CompX International (CIX) 10-K2 Mar 222021 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2021	Feb. 22, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Trading Symbol	CIX
Entity Registrant Name	COMPX INTERNATIONAL INC
Entity Central Index Key	0001049606
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	1-13905
Entity Tax Identification Number	57-0981653
Entity Address, Address Line One	5430 LBJ Freeway
Entity Address, Address Line Two	Suite 1700
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75240-2620
City Area Code	972
Local Phone Number	448-1400
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Class A common stock
Security Exchange Name	NYSEAMER
Entity Common Stock, Shares Outstanding		12,380,657
Entity Public Float			$ 34.1
Document Annual Report	true
Document Transition Report	false
ICFR Auditor Attestation Flag	false
Documents Incorporated by Reference	The information required by Part III is incorporated by reference from the Registrant’s definitive proxy statement to be filed with the Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this report.
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Dallas, Texas

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 76,579	$ 70,637
Accounts receivable, net	15,546	10,731
Inventories, net	25,642	18,337
Prepaid expenses and other	2,464	1,541
Total current assets	120,231	101,246
Other assets:
Note receivable from affiliate	18,700	29,500
Goodwill	23,742	23,742
Other noncurrent	597	607
Total other assets	43,039	53,849
Property and equipment:
Land	5,071	4,940
Buildings	23,161	23,146
Equipment	70,664	68,227
Construction in progress	2,028	1,010
Gross property and equipment	100,924	97,323
Less accumulated depreciation	71,742	68,373
Net property and equipment	29,182	28,950
Total assets	192,452	184,045
Current liabilities:
Accounts payable and accrued liabilities	14,724	12,198
Income taxes payable to affiliate	1,722	952
Total current liabilities	16,446	13,150
Noncurrent liabilities -
Noncurrent liabilities - deferred income taxes	2,918	3,239
Stockholders' equity:
Common stock	124	124
Additional paid-in capital	54,780	55,987
Retained earnings	118,184	111,545
Total stockholders' equity	173,088	167,656
Total liabilities and stockholders' equity	192,452	184,045
Commitments and contingencies (Note 10)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Common stock, shares issued	12,380,657	12,451,157
Common stock, shares outstanding	12,380,657	12,451,157
Class A Common Stock
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	12,451,157	12,451,157
Common stock, shares outstanding	12,380,657	12,380,657

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 140,815	$ 114,537	$ 124,243
Cost of sales	98,066	81,689	85,280
Gross margin	42,749	32,848	38,963
Selling, general and administrative expense	22,223	21,031	21,297
Operating income	20,526	11,817	17,666
Interest income	1,197	1,680	3,270
Income before income taxes	21,723	13,497	20,936
Provision for income taxes	5,155	3,174	4,938
Net income	$ 16,568	$ 10,323	$ 15,998
Net income per basic share	$ 1.34	$ 0.83	$ 1.29
Net income per diluted share	$ 1.34	$ 0.83	$ 1.29
Weighted average shares outstanding - basic	12,411	12,448	12,440
Weighted average shares outstanding - diluted	12,411	12,448	12,440

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common StockClass A Common Stock	Additional paid-in Capital	Retained Earnings	Treasury Stock	Total
Balance at Dec. 31, 2018	$ 124	$ 55,751	$ 93,687		$ 149,562
Net income			15,998		15,998
Cash dividends			(3,483)		(3,483)
Issuance of common stock		118			118
Balance at Dec. 31, 2019	124	55,869	106,202		162,195
Net income			10,323		10,323
Cash dividends			(4,980)		(4,980)
Issuance of common stock		118			118
Balance at Dec. 31, 2020	124	55,987	111,545		167,656
Net income			16,568		16,568
Cash dividends			(9,929)		(9,929)
Issuance of common stock		104			104
Treasury stock:
Acquired				$ (1,311)	(1,311)
Retired		(1,311)		$ 1,311
Balance at Dec. 31, 2021	$ 124	$ 54,780	$ 118,184		$ 173,088

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Stockholders Equity [Abstract]
Cash dividends per share	$ 0.80	$ 0.40	$ 0.28

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 16,568	$ 10,323	$ 15,998
Depreciation and amortization	3,839	3,827	3,684
Deferred income taxes	(321)	(48)	89
Other, net	269	346	458
Change in assets and liabilities:
Accounts receivable, net	(4,806)	1,118	250
Inventories, net	(7,479)	(193)	(1,439)
Accounts payable and accrued liabilities	2,547	95	(399)
Accounts with affiliates	854	449	(203)
Prepaids and other, net	(997)	(415)	27
Net cash provided by operating activities	10,474	15,502	18,465
Cash flows from investing activities:
Capital expenditures	(4,094)	(1,740)	(3,166)
Proceeds from sale of fixed assets, net	2		125
Note receivable from affiliate:
Collections	40,600	33,428	40,800
Advances	(29,800)	(34,828)	(34,900)
Net cash provided by (used in) investing activities	6,708	(3,140)	2,859
Cash flows from financing activities:
Dividends paid	(9,929)	(4,980)	(3,483)
Treasury stock acquired	(1,311)
Net cash used in financing activities	(11,240)	(4,980)	(3,483)
Net change for the year	5,942	7,382	17,841
Balance at beginning of period	70,637	63,255	45,414
Balance at end of period	76,579	70,637	63,255
Supplemental disclosures -
Cash paid for income taxes	$ 4,700	$ 3,261	$ 5,027

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 – Organization. Unless otherwise indicated, references in this report to “we,” “us,” or “our” refer to CompX International Inc. and its subsidiaries, taken as a whole. Management estimates. Principles of consolidation . Fiscal year. Cash and cash equivalents . Net sales . Revenue from Contracts with Customers, arrangements shipping and handling are considered fulfillment activities, and accordingly, such costs are accrued when the related revenue is recognized. Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our products. Prices for our products are based on terms specified in published list prices and purchase orders, which generally do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component. We state sales net of price, early payment and distributor discounts as well as volume rebates (collectively, variable consideration). Variable consideration, to the extent present, is not material and is recognized as the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. Differences, if any, between estimates of the amount of variable consideration to which we will be entitled and the actual amount of such variable consideration have not been material in the past. We report any tax assessed by a governmental authority that we collect from our customers that is both imposed on and concurrent with our revenue-producing activities (such as sales, use, value added and excise taxes) on a net basis (meaning we do not recognize these taxes either in our revenues or in our costs and expenses). Frequently, we receive orders for products to be delivered over dates that may extend across reporting periods. We invoice for each delivery upon shipment and recognize revenue for each distinct shipment when all sales recognition criteria for that shipment have been satisfied. As scheduled delivery dates for these orders are within a one year period, under the optional exemption provided by ASC 606, we do not disclose sales allocated to future shipments of partially completed contracts. We have determined that our disclosure of sales by segment meets the requirements to disclose a disaggregation of our sales into categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. See Note 2. Accounts receivable. Inventories and cost of sales . Selling, general and administrative expenses; advertising costs. Goodwill. Property and equipment; depreciation expense . We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform the impairment test by comparing the estimated future undiscounted cash flows associated with the asset to the asset’s net carrying value to determine if impairment exists. Leases. Leases Employee benefit plans. Self-insurance. Income taxes . As a member of the Contran Tax Group, we are a party to a tax sharing agreement which provides that we compute our provision for U.S. income taxes on a separate-company basis. Pursuant to the tax sharing agreement, we make payments to or receive payments from NL in amounts we would have paid to or received from the U.S. Internal Revenue Service or the applicable state tax authority had we not been a member of the Contran Tax Group. The separate company provisions and payments are computed using the tax elections made by Contran. We made net cash payments for income taxes to NL of $5.0 million in 2019, $3.2 million in 2020 and $4.7 million in 2021. Deferred income tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of deferred tax assets which we believe do not meet the more-likely-than-not recognition criteria. See Notes 7 and 10. We record a reserve for uncertain tax positions for tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. We did not have a reserve for uncertain tax positions in 2019, 2020 or 2021.

Business and Geographic Segment

Business and Geographic Segments	12 Months Ended
Business and Geographic Segments	Dec. 31, 2021
Segment Reporting [Abstract]
Business and Geographic Segments	Note 2 – Our operating segments are defined as components of our operations about which separate financial information is available that is regularly evaluated by our chief operating decision maker in determining how to allocate resources and in assessing performance. At December 31, 2021, we had two reportable operating segments – Security Products and Marine Components. The Security Products segment, with a facility in South Carolina and a facility shared with Marine Components in Illinois, manufactures locking mechanisms and other security products for sale to the transportation, postal, office and institutional furniture, cabinetry, tool storage, healthcare and other industries. Our Marine Components segment, with a facility in Wisconsin and a facility shared with Security Products in Illinois, manufactures and distributes stainless steel exhaust systems, gauges, throttle controls, wake enhancement systems, trim tabs and related hardware and accessories primarily for performance and ski/wakeboard boats. The chief operating decision maker evaluates segment performance based on segment operating income, which is defined as income before income taxes, exclusive of certain general corporate income and expense items (primarily interest income) and certain non-recurring items (such as gains or losses on the disposition of long-lived assets outside the ordinary course of business). The accounting policies of the reportable operating segments are the same as those described in Note 1. Capital expenditures include additions to property and equipment but exclude amounts attributable to business combinations. Segment assets are comprised of all assets attributable to the reportable segments. Corporate assets are not attributable to the operating segments and consist primarily of cash, cash equivalents and note receivable from affiliate. For geographic information, the point of origin (place of manufacture) for all net sales is the U.S., the point of destination for net sales is based on the location of the customer, and property and equipment are attributable to their physical location. Intersegment sales are not material. Years ended December 31, 2019 2020 2021 (In thousands) Net sales: Security Products $ 99,328 $ 87,863 $ 105,124 Marine Components 24,915 26,674 35,691 Total net sales $ 124,243 $ 114,537 $ 140,815 Operating income (loss): Security Products $ 21,013 $ 14,926 $ 21,622 Marine Components 3,644 4,088 5,591 Corporate operating expenses (6,991) (7,197) (6,687) Total operating income 17,666 11,817 20,526 Interest income 3,270 1,680 1,197 Income before income taxes $ 20,936 $ 13,497 $ 21,723 Depreciation and amortization: Security Products $ 3,056 $ 3,069 $ 2,890 Marine Components 627 757 940 Corporate 1 1 9 Total $ 3,684 $ 3,827 $ 3,839 Capital expenditures: Security Products $ 1,530 $ 1,252 $ 1,044 Marine Components 1,636 458 3,050 Corporate — 30 — Total $ 3,166 $ 1,740 $ 4,094 Net sales point of destination: United States $ 114,186 $ 107,712 $ 129,160 Canada 7,257 4,423 8,061 Mexico 922 431 589 Other 1,878 1,971 3,005 Total $ 124,243 $ 114,537 $ 140,815 December 31, 2019 2020 2021 (In thousands) Total assets: Security Products $ 73,697 $ 70,755 $ 78,193 Marine Components 15,256 15,515 18,167 Corporate 89,591 97,775 96,092 Total $ 178,544 $ 184,045 $ 192,452 Net property and equipment for 2019, 2020 and 2021 is entirely located within the United States.

Accounts Receivable, Net

Accounts Receivable, Net	12 Months Ended
Accounts Receivable, Net	Dec. 31, 2021
Receivables [Abstract]
Accounts Receivable, Net	Note 3 – December 31, December 31, 2020 2021 (In thousands) Accounts receivable, net: Security Products $ 8,797 $ 12,896 Marine Components 2,004 2,720 Allowance for doubtful accounts (70) (70) Total accounts receivable, net $ 10,731 $ 15,546

Inventories, net

Inventories, net	12 Months Ended
Inventories, net	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories, net	Note 4 – December 31, December 31, 2020 2021 (In thousands) Raw materials: Security Products $ 2,318 $ 3,640 Marine Components 902 1,402 Total raw materials 3,220 5,042 Work-in-process: Security Products 9,214 12,721 Marine Components 2,454 4,046 Total work-in-process 11,668 16,767 Finished goods: Security Products 2,235 2,271 Marine Components 1,214 1,562 Total finished goods 3,449 3,833 Total inventories, net $ 18,337 $ 25,642

Goodwill

Goodwill	12 Months Ended
Goodwill	Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	Note 5 – We assign goodwill based on reporting unit Goodwill In 2019, 2020 and 2021, our goodwill was tested for impairment only in the third quarter of each year in connection with our annual testing date. No impairment was indicated as part of such annual reviews of goodwill. As permitted by GAAP, during each of 2019, 2020 and 2021 we used the qualitative assessment of ASC 350-20-35 for our annual impairment test and determined it was not necessary to perform the quantitative goodwill impairment test. Our gross goodwill at December 31, 2021 is $33.6 million. Prior to 2019, we recorded a $9.9 million goodwill impairment in our Marine Components segment resulting in a net consolidated carrying amount of $23.7 million. There have been no changes in the carrying amount of our goodwill during the past three years.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	12 Months Ended
Accounts Payable and Accrued Liabilities	Dec. 31, 2021
Payables And Accruals [Abstract]
Accounts Payable and Accrued Liabilities	Note 6 – December 31, 2020 2021 (In thousands) Accounts payable: Security Products $ 1,859 $ 2,594 Marine Components 773 814 Accrued liabilities: Employee benefits 8,431 9,797 Customer tooling 393 516 Taxes other than on income 301 391 Insurance 172 208 Sales rebates 79 48 Other 190 356 Total accounts payable and accrued liabilities $ 12,198 $ 14,724

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 – The provision for income taxes and the difference between such provision for income taxes and the amount that would be expected using the U.S. federal statutory income tax rate of 21% are presented below. All of our pre-tax income relates to operations in the United States. Years ended December 31, 2019 2020 2021 (In thousands) Provision for income taxes: Currently payable $ 4,849 $ 3,222 $ 5,476 Deferred income tax expense (benefit) 89 (48) (321) Total $ 4,938 $ 3,174 $ 5,155 Expected tax expense, at the U.S. federal statutory income tax rate of 21% $ 4,397 $ 2,835 $ 4,562 State income taxes 742 378 692 FDII benefit (201) (55) (120) Other, net — 16 21 Total provision for income taxes $ 4,938 $ 3,174 $ 5,155 Under the “Tax Cuts and Jobs Act,” domestic corporations who are U.S. exporters with no foreign operations may be eligible for a deduction under the foreign derived intangible income provisions. We qualify for this deduction and recognized a current cash tax benefit of $0.2 million in 2019 ($0.1 million of such current cash tax benefit is related to 2018) and $0.1 million in each of 2020 and 2021. See also Note 10 to our Consolidated Financial Statements. The components of the net deferred tax liability are summarized below. December 31, 2020 2021 (In thousands) Tax effect of temporary differences related to: Inventories $ 356 $ 531 Property and equipment (2,887) (2,951) Accrued liabilities and other deductible differences 18 39 Accrued employee benefits 982 1,182 Goodwill (1,693) (1,693) Other taxable differences (15) (26) Total deferred tax liability $ (3,239) $ (2,918) We and Contran file income tax returns in U.S. federal and various state and local jurisdictions. Our income tax returns prior to 2018 are generally considered closed to examination by applicable tax authorities.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2021
Equity [Abstract]
Stockholders' Equity	Note 8 – Shares of common stock Issued Treasury Outstanding Balance at December 31, 2018 12,435,557 — 12,435,557 Issued 7,500 — 7,500 Balance at December 31, 2019 12,443,057 — 12,443,057 Issued 8,100 — 8,100 Balance at December 31, 2020 12,451,157 — 12,451,157 Issued 4,500 — 4,500 Acquired — (75,000) (75,000) Retired (75,000) 75,000 — Balance at December 31, 2021 12,380,657 — 12,380,657 Common stock. Share repurchases and cancellations. Incentive compensation plan. Dividends. and dependent upon our results of operations, financial condition, cash requirements for our businesses, contractual requirements and restrictions and other factors deemed relevant by our board of directors.

Related Party Transactions

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 9 – Related party transactions: We may be deemed to be controlled by Ms. Lisa Simmons and the Family Trust. See Note 1. Corporations that may be deemed to be controlled by or affiliated with these individuals sometimes engage in (a) intercorporate transactions such as guarantees, management and expense sharing arrangements, shared fee arrangements, joint ventures, partnerships, loans, options, advances of funds on open account, and sales, leases and exchanges of assets, including securities issued by both related and unrelated parties and (b) common investment and acquisition strategies, business combinations, reorganizations, recapitalizations, securities repurchases, and purchases and sales (and other acquisitions and dispositions) of subsidiaries, divisions or other business units, which transactions have involved both related and unrelated parties and have included transactions that resulted in the acquisition by one related party of a publicly-held minority equity interest in another related party. We continuously consider, review and evaluate, and understand that Contran and related entities consider, review and evaluate such transactions. Depending upon the business, tax and other objectives then relevant, it is possible that we might be a party to one or more such transactions in the future. From time to time, we may have loans and advances outstanding between us and various related parties pursuant to term and demand notes. We generally enter into these loans and advances for cash management purposes. When we loan funds to related parties, we are generally able to earn a higher rate of return on the loan than we would earn if we invested the funds in other instruments. While certain of these loans may be of a lesser credit quality than cash equivalent instruments otherwise available to us, we believe we have evaluated the credit risks in the terms of the applicable loans. In this regard, prior to 2019, we entered into an unsecured revolving demand promissory note with Valhi under which, as amended, we have agreed to loan Valhi up to $30 million. Our loan to Valhi, as amended, bears interest at prime plus 1.00%, payable quarterly, with all principal due on demand, but in any event no earlier than December 31, 2023. Loans made to Valhi at any time under the agreement are at our discretion. At the end of our fiscal year in 2020 and 2021, the outstanding principal balance receivable from Valhi under the promissory note was $29.5 million and $18.7 million, respectively. Interest income (including unused commitment fees) on our loan to Valhi was $2.4 million in 2019, $1.5 million in 2020 and $1.2 million in 2021. Under the terms of an Intercorporate Service Agreement (“ISA”) with Contran, employees of Contran perform certain management, tax planning, financial, legal and administrative services for us on a fee basis. Such fees are based upon the compensation of individual Contran employees providing services for us and/or estimates of time devoted to our affairs by such persons. Because of the number of companies affiliated with Contran, we believe we benefit from cost savings and economies of scale gained by not having certain management, financial and administrative staffs duplicated at each entity, thus allowing certain individuals to provide services to multiple companies but only be compensated by one entity. We negotiate ISA fees annually and agreements renew quarterly. Fees pursuant to these agreements aggregated $3.4 million in each of 2019, 2020, and 2021. Contran and certain of its subsidiaries and affiliates, including us, purchase certain of their insurance policies as a group, with the costs of the jointly-owned policies being apportioned among the participating companies. Tall Pines Insurance Company (“Tall Pines”), a subsidiary of Valhi, underwrites certain insurance policies for Contran and certain of its subsidiaries and affiliates, including us. Tall Pines purchases reinsurance from third-party insurance carriers with an A.M. Best Company rating of generally at least A-(Excellent) for substantially all of the risks it underwrites. EWI RE, Inc., a subsidiary of NL, brokered certain of our insurance policies, provided claims and risk management services and, where appropriate, engaged certain third-party risk management consultants prior to NL’s sale of EWI’s insurance and risk management business to a third party in November 2019. Consistent with insurance industry practices, Tall Pines receives commissions from reinsurance underwriters and/or assesses fees for certain of the policies that it underwrites, and prior to November 2019 EWI received commissions from the insurance and reinsurance underwriters for the policies that it brokered. The aggregate amounts we paid under the group insurance program was approximately $2.3 million through the date of the sale in 2019. This amount principally represents insurance premiums paid to Tall Pines or EWI, including amounts paid to EWI that EWI then remitted, net of brokerage commissions, to insurers. Following the sale of EWI’s insurance and risk management business, Contran engaged the third-party insurance broker that purchased the business to provide many of the services previously provided by EWI, and we continue to utilize Tall Pines to underwrite certain insurance risks. During 2020 and 2021, we paid $2.8 million and $2.9 million, respectively under the group insurance program, which amounts principally represent insurance premiums, including $.7 million and $.9 million, respectively, for policies written by Tall Pines. Amounts paid under the group insurance program also include payments to insurers or reinsurers (which prior to the sale were made through EWI) for the reimbursement of claims within our applicable deductible or retention ranges that such insurers and reinsurers paid to third parties on our behalf, as well as amounts for claims and risk management services and various other third-party fees and expenses incurred by the program. We expect that these relationships in place during 2021 will continue in 2022. With respect to certain of such jointly-owned insurance policies, it is possible that unusually large losses incurred by one or more insureds during a given policy period could leave the other participating companies without adequate coverage under that policy for the balance of the policy period. As a result, and in the event that the available coverage under a particular policy would become exhausted by one or more claims, Contran and certain of its subsidiaries and affiliates, including us, have entered into a loss sharing agreement under which any uninsured loss arising because the available coverage had been exhausted by one or more claims will be shared ratably amongst those entities that had submitted claims under the relevant policy. We believe the benefits, in the form of reduced premiums and broader coverage associated with the group coverage for such policies, justifies the risk associated with the potential for any uninsured loss.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10 – Legal proceedings Environmental matters and litigation Income taxes. We are a party to a tax sharing agreement with Contran and NL providing for the allocation of tax liabilities and tax payments as described in Note 1. Under applicable law, we, as well as every other member of the Contran Tax Group, are each jointly and severally liable for the aggregate federal income tax liability of Contran and the other companies included in the Contran Tax Group for all periods in which we are included in the Contran Tax Group. NL has agreed, however, to indemnify us for any liability for income taxes of the Contran Tax Group in excess of our tax liability in accordance with the tax sharing agreement. Concentration of credit risk

Financial Instruments

Financial Instruments	12 Months Ended
Financial Instruments	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Financial Instruments	Note 11 – The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure: December 31, 2020 December 31, 2021 Carrying Fair Carrying Fair amount value amount value (In thousands) Cash and cash equivalents $ 70,637 $ 70,637 $ 76,579 $ 76,579 Accounts receivable, net 10,731 10,731 15,546 15,546 Accounts payable 2,632 2,632 3,408 3,408 Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2021
Accounting Policies [Abstract]
Organization	Organization. Unless otherwise indicated, references in this report to “we,” “us,” or “our” refer to CompX International Inc. and its subsidiaries, taken as a whole.
Management Estimates	Management estimates.
Principles of Consolidation	Principles of consolidation .
Fiscal Year	Fiscal year.
Cash and Cash Equivalents	Cash and cash equivalents .
Net Sales	Net sales . Revenue from Contracts with Customers, arrangements shipping and handling are considered fulfillment activities, and accordingly, such costs are accrued when the related revenue is recognized. Revenue is recorded in an amount that reflects the net consideration we expect to receive in exchange for our products. Prices for our products are based on terms specified in published list prices and purchase orders, which generally do not include financing components, noncash consideration or consideration paid to our customers. As our standard payment terms are less than one year, we have elected the practical expedient under ASC 606 and we have not assessed whether a contract has a significant financing component. We state sales net of price, early payment and distributor discounts as well as volume rebates (collectively, variable consideration). Variable consideration, to the extent present, is not material and is recognized as the amount to which we are most-likely to be entitled, using all information (historical, current and forecasted) that is reasonably available to us, and only to the extent that a significant reversal in the amount of the cumulative revenue recognized is not probable of occurring in a future period. Differences, if any, between estimates of the amount of variable consideration to which we will be entitled and the actual amount of such variable consideration have not been material in the past. We report any tax assessed by a governmental authority that we collect from our customers that is both imposed on and concurrent with our revenue-producing activities (such as sales, use, value added and excise taxes) on a net basis (meaning we do not recognize these taxes either in our revenues or in our costs and expenses). Frequently, we receive orders for products to be delivered over dates that may extend across reporting periods. We invoice for each delivery upon shipment and recognize revenue for each distinct shipment when all sales recognition criteria for that shipment have been satisfied. As scheduled delivery dates for these orders are within a one year period, under the optional exemption provided by ASC 606, we do not disclose sales allocated to future shipments of partially completed contracts. We have determined that our disclosure of sales by segment meets the requirements to disclose a disaggregation of our sales into categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. See Note 2.
Accounts Receivable	Accounts receivable.
Inventories and Cost of Sales	Inventories and cost of sales .
Selling, General and Administrative Expenses; Advertising Costs	Selling, general and administrative expenses; advertising costs.
Goodwill	Goodwill.
Property and Equipment; Depreciation Expense	Property and equipment; depreciation expense . We perform impairment tests when events or changes in circumstances indicate the carrying value may not be recoverable. We consider all relevant factors. We perform the impairment test by comparing the estimated future undiscounted cash flows associated with the asset to the asset’s net carrying value to determine if impairment exists.
Leases	Leases. Leases
Employee Benefit Plans	Employee benefit plans.
Self-Insurance	Self-insurance.
Income Taxes	Income taxes . As a member of the Contran Tax Group, we are a party to a tax sharing agreement which provides that we compute our provision for U.S. income taxes on a separate-company basis. Pursuant to the tax sharing agreement, we make payments to or receive payments from NL in amounts we would have paid to or received from the U.S. Internal Revenue Service or the applicable state tax authority had we not been a member of the Contran Tax Group. The separate company provisions and payments are computed using the tax elections made by Contran. We made net cash payments for income taxes to NL of $5.0 million in 2019, $3.2 million in 2020 and $4.7 million in 2021. Deferred income tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amounts of assets and liabilities. Deferred income tax assets and liabilities for each tax-paying jurisdiction in which we operate are netted and presented as either a noncurrent deferred income tax asset or liability, as applicable. We periodically evaluate our deferred tax assets in the various taxing jurisdictions in which we operate and adjust any related valuation allowance based on the estimate of the amount of deferred tax assets which we believe do not meet the more-likely-than-not recognition criteria. See Notes 7 and 10. We record a reserve for uncertain tax positions for tax positions where we believe it is more-likely-than-not our position will not prevail with the applicable tax authorities. We did not have a reserve for uncertain tax positions in 2019, 2020 or 2021.

Business and Geographic Segme_2

Business and Geographic Segments (Tables)	12 Months Ended
Business and Geographic Segments (Tables)	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Business Segment Information	Years ended December 31, 2019 2020 2021 (In thousands) Net sales: Security Products $ 99,328 $ 87,863 $ 105,124 Marine Components 24,915 26,674 35,691 Total net sales $ 124,243 $ 114,537 $ 140,815 Operating income (loss): Security Products $ 21,013 $ 14,926 $ 21,622 Marine Components 3,644 4,088 5,591 Corporate operating expenses (6,991) (7,197) (6,687) Total operating income 17,666 11,817 20,526 Interest income 3,270 1,680 1,197 Income before income taxes $ 20,936 $ 13,497 $ 21,723 Depreciation and amortization: Security Products $ 3,056 $ 3,069 $ 2,890 Marine Components 627 757 940 Corporate 1 1 9 Total $ 3,684 $ 3,827 $ 3,839 Capital expenditures: Security Products $ 1,530 $ 1,252 $ 1,044 Marine Components 1,636 458 3,050 Corporate — 30 — Total $ 3,166 $ 1,740 $ 4,094
Business Segment Information by Geographical Areas	Net sales point of destination: United States $ 114,186 $ 107,712 $ 129,160 Canada 7,257 4,423 8,061 Mexico 922 431 589 Other 1,878 1,971 3,005 Total $ 124,243 $ 114,537 $ 140,815 December 31, 2019 2020 2021 (In thousands) Total assets: Security Products $ 73,697 $ 70,755 $ 78,193 Marine Components 15,256 15,515 18,167 Corporate 89,591 97,775 96,092 Total $ 178,544 $ 184,045 $ 192,452

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	12 Months Ended
Accounts Receivable, Net (Tables)	Dec. 31, 2021
Receivables [Abstract]
Schedule of Accounts Receivable, Net	December 31, December 31, 2020 2021 (In thousands) Accounts receivable, net: Security Products $ 8,797 $ 12,896 Marine Components 2,004 2,720 Allowance for doubtful accounts (70) (70) Total accounts receivable, net $ 10,731 $ 15,546

Inventories, net (Tables)

Inventories, net (Tables)	12 Months Ended
Inventories, net (Tables)	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories, net	December 31, December 31, 2020 2021 (In thousands) Raw materials: Security Products $ 2,318 $ 3,640 Marine Components 902 1,402 Total raw materials 3,220 5,042 Work-in-process: Security Products 9,214 12,721 Marine Components 2,454 4,046 Total work-in-process 11,668 16,767 Finished goods: Security Products 2,235 2,271 Marine Components 1,214 1,562 Total finished goods 3,449 3,833 Total inventories, net $ 18,337 $ 25,642

Accounts Payable and Accrued _2

Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
Accounts Payable and Accrued Liabilities (Tables)	Dec. 31, 2021
Payables And Accruals [Abstract]
Accounts Payable and Accrued Liabilities	December 31, 2020 2021 (In thousands) Accounts payable: Security Products $ 1,859 $ 2,594 Marine Components 773 814 Accrued liabilities: Employee benefits 8,431 9,797 Customer tooling 393 516 Taxes other than on income 301 391 Insurance 172 208 Sales rebates 79 48 Other 190 356 Total accounts payable and accrued liabilities $ 12,198 $ 14,724

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of Pre-tax Income and Provision for Income Taxes	Years ended December 31, 2019 2020 2021 (In thousands) Provision for income taxes: Currently payable $ 4,849 $ 3,222 $ 5,476 Deferred income tax expense (benefit) 89 (48) (321) Total $ 4,938 $ 3,174 $ 5,155 Expected tax expense, at the U.S. federal statutory income tax rate of 21% $ 4,397 $ 2,835 $ 4,562 State income taxes 742 378 692 FDII benefit (201) (55) (120) Other, net — 16 21 Total provision for income taxes $ 4,938 $ 3,174 $ 5,155
Components of Net Deferred Tax Liability	December 31, 2020 2021 (In thousands) Tax effect of temporary differences related to: Inventories $ 356 $ 531 Property and equipment (2,887) (2,951) Accrued liabilities and other deductible differences 18 39 Accrued employee benefits 982 1,182 Goodwill (1,693) (1,693) Other taxable differences (15) (26) Total deferred tax liability $ (3,239) $ (2,918)

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2021
Equity [Abstract]
Summary of Stockholders' Equity	Shares of common stock Issued Treasury Outstanding Balance at December 31, 2018 12,435,557 — 12,435,557 Issued 7,500 — 7,500 Balance at December 31, 2019 12,443,057 — 12,443,057 Issued 8,100 — 8,100 Balance at December 31, 2020 12,451,157 — 12,451,157 Issued 4,500 — 4,500 Acquired — (75,000) (75,000) Retired (75,000) 75,000 — Balance at December 31, 2021 12,380,657 — 12,380,657

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
Financial Instruments (Tables)	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Carrying Value and Estimated Fair Value of Financial Instruments	December 31, 2020 December 31, 2021 Carrying Fair Carrying Fair amount value amount value (In thousands) Cash and cash equivalents $ 70,637 $ 70,637 $ 76,579 $ 76,579 Accounts receivable, net 10,731 10,731 15,546 15,546 Accounts payable 2,632 2,632 3,408 3,408

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Significant Accounting Policies [Line Items]
Defined contribution plan expense	$ 3.7	$ 3	$ 3.2
Income tax payments to NL	$ 4.7	$ 3.2	$ 5
Minimum \| Building
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	15 years
Minimum \| Equipment and software
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	3 years
Maximum \| Building
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	40 years
Maximum \| Equipment and software
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	20 years
NL Industries \| CompX International Inc
Schedule Of Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	87.00%
Valhi Inc \| NL Industries
Schedule Of Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	83.00%
Contran Corporation \| Valhi Inc
Schedule Of Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	92.00%

Business and Geographic Segme_3

Business and Geographic Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021segment
Segment Reporting [Abstract]
Number of reportable operating segments	2

Business and Geographic Segme_4

Business and Geographic Segments - Schedule of Business Segment Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total net sales	$ 140,815	$ 114,537	$ 124,243
Total operating income (loss)	20,526	11,817	17,666
Interest income	1,197	1,680	3,270
Income before income taxes	21,723	13,497	20,936
Depreciation and amortization	3,839	3,827	3,684
Total capital expenditures	4,094	1,740	3,166
Operating Segments \| Security Products
Segment Reporting Information [Line Items]
Total net sales	105,124	87,863	99,328
Total operating income (loss)	21,622	14,926	21,013
Depreciation and amortization	2,890	3,069	3,056
Total capital expenditures	1,044	1,252	1,530
Operating Segments \| Marine Components
Segment Reporting Information [Line Items]
Total net sales	35,691	26,674	24,915
Total operating income (loss)	5,591	4,088	3,644
Depreciation and amortization	940	757	627
Total capital expenditures	3,050	458	1,636
Corporate
Segment Reporting Information [Line Items]
Total operating income (loss)	(6,687)	(7,197)	(6,991)
Depreciation and amortization	$ 9	1	$ 1
Total capital expenditures		$ 30

Business and Geographic Segme_5

Business and Geographic Segments - Business Segment Information by Geographical Areas (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 140,815	$ 114,537	$ 124,243
Total assets	192,452	184,045	178,544
Operating Segments \| Security Products
Segment Reporting Information [Line Items]
Net sales	105,124	87,863	99,328
Total assets	78,193	70,755	73,697
Operating Segments \| Marine Components
Segment Reporting Information [Line Items]
Net sales	35,691	26,674	24,915
Total assets	18,167	15,515	15,256
Corporate and eliminations
Segment Reporting Information [Line Items]
Total assets	96,092	97,775	89,591
Point Of Destination \| United States
Segment Reporting Information [Line Items]
Net sales	129,160	107,712	114,186
Point Of Destination \| Canada
Segment Reporting Information [Line Items]
Net sales	8,061	4,423	7,257
Point Of Destination \| Mexico
Segment Reporting Information [Line Items]
Net sales	589	431	922
Point Of Destination \| Other
Segment Reporting Information [Line Items]
Net sales	$ 3,005	$ 1,971	$ 1,878

Accounts Receivable, Net - Sche

Accounts Receivable, Net - Schedule of Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Allowance for doubtful accounts	$ (70)	$ (70)
Total accounts receivable, net	15,546	10,731
Security Products
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, gross	12,896	8,797
Marine Components
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, gross	$ 2,720	$ 2,004

Inventories, net - Inventories

Inventories, net - Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventories, net [Line Items]
Total raw materials	$ 5,042	$ 3,220
Total work-in-process	16,767	11,668
Total finished goods	3,833	3,449
Total inventories, net	25,642	18,337
Security Products
Inventories, net [Line Items]
Total raw materials	3,640	2,318
Total work-in-process	12,721	9,214
Total finished goods	2,271	2,235
Marine Components
Inventories, net [Line Items]
Total raw materials	1,402	902
Total work-in-process	4,046	2,454
Total finished goods	$ 1,562	$ 1,214

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
Goodwill - Additional Information (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill impairment charge	$ 0	$ 0	$ 0
Goodwill, gross	33,600,000
Goodwill	23,742,000	23,742,000
Increase (decrease) in carrying amount of goodwill	$ 0	$ 0	$ 0
Marine Components
Goodwill [Line Items]
Goodwill impairment charge				$ 9,900,000

Accounts Payable and Accrued _3

Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued liabilities:
Employee benefits	$ 9,797	$ 8,431
Customer tooling	516	393
Taxes other than on income	391	301
Insurance	208	172
Sales rebates	48	79
Other	356	190
Total accounts payable and accrued liabilities	14,724	12,198
Security Products
Accounts payable:
Accounts payable	2,594	1,859
Marine Components
Accounts payable:
Accounts payable	$ 814	$ 773

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
Foreign-derived intangible income benefit	$ (120)	$ (55)	$ (201)	$ (100)

Income Taxes - Components of Pr

Income Taxes - Components of Pre-tax Income and Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Provision for income taxes:
Currently payable	$ 5,476	$ 3,222	$ 4,849
Deferred income tax expense (benefit)	(321)	(48)	89
Provision for income taxes	5,155	3,174	4,938
Expected tax expense, at the U.S. federal statutory income tax rate of 21%	4,562	2,835	4,397
State income taxes	692	378	742
Foreign-derived intangible income benefit	(120)	(55)	(201)	$ (100)
Other, net	21	16
Provision for income taxes	$ 5,155	$ 3,174	$ 4,938

Income Taxes - Components of _2

Income Taxes - Components of Pre-tax Income and Provision for Income Taxes (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Liability (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Inventories	$ 531	$ 356
Property and equipment	(2,951)	(2,887)
Accrued liabilities and other deductible differences	39	18
Accrued employee benefits	1,182	982
Goodwill	(1,693)	(1,693)
Other taxable differences	(26)	(15)
Total deferred tax liability	$ (2,918)	$ (3,239)

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Stockholders' Equity (Detail) - shares	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class Of Stock [Line Items]
Common stock, shares issued, beginning balance		12,451,157	12,451,157	12,443,057	12,435,557
Common stock, shares outstanding, beginning balance		12,451,157	12,451,157	12,443,057	12,435,557
Issued			4,500	8,100	7,500
Acquired			(75,000)	0	0
Acquired, Outstanding			(75,000)
Retired, Issued			(75,000)
Retired			75,000
Common stock, shares issued, ending balance	12,380,657		12,380,657	12,451,157	12,443,057
Common stock, shares outstanding, ending balance	12,380,657		12,380,657	12,451,157	12,443,057
Class A Common Stock
Class Of Stock [Line Items]
Common stock, shares issued, beginning balance		12,451,157	12,451,157
Common stock, shares outstanding, beginning balance		12,380,657	12,380,657
Acquired, Outstanding	(25,000)	(50,000)	(75,000)
Common stock, shares issued, ending balance	12,451,157		12,451,157	12,451,157
Common stock, shares outstanding, ending balance	12,380,657		12,380,657	12,380,657

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued	12,380,657		12,380,657	12,451,157	12,443,057	12,435,557
Common stock, shares outstanding	12,380,657		12,380,657	12,451,157	12,443,057	12,435,557
Preferred stock, shares authorized	1,000		1,000	1,000
Treasury stock purchases			75,000	0	0
Purchase of common shares			75,000
Shares available for purchase	602,547		602,547
Common Stock Dividend declared by directors			$ 0.20	$ 0.10	$ 0.07
Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued	12,451,157		12,451,157	12,451,157
Common stock, shares outstanding	12,380,657		12,380,657	12,380,657
Common stock, shares authorized	20,000,000		20,000,000	20,000,000
Purchase of common shares	25,000	50,000	75,000
Purchase of common shares value			$ 1.3
Class A Common Stock \| 2013 Director Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for award	136,450		136,450
Class A Common Stock \| Non-Employee \| 2013 Director Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares authorized to be issued under the plan			200,000

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	11 Months Ended	12 Months Ended
	Nov. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Note receivable from affiliate		$ 18,700,000	$ 29,500,000
Contran Corporation \| Intercorporate Services Agreements Fees
Related Party Transaction [Line Items]
Related party transaction expense		3,400,000	3,400,000	$ 3,400,000
Tall Pines Insurance Company or EWI RE Inc
Related Party Transaction [Line Items]
Related party transaction expense	$ 2,300,000	2,900,000	2,800,000
Tall Pines Insurance Company or EWI RE Inc \| Policies Written by Tall Pines Insurance Company
Related Party Transaction [Line Items]
Related party transaction expense		900,000	700,000
Unsecured Revolving Demand Promissory \| Valhi Inc
Related Party Transaction [Line Items]
Maximum loan amount					$ 30,000,000
Interest rate on loans repayment					1.00%
Principal due on demand effective date					Dec. 31, 2023
Note receivable from affiliate		18,700,000	29,500,000
Interest income including unused commitment fees on our loan		$ 1,200,000	$ 1,500,000	$ 2,400,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - Customer Concentration Risk - Consolidated Sales - customer	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Ten Largest Customers
Concentration Risk [Line Items]
Number of customers accounted for sale	10
Sales Revenue, percentage	51.00%	48.00%	47.00%
Customer One \| Security Products
Concentration Risk [Line Items]
Number of customers accounted for sale	1
Sales Revenue, percentage	16.00%	17.00%	14.00%

Financial Instruments - Carryin

Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 76,579	$ 70,637
Accounts receivable, net	15,546	10,731
Accounts payable	3,408	2,632
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	76,579	70,637
Accounts receivable, net	15,546	10,731
Accounts payable	$ 3,408	$ 2,632