874	8,255	9,189
General and administrative	8,489	9,619	16,189	20,054
Depreciation and accretion	1,265	871	2,501	1,805
Severance and restructuring	108	450	118	4,945
Total operating expenses	30,248	31,298	58,711	73,791
Operating income (loss)	6,215	2,412	10,932	(6,256)
Interest income	354	170	626	237
Other (expense) income	(138)	25	(85)	12
Income (loss) before income taxes	6,431	2,607	11,473	(6,007)
(Provision for) benefit from income taxes	(1,698)	(683)	(3,623)	717
Net income (loss)	$ 4,733	$ 1,924	$ 7,850	$ (5,290)
Basic net income (loss) per common share (in usd per share)	$ 0.24	$ 0.10	$ 0.39	$ (0.27)
Diluted net income (loss) per common share (in usd per share)	$ 0.23	$ 0.10	$ 0.39	$ (0.27)
Basic weighted average common shares outstanding (in shares)	19,957,786	19,693,659	19,927,782	19,645,680
Diluted weighted average common shares outstanding (in shares)	20,255,248	19,807,430	20,266,914	19,645,680
Cash dividends declared per common share (in usd per share)	$ 0.3125	$ 0.3125	$ 0.6250	$ 0.6250
Wireless revenue
Total revenue	$ 18,877	$ 18,700	$ 37,905	$ 37,547
Software revenue
Total revenue	$ 17,586	$ 15,010	$ 31,738	$ 29,988

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,733	$ 1,924	$ 7,850	$ (5,290)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	35	(229)	47	(204)
Other comprehensive income (loss)	35	(229)	47	(204)
Comprehensive income (loss)	$ 4,768	$ 1,695	$ 7,897	$ (5,494)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital & Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2021		19,481,429
Beginning balance at Dec. 31, 2021	$ 172,710	$ 2	$ 95,703	$ 77,005
Net income (loss)	(7,214)			(7,214)
Issuance of common stock for vested restricted stock units under the equity plans (in shares)		346,604
Purchase of common stock for tax withholding and other (in shares)		(134,354)
Purchase of common stock for tax withholding and other	(1,209)		(1,209)
Amortization of stock-based compensation	1,115		1,115
Cash dividends declared	(6,513)			(6,513)
Cumulative translation adjustment	25		25
Ending balance (in shares) at Mar. 31, 2022		19,693,679
Ending balance at Mar. 31, 2022	158,914	$ 2	95,634	63,278
Beginning balance (in shares) at Dec. 31, 2021		19,481,429
Beginning balance at Dec. 31, 2021	172,710	$ 2	95,703	77,005
Net income (loss)	(5,290)
Cumulative translation adjustment	(204)
Ending balance (in shares) at Jun. 30, 2022		19,693,657
Ending balance at Jun. 30, 2022	155,213	$ 2	96,366	58,845
Beginning balance (in shares) at Mar. 31, 2022		19,693,679
Beginning balance at Mar. 31, 2022	158,914	$ 2	95,634	63,278
Net income (loss)	1,924			1,924
Purchase of common stock for tax withholding and other (in shares)		(22)
Purchase of common stock for tax withholding and other	0		0
Amortization of stock-based compensation	961		961
Cash dividends declared	(6,357)			(6,357)
Cumulative translation adjustment	(229)		(229)
Ending balance (in shares) at Jun. 30, 2022		19,693,657
Ending balance at Jun. 30, 2022	155,213	$ 2	96,366	58,845
Beginning balance (in shares) at Dec. 31, 2022		19,703,800
Beginning balance at Dec. 31, 2022	171,097	$ 2	97,999	73,096
Net income (loss)	3,117			3,117
Issuance of common stock for vested restricted stock units under the equity plans (in shares)		382,568
Purchase of common stock for tax withholding and other (in shares)		(144,516)
Purchase of common stock for tax withholding and other	(1,245)		(1,245)
Amortization of stock-based compensation	936		936
Cash dividends declared	(6,549)			(6,549)
Cumulative translation adjustment	12		12
Ending balance (in shares) at Mar. 31, 2023		19,941,852
Ending balance at Mar. 31, 2023	167,368	$ 2	97,702	69,664
Beginning balance (in shares) at Dec. 31, 2022		19,703,800
Beginning balance at Dec. 31, 2022	171,097	$ 2	97,999	73,096
Net income (loss)	7,850
Cumulative translation adjustment	47
Ending balance (in shares) at Jun. 30, 2023		19,962,062
Ending balance at Jun. 30, 2023	166,611	$ 2	98,750	67,859
Beginning balance (in shares) at Mar. 31, 2023		19,941,852
Beginning balance at Mar. 31, 2023	167,368	$ 2	97,702	69,664
Net income (loss)	4,733			4,733
Amortization of stock-based compensation	923		923
Cash dividends declared	(6,538)			(6,538)
Issuance of restricted stock under the 2020 Equity Plan and other (in shares)		20,210
Issuance of restricted stock under the 2020 Equity Plan and other	90		90	0
Cumulative translation adjustment	35		35
Ending balance (in shares) at Jun. 30, 2023		19,962,062
Ending balance at Jun. 30, 2023	$ 166,611	$ 2	$ 98,750	$ 67,859

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities:
Net income (loss)	$ 7,850	$ (5,290)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and accretion	2,501	1,805
Deferred income tax expense (benefit)	3,602	(495)
Stock-based compensation	1,859	2,076
Provisions for credit losses, service credits and other	222	861
Changes in assets and liabilities:
Accounts receivable	1,168	(576)
Prepaid expenses and other assets	(653)	(416)
Net operating lease liabilities	(324)	(109)
Accounts payable, accrued liabilities and other	(1,745)	(3,582)
Deferred revenue	(3,282)	(169)
Net cash provided by (used in) operating activities	11,198	(5,895)
Investing activities:
Purchases of property and equipment	(1,815)	(1,192)
Purchase of short-term investments	0	(14,967)
Maturity of short-term investments	0	15,000
Net cash used in investing activities	(1,815)	(1,159)
Financing activities:
Cash distributions to stockholders	(13,163)	(12,679)
Proceeds from issuance of common stock under the Employee Stock Purchase Plan	90	0
Purchase of common stock for tax withholding on vested equity awards	(1,245)	(1,209)
Net cash used in financing activities	(14,318)	(13,888)
Effect of exchange rate on cash and cash equivalents	47	(204)
Net decrease in cash and cash equivalents	(4,888)	(21,146)
Cash and cash equivalents, beginning of period	35,754	44,583
Cash and cash equivalents, end of period	30,866	23,437
Supplemental disclosure:
Income taxes paid	$ 253	$ 185

Organization and Significant Ac

Organization and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Organization and Significant Accounting Policies	ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Spok Holdings, Inc. (NASDAQ: SPOK) ("Spok," "we," "our" or the "Company"), through its wholly owned subsidiary Spok, Inc., is proud to be the global leader in healthcare communications. We deliver clinical information to care teams when and where it matters most to improve patient outcomes. Top hospitals rely on Spok products and services to enhance workflows for clinicians, support administrative compliance, and provide a better experience for patients. We offer a focused suite of unified clinical communication and collaboration solutions that include call center applications, 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 greetings, 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 clinical 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. 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 the presentation of the results of all interim periods reported herein and all such adjustments are of a normal, recurring nature, with the exception of the revision to deferred revenue as discussed in more detail below. Amounts shown in the Condensed Consolidated Statements of Operations within the operating expense categories of cost of revenue; research and development; technology operations; selling and marketing; and general and administrative are recorded exclusive of depreciation, amortization and accretion. These items are shown separately to the extent that they are considered material for the periods presented. The financial information included herein, other than the Condensed Consolidated Balance Sheet as of December 31, 2022, is unaudited. The Condensed Consolidated Balance Sheet as of December 31, 2022, 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, 2022. 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, 2022 (the “2022 Annual Report”). The Condensed Consolidated Statements of Operations for the interim periods presented are not necessarily indicative of the results that may be expected for a full year. Revision of Previously Issued Financial Statements In connection with the preparation of its financial statements for the quarter ended June 30, 2023, the Company identified certain adjustments to correct an immaterial error related to the understatement of deferred revenue of approximately $1.0 million. These adjustments corrected an overstatement of our software revenue in 2018 stemming from non-recurring activity associated with the implementation of a new financial system in 2017. Based on our quantitative and qualitative analysis, we concluded that the adjustments were not material to any prior annual or interim periods. As such, we have revised the Consolidated Balance Sheets for the year ended December 31, 2022, relevant footnotes, and other financial information as applicable, included herein to reflect the reduction in opening retained earnings and a corresponding increase to deferred revenue. 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 ongoing basis, we evaluate estimates and assumptions, including, but not limited to, those related to the impairment of long-lived assets, goodwill, accounts receivable allowances, revenue recognition, determining the standalone selling price of performance obligations, variable consideration, depreciation expense, 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.

Risks and Other Important Facto

Risks and Other Important Factors	6 Months Ended
	Jun. 30, 2023
Risks and Uncertainties [Abstract]
Risks and Other Important Factors	RISKS AND OTHER IMPORTANT FACTORSSee “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 2022 Annual Report, which describe key risks associated with our operations and industry.

Recent Accounting Standards

Recent Accounting Standards	6 Months Ended
	Jun. 30, 2023
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Standards	RECENT ACCOUNTING STANDARDS The Company considers the applicability and impact of all Accounting Standards Updates ("ASUs") issued by the Financial Accounting Standards Board ("FASB"). The Company has determined that all recent ASUs issued by the FASB are either not applicable or are not expected to have a material impact on the Company's Condensed Consolidated Financial Statements.

Significant Accounting Policies

Significant Accounting Policies Update	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Significant Accounting Policies Update	SIGNIFICANT ACCOUNTING POLICIES UPDATE Our significant accounting policies are detailed in Note 1, “Organization and Significant Accounting Policies” of the 2022 Annual Report.

Restructuring

Restructuring	6 Months Ended
	Jun. 30, 2023
Restructuring and Related Activities [Abstract]
Restructuring	RESTRUCTURING In February 2022, the Company announced a new strategic business plan that included a restructuring of its business to discontinue Spok Go, eliminate all associated costs and optimize the Company’s existing structure to drive continued cost improvement. As part of the restructuring program, the Company eliminated 176 positions, primarily in research and development, and also in professional services, selling and marketing, and back-office support functions. For the three and six months ended June 30, 2022, the Company incurred total severance and restructuring costs of $0.5 million and $4.9 million respectively, related to the restructuring program, which are included within the Condensed Consolidated Statement of Operations. These costs are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2022 2022 Severance and personnel related costs $ 349 $ 4,346 Contractual terminations 101 $ 599 Total severance and restructuring costs $ 450 $ 4,945 A summary of activity for the six months ended June 30, 2023 and 2022, for restructuring-related liabilities associated with the strategic business plan, which is included within accrued compensation and benefits and other current liabilities within the Condensed Consolidated Balance Sheet, is as follows: (Dollars in thousands) Balance at December 31, 2021 $ — Restructuring and other charges 4,495 Payments (34) Non-cash adjustment (124) Balance at March 31, 2022 $ 4,337 Restructuring and other charges 525 Payments (2,302) Non-cash adjustment (188) Balance at June 30, 2022 $ 2,372

Revenue, Deferred Revenue And P

Revenue, Deferred Revenue And Prepaid Commissions	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue, Deferred Revenue and Prepaid Commissions	REVENUE, DEFERRED REVENUE AND PREPAID COMMISSIONS Wireless Revenue Wireless revenue consists of two primary components: paging revenue and product and other revenue. 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. 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. (See Item 1. “Business,” in the 2022 Annual Report for more details.) Software Revenue Software revenue consists of two primary components: operations revenue and maintenance revenue. Operations revenue consists primarily of license revenues for our healthcare communications solutions, revenue from the sale of equipment that facilitates the use of our software solutions, and professional services revenue related to the implementation of our solutions. Maintenance revenue is for ongoing support of our software solutions or related equipment and access to when-and-if available software updates. Maintenance is generally purchased and renewed on an annual basis. Revenue Recognition Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. Our software licenses and hardware are generally recognized at a point in time when we have transferred control to the customer. For software licenses, revenue is not recognized until the related license(s) has been made available to the customer and the customer can begin to benefit from its right to use the license(s). Our software licenses represent a right to use Spok’s intellectual property ("IP") as it exists at a point in time at which the license is granted. Many of our software licenses have significant standalone functionality due to their ability to process a transaction or perform a function or task, and we do not need to maintain those products, once provided to the customer, for value to exist. While the functionality of the IP that we license may substantively change during the license period, customers are not contractually or practically required to update their license as a result of those changes. Our wireless, professional services, and maintenance are generally recognized over time due to a customer's simultaneous receipt and consumption of the benefit as we perform the work. As we transfer control over time, we recognize revenue based on the extent of progress towards completion of the performance obligation. The selection of the method to measure progress towards completion requires significant judgment and is based on the nature of the products or services to be provided. Generally, we use the time-elapsed measure of progress for performance obligations that include wireless or maintenance services. We believe this method best depicts the simultaneous transfer and consumption of the benefit based on our performance as these services are generally considered standby services. For professional services, we leverage an input methodology based on the number of hours worked on a project versus the total expected hours necessary to complete the project. Revenues are recognized proportionally as hours are incurred. The following table presents our revenues disaggregated by revenue type: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Revenue: Paging revenue $ 18,271 $ 18,141 $ 36,796 $ 36,454 Product and other revenue 606 559 1,109 1,093 Wireless revenue $ 18,877 $ 18,700 $ 37,905 $ 37,547 License $ 3,692 $ 1,962 $ 5,310 $ 3,786 Professional services 3,837 3,331 7,076 6,667 Hardware 933 507 1,289 1,096 Operations revenue 8,462 5,800 13,675 11,549 Maintenance 9,124 9,210 18,063 18,439 Software revenue $ 17,586 $ 15,010 $ 31,738 $ 29,988 Total revenue $ 36,463 $ 33,710 $ 69,643 $ 67,535 The U.S. was the only country that accounted for more than 10% of the Company’s total revenue for the three and six months ended June 30, 2023, and 2022. Revenue generated in the U.S. and internationally 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) 2023 2022 2023 2022 United States $ 35,649 $ 32,553 $ 67,860 $ 65,325 International 814 1,157 1,783 2,210 Total revenue $ 36,463 $ 33,710 $ 69,643 $ 67,535 Deferred Revenues Our deferred revenues represent payments made by, or due from, customers in advance of our performance. Changes in the balance of total deferred revenue during the six months ended June 30, 2023, are as follows: (Dollars in thousands) December 31, 2022 Additions Revenue Recognized June 30, 2023 Deferred Revenue $ 27,505 $ 27,624 $ (30,906) $ 24,223 During the six months ended June 30, 2023, the Company recognized $18.1 million related to amounts deferred as of December 31, 2022. Prepaid Commissions Our prepaid commissions represent payments made to employees in advance of our performance on the related underlying contracts. These costs have been incurred directly in relation to obtaining a contract. As such, these costs are amortized over the estimated period of benefit. Changes in the balance of total prepaid commissions during the six months ended June 30, 2023 are as follows: (Dollars in thousands) December 31, 2022 Additions Commissions Recognized June 30, 2023 Prepaid Commissions $ 1,745 $ 2,271 $ (2,295) $ 1,721 Prepaid commissions are included within prepaid expenses in the Condensed Consolidated Balance Sheets and commissions expense is included within selling and marketing in the Condensed Consolidated Statements of Operations. Remaining Performance Obligations The balance of remaining performance obligations at June 30, 2023, was $57.0 million. We expect to recognize approximately $40.9 million of our remaining performance obligations over the next 12 months, with the remaining balance recognized thereafter.

Leases

Leases	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Leases	LEASES We have operating lease arrangements for corporate offices, cellular towers, storage units and small building space. The building space is used to house infrastructure, such as transmitters, antennae and other various equipment for the Company’s wireless paging services. For leases with a term of 12 months or less, renewal terms are generally of an evergreen nature (either month-to-month or year-to-year). For leases with a term greater than 12 months, renewal terms are generally explicit and provide for one to five optional renewals consistent with the initial term. Many of our leases, with the exception of those for our corporate offices, include options to terminate the lease within one year. Variable lease payments, residual value guarantees or purchase options are not generally present in these leases. In May 2022, we extended 23 site leases on a Master License Agreement which included a term of 10 years with an option to terminate within 45 days of notification of termination. At that time, we recorded a $2.9 million right-of-use asset and a corresponding operating lease liability for these leases. In December 2022, we modified an office lease to reduce the leased space and optimize costs, which resulted in a reduction of $1.8 million in right-of-use assets and corresponding operating lease liabilities. Lease costs are included in technology operations and general and administrative expenses in the Condensed Consolidated Statements of Operations. The following table presents lease costs disaggregated by type: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Operating lease cost $ 1,171 $ 1,379 $ 2,351 $ 2,861 Short-term lease cost 2,262 2,448 4,539 5,081 Total lease cost $ 3,433 $ 3,827 $ 6,890 $ 7,942 The following table presents supplemental cash flow information: For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities - operating leases $ 2,661 $ 2,945 The following table presents the weighted average remaining lease term and discount rate: June 30, (Dollars in thousands) 2023 2022 Weighted average remaining lease term - operating leases (in years) 4.70 4.80 Weighted average discount rate - operating leases 4.86% 4.37% Maturities of lease liabilities as of June 30, 2023, were as follows: For the Year Ended December 31, (Dollars in thousands) 2023 (remaining six months) $ 2,473 2024 4,151 2025 3,158 2026 2,420 2027 1,206 Thereafter 2,505 Total future lease payments 15,913 Imputed interest (1,700) Total $ 14,213

Consolidated Financial Statemen

Consolidated Financial Statement Components	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated Financial Statement Components	CONSOLIDATED FINANCIAL STATEMENT COMPONENTS Depreciation and Accretion Depreciation 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) 2023 2022 2023 2022 Depreciation Leasehold improvements $ 14 $ 16 $ 27 $ 35 Asset retirement costs 64 (175) 130 (350) Paging and computer equipment 967 800 1,905 1,650 Furniture, fixtures and vehicles 56 60 111 130 Total depreciation 1,101 701 2,173 1,465 Accretion 164 170 328 340 Total depreciation and accretion expense $ 1,265 $ 871 $ 2,501 $ 1,805 Accounts Receivable, Net Accounts receivable was recorded net of an allowance of $1.6 million at June 30, 2023, and $1.8 million at December 31, 2022. Accounts receivable, net includes $9.1 million and $5.9 million of unbilled receivables at June 30, 2023, and December 31, 2022, respectively. Unbilled receivables are defined as the Company's right to consideration in exchange for goods or services that we have transferred to the customer but have not yet billed for, generally as a result of contractual billing terms. Property and Equipment, Net Property and equipment, net consisted of the following as of the dates stated: (Dollars in thousands) Useful Life June 30, 2023 December 31, 2022 Leasehold improvements shorter of useful life or lease term $ 2,553 $ 2,497 Asset retirement costs 1-5 3,848 3,848 Paging and computer equipment 1-5 87,432 88,427 Furniture, fixtures and vehicles 3-5 3,174 3,289 Total property and equipment 97,007 98,061 Accumulated depreciation (89,138) (89,838) Total property and equipment, net $ 7,869 $ 8,223

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GOODWILLDuring the three months ended June 30, 2023, we performed a qualitative assessment of goodwill and determined that a triggering event had not occurred. While an impairment assessment is performed annually in the fourth quarter, the Company monitors its business environment for potential triggering events on a quarterly basis. There is potential for further impairment charges being recognized in future periods based on these ongoing assessments.

Asset Retirement Obligations

Asset Retirement Obligations	6 Months Ended
	Jun. 30, 2023
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 Long-Term Total Balance at December 31, 2022 $ 243 $ 7,237 $ 7,480 Accretion (2) 330 328 Amounts paid (132) — (132) Reclassifications 112 (112) — Balance at June 30, 2023 $ 221 $ 7,455 $ 7,676 The short-term portion of the balance above is included within other current liabilities in the Condensed Consolidated Balance Sheets at June 30, 2023, and December 31, 2022. 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 $9.1 million. The total estimated liability is based on the transmitter locations remaining after we have consolidated the number of networks we operate and assuming the underlying leases continue to be renewed to that future date. Accretion expense related solely to asset retirement obligations and was recorded based on the interest method.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2023
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, 2023, and December 31, 2022, we had no stock options outstanding. At June 30, 2023, and December 31, 2022, there were 19,962,062 and 19,703,800 shares of common stock outstanding, respectively, and no shares of preferred stock outstanding. Dividends Cash distributions to stockholders, as disclosed in the Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2023, and 2022, 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. The following table details our cash dividends declared and paid in 2023 through the date hereof: (Dollars in thousands) Declaration Date Record Date Payment Date Per Share Amount Total Declared (1) February 22, 2023 March 16, 2023 March 30, 2023 $ 0.3125 $ 6,549 May 3, 2023 May 25, 2023 June 23, 2023 0.3125 6,538 Total $ 0.6250 $ 13,087 (1) The total declared reflects the cash dividends declared in relation to common stock, deferred stock units ("DSUs") and unvested RSUs. On July 26, 2023, our Board of Directors declared a regular quarterly cash dividend of $0.3125 per share of common stock with a record date of August 17, 2023, and a payment date of September 8, 2023. Cash dividends related to common stock of approximately $6.2 million will be paid from available cash on hand. Common Stock Repurchase Program On February 16, 2022, our Board of Directors authorized a share repurchase program for up to $10 million of the Company’s common stock. Under the repurchase program, repurchases can be made from time to time using a variety of methods, which may include open market purchases, privately negotiated transactions or otherwise, all in accordance with the rules of the SEC and other applicable legal requirements. The specific timing, price and size of purchases will depend on prevailing stock prices, general economic and market conditions, legal requirements and other considerations. The repurchase program does not obligate the Company to acquire any particular amount of common stock, and the repurchase program may be suspended or discontinued at any time at the Company’s discretion. For the six months ended June 30, 2023, we did not repurchase any common stock. Net Income (Loss) per Common Share Basic net income (loss) per common share is computed on the basis of the weighted average common shares outstanding. Diluted net income (loss) 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 components of basic and diluted net income (loss) 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) 2023 2022 2023 2022 Numerator: Net income (loss) $ 4,733 $ 1,924 $ 7,850 $ (5,290) Denominator: Basic weighted average common shares outstanding 19,957,786 19,693,659 19,927,782 19,645,680 Diluted weighted average common shares outstanding 20,255,248 19,807,430 20,266,914 19,645,680 Basic net income (loss) per common share $ 0.24 $ 0.10 $ 0.39 $ (0.27) Diluted net income (loss) per common share $ 0.23 $ 0.10 $ 0.39 $ (0.27) For the three and six months ended June 30, 2023, and 2022 the following securities were excluded from the calculation of diluted shares outstanding as the effect would have been anti-dilutive: For the Three Months Ended June 30, For the Six Months Ended June 30, 2023 2022 2023 2022 Restricted stock units — — — 277,381 Stock-Based Compensation Plans On April 29, 2020, our Board of Directors adopted the Spok Holdings, Inc. 2020 Equity Incentive Award Plan (the “2020 Equity Plan”) that our stockholders subsequently approved on July 28, 2020. At July 28, 2020, a total of 1,699,950 shares of common stock had been reserved for issuance under the Equity Plans, On July 25, 2023, our Board of Directors and our stockholders approved an amendment and restatement of 2020 Equity Plan to increase the number of shares available for issuance by 1,000,000 shares. At July 25, 2023, a total of 1,268,444 shares of common stock had been reserved for issuance under the equity plans. Awards under the 2020 Equity Plan may be in the form of stock options, restricted common stock, RSUs, performance awards, dividend equivalents, stock payment awards, deferred stock, DSUs, stock appreciation rights or other stock or cash-based awards. Restricted stock awards generally vest one year from the date of grant. Related dividends accumulate during the vesting period and are paid at the time of vesting. Contingent RSUs generally vest over a three-year performance period upon successful completion of the performance objectives. Non-contingent RSUs generally vest in thirds, annually, over a three-year period. Dividend equivalent rights generally accompany each RSU award and those rights accumulate and vest along with the underlying RSU. Dividend equivalent rights generally accompany each DSU award and are paid to participants in cash on the Company's applicable dividend payment date whether the DSU is vested or unvested. The dividend equivalent right associated with a DSU continues until delivery of the underlying shares of common stock is made. Payment of the underlying shares of common stock occurs at the earliest of a participant's separation from service, disability, death, or a change in control. The following table summarizes the activities under the Equity Plans from January 1, 2023, through June 30, 2023: Activity Total equity securities available at January 1, 2023 683,052 RSU, DSU, and restricted stock awarded to eligible employees, net of forfeitures (408,775) Total equity securities available at June 30, 2023 274,277 The following table details activities with respect to outstanding RSUs, DSUs, and restricted stock under the Equity Plans for the six months ended June 30, 2023: Shares Weighted Unvested at January 1, 2023 1,015,749 $ 10.25 Granted 452,978 8.30 Vested (373,103) 11.21 Forfeited (44,203) 10.91 Unvested at June 30, 2023 1,051,421 $ 9.04 Of the 1,051,421 unvested RSUs, DSUs and restricted stock outstanding at June 30, 2023, 540,058 RSUs include contingent performance requirements for vesting purposes. At June 30, 2023, there was $4.4 million of unrecognized net compensation cost related to RSUs and restricted stock, which is expected to be recognized over a weighted average period of 1.8 years. Employee Stock Purchase Plan In 2016, our Board of Directors adopted the Spok Holdings, Inc. Employee Stock Purchase Plan (the "ESPP") that our stockholders subsequently approved on July 25, 2016. A total of 250,000 shares of common stock were reserved for issuance under this plan. The ESPP allows employees to purchase shares of common stock at a discounted rate, subject to plan limitations. 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 during 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. The Company uses the Black-Scholes model to calculate the fair value of the common stock to be purchased during each offering period on the offer date. The Black-Scholes model requires the use of estimates for the expected term, the expected volatility of the underlying common stock over the expected term, the risk-free interest rate and the expected dividend payment. For the six months ended June 30, 2023, 12,558 shares of the Company's stock were purchased, as compared to no share purchases during the same period in 2022. The following table summarizes the activities under the ESPP from January 1, 2023, through June 30, 2023: Activity Total ESPP equity securities available at January 1, 2023 133,184 ESPP common stock purchased by eligible employees (12,558) Total ESPP securities available at June 30, 2023 120,626 Amounts withheld from participants will be classified as accrued compensation and benefits in the Condensed Consolidated Balance Sheets until funds are used to purchase shares. This liability amount is immaterial to the Condensed Consolidated Financial Statements. Stock-Based Compensation Expense We record all stock-based compensation, which consist of RSUs, DSUs, restricted stock, equity in lieu of salary, 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 as incurred. The following table reflects the items for stock-based compensation expense in the Condensed Consolidated Statements of Operations for the periods stated: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Performance-based RSUs $ 373 $ 383 $ 754 $ 843 Time-based RSUs, DSUs and restricted stock 535 578 1,077 1,233 ESPP 15 — 28 — Total stock-based compensation $ 923 $ 961 $ 1,859 $ 2,076

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2023
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. Our quarterly tax provision and our quarterly estimate of our annual effective tax rate are subject to significant variation due to several factors, including variability in accurately predicting our pre-tax and taxable income and loss and the mix of jurisdictions to which they relate, changes in how we do business, changes in our stock price, foreign currency gains (losses), tax law developments (including changes in statutes, regulations, case law, and administrative practices), and relative changes of expenses or losses for which tax benefits are not recognized. Additionally, our effective tax rate can be more or less volatile based on the amount of pre-tax income or loss. For example, the impact of discrete items and non-deductible expenses on our effective tax rate is greater when our pre-tax income is lower. For 2023, the anticipated effective income tax rate is expected to continue to differ from the federal statutory rate of 21%, primarily due to the effect of state income taxes, permanent differences between book and taxable income, and certain discrete items. We had total net deferred income tax assets ("DTAs") of $49.0 million and $52.4 million as of June 30, 2023, and December 31, 2022, respectively. We had a valuation allowance of $2.3 million as of June 30, 2023, and December 31, 2022. We assess the recoverability of our deferred income tax assets, which represent the tax benefits of future tax deductions, based on available positive and negative evidence and by considering the adequacy of future taxable income from all sources, including prudent and feasible tax planning strategies. This assessment is required to determine whether, based on all available evidence, it is "more likely than not" (meaning a probability of greater than 50%) that all or some portion of the deferred income tax assets will be realized in future periods. 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.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIESThere have been no material changes during the six months ended June 30, 2023, to the commitments and contingencies previously reported in the 2022 Annual Report.

Related Parties

Related Parties	6 Months Ended
	Jun. 30, 2023
Related Party Transactions [Abstract]
Related Parties	RELATED PARTIESA member of our Board of Directors, who was appointed at the beginning of 2020, serves as EVP and Chief Information Officer for an entity that is also a customer of the Company. For both the three months ended June 30, 2023 and 2022, we recognized revenues of $0.1 million and $0.2 million, respectively, related to contracts from the entity at which the individual is employed. For the six months ended June 30, 2023

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net income (loss)	$ 4,733	$ 3,117	$ 1,924	$ (7,214)	$ 7,850	$ (5,290)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Organization and Significant _2

Organization and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2023
Accounting Policies [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 the presentation of the results of all interim periods reported herein and all such adjustments are of a normal, recurring nature, with the exception of the revision to deferred revenue as discussed in more detail below. Amounts shown in the Condensed Consolidated Statements of Operations within the operating expense categories of cost of revenue; research and development; technology operations; selling and marketing; and general and administrative are recorded exclusive of depreciation, amortization and accretion. These items are shown separately to the extent that they are considered material for the periods presented. The financial information included herein, other than the Condensed Consolidated Balance Sheet as of December 31, 2022, is unaudited. The Condensed Consolidated Balance Sheet as of December 31, 2022, 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, 2022. 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, 2022 (the “2022 Annual Report”). The Condensed Consolidated Statements of Operations 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 ongoing basis, we evaluate estimates and assumptions, including, but not limited to, those related to the impairment of long-lived assets, goodwill, accounts receivable allowances, revenue recognition, determining the standalone selling price of performance obligations, variable consideration, depreciation expense, 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.
Recent Accounting Standards	RECENT ACCOUNTING STANDARDS The Company considers the applicability and impact of all Accounting Standards Updates ("ASUs") issued by the Financial Accounting Standards Board ("FASB"). The Company has determined that all recent ASUs issued by the FASB are either not applicable or are not expected to have a material impact on the Company's Condensed Consolidated Financial Statements.

Restructuring (Tables)

Restructuring (Tables)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs		These costs are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2022 2022 Severance and personnel related costs $ 349 $ 4,346 Contractual terminations 101 $ 599 Total severance and restructuring costs $ 450 $ 4,945
Summary of Restructuring Reserve	A summary of activity for the six months ended June 30, 2023 and 2022, for restructuring-related liabilities associated with the strategic business plan, which is included within accrued compensation and benefits and other current liabilities within the Condensed Consolidated Balance Sheet, is as follows: (Dollars in thousands) Balance at December 31, 2021 $ — Restructuring and other charges 4,495 Payments (34) Non-cash adjustment (124) Balance at March 31, 2022 $ 4,337 Restructuring and other charges 525 Payments (2,302) Non-cash adjustment (188) Balance at June 30, 2022 $ 2,372 Balance at December 31, 2022 $ 2,208 Restructuring and other charges — Payments (2,051) Non-cash adjustment (4) Balance at March 31, 2023 $ 153 Restructuring and other charges — Payments (148) Non-cash adjustment (5) Balance at June 30, 2023 $ —

Revenue, Deferred Revenue And_2

Revenue, Deferred Revenue And Prepaid Commissions (Tables)	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Revenue	The following table presents our revenues disaggregated by revenue type: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Revenue: Paging revenue $ 18,271 $ 18,141 $ 36,796 $ 36,454 Product and other revenue 606 559 1,109 1,093 Wireless revenue $ 18,877 $ 18,700 $ 37,905 $ 37,547 License $ 3,692 $ 1,962 $ 5,310 $ 3,786 Professional services 3,837 3,331 7,076 6,667 Hardware 933 507 1,289 1,096 Operations revenue 8,462 5,800 13,675 11,549 Maintenance 9,124 9,210 18,063 18,439 Software revenue $ 17,586 $ 15,010 $ 31,738 $ 29,988 Total revenue $ 36,463 $ 33,710 $ 69,643 $ 67,535 For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 United States $ 35,649 $ 32,553 $ 67,860 $ 65,325 International 814 1,157 1,783 2,210 Total revenue $ 36,463 $ 33,710 $ 69,643 $ 67,535
Schedule of Deferred Revenue	Changes in the balance of total deferred revenue during the six months ended June 30, 2023, are as follows: (Dollars in thousands) December 31, 2022 Additions Revenue Recognized June 30, 2023 Deferred Revenue $ 27,505 $ 27,624 $ (30,906) $ 24,223
Schedule of Deferred Commissions	Changes in the balance of total prepaid commissions during the six months ended June 30, 2023 are as follows: (Dollars in thousands) December 31, 2022 Additions Commissions Recognized June 30, 2023 Prepaid Commissions $ 1,745 $ 2,271 $ (2,295) $ 1,721

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Schedule of Lease Costs	The following table presents lease costs disaggregated by type: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Operating lease cost $ 1,171 $ 1,379 $ 2,351 $ 2,861 Short-term lease cost 2,262 2,448 4,539 5,081 Total lease cost $ 3,433 $ 3,827 $ 6,890 $ 7,942 The following table presents supplemental cash flow information: For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities - operating leases $ 2,661 $ 2,945 The following table presents the weighted average remaining lease term and discount rate: June 30, (Dollars in thousands) 2023 2022 Weighted average remaining lease term - operating leases (in years) 4.70 4.80 Weighted average discount rate - operating leases 4.86% 4.37%
Schedule of Maturities of Lease Liabilities	Maturities of lease liabilities as of June 30, 2023, were as follows: For the Year Ended December 31, (Dollars in thousands) 2023 (remaining six months) $ 2,473 2024 4,151 2025 3,158 2026 2,420 2027 1,206 Thereafter 2,505 Total future lease payments 15,913 Imputed interest (1,700) Total $ 14,213

Consolidated Financial Statem_2

Consolidated Financial Statement Components (Tables)	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Depreciation, Amortization and Accretion	Depreciation 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) 2023 2022 2023 2022 Depreciation Leasehold improvements $ 14 $ 16 $ 27 $ 35 Asset retirement costs 64 (175) 130 (350) Paging and computer equipment 967 800 1,905 1,650 Furniture, fixtures and vehicles 56 60 111 130 Total depreciation 1,101 701 2,173 1,465 Accretion 164 170 328 340 Total depreciation and accretion expense $ 1,265 $ 871 $ 2,501 $ 1,805
Schedule of Property, Plant and Equipment	Property and equipment, net consisted of the following as of the dates stated: (Dollars in thousands) Useful Life June 30, 2023 December 31, 2022 Leasehold improvements shorter of useful life or lease term $ 2,553 $ 2,497 Asset retirement costs 1-5 3,848 3,848 Paging and computer equipment 1-5 87,432 88,427 Furniture, fixtures and vehicles 3-5 3,174 3,289 Total property and equipment 97,007 98,061 Accumulated depreciation (89,138) (89,838) Total property and equipment, net $ 7,869 $ 8,223

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	6 Months Ended
	Jun. 30, 2023
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Changes in Asset Retirement Obligation Liabilities	The components of the changes in the asset retirement obligation liabilities were: (Dollars in thousands) Short-Term Long-Term Total Balance at December 31, 2022 $ 243 $ 7,237 $ 7,480 Accretion (2) 330 328 Amounts paid (132) — (132) Reclassifications 112 (112) — Balance at June 30, 2023 $ 221 $ 7,455 $ 7,676

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Schedule of Cash Dividends Declared	The following table details our cash dividends declared and paid in 2023 through the date hereof: (Dollars in thousands) Declaration Date Record Date Payment Date Per Share Amount Total Declared (1) February 22, 2023 March 16, 2023 March 30, 2023 $ 0.3125 $ 6,549 May 3, 2023 May 25, 2023 June 23, 2023 0.3125 6,538 Total $ 0.6250 $ 13,087 (1) The total declared reflects the cash dividends declared in relation to common stock, deferred stock units ("DSUs") and unvested RSUs.
Schedule of Basic and Diluted Net Loss Per Common Shares	The components of basic and diluted net income (loss) 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) 2023 2022 2023 2022 Numerator: Net income (loss) $ 4,733 $ 1,924 $ 7,850 $ (5,290) Denominator: Basic weighted average common shares outstanding 19,957,786 19,693,659 19,927,782 19,645,680 Diluted weighted average common shares outstanding 20,255,248 19,807,430 20,266,914 19,645,680 Basic net income (loss) per common share $ 0.24 $ 0.10 $ 0.39 $ (0.27) Diluted net income (loss) per common share $ 0.23 $ 0.10 $ 0.39 $ (0.27)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	For the three and six months ended June 30, 2023, and 2022 the following securities were excluded from the calculation of diluted shares outstanding as the effect would have been anti-dilutive: For the Three Months Ended June 30, For the Six Months Ended June 30, 2023 2022 2023 2022 Restricted stock units — — — 277,381
Schedule of Activities Under Equity Plan	The following table summarizes the activities under the Equity Plans from January 1, 2023, through June 30, 2023: Activity Total equity securities available at January 1, 2023 683,052 RSU, DSU, and restricted stock awarded to eligible employees, net of forfeitures (408,775) Total equity securities available at June 30, 2023 274,277 Activity Total ESPP equity securities available at January 1, 2023 133,184 ESPP common stock purchased by eligible employees (12,558) Total ESPP securities available at June 30, 2023 120,626
Summary of Outstanding RSUs	The following table details activities with respect to outstanding RSUs, DSUs, and restricted stock under the Equity Plans for the six months ended June 30, 2023: Shares Weighted Unvested at January 1, 2023 1,015,749 $ 10.25 Granted 452,978 8.30 Vested (373,103) 11.21 Forfeited (44,203) 10.91 Unvested at June 30, 2023 1,051,421 $ 9.04
Schedule of Stock Based Compensation Expense	The following table reflects the items for stock-based compensation expense in the Condensed Consolidated Statements of Operations for the periods stated: For the Three Months Ended June 30, For the Six Months Ended June 30, (Dollars in thousands) 2023 2022 2023 2022 Performance-based RSUs $ 373 $ 383 $ 754 $ 843 Time-based RSUs, DSUs and restricted stock 535 578 1,077 1,233 ESPP 15 — 28 — Total stock-based compensation $ 923 $ 961 $ 1,859 $ 2,076

Organization and Significant _3

Organization and Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred revenue	$ 23,984	$ 27,255
Prior Period Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred revenue		$ 1,000

Restructuring - Additional Info

Restructuring - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2022 position	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Restructuring and Related Activities [Abstract]
Number of positions to be eliminated | position	176
Severance and restructuring | $		$ 108	$ 450	$ 118	$ 4,945

Restructuring - Restructuring C

Restructuring - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Restructuring and Related Activities [Abstract]
Severance and personnel related costs		$ 349		$ 4,346
Contractual terminations		101		599
Restructuring and other charges	$ 108	$ 450	$ 118	$ 4,945

Restructuring - Activity for Re

Restructuring - Activity for Restructuring Related Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning balance	$ 153	$ 2,208	$ 4,337	$ 0
Restructuring and other charges	0	0	525	4,495
Payments	(148)	(2,051)	(2,302)	(34)
Non-cash adjustment	(5)	(4)	(188)	(124)
Ending balance	$ 0	$ 153	$ 2,372	$ 4,337

Revenue, Deferred Revenue And_3

Revenue, Deferred Revenue And Prepaid Commissions - Additional Information and Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) revenue_component	Jun. 30, 2022 USD ($)
Revenues from External Customers and Long-Lived Assets
Total revenue	$ 36,463	$ 33,710	$ 69,643	$ 67,535
Deferred revenue recognized from previous period			18,100
United States
Revenues from External Customers and Long-Lived Assets
Total revenue	35,649	32,553	67,860	65,325
International
Revenues from External Customers and Long-Lived Assets
Total revenue	814	1,157	$ 1,783	2,210
Wireless revenue
Revenues from External Customers and Long-Lived Assets
Revenue primary component | revenue_component			2
Total revenue	18,877	18,700	$ 37,905	37,547
Paging revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	18,271	18,141	36,796	36,454
Product and other revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	606	559	$ 1,109	1,093
Software revenue
Revenues from External Customers and Long-Lived Assets
Revenue primary component | revenue_component			2
Total revenue	17,586	15,010	$ 31,738	29,988
License
Revenues from External Customers and Long-Lived Assets
Total revenue	3,692	1,962	5,310	3,786
Professional services
Revenues from External Customers and Long-Lived Assets
Total revenue	3,837	3,331	7,076	6,667
Hardware
Revenues from External Customers and Long-Lived Assets
Total revenue	933	507	1,289	1,096
Operations revenue
Revenues from External Customers and Long-Lived Assets
Total revenue	8,462	5,800	13,675	11,549
Maintenance
Revenues from External Customers and Long-Lived Assets
Total revenue	$ 9,124	$ 9,210	$ 18,063	$ 18,439

Revenue, Deferred Revenue And_4

Revenue, Deferred Revenue And Prepaid Commissions - Deferred Revenues (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Contract With Customer, Asset And Liability [Roll Forward]
Beginning balance	$ 27,505
Additions	27,624
Revenue Recognized	(30,906)
Ending balance	$ 24,223

Revenue, Deferred Revenue And_5

Revenue, Deferred Revenue And Prepaid Commissions - Prepaid Commissions (Details) - Prepaid Commissions $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Capitalized Contract Cost [Roll Forward]
Beginning balance	$ 1,745
Additions	2,271
Commissions Recognized	(2,295)
Ending balance	$ 1,721

Revenue, Deferred Revenue And_6

Revenue, Deferred Revenue And Prepaid Commissions - Remaining Performance Obligations (Details) $ in Millions	Jun. 30, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 57
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 40.9
Remaining performance obligation, period	12 months

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	1 Months Ended	6 Months Ended
	May 31, 2022 USD ($) lease	Jun. 30, 2023 USD ($) renewal	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Termination term		1 year
Number of leases extended | lease	23
Operating lease, term of contract	10 years
Operating lease, notification of termination period	45 days
Operating lease liabilities	$ 2,900	$ 14,213
Operating lease right-of-use assets	$ 2,900	$ 12,713	$ 13,876
IncreaseDecreaseInOperatingLeaseRightOfUseAsset			$ 1,800
Minimum
Lessee, Lease, Description [Line Items]
Number of renewal options | renewal		1
Maximum
Lessee, Lease, Description [Line Items]
Number of renewal options | renewal		5

Leases - Lease Costs (Details)

Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating lease cost	$ 1,171	$ 1,379	$ 2,351	$ 2,861
Short-term lease cost	2,262	2,448	4,539	5,081
Total lease cost	$ 3,433	$ 3,827	6,890	7,942
Cash paid for amounts included in the measurement of lease liabilities - operating leases			$ 2,661	$ 2,945
Weighted-average remaining lease term - operating leases (in years)	4 years 8 months 12 days	4 years 9 months 18 days	4 years 8 months 12 days	4 years 9 months 18 days
Weighted-average discount rate - operating leases	4.86%	4.37%	4.86%	4.37%

Leases - Lease Maturities (Deta

Leases - Lease Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	May 31, 2022
Leases [Abstract]
2023 (remaining six months)	$ 2,473
2024	4,151
2025	3,158
2026	2,420
2027	1,206
Thereafter	2,505
Total future lease payments	15,913
Imputed interest	(1,700)
Total	$ 14,213	$ 2,900

Consolidated Financial Statem_3

Consolidated Financial Statement Components - Depreciation, Amortization and Accretion (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment [Line Items]
Total depreciation	$ 1,101	$ 701	$ 2,173	$ 1,465
Accretion	164	170	328	340
Depreciation and accretion	1,265	871	2,501	1,805
Leasehold improvements
Property, Plant and Equipment [Line Items]
Depreciation	14	16	27	35
Asset retirement costs
Property, Plant and Equipment [Line Items]
Asset retirement costs	64	(175)	130	(350)
Paging and computer equipment
Property, Plant and Equipment [Line Items]
Depreciation	967	800	1,905	1,650
Furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Depreciation	$ 56	$ 60	$ 111	$ 130

Consolidated Financial Statem_4

Consolidated Financial Statement Components - Accounts Receivable, Net (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for doubtful accounts receivable	$ 1.6	$ 1.8
Unbilled receivables	$ 9.1	$ 5.9

Consolidated Financial Statem_5

Consolidated Financial Statement Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 97,007	$ 98,061
Accumulated depreciation	(89,138)	(89,838)
Total property and equipment, net	7,869	8,223
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	2,553	2,497
Asset retirement costs
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,848	3,848
Asset retirement costs | Minimum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	1 year
Asset retirement costs | Maximum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	5 years
Paging and computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 87,432	88,427
Paging and computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	1 year
Paging and computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	5 years
Furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,174	$ 3,289
Furniture, fixtures and vehicles | Minimum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	3 years
Furniture, fixtures and vehicles | Maximum
Property, Plant and Equipment [Line Items]
Useful Life (In Years)	5 years

Asset Retirement Obligations -

Asset Retirement Obligations - Changes in Asset Retirement Obligation Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at December 31, 2022			$ 7,480
Accretion	$ 164	$ 170	328	$ 340
Amounts paid			(132)
Reclassifications			0
Balance at June 30, 2023	7,676		7,676
Short-Term Portion
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at December 31, 2022			243
Accretion			(2)
Amounts paid			(132)
Reclassifications			(112)
Balance at June 30, 2023	221		221
Long-Term Portion
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at December 31, 2022			7,237
Accretion			330
Amounts paid			0
Reclassifications			112
Balance at June 30, 2023	$ 7,455		$ 7,455

Asset Retirement Obligations _2

Asset Retirement Obligations - Additional Information (Details) $ in Millions	Jun. 30, 2023 USD ($)
Asset Retirement Obligation Disclosure [Abstract]
Estimated liability	$ 9.1

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($)		6 Months Ended
	Jul. 25, 2023	Jun. 30, 2023	Jun. 30, 2022	Jul. 26, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Feb. 16, 2022	Dec. 31, 2021	Jul. 28, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (in shares)		75,000,000
Common stock par value (in usd per share)		$ 0.0001
Preferred stock authorized (in shares)		25,000,000
Preferred stock par value (in usd per share)		$ 0.0001
Options outstanding (in shares)		0				0
Preferred stock outstanding (in shares)		0				0
Common stock repurchase program, authorized amount								$ 10,000,000
Shares reserved for future issuance (in shares)										1,699,950
Unvested RSUs, DSUs and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)		1,051,421				1,015,749
Shares issued, weighted average grant date fair value (in usd per share)		$ 8.30
2012 Equity Plan | Contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)		540,058
2012 Equity Plan | Restricted Stock and Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized, share-based awards other than options		$ 4,400,000
Weighted-average period over which cost is expected to be recognized		1 year 9 months 18 days
2020 Equity Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
2020 Equity Plan | Contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
2020 Equity Plan | Non-contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		250,000
Award required holding period		2 years
Issuance of common stock under the employee stock purchase plan (in shares)		12,558	0
ESPP | Maximum
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 (in usd per share)				$ 0.3125
Dividends declared				$ 6,200,000
Shares reserved for future issuance (in shares)	1,268,444
Additional shares available for issuance under the 2020 Equity Plan (in shares)	1,000,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)		19,962,062	19,693,657		19,941,852	19,703,800	19,693,679		19,481,429

Stockholders' Equity - Cash Div

Stockholders' Equity - Cash Dividends Declared to Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per Share Amount (in usd per share)	$ 0.3125		$ 0.3125		$ 0.6250	$ 0.6250
Total declared	$ 6,538	$ 6,549	$ 6,357	$ 6,513
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per Share Amount (in usd per share)					$ 0.6250
Total declared					$ 13,087
Common Stock | Installment One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Declaration Date					Feb. 22, 2023
Record Date					Mar. 16, 2023
Payment Date					Mar. 30, 2023
Per Share Amount (in usd per share)					$ 0.3125
Total declared					$ 6,549
Common Stock | Installment Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Declaration Date					May 03, 2023
Record Date					May 25, 2023
Payment Date					Jun. 23, 2023
Per Share Amount (in usd per share)					$ 0.3125
Total declared					$ 6,538

Stockholders' Equity - Basic an

Stockholders' Equity - Basic and Diluted Net Income (Loss) Per Common Shares (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income (loss)	$ 4,733	$ 3,117	$ 1,924	$ (7,214)	$ 7,850	$ (5,290)
Denominator:
Basic weighted average common shares outstanding (in shares)	19,957,786		19,693,659		19,927,782	19,645,680
Diluted weighted average common shares outstanding (in shares)	20,255,248		19,807,430		20,266,914	19,645,680
Basic net income (loss) per common share (in usd per share)	$ 0.24		$ 0.10		$ 0.39	$ (0.27)
Diluted net income (loss) per common share (in usd per share)	$ 0.23		$ 0.10		$ 0.39	$ (0.27)

Stockholders' Equity - Antidilu

Stockholders' Equity - Antidilutive Securities Excluded from Computation of Net Income Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity [Abstract]
Restricted stock units (in shares)	0	0	0	277,381

Stockholders' Equity - Activiti

Stockholders' Equity - Activities Under Equity Plan (Details)	6 Months Ended
	Jun. 30, 2023 shares
ESPP
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Shares available for grant (in shares)	133,184
ESPP common stock purchased by eligible employees (in shares)	(12,558)
Shares available for grant (in shares)	120,626
Unvested RSUs, DSUs and Restricted Stock
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
RSU, DSU, and restricted stock awarded to eligible employees, net of forfeitures (in shares)	(452,978)
Unvested RSUs, DSUs and Restricted Stock | 2012 Equity Plan
Share-based Compensation Arrangement By Share-based Payment Award, Shares Authorized [Roll Forward]
Shares available for grant (in shares)	683,052
RSU, DSU, and restricted stock awarded to eligible employees, net of forfeitures (in shares)	(408,775)
Shares available for grant (in shares)	274,277

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Outstanding RSUs (Details) - Unvested RSUs, DSUs and Restricted Stock	6 Months Ended
	Jun. 30, 2023 $ / shares shares
Shares
Beginning balance (in shares) | shares	1,015,749
Granted (in shares) | shares	452,978
Vested (in shares) | shares	(373,103)
Forfeited (in shares) | shares	(44,203)
Ending balance (in shares) | shares	1,051,421
Weighted Average Grant Date Fair Value
Beginning balance (in usd per share) | $ / shares	$ 10.25
Granted (in usd per share) | $ / shares	8.30
Vested (in usd per share) | $ / shares	11.21
Forfeited (in usd per share) | $ / shares	10.91
Ending balance (in usd per share) | $ / shares	$ 9.04

Stockholders' Equity - Stock-ba

Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 923	$ 961	$ 1,859	$ 2,076
Performance-based RSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	373	383	754	843
Time-based RSUs, DSUs and restricted stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	535	578	1,077	1,233
ESPP
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 15	$ 0	$ 28	$ 0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Income Tax Contingency [Line Items]
Deferred income tax assets, net	$ 48,992	$ 52,398
Valuation allowance	$ 2,300	$ 2,300

Related Parties (Details)

Related Parties (Details) - Related Party - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Related Party Transaction [Line Items]
Revenues		$ 0.2	$ 0.3	$ 0.3
Director
Related Party Transaction [Line Items]
Revenues	$ 0.1