CompX International (CIX) 10-Q 2 May 23 2023 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	Apr. 26, 2023
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Mar. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-13905
Entity Registrant Name	COMPX INTERNATIONAL INC.
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Class A common stock
Trading Symbol	CIX
Security Exchange Name	NYSEAMER
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,307,157
Document Quarterly Report	true
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Central Index Key	0001049606

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 17,987	$ 26,748
Marketable securities	42,963	33,147
Accounts receivable, net	18,681	17,840
Inventories, net	30,235	31,290
Prepaid expenses and other	1,950	2,136
Total current assets	111,816	111,161
Other assets:
Note receivable from affiliate	12,200	13,200
Goodwill	23,742	23,742
Other noncurrent assets	816	590
Total other assets	36,758	37,532
Property and equipment:
Land	5,390	5,390
Buildings	23,181	23,181
Equipment	74,376	74,113
Construction in progress	399	722
Gross property and equipment	103,346	103,406
Less accumulated depreciation	75,432	74,712
Net property and equipment	27,914	28,694
Total assets	176,488	177,387
Current liabilities:
Accounts payable and accrued liabilities	11,035	15,618
Income taxes payable to affiliate	2,033	1,035
Total current liabilities	13,068	16,653
Noncurrent liabilities:
Deferred income taxes	1,967	2,230
Other	56	68
Total noncurrent liabilities	2,023	2,298
Stockholders' equity:
Additional paid-in capital	53,155	53,155
Retained earnings	108,166	105,175
Accumulated other comprehensive loss - unrealized loss on marketable securities	(47)	(17)
Total stockholders' equity	161,397	158,436
Total liabilities and stockholders' equity	176,488	177,387
Commitments and contingencies (Note 1)
Class A Common Stock
Stockholders' equity:
Common stock	$ 123	$ 123

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Net sales	$ 41,151	$ 42,050
Cost of sales	28,447	29,970
Gross margin	12,704	12,080
Selling, general and administrative expense	5,664	5,774
Operating income	7,040	6,306
Interest income	947	214
Income before income taxes	7,987	6,520
Provision for income taxes	1,919	1,536
Net income	6,068	4,984
Other comprehensive loss, marketable securities adjustment:
Unrealized net loss arising during year	(30)
Comprehensive income	6,038	4,984
Net income - basic	16,110	13,437
Net income - diluted	$ 16,110	$ 13,437
Net income per basic share	$ 0.49	$ 0.40
Net income per diluted share	$ 0.49	$ 0.40
Weighted average shares outstanding - basic	12,307	12,381
Weighted average shares outstanding - diluted	12,307	12,381

CONSOLIDATED STATEMENT OF STOCK

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock Class A Common Stock	Additional paid-in Capital	Retained Earnings	Accumulated other comprehensive loss	Total
Balance at Dec. 31, 2021	$ 124	$ 54,780	$ 118,184		$ 173,088
Net income			4,984		4,984
Cash dividends			(3,095)		(3,095)
Balance at Mar. 31, 2022	124	54,780	120,073		174,977
Balance at Dec. 31, 2022	123	53,155	105,175	$ (17)	158,436
Net income			6,068		6,068
Other comprehensive loss				(30)	(30)
Cash dividends			(3,077)		(3,077)
Balance at Mar. 31, 2023	$ 123	$ 53,155	$ 108,166	$ (47)	$ 161,397

CONSOLIDATED STATEMENT OF STO_2

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement Of Stockholders Equity [Abstract]
Cash dividends per share	$ 0.25	$ 0.25

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 6,068	$ 4,984
Depreciation and amortization	1,010	961
Deferred income taxes	(250)	(231)
Other, net	(336)	56
Change in assets and liabilities:
Accounts receivable, net	(842)	(2,213)
Inventories, net	1,012	(2,490)
Accounts payable and accrued liabilities	(4,543)	(3,055)
Accounts with affiliates	998	862
Prepaids and other, net	(52)	(1,036)
Net cash provided by operating activities	3,065	(2,162)
Cash flows from investing activities:
Capital expenditures	(270)	(1,717)
Proceeds from maturities	4,000
Purchases of marketable securities	(13,479)
Note receivable from affiliate:
Collections	7,800	7,700
Advances	(6,800)	(7,100)
Net cash provided by (used in) investing activities	(8,749)	(1,117)
Cash flows from financing activities:
Dividends paid	(3,077)	(3,095)
Cash and cash equivalents - net change from:
Operating, investing and financing activities	(8,761)	(6,374)
Balance at beginning of period	26,748	76,579
Balance at end of period	17,987	70,205
Supplemental disclosures -
Cash paid for income taxes	$ 1,171	$ 904

Organization and Basis of Prese

Organization and Basis of Presentation	3 Months Ended
	Mar. 31, 2023
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Basis of Presentation	COMPX INTERNATIONAL INC. NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS March 31, 2023 (unaudited) Note 1 – Organization and basis of presentation: Organization Basis of presentation. Our operations are reported on a 52 or 53-week year. For presentation purposes, annual and quarterly information in the Condensed Consolidated Financial Statements and accompanying notes are presented as ended March 31, 2022 December 31, 2022 and March 31, 2023. The actual dates of our annual and quarterly periods are April 3, 2022, January 1, 2023 and April 2, 2023, respectively. Unless otherwise indicated, references in this report to “we”, “us” or “our” refer to CompX International Inc. and its subsidiaries, taken as a whole.

Business and Geographic Segment

Business and Geographic Segments	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Business and Geographic Segments	Note 2 – Business segment information: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Net sales: ​ ​ ​ Security Products ​ $ 29,581 ​ $ 27,342 Marine Components ​ 12,469 ​ 13,809 Total net sales ​ $ 42,050 ​ $ 41,151 ​ ​ ​ ​ ​ ​ ​ Operating income: ​ ​ Security Products ​ $ 6,010 ​ $ 5,379 Marine Components ​ 2,009 ​ 3,317 Corporate operating expenses ​ (1,713) ​ (1,656) Total operating income ​ 6,306 ​ 7,040 Interest income ​ 214 ​ 947 Income before income taxes ​ $ 6,520 ​ $ 7,987 ​ Intersegment sales are not material.

Marketable Securities

Marketable Securities	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	Note 3 – Marketable Securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Unrealized ​ Market value cost basis loss, net ​ ​ (In thousands) December 31, 2022: ​ ​ ​ Current assets ​ $ 33,147 ​ $ 33,164 ​ $ (17) ​ ​ ​ ​ ​ ​ ​ March 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ Current assets ​ $ 42,963 ​ $ 43,023 ​ $ (60) ​ Our marketable securities are invested in U.S. government treasuries with original maturities ranging in length from 4 months to 12 months. The fair value of our marketable securities are determined using Level 2 inputs (because although these securities are traded, in many cases the market is not active and the period-end valuation is generally based on the last trade of the period, which may be several days prior to the end of the period).

Accounts Receivable, Net

Accounts Receivable, Net	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Accounts Receivable, Net	Note 4 – Accounts receivable, net: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Accounts receivable, net: ​ ​ Security Products ​ $ 13,767 ​ $ 13,241 Marine Components ​ 4,143 ​ 5,510 Allowance for doubtful accounts ​ (70) ​ (70) Total accounts receivable, net ​ $ 17,840 ​ $ 18,681 ​

Inventories, Net

Inventories, Net	3 Months Ended
	Mar. 31, 2023
Inventory Disclosure [Abstract]
Inventories, Net	​ ​ Note 5 – Inventories, net: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Raw materials: ​ ​ Security Products ​ $ 4,172 ​ $ 4,157 Marine Components ​ 2,073 ​ 1,857 Total raw materials ​ 6,245 ​ 6,014 Work-in-process: ​ ​ Security Products ​ 14,193 ​ 13,669 Marine Components ​ 5,790 ​ 5,668 Total work-in-process ​ 19,983 ​ 19,337 Finished goods: ​ ​ Security Products ​ 3,163 ​ 3,287 Marine Components ​ 1,899 ​ 1,597 Total finished goods ​ 5,062 ​ 4,884 Total inventories, net ​ $ 31,290 ​ $ 30,235 ​

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	3 Months Ended
	Mar. 31, 2023
Payables And Accruals [Abstract]
Accounts Payable and Accrued Liabilities	Note 6 – Accounts payable and accrued liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Accounts payable: ​ ​ Security Products ​ $ 2,663 ​ $ 2,662 Marine Components ​ 874 ​ 1,263 Accrued liabilities: ​ ​ Employee benefits ​ 10,489 ​ 5,208 Taxes other than on income ​ 279 ​ 449 Advances from customers ​ ​ 298 ​ ​ 256 Insurance ​ 255 ​ 235 Deferred revenue ​ ​ 243 ​ ​ 219 Customer tooling ​ 135 ​ 181 Other ​ 382 ​ 562 Total accounts payable and accrued liabilities ​ $ 15,618 ​ $ 11,035 ​

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 – Provision for income taxes: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Expected tax expense, at the U.S. federal statutory income tax rate of 21% ​ $ 1,369 ​ $ 1,677 State income taxes ​ 196 ​ 240 FDII benefit ​ (33) ​ (24) Other, net ​ 4 ​ 26 Total provision for income taxes ​ $ 1,536 ​ $ 1,919 ​ ​ ​ ​ ​ ​ ​ Comprehensive provision for income taxes allocable to: ​ ​ ​ ​ ​ ​ Net income ​ $ 1,536 ​ $ 1,919 Other comprehensive loss - marketable securities ​ ​ — ​ ​ (13) Total ​ ​ 1,536 ​ $ 1,906 ​

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Stockholders' Equity	Note 8 – Stockholders’ equity: Our board of directors has previously authorized the repurchase of our Class A common stock in open market transactions, including block purchases, or in privately-negotiated transactions at unspecified prices and over an unspecified period of time. We may repurchase our common stock from time to time as market conditions permit. The stock repurchase program does not include specific price targets or timetables and may be suspended at any time. Depending on market conditions, we may terminate the program prior to its completion. We use cash on hand to acquire the shares. Repurchased shares are added to our treasury and cancelled. We made no treasury purchases during the first quarter of 2022 or 2023. At March 31, 2023, 523,647 shares were available for purchase under prior repurchase authorizations.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Note 10 – Related party transactions: 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, and when we borrow from related parties, we are generally able to pay a lower rate of interest than we would pay if we had incurred third-party indebtedness. While certain of these loans to affiliates may be of a lesser credit quality than cash equivalent instruments otherwise available to us, we believe we have considered the credit risks in the terms of the applicable loans. In this regard, we have an unsecured revolving demand promissory note with Valhi under which, as amended, we agreed to loan Valhi up to $25 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, 2024. Loans made to Valhi at any time under the agreement are at our discretion. At March 31, 2023, the outstanding principal balance receivable from Valhi under the promissory note was $12.2 million. Interest income (including unused commitment fees) on our loan to Valhi was $.2 million and $.3 million for the three months ended March 31, 2022 and 2023, respectively.

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Financial Instruments	Note 9 – Financial instruments: See Note 3 for information on how we determine the fair value of our marketable securities. ​ The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2022 ​ March 31, 2023 ​ ​ Carrying ​ Fair ​ Carrying ​ Fair ​ amount value amount value ​ ​ (In thousands) Cash and cash equivalents ​ $ 26,748 ​ $ 26,748 ​ $ 17,987 ​ $ 17,987 Accounts receivable, net ​ 17,840 ​ 17,840 ​ 18,681 ​ 18,681 Accounts payable ​ 3,537 ​ 3,537 ​ 3,925 ​ 3,925 ​ Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value.

Organization and Basis of Pre_2

Organization and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2023
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	Organization
Basis of Presentation	Basis of presentation. Our operations are reported on a 52 or 53-week year. For presentation purposes, annual and quarterly information in the Condensed Consolidated Financial Statements and accompanying notes are presented as ended March 31, 2022 December 31, 2022 and March 31, 2023. The actual dates of our annual and quarterly periods are April 3, 2022, January 1, 2023 and April 2, 2023, respectively. Unless otherwise indicated, references in this report to “we”, “us” or “our” refer to CompX International Inc. and its subsidiaries, taken as a whole.

Business and Geographic Segme_2

Business and Geographic Segments (Tables)	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Schedule of Business Segment Information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Net sales: ​ ​ ​ Security Products ​ $ 29,581 ​ $ 27,342 Marine Components ​ 12,469 ​ 13,809 Total net sales ​ $ 42,050 ​ $ 41,151 ​ ​ ​ ​ ​ ​ ​ Operating income: ​ ​ Security Products ​ $ 6,010 ​ $ 5,379 Marine Components ​ 2,009 ​ 3,317 Corporate operating expenses ​ (1,713) ​ (1,656) Total operating income ​ 6,306 ​ 7,040 Interest income ​ 214 ​ 947 Income before income taxes ​ $ 6,520 ​ $ 7,987

Marketable Securities (Tables)

Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of marketable securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Unrealized ​ Market value cost basis loss, net ​ ​ (In thousands) December 31, 2022: ​ ​ ​ Current assets ​ $ 33,147 ​ $ 33,164 ​ $ (17) ​ ​ ​ ​ ​ ​ ​ March 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ Current assets ​ $ 42,963 ​ $ 43,023 ​ $ (60) ​

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Schedule of Accounts Receivable, Net	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Accounts receivable, net: ​ ​ Security Products ​ $ 13,767 ​ $ 13,241 Marine Components ​ 4,143 ​ 5,510 Allowance for doubtful accounts ​ (70) ​ (70) Total accounts receivable, net ​ $ 17,840 ​ $ 18,681

Inventories, Net (Tables)

Inventories, Net (Tables)	3 Months Ended
	Mar. 31, 2023
Inventory Disclosure [Abstract]
Inventories, Net	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Raw materials: ​ ​ Security Products ​ $ 4,172 ​ $ 4,157 Marine Components ​ 2,073 ​ 1,857 Total raw materials ​ 6,245 ​ 6,014 Work-in-process: ​ ​ Security Products ​ 14,193 ​ 13,669 Marine Components ​ 5,790 ​ 5,668 Total work-in-process ​ 19,983 ​ 19,337 Finished goods: ​ ​ Security Products ​ 3,163 ​ 3,287 Marine Components ​ 1,899 ​ 1,597 Total finished goods ​ 5,062 ​ 4,884 Total inventories, net ​ $ 31,290 ​ $ 30,235

Accounts Payable and Accrued _2

Accounts Payable and Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2023
Payables And Accruals [Abstract]
Accounts Payable and Accrued Liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Accounts payable: ​ ​ Security Products ​ $ 2,663 ​ $ 2,662 Marine Components ​ 874 ​ 1,263 Accrued liabilities: ​ ​ Employee benefits ​ 10,489 ​ 5,208 Taxes other than on income ​ 279 ​ 449 Advances from customers ​ ​ 298 ​ ​ 256 Insurance ​ 255 ​ 235 Deferred revenue ​ ​ 243 ​ ​ 219 Customer tooling ​ 135 ​ 181 Other ​ 382 ​ 562 Total accounts payable and accrued liabilities ​ $ 15,618 ​ $ 11,035

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Provision for Income Taxes	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ 2022 2023 ​ ​ (In thousands) Expected tax expense, at the U.S. federal statutory income tax rate of 21% ​ $ 1,369 ​ $ 1,677 State income taxes ​ 196 ​ 240 FDII benefit ​ (33) ​ (24) Other, net ​ 4 ​ 26 Total provision for income taxes ​ $ 1,536 ​ $ 1,919 ​ ​ ​ ​ ​ ​ ​ Comprehensive provision for income taxes allocable to: ​ ​ ​ ​ ​ ​ Net income ​ $ 1,536 ​ $ 1,919 Other comprehensive loss - marketable securities ​ ​ — ​ ​ (13) Total ​ ​ 1,536 ​ $ 1,906

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Carrying Value and Estimated Fair Value of Financial Instruments	See Note 3 for information on how we determine the fair value of our marketable securities. ​ The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2022 ​ March 31, 2023 ​ ​ Carrying ​ Fair ​ Carrying ​ Fair ​ amount value amount value ​ ​ (In thousands) Cash and cash equivalents ​ $ 26,748 ​ $ 26,748 ​ $ 17,987 ​ $ 17,987 Accounts receivable, net ​ 17,840 ​ 17,840 ​ 18,681 ​ 18,681 Accounts payable ​ 3,537 ​ 3,537 ​ 3,925 ​ 3,925 ​

Organization and Basis of Pre_3

Organization and Basis of Presentation - Additional Information (Detail)	Mar. 31, 2023
NL Industries | CompX International Inc
Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	87%
Valhi Inc | NL Industries
Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	83%
Contran Corporation | Valhi Inc
Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage of ownership held by parent company	92%

Business and Geographic Segme_3

Business and Geographic Segments - Schedule of Business Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net sales:
Total net sales	$ 41,151	$ 42,050
Operating income (loss):
Total operating income	7,040	6,306
Interest income	947	214
Income before income taxes	7,987	6,520
Depreciation and amortization	1,010	961
Total capital expenditures	270	1,717
Security Products
Net sales:
Total net sales	27,342	29,581
Operating income (loss):
Total operating income	5,379	6,010
Marine Components
Net sales:
Total net sales	13,809	12,469
Operating income (loss):
Total operating income	3,317	2,009
Corporate
Operating income (loss):
Total operating income	$ (1,656)	$ (1,713)

Marketable Securities (Details)

Marketable Securities (Details) - Current assets - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Marketable securities
Market value	$ 42,963	$ 33,147
Amortized cost basis	43,023	33,164
Unrealized loss, net	$ (60)	$ (17)

Accounts Receivable, Net - Sche

Accounts Receivable, Net - Schedule of Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Allowance for doubtful accounts	$ (70)	$ (70)
Total accounts receivable, net	18,681	17,840
Security Products
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, gross	13,241	13,767
Marine Components
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, gross	$ 5,510	$ 4,143

Inventories, Net - Inventories,

Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Inventory [Line Items]
Total raw materials	$ 6,014	$ 6,245
Total work-in-process	19,337	19,983
Total finished goods	4,884	5,062
Total inventories, net	30,235	31,290
Security Products
Inventory [Line Items]
Total raw materials	4,157	4,172
Total work-in-process	13,669	14,193
Total finished goods	3,287	3,163
Marine Components
Inventory [Line Items]
Total raw materials	1,857	2,073
Total work-in-process	5,668	5,790
Total finished goods	$ 1,597	$ 1,899

Accounts Payable and Accrued _3

Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accrued liabilities:
Employee benefits	$ 5,208	$ 10,489
Taxes other than on income	449	279
Customer tooling	181	135
Advances from customers	256	298
Insurance	235	255
Deferred revenue	219	243
Other	562	382
Total accounts payable and accrued liabilities	11,035	15,618
Security Products
Accounts payable:
Accounts payable	2,662	2,663
Marine Components
Accounts payable:
Accounts payable	$ 1,263	$ 874

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Provision for income taxes:
Deferred income tax benefit	$ (250)	$ (231)
Total provision for income taxes	1,919	1,536
Expected tax expense, at the U.S. federal statutory income tax rate of 21%	1,677	1,369
State income taxes	240	196
FDII benefit	(24)	(33)
Other, net	26	4
Total provision for income taxes	1,919	1,536
Disclosure Other Comprehensive Income Loss Tax Effects Allocation to Component Of Other Comprehensive Income Loss [Abstract]
Net income	1,919	1,536
Other comprehensive loss - marketable securities	(13)
Total	$ 1,906	$ 1,536

Income Taxes - Provision for _2

Income Taxes - Provision for Income Taxes (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21%	21%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail)	Mar. 31, 2023 shares
Share Based Arrangements To Obtain Goods And Services [Abstract]
Shares available for purchase	523,647

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Aug. 31, 2016	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Note receivable from affiliate		$ 12,200		$ 13,200
Unsecured Revolving Demand Promissory | Valhi Inc
Related Party Transaction [Line Items]
Maximum loan amount	$ 25,000
Interest rate on loans repayment	1%
Principal due on demand effective date	Dec. 31, 2024
Note receivable from affiliate		12,200
Interest income including unused commitment fees on our loan		$ 300	$ 200

Financial Instruments - Carryin

Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 17,987	$ 26,748
Accounts receivable, net	18,681	17,840
Accounts payable	3,925	3,537
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	17,987	26,748
Accounts receivable, net	18,681	17,840
Accounts payable	$ 3,925	$ 3,537