National Presto Industries (NPK) 10-K 16 Mar 21 2020 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 01, 2021	Jun. 28, 2020
Document Information [Line Items]
Entity Central Index Key	0000080172
Entity Registrant Name	NATIONAL PRESTO INDUSTRIES INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-2451
Entity Incorporation, State or Country Code	WI
Entity Tax Identification Number	39-0494170
Entity Address, Address Line One	3925 North Hastings Way
Entity Address, City or Town	Eau Claire
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	54703-3703
City Area Code	715
Local Phone Number	839-2121
Title of 12(b) Security	$1.00 par value common stock
Trading Symbol	NPK
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 421,281,573
Entity Common Stock, Shares Outstanding		7,025,943

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 86,036,000	$ 79,579,000
Marketable securities	68,981,000	78,733,000
Accounts receivable	53,979,000	41,914,000
Less allowance for doubtful accounts	312,000	450,000
Accounts receivable, net	53,667,000	41,464,000
Inventories:
Finished goods	31,440,000	33,495,000
Work in process	96,463,000	87,805,000
Raw materials and supplies	7,585,000	7,236,000
Total inventory	135,488,000	128,536,000
Notes receivable, current	2,869,000	2,853,000
Other current assets	10,199,000	6,668,000
Total current assets	357,240,000	337,833,000
PROPERTY, PLANT AND EQUIPMENT:
Land and land improvements	3,008,000	3,008,000
Buildings	48,706,000	47,748,000
Machinery and equipment	44,774,000	43,226,000
PROPERTY, PLANT AND EQUIPMENT	96,488,000	93,982,000
Less allowance for depreciation and amortization	59,375,000	56,704,000
PROPERTY, PLANT AND EQUIPMENT, NET	37,113,000	37,278,000
GOODWILL	15,317,000	15,317,000
INTANGIBLE ASSETS, net	2,838,000	3,059,000
NOTES RECEIVABLE	7,399,000	7,182,000
RIGHT-OF-USE LEASE ASSETS	3,363,000	3,521,000
DEFERRED INCOME TAXES	2,994,000	1,281,000
OTHER ASSETS	6,906,000	4,782,000
Assets, Total	433,170,000	410,253,000
CURRENT LIABILITIES:
Accounts payable	33,474,000	21,652,000
Federal and state income taxes	4,777,000	3,799,000
Lease liabilities	573,000	520,000
Accrued liabilities	16,268,000	13,324,000
Total current liabilities	55,092,000	39,295,000
LEASE LIABILITIES - NON-CURRENT	2,790,000	3,001,000
OTHER NON-CURRENT LIABILITIES	940,000	0
Total liabilities	58,822,000	42,296,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, $1 par value: Authorized: 12,000,000 shares at December 31, 2020 and 2019 Issued: 7,440,518 shares at December 31, 2020 and 2019 Outstanding: 7,025,433 and 7,006,323 shares at December 31, 2020 and 2019, respectively	7,441,000	7,441,000
Paid-in capital	12,438,000	11,447,000
Retained earnings	367,627,000	362,842,000
Accumulated other comprehensive income	154,000	136,000
Stockholders' Equity before Treasury Stock	387,660,000	381,866,000
Less treasury stock, at cost, 415,085 and 434,195 shares at December 31, 2020 and 2019, respectively	13,312,000	13,909,000
Total stockholders' equity	374,348,000	367,957,000
Liabilities and Equity, Total	$ 433,170,000	$ 410,253,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	12,000,000	12,000,000
Common stock, issued (in shares)	7,440,518	7,440,518
Common stock, outstanding (in shares)	7,025,433	7,006,323
Treasury stock, shares (in shares)	415,085	434,195

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 352,627,000	$ 308,510,000	$ 323,317,000
Cost of sales	267,705,000	236,585,000	247,434,000
Gross profit	84,922,000	71,925,000	75,883,000
Selling and general expenses	28,505,000	25,462,000	23,286,000
Intangibles amortization	221,000	83,000	2,167,000
Loss on divestiture, net	0	0	2,528,000
Operating profit	56,196,000	46,380,000	47,902,000
Other income	3,792,000	5,926,000	4,437,000
Earnings from continuing operations before provision for income taxes	59,988,000	52,306,000	52,339,000
Provision for income taxes from continuing operations	13,030,000	11,766,000	12,450,000
Earnings from continuing operations	46,958,000	40,540,000	39,889,000
Earnings from discontinued operations, net of tax	0	1,680,000	51,000
Net earnings	$ 46,958,000	$ 42,220,000	$ 39,940,000
Weighted average common shares outstanding:
Basic and diluted (in shares)	7,038	7,018	7,005
Earnings per share, basic and diluted:
From continuing operations (in dollars per share)	$ 6.67	$ 5.78	$ 5.69
From discontinued operations (in dollars per share)	0	0.24	0.01
Net earnings per share (in dollars per share)	$ 6.67	$ 6.02	$ 5.70
Comprehensive income:
Net earnings	$ 46,958,000	$ 42,220,000	$ 39,940,000
Other comprehensive income, net of tax:
Unrealized gain on available-for-sale securities	18,000	115,000	107,000
Comprehensive income	$ 46,976,000	$ 42,335,000	$ 40,047,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net earnings	$ 46,958,000	$ 42,220,000	$ 39,940,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Provision for depreciation	2,784,000	3,606,000	4,052,000
Intangibles amortization	221,000	83,000	2,167,000
Deferred income tax (benefit)	(1,718,000)	(224,000)	(121,000)
Noncash income tax expense	0	1,370,000	0
Net loss and impairment on divestiture of businesses	0	0	2,528,000
Loss on disposal of property, plant and equipment	2,000	322,000	163,000
Provision for doubtful accounts	0	7,000	458,000
Noncash retirement plan expense	721,000	680,000	698,000
Gain on legal settlement	0	(2,300,000)	0
Other	131,000	464,000	229,000
Changes in operating accounts, net of effects of acquisition:
Accounts receivable, net	(12,203,000)	10,915,000	11,546,000
Inventories	(6,952,000)	(34,241,000)	6,821,000
Other assets and current assets	(5,655,000)	(2,803,000)	4,067,000
Accounts payable and accrued liabilities	15,706,000	(11,561,000)	6,066,000
Federal and state income taxes receivable/payable	978,000	1,045,000	(2,366,000)
Net cash provided by operating activities	40,973,000	9,583,000	76,248,000
Cash flows from investing activities:
Marketable securities purchased	(48,047,000)	(105,409,000)	(163,271,000)
Marketable securities - maturities and sales	57,823,000	161,420,000	173,060,000
Proceeds from divestiture of businesses, net of cash paid	0	0	9,410,000
Purchase of property, plant and equipment	(2,621,000)	(3,138,000)	(8,686,000)
Notes issued	0	0	(2,300,000)
Proceeds from notes receivable	0	2,146,000	0
Acquisition of business, net of cash acquired	0	(3,733,000)	0
Proceeds from legal settlement	0	2,300,000	0
Proceeds from insurance settlement	0	807,000	2,630,000
Sale of property, plant and equipment	0	767,000	1,000
Net cash provided by investing activities	7,155,000	55,160,000	10,844,000
Cash flows from financing activities:
Dividends paid	(42,172,000)	(42,087,000)	(41,989,000)
Proceeds from sale of treasury stock	528,000	518,000	528,000
Other	(27,000)	(442,000)	(6,000)
Net cash used in financing activities	(41,671,000)	(42,011,000)	(41,467,000)
Net increase in cash and cash equivalents	6,457,000	22,732,000	45,625,000
Cash and cash equivalents at beginning of year	79,579,000	56,847,000	11,222,000
Cash and cash equivalents at end of year	86,036,000	79,579,000	56,847,000
Supplemental disclosures of cash flow information:
Income taxes	$ 13,803,000	$ 10,187,000	$ 14,968,000

Consolidated Statements Of Stoc

Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2017	6,968,000
Balance at Dec. 31, 2017	$ 7,441	$ 9,074	$ 364,757	$ (86)	$ (14,810)	$ 366,376
Net earnings			39,940			39,940
Unrealized gain on available-for-sale securities, net of tax				107		107
Dividends paid			(41,989)			(41,989)
Other (in shares)	13,000
Other		1,286	1		402	1,689
Balance (in shares) at Dec. 31, 2018	6,981,000
Balance at Dec. 31, 2018	$ 7,441	10,360	362,709	21	(14,408)	366,123
Net earnings			42,220			42,220
Unrealized gain on available-for-sale securities, net of tax				115		115
Dividends paid			(42,087)			(42,087)
Other (in shares)	25,000
Other		1,087			499	$ 1,586
Balance (in shares) at Dec. 31, 2019	7,006,000					7,006,323
Balance at Dec. 31, 2019	$ 7,441	11,447	362,842	136	(13,909)	$ 367,957
Net earnings			46,958			46,958
Unrealized gain on available-for-sale securities, net of tax				18		18
Dividends paid			(42,172)			(42,172)
Other (in shares)	19,000
Other		991	(1)		597	$ 1,587
Balance (in shares) at Dec. 31, 2020	7,025,000					7,025,433
Balance at Dec. 31, 2020	$ 7,441	$ 12,438	$ 367,627	$ 154	$ (13,312)	$ 374,348

Consolidated Statements Of St_2

Consolidated Statements Of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Regular dividends per share (in dollars per share)	$ 1	$ 1	$ 1
Extra dividends per share (in dollars per share)	$ 5	$ 5	$ 5

Note A - Summary of Significant

Note A - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Significant Accounting Policies [Text Block]	A. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:  ( 1  ( 2  On January 3, 2017,  ( 3 19 19 no 19 2021 In response to the government mandated COVID- 19 March 27, 2020. not December 31, 2020. May 1, 2020, ( 4 820, Fair Value Measurements and Disclosures 820 three 1, 2, 3, no  The carrying amount for cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities approximates fair value due to the immediate or short-term maturity of these financial instruments. The fair value of marketable securities are discussed in Note A( 5  ( 5  Cash and Cash Equivalents: three may 1, 820  The Company's cash management policy provides for its bank disbursement accounts to be reimbursed on a daily basis. Checks issued but not December 31, 2020 2019  Marketable Securities: three  At December 31, 2020 2019 December 31 2, 820, not  (In thousands) MARKETABLE SECURITIES Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses December 31, 2020 Tax-exempt Municipal Bonds $ 42,817 $ 43,013 $ 196 $ - Variable Rate Demand Notes 25,968 25,968 - - Total Marketable Securities $ 68,785 $ 68,981 $ 196 $ - December 31, 2019 Tax-exempt Municipal Bonds $ 39,313 $ 39,484 $ 176 $ 5 Variable Rate Demand Notes 39,249 39,249 - - Total Marketable Securities $ 78,562 $ 78,733 $ 176 $ 5  Proceeds from sales and maturities of marketable securities totaled $57,823,000 in 2020 2019 2018 December 31, 2020, 2019 2018 December 31, 2020 2019 2018  The contractual maturities of the marketable securities held at December 31, 2020 one one five five ten ten five seven not  ( 6 not may  ( 7 first first first  ( 8 may not one 2018, third 2018. December 31, 2020, December 31, 2020 2021. December 31, 2019  ( 9 fourth not 2020 2019 2018  The Company's goodwill as of December 31, 2020 2019  ( 10  Intangible assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not one 2018, third 2018. 2020 2019  The gross carrying amounts of the intangible assets subject to amortization was $2,142,000 at December 31, 2020 December 31, 2020 2019 December 31, 2020 2019 2018 December 31, 2020 five  ( 11 two December 31, 2020 2019 December 31, 2020 2019 twelve  ( 12 606, Revenue from Contracts with Customers January 1, 2018 not one  The Company's contracts in the Defense segment are primarily with the U.S. Department of Defense (DOD) and DOD prime contractors. As a consequence, this segment's business essentially depends on the product needs and governmental funding of the DOD. Substantially all of the work performed by the Defense segment directly or indirectly for the DOD is performed on a fixed-price basis. Under fixed-price contracts, the price paid to the contractor is awarded based on competition at the outset of the contract and therefore, with the exception of limited escalation provisions on specific materials, is generally not  For the Housewares/Small Appliance segment, revenue is generally recognized as the completed, ordered product is shipped to the customer from the Company’s warehouses. For the relatively few situations in which revenue should be recognized when product is received by the customer, the Company adjusts revenue accordingly. For the year ended December 31, 2020, may 2019, may one four not no  The timing of revenue recognition, billings, and cash collections results in billed accounts receivable, and customer advances and deposits (contract liabilities) on the Company’s Condensed Consolidated Balance Sheets. For the Defense segment, the Company occasionally receives advances or deposits from certain customers before revenue is recognized, resulting in contract liabilities. These advances or deposits do not December 31, 2020 2019 2020, 2019, 2018, 2020 2019, no no December 31, 2020 2019 one  The Company’s principal sources of revenue are derived from two  ( 13 2020, 2019, 2018  ( 14  The product warranty liability is included in accounts payable on the balance sheet. The following table shows the changes in product warranty liability for the period:  (In thousands) Year Ended December 31 2020 2019 Beginning balance January 1 $ 263 $ 221 Accruals during the period 303 416 Charges / payments made under the warranties (325 ) (374 ) Balance December 31 $ 241 $ 263  Included in accounts payable as of December 31, 2020 ( 15 718, Compensation — Stock Compensation 718,  ( 16 740, Income Taxes  ( 17 In December 2019, No. 2019 12, Simplifying the Accounting for Income Taxes 740, Income Taxes December 15, 2020. 2019 12 not  In June 2016, No. 2016 13, Financial Instruments—Credit Losses (Topic 326 2016 13 2016 13 January 1, 2020 2016 13 not   Other pronouncements issued but not December 31, 2020 not 

Note B - Inventories

Note B - Inventories	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	B. INVENTORIES: The amount of inventories valued on the LIFO basis was $30,515,000 and $32,744,000 as of December 31, 2020 2019 first first December 31, 2020 2019 December 31, 2020 2019 2018  The following table describes that which would have occurred if LIFO inventories had been valued at current cost determined on a FIFO basis:  Increase (Decrease) – (In thousands, except per share data) Year Cost of Sales Net Earnings Earnings Per Share 2020 $ (447 ) $ 349 $ 0.05 2019 $ 42 $ (34 ) $ - 2018 $ (189 ) $ 143 $ 0.02  This information is provided for comparison with companies using the FIFO basis.  Inventory for Defense and raw materials of the Housewares/Small Appliance segments are valued under the FIFO method and total $104,973,000 and $95,792,000 at December 31, 2020 2019 December 31, 2020 December 31, 2019 

Note C - Accrued Liabilities

Note C - Accrued Liabilities	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	C. ACCRUED LIABILITIES: At December 31, 2020 December 31, 2019  The Company is self-insured for health care costs, although it does carry stop loss and other insurance to cover health care claims once they reach a specified threshold. The Company is also subject to product liability claims in the normal course of business. It is partly self-insured for product liability claims, and therefore records an accrual for known claims and estimated incurred but unreported claims in the Company’s Consolidated Financial Statements. The Company utilizes historical trends and other analysis to assist in determining the appropriate accrual. An increase in the number or magnitude of claims could have a material impact on the Company’s financial condition and results of operations. The Company's policy is to accrue for legal fees expected to be incurred in connection with loss contingencies. See Note K for a discussion of environmental remediation liabilities. 

Note D - Treasury Stock

Note D - Treasury Stock	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Treasury Stock [Text Block]	D. TREASURY STOCK: As of December 31, 2020 2020, 2019, 2018 401 

Note E - Net Earnings Per Share

Note E - Net Earnings Per Share	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	E. NET EARNINGS PER SHARE: Basic earnings per share is based on the weighted average number of common shares and participating securities outstanding during the period. Diluted earnings per share also includes the dilutive effect of additional potential common shares issuable. Unvested stock awards, which contain non-forfeitable rights to dividends, whether paid or unpaid (“participating securities”), are included in the number of shares outstanding for both basic and diluted earnings per share calculations. 

Note F - Stock-based Compensati

Note F - Stock-based Compensation	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	F. STOCK-BASED COMPENSATION: The Company, from time to time, enters into separate non-vested share-based payment arrangements with employees and executive officers under the Incentive Compensation Plan approved by stockholders on May 18, 2010 2017 May 16, 2017, 2017 2010 2010  During 2020, 2019, 2018 2021 2026,  The Company recognized pre-tax compensation expense in the Consolidated Statements of Comprehensive Income related to stock-based compensation of $366,000, $830,000, and $469,000 in 2020, 2019, 2018 December 31, 2020 2020, 2019, 2018  The following table summarizes the activity for non-vested restricted stock:  2020 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Non-vested at beginning of period 18,604 $ 93.23 32,337 $ 87.84 29,810 $ 83.40 Granted 7,310 89.84 4,138 98.54 3,886 116.49 Vested (3,193 ) 59.94 (17,871 ) 84.71 (1,359 ) 72.25 Forfeited 0 - 0 - 0 - Non-vested at end of period 22,721 $ 96.82 18,604 $ 93.23 32,337 $ 87.84 

Note G - 401(k) Plan

Note G - 401(k) Plan	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Retirement Benefits [Text Block]	G. 401 The Company sponsors a 401 first 2004, first 2020 2019 2018 2020 2019 2018 401 401 December 31, 2020 2019 2018 

Note H - Income Taxes

Note H - Income Taxes	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	H. INCOME TAXES: The following table summarizes the provision for income taxes from continuing operations: For Years Ended December 31 (in thousands) 2020 2019 2018 Current: Federal $ 12,932 $ 11,453 $ 10,996 State 1,816 537 1,575 14,748 11,990 12,571 Deferred: Federal (1,210 ) (179 ) (280 ) State (508 ) (45 ) 159 (1,718 ) (224 ) (121 ) Total tax provision $ 13,030 $ 11,766 $ 12,450  The effective rate of the provision for income taxes on earnings from continuing operations before income taxes as shown in the Consolidated Statements of Comprehensive Income differs from the applicable statutory federal income tax rate for the following reasons:  Percent of Pre-tax Income 2020 2019 2018 Statutory rate 21.0 % 21.0 % 21.0 % State tax, net of federal benefit 1.7 % 0.7 % 2.6 % Tax exempt interest and dividends (0.1 %) (0.1 %) (0.6 %) Other (0.9 %) 0.9 % 0.8 % Effective rate 21.7 % 22.5 % 23.8 %  Deferred tax assets and liabilities are recorded based on the differences between the tax basis of assets and liabilities and their carrying amounts for financial reporting purposes. The tax effects of the cumulative temporary differences resulting in deferred tax assets and liabilities are as follows at December 31: (In thousands) 2020 2019 Deferred tax assets Insurance (primarily product liability) $ 978 $ 947 Vacation 813 662 Inventory 754 642 State NOL and tax credit carryforwards 825 - Product recall 610 - Deferred payroll taxes 414 - Deferred compensation 203 162 Environmental 214 227 Other 330 200 Subtotal 5,141 2,840 Less: valuation allowance (520) - Total deferred tax assets 4,621 2,840 Deferred tax liabilities Goodwill and other intangibles 1,585 1,391 Depreciation 1 131 Deferred revenue 41 37 Total deferred tax liabilities 1,627 1,559 Net deferred tax assets $ 2,994 $ 1,281  Management assesses the available positive and negative evidence to estimate whether sufficient future taxable income will be generated to permit use of the existing deferred tax assets. The Company believes it is more likely than not not three December 31, 2020. On the basis of this evaluation, as of December 31, 2020, 2034 2040. no The Company establishes tax reserves in accordance with FASB ASC 740, Income Taxes December 31, 2020  The following is a reconciliation of the Company’s unrecognized tax benefits for the years ended December 31, 2020 2019  (In thousands) 2020 2019 Balance at January 1 $ 2,237 $ 320 Increases for tax positions taken related to the current year 944 453 Increases for tax positions taken related to prior years 46 1,519 Decreases for tax positions taken related to prior years - - Lapse of statute of limitations (706 ) (55 ) Settlements - - Balance at December 31 $ 2,521 $ 2,237  It is the Company’s practice to include tax related interest expense, interest income, and penalties in tax expense. During the years ended December 31, 2020, 2019 2018  The Company is subject to U.S. federal income tax as well as income taxes of multiple states. Tax years 2017 2019 2018, 2013 2016. June 2016, 2012 2013. 

Note I - Commitments and Contin

Note I - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	I. COMMITMENTS AND CONTINGENCIES: The Company is involved in largely routine litigation incidental to its business. Management believes the ultimate outcome of this litigation will not In the state of Mississippi, inventory that is shipped out of state that is held in a licensed Free Port Warehouse is exempt from personal property taxes. One of the Company's subsidiaries operates in Hinds County, Mississippi. That subsidiary has submitted its Hinds County Free Port Warehouse tax filing for nearly 40 June 2020, no seven not ASC450 Contingencies December 31, 2020. 

Note J - Concentrations

Note J - Concentrations	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	J. CONCENTRATIONS: In the Housewares/Small Appliance segment, two December 31, 2020, one December 31 2019 2018  The Company sources most of its housewares/small appliances and certain safety products from vendors in the Orient and, as a result, risks deliveries from the Orient being disrupted by labor or supply problems at the vendors, or transportation delays. Should such problems or delays materialize, products might not no  The Company's Defense segment manufactures products primarily for the U.S. Department of Defense (DOD) and DOD prime contractors. As a consequence, this segment's future business essentially depends on the product needs and governmental funding of the DOD. During 2020, 2019, 2018 not 40mm third not December 31, 2020 February 28, 2025. 

Note K - Environmental

Note K - Environmental	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Environmental Loss Contingency Disclosure [Text Block]	K. ENVIRONMENTAL In May 1986, 1980 December 31, 1998, may 1960s 1970s. December 31, 2020 not  Based on factors known as of December 31, 2020 not December 31, 2020 2019  Expected future payments for environmental matters are as follows:  (In thousands) Years Ending December 31: 2021 $ 180 2022 143 2023 130 2024 118 2025 106 Thereafter 293 $ 970 

Note L - Business Segments

Note L - Business Segments	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	L. BUSINESS SEGMENTS: The Company operates in three January 3, 2017,  The Housewares/Small Appliance segment designs, markets, and distributes housewares and small appliances. The housewares/small appliance products are sold primarily in the United States and Canada directly to retail outlets and also through independent distributors. As more fully described in Note J, the Company primarily sources its Housewares/Small Appliance products from non-affiliated suppliers located in the Orient. Sales are seasonal, with the normal peak sales period occurring in the fourth  The Defense segment was started in 2001 2005, 2010, one two 40mm five 2016, one 2017, third five 2001, 2003, 2006, 20 50mm 2011 October 2018, 2014,  On July 23, 2019, 2014. (in thousands) Housewares / Small Appliance Defense Safety Assets Held for Sale Total Year ended December 31, 2020 External net sales $ 117,645 $ 234,645 337 $ 352,627 Gross profit (loss) 24,206 62,561 (1,845 ) 84,922 Operating profit (loss) 10,371 52,810 (6,985 ) 56,196 Total assets 245,662 164,951 22,557 $ - 433,170 Depreciation and amortization 983 1,743 279 3,005 Capital expenditures 828 1,678 115 2,621 Year ended December 31, 2019 External net sales $ 99,401 $ 209,114 (5 ) $ 308,510 Gross profit (loss) 15,358 57,773 (1,206 ) 71,925 Operating profit (loss) 2,522 47,845 (3,987 ) 46,380 Total assets 241,992 148,476 19,785 $ - 410,253 Depreciation and amortization 1,250 2,138 301 3,689 Capital expenditures 804 2,155 179 3,138 Year ended December 31, 2018 External net sales $ 93,733 $ 229,546 38 $ 323,317 Gross profit (loss) 15,563 60,979 (659 ) 75,883 Operating profit (loss) 4,479 44,911 (1,488 ) 47,902 Total assets 268,007 132,636 12,600 $ 375 413,618 Depreciation and amortization 1,161 4,835 223 6,219 Capital expenditures 7,974 676 36 8,686 In the above summary, operating profit represents earnings before other income, income taxes, and discontinued operations. The Company's segments operate discretely from each other with no 

Note M - Leases

Note M - Leases	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	M. LEASES The Company accounts for leases under ASC Topic 842, January 1, 2019. $3,832,000. one  The Company’s leases as lessee in its Defense segment provide for variable lease payments that are based on changes in the Consumer Price Index. As lessor, the Company’s primary lease also provides for variable lease payments that are also based on changes in the Consumer Price Index, as well as on increases in costs of insurance, real estate taxes, and utilities related to the leased space. Generally, all of the Company’s lease contracts provide for options to extend and terminate them. The majority of lease terms of the Company’s lease contracts reflect extension options, while none  The Company has determined that the rates implicit in its leases are not Topic 842  Year Ended Year Ended Summary of Lease Cost (in thousands) December 31, 2020 December 31, 2019 Operating lease cost $ 729 $ 691 Short-term and variable lease cost 452 225 Total lease cost $ 1,181 $ 916  Rent expense was approximately $1,182,000, $1,114,000, and $1,050,000 for the years ended December 31, 2020 2019 2018 December 31, 2020 2019, December 31, 2020 Maturities of operating lease liabilities are as follows:  Years ending December 31: (In thousands) 2021 $ 741 2022 745 2023 599 2024 497 2025 426 Thereafter 1,069 Total lease payments $ 4,077 Less: future interest expense 714 Lease liabilities $ 3,363 Lease income from operating lease payments was $1,967,000 and $1,788,000 for the years ended December 31, 2020 2019,  Years ending December 31: (In thousands) 2021 $ 1,843 2022 1,837 2023 1,837 2024 1,837 2025 1,837 Thereafter 12,859 Total lease payments $ 22,050  The Company considers risk associated with the residual value of its leased real property to be low, given the nature of the long-term lease agreement, the Company’s ability to control the maintenance of the property, and the creditworthiness of the lessee. The residual value risk is further mitigated by the long-lived nature of the property, and the propensity of such assets to hold their value or, in some cases, appreciate in value. 

Note N - Interim Financial Info

Note N - Interim Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Quarterly Financial Information [Text Block]	N. INTERIM FINANCIAL INFORMATION (UNAUDITED):  The following represents quarterly unaudited financial information for 2020 2019  (In thousands, except per share data) Per Share (basic and diluted) Quarter Net Sales Gross Profit Earnings from Continuing Operations Earnings from Discontinued Operations, net of tax Net Earnings Earnings from Continuing Operations Earnings from Discontinued Operations, net of tax Net Earnings 2020 First $ 65,636 $ 16,117 $ 8,222 $ - $ 8,222 $ 1.17 $ - $ 1.17 Second 87,132 21,743 12,657 - 12,657 1.80 - 1.80 Third 93,937 20,718 12,138 - 12,138 1.72 - 1.72 Fourth 105,922 26,344 13,941 - 13,941 1.98 - 1.98 Total $ 352,627 $ 84,922 $ 46,958 $ - $ 46,958 $ 6.67 $ - $ 6.67 2019 First $ 63,850 $ 12,492 $ 5,951 $ - $ 5,951 $ 0.85 $ - $ 0.85 Second 71,745 14,676 8,153 3 8,156 1.16 - 1.16 Third 78,006 23,847 14,712 1,677 16,389 2.09 0.24 2.33 Fourth 94,909 20,910 11,724 - 11,724 1.68 - 1.68 Total $ 308,510 $ 71,925 $ 40,540 $ 1,680 $ 42,220 $ 5.78 $ 0.24 $ 6.02  Fourth quarter sales are significantly impacted by the holiday driven seasonality of the Housewares/Small Appliance segment. This segment typically orders/purchases inventory during the first three fourth third 2019. may third 2019 

Note O - Line of Credit and Com

Note O - Line of Credit and Commercial Letters of Credit	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Short-term Debt [Text Block]	O. LINE OF CREDIT AND COMMERCIAL LETTERS OF CREDIT The Company maintains an unsecured line of credit for short term operating cash needs of $5,000,000 as of December 31, 2020 no September 30, 2021. one one December 31, 2020 2019 December 31, 2020 not 

Note P - Discontinued Operation

Note P - Discontinued Operations	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	P. DISCONTINUED OPERATIONS On January 3, 2017,  The following table summarizes the results of the Absorbent Products business within discontinued operations for each of the periods presented:  For the years ended December 31, (in thousands) 2020 2019 2018 Net sales $ - $ - $ - Cost of sales - - 65 Other income (expense) - 2,126 - Earnings from discontinued operations before provision for income taxes - 2,126 65 Provision for income taxes from discontinued operations - 446 14 Earnings from discontinued operations, net of tax $ - $ 1,680 $ 51  During the third 2019,   The Consolidated Statements of Cash Flows do not December 31, 2020 2019 2018 December 31, 2020 2019 2018  In connection with the asset purchase agreement discussed above, the Company entered into a 10-year lease agreement with Drylock for a portion of its manufacturing and warehouse facilities. The lease agreement provided for total annual payments of $1,288,000 initially. During the fourth 2018, three five ten 

Note Q - Divestiture

Note Q - Divestiture	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Divestiture [Text Block]	Q. DIVESTITURE On October 17, 2018, third September 30, 2018 2018 December 31, 2020 2019  The Company determined this transaction did not not 

Note R - Business Acquisition

Note R - Business Acquisition	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Business Combination Disclosure [Text Block]	R. BUSINESS ACQUISITION On July 23, 2019, 2014 seven seven  The acquisition was accounted for under the acquisition method of accounting with the Company treated as the acquiring entity. Accordingly, the consideration paid by the Company to complete the acquisition has been recorded to the assets acquired and liabilities assumed based upon their estimated fair values as of the date of acquisition. The carrying values for current assets and liabilities were deemed to approximate their fair values due to the short-term nature of these assets and liabilities. The following table shows the amounts recorded as of their acquisition date.  (in thousands) Cash $ 287 Receivables 14 Inventory 307 Other current assets 105 Property, plant and equipment 35 Intangibles 2,141 Goodwill 3,831 Right-of-Use Lease Assets 59 Total assets acquired 6,779 Less: Current liabilities assumed 255 Lease Liability - Noncurrent 23 Net assets acquired $ 6,501  The acquired intangibles primarily include technology software and patents that will be amortized over a period of 10-15 years. The amount of goodwill recorded reflects expected earning potential of the acquired technology software and patents. The recorded goodwill is deductible for income tax purposes over a fifteen 2019 December 31, 2019. January 1, 2018.  (unaudited) (in thousands, except per share data) Year Ended December 31, 2019 December 31, 2018 Net sales $ 308,561 $ 323,424 Net earnings 40,822 38,391 Net earnings per share (basic and diluted) $ 5.82 $ 5.48 Weighted average shares outstanding (basic and diluted) 7,018 7,005  The unaudited pro forma financial information presented above is not not one not not 

Note S - Other

Note S - Other	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Other Disclosure [Text Block]	S. OTHER The Company has entered into a licensing agreement with another firm that holds intellectual property on the Rusoh® self-service/self-reloadable fire extinguisher. Under the agreement, the Company has advanced the entity funds and has agreed to pay royalties to the entity on the commercial sales of the developed products. As of December 31, 2020 2019 2017, 

Note T - Subsequent Events

Note T - Subsequent Events	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	The Company evaluates events that occur through the filing date and discloses any material events or transactions.  On February 19, 2021, March 12, 2021, March 1, 2021. On March 12, 2021, five 2021 five 40mm May 22, 2020 M918 M385A1 

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	 SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS  For the Years Ended December 31, 2020, 2019 2018  (In thousands) Column A Column B Column C Column C Column D Column E Description Balance at Beginning of Period Additions - Charged to Costs and Expenses (A) Additions - Charged to Other Accounts (B) Deductions (C) Balance at End of Period Deducted from assets: Allowance for doubtful accounts: Year ended December 31, 2020 $ 450 $ - $ - $ 138 $ 312 Year ended December 31, 2019 $ 747 $ 6 $ - $ 303 $ 450 Year ended December 31, 2018 $ 1,869 $ 458 $ (1,422 ) $ 158 $ 747 Valuation allowance for deferred tax assets: Year ended December 31, 2020 $ - $ 520 $ - $ - $ 520  Notes: (A) Amounts charged to selling and general expenses for allowance for doubtful accounts and provision for income taxes from continuing operations for valuation allowance for deferred tax assets. (B) Amounts charged to other accounts. Charged to the loss on divestiture of AMTEC Less Lethal Systems, Inc. (see Note Q to the Consolidated Financial Statements. (C) Principally bad debts written off, net of recoveries.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Use of Estimates, Policy [Policy Text Block]	( 1 
Consolidation, Policy [Policy Text Block]	( 2  On January 3, 2017, 
COVID-19 [Policy Text Block]	( 3 19 19 no 19 2021 In response to the government mandated COVID- 19 March 27, 2020. not December 31, 2020. May 1, 2020,
Fair Value of Financial Instruments, Policy [Policy Text Block]	( 4 820, Fair Value Measurements and Disclosures 820 three 1, 2, 3, no  The carrying amount for cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities approximates fair value due to the immediate or short-term maturity of these financial instruments. The fair value of marketable securities are discussed in Note A( 5 
Cash, Cash Equivalents and Marketable Securities [Policy Text Block]	( 5  Cash and Cash Equivalents: three may 1, 820  The Company's cash management policy provides for its bank disbursement accounts to be reimbursed on a daily basis. Checks issued but not December 31, 2020 2019  Marketable Securities: three  At December 31, 2020 2019 December 31 2, 820, not  (In thousands) MARKETABLE SECURITIES Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses December 31, 2020 Tax-exempt Municipal Bonds $ 42,817 $ 43,013 $ 196 $ - Variable Rate Demand Notes 25,968 25,968 - - Total Marketable Securities $ 68,785 $ 68,981 $ 196 $ - December 31, 2019 Tax-exempt Municipal Bonds $ 39,313 $ 39,484 $ 176 $ 5 Variable Rate Demand Notes 39,249 39,249 - - Total Marketable Securities $ 78,562 $ 78,733 $ 176 $ 5  Proceeds from sales and maturities of marketable securities totaled $57,823,000 in 2020 2019 2018 December 31, 2020, 2019 2018 December 31, 2020 2019 2018  The contractual maturities of the marketable securities held at December 31, 2020 one one five five ten ten five seven not 
Receivable [Policy Text Block]	( 6 not may 
Inventory, Policy [Policy Text Block]	( 7 first first first 
Property, Plant and Equipment, Policy [Policy Text Block]	( 8 may not one 2018, third 2018. December 31, 2020, December 31, 2020 2021. December 31, 2019 
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	( 9 fourth not 2020 2019 2018  The Company's goodwill as of December 31, 2020 2019 
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	( 10  Intangible assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not one 2018, third 2018. 2020 2019  The gross carrying amounts of the intangible assets subject to amortization was $2,142,000 at December 31, 2020 December 31, 2020 2019 December 31, 2020 2019 2018 December 31, 2020 five 
Other Assets [Policy Text Block]	( 11 two December 31, 2020 2019 December 31, 2020 2019 twelve 
Revenue from Contract with Customer [Policy Text Block]	( 12 606, Revenue from Contracts with Customers January 1, 2018 not one  The Company's contracts in the Defense segment are primarily with the U.S. Department of Defense (DOD) and DOD prime contractors. As a consequence, this segment's business essentially depends on the product needs and governmental funding of the DOD. Substantially all of the work performed by the Defense segment directly or indirectly for the DOD is performed on a fixed-price basis. Under fixed-price contracts, the price paid to the contractor is awarded based on competition at the outset of the contract and therefore, with the exception of limited escalation provisions on specific materials, is generally not  For the Housewares/Small Appliance segment, revenue is generally recognized as the completed, ordered product is shipped to the customer from the Company’s warehouses. For the relatively few situations in which revenue should be recognized when product is received by the customer, the Company adjusts revenue accordingly. For the year ended December 31, 2020, may 2019, may one four not no  The timing of revenue recognition, billings, and cash collections results in billed accounts receivable, and customer advances and deposits (contract liabilities) on the Company’s Condensed Consolidated Balance Sheets. For the Defense segment, the Company occasionally receives advances or deposits from certain customers before revenue is recognized, resulting in contract liabilities. These advances or deposits do not December 31, 2020 2019 2020, 2019, 2018, 2020 2019, no no December 31, 2020 2019 one  The Company’s principal sources of revenue are derived from two 
Advertising Cost [Policy Text Block]	( 13 2020, 2019, 2018 
Standard Product Warranty, Policy [Policy Text Block]	( 14  The product warranty liability is included in accounts payable on the balance sheet. The following table shows the changes in product warranty liability for the period:  (In thousands) Year Ended December 31 2020 2019 Beginning balance January 1 $ 263 $ 221 Accruals during the period 303 416 Charges / payments made under the warranties (325 ) (374 ) Balance December 31 $ 241 $ 263  Included in accounts payable as of December 31, 2020
Share-based Payment Arrangement [Policy Text Block]	( 15 718, Compensation — Stock Compensation 718, 
Income Tax, Policy [Policy Text Block]	( 16 740, Income Taxes 
New Accounting Pronouncements, Policy [Policy Text Block]	( 17 In December 2019, No. 2019 12, Simplifying the Accounting for Income Taxes 740, Income Taxes December 15, 2020. 2019 12 not  In June 2016, No. 2016 13, Financial Instruments—Credit Losses (Topic 326 2016 13 2016 13 January 1, 2020 2016 13 not   Other pronouncements issued but not December 31, 2020 not 

Note A - Summary of Significa_2

Note A - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	(In thousands) MARKETABLE SECURITIES Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses December 31, 2020 Tax-exempt Municipal Bonds $ 42,817 $ 43,013 $ 196 $ - Variable Rate Demand Notes 25,968 25,968 - - Total Marketable Securities $ 68,785 $ 68,981 $ 196 $ - December 31, 2019 Tax-exempt Municipal Bonds $ 39,313 $ 39,484 $ 176 $ 5 Variable Rate Demand Notes 39,249 39,249 - - Total Marketable Securities $ 78,562 $ 78,733 $ 176 $ 5
Schedule of Product Warranty Liability [Table Text Block]	(In thousands) Year Ended December 31 2020 2019 Beginning balance January 1 $ 263 $ 221 Accruals during the period 303 416 Charges / payments made under the warranties (325 ) (374 ) Balance December 31 $ 241 $ 263

Note B - Inventories (Tables)

Note B - Inventories (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule Of Potential Impact Of LIFO Valuation to FIFO Valuation [Table Text Block]	Increase (Decrease) – (In thousands, except per share data) Year Cost of Sales Net Earnings Earnings Per Share 2020 $ (447 ) $ 349 $ 0.05 2019 $ 42 $ (34 ) $ - 2018 $ (189 ) $ 143 $ 0.02

Note F - Stock-based Compensa_2

Note F - Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	2020 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Non-vested at beginning of period 18,604 $ 93.23 32,337 $ 87.84 29,810 $ 83.40 Granted 7,310 89.84 4,138 98.54 3,886 116.49 Vested (3,193 ) 59.94 (17,871 ) 84.71 (1,359 ) 72.25 Forfeited 0 - 0 - 0 - Non-vested at end of period 22,721 $ 96.82 18,604 $ 93.23 32,337 $ 87.84

Note H - Income Taxes (Tables)

Note H - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	For Years Ended December 31 (in thousands) 2020 2019 2018 Current: Federal $ 12,932 $ 11,453 $ 10,996 State 1,816 537 1,575 14,748 11,990 12,571 Deferred: Federal (1,210 ) (179 ) (280 ) State (508 ) (45 ) 159 (1,718 ) (224 ) (121 ) Total tax provision $ 13,030 $ 11,766 $ 12,450
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Percent of Pre-tax Income 2020 2019 2018 Statutory rate 21.0 % 21.0 % 21.0 % State tax, net of federal benefit 1.7 % 0.7 % 2.6 % Tax exempt interest and dividends (0.1 %) (0.1 %) (0.6 %) Other (0.9 %) 0.9 % 0.8 % Effective rate 21.7 % 22.5 % 23.8 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(In thousands) 2020 2019 Deferred tax assets Insurance (primarily product liability) $ 978 $ 947 Vacation 813 662 Inventory 754 642 State NOL and tax credit carryforwards 825 - Product recall 610 - Deferred payroll taxes 414 - Deferred compensation 203 162 Environmental 214 227 Other 330 200 Subtotal 5,141 2,840 Less: valuation allowance (520) - Total deferred tax assets 4,621 2,840 Deferred tax liabilities Goodwill and other intangibles 1,585 1,391 Depreciation 1 131 Deferred revenue 41 37 Total deferred tax liabilities 1,627 1,559 Net deferred tax assets $ 2,994 $ 1,281
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	(In thousands) 2020 2019 Balance at January 1 $ 2,237 $ 320 Increases for tax positions taken related to the current year 944 453 Increases for tax positions taken related to prior years 46 1,519 Decreases for tax positions taken related to prior years - - Lapse of statute of limitations (706 ) (55 ) Settlements - - Balance at December 31 $ 2,521 $ 2,237

Note K - Environmental (Tables)

Note K - Environmental (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule Of Expected Future Payments Of Environmental Matters [Table Text Block]	(In thousands) Years Ending December 31: 2021 $ 180 2022 143 2023 130 2024 118 2025 106 Thereafter 293 $ 970

Note L - Business Segments (Tab

Note L - Business Segments (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	(in thousands) Housewares / Small Appliance Defense Safety Assets Held for Sale Total Year ended December 31, 2020 External net sales $ 117,645 $ 234,645 337 $ 352,627 Gross profit (loss) 24,206 62,561 (1,845 ) 84,922 Operating profit (loss) 10,371 52,810 (6,985 ) 56,196 Total assets 245,662 164,951 22,557 $ - 433,170 Depreciation and amortization 983 1,743 279 3,005 Capital expenditures 828 1,678 115 2,621 Year ended December 31, 2019 External net sales $ 99,401 $ 209,114 (5 ) $ 308,510 Gross profit (loss) 15,358 57,773 (1,206 ) 71,925 Operating profit (loss) 2,522 47,845 (3,987 ) 46,380 Total assets 241,992 148,476 19,785 $ - 410,253 Depreciation and amortization 1,250 2,138 301 3,689 Capital expenditures 804 2,155 179 3,138 Year ended December 31, 2018 External net sales $ 93,733 $ 229,546 38 $ 323,317 Gross profit (loss) 15,563 60,979 (659 ) 75,883 Operating profit (loss) 4,479 44,911 (1,488 ) 47,902 Total assets 268,007 132,636 12,600 $ 375 413,618 Depreciation and amortization 1,161 4,835 223 6,219 Capital expenditures 7,974 676 36 8,686

Note M - Leases (Tables)

Note M - Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Lease, Cost [Table Text Block]	Year Ended Year Ended Summary of Lease Cost (in thousands) December 31, 2020 December 31, 2019 Operating lease cost $ 729 $ 691 Short-term and variable lease cost 452 225 Total lease cost $ 1,181 $ 916
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Years ending December 31: (In thousands) 2021 $ 741 2022 745 2023 599 2024 497 2025 426 Thereafter 1,069 Total lease payments $ 4,077 Less: future interest expense 714 Lease liabilities $ 3,363
Operating Lease, Lease Income [Table Text Block]	Years ending December 31: (In thousands) 2021 $ 1,843 2022 1,837 2023 1,837 2024 1,837 2025 1,837 Thereafter 12,859 Total lease payments $ 22,050

Note N - Interim Financial In_2

Note N - Interim Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Quarterly Financial Information [Table Text Block]	(In thousands, except per share data) Per Share (basic and diluted) Quarter Net Sales Gross Profit Earnings from Continuing Operations Earnings from Discontinued Operations, net of tax Net Earnings Earnings from Continuing Operations Earnings from Discontinued Operations, net of tax Net Earnings 2020 First $ 65,636 $ 16,117 $ 8,222 $ - $ 8,222 $ 1.17 $ - $ 1.17 Second 87,132 21,743 12,657 - 12,657 1.80 - 1.80 Third 93,937 20,718 12,138 - 12,138 1.72 - 1.72 Fourth 105,922 26,344 13,941 - 13,941 1.98 - 1.98 Total $ 352,627 $ 84,922 $ 46,958 $ - $ 46,958 $ 6.67 $ - $ 6.67 2019 First $ 63,850 $ 12,492 $ 5,951 $ - $ 5,951 $ 0.85 $ - $ 0.85 Second 71,745 14,676 8,153 3 8,156 1.16 - 1.16 Third 78,006 23,847 14,712 1,677 16,389 2.09 0.24 2.33 Fourth 94,909 20,910 11,724 - 11,724 1.68 - 1.68 Total $ 308,510 $ 71,925 $ 40,540 $ 1,680 $ 42,220 $ 5.78 $ 0.24 $ 6.02

Note P - Discontinued Operati_2

Note P - Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	For the years ended December 31, (in thousands) 2020 2019 2018 Net sales $ - $ - $ - Cost of sales - - 65 Other income (expense) - 2,126 - Earnings from discontinued operations before provision for income taxes - 2,126 65 Provision for income taxes from discontinued operations - 446 14 Earnings from discontinued operations, net of tax $ - $ 1,680 $ 51

Note R - Business Acquisition (

Note R - Business Acquisition (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	(in thousands) Cash $ 287 Receivables 14 Inventory 307 Other current assets 105 Property, plant and equipment 35 Intangibles 2,141 Goodwill 3,831 Right-of-Use Lease Assets 59 Total assets acquired 6,779 Less: Current liabilities assumed 255 Lease Liability - Noncurrent 23 Net assets acquired $ 6,501
Business Acquisition, Pro Forma Information [Table Text Block]	(unaudited) (in thousands, except per share data) Year Ended December 31, 2019 December 31, 2018 Net sales $ 308,561 $ 323,424 Net earnings 40,822 38,391 Net earnings per share (basic and diluted) $ 5.82 $ 5.48 Weighted average shares outstanding (basic and diluted) 7,018 7,005

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Valuation Allowances and Reserves [Table Text Block]	(In thousands) Column A Column B Column C Column C Column D Column E Description Balance at Beginning of Period Additions - Charged to Costs and Expenses (A) Additions - Charged to Other Accounts (B) Deductions (C) Balance at End of Period Deducted from assets: Allowance for doubtful accounts: Year ended December 31, 2020 $ 450 $ - $ - $ 138 $ 312 Year ended December 31, 2019 $ 747 $ 6 $ - $ 303 $ 450 Year ended December 31, 2018 $ 1,869 $ 458 $ (1,422 ) $ 158 $ 747 Valuation allowance for deferred tax assets: Year ended December 31, 2020 $ - $ 520 $ - $ - $ 520

Note A - Summary of Significa_3

Note A - Summary of Significant Accounting Policies 1 (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable, Other, Current		$ 4,510,000	$ 1,308,000
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale, Total		57,823,000	161,420,000	$ 173,060,000
Debt Securities, Available-for-sale, Realized Gain (Loss), Total		0	0	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax, Total		24,000	145,000	135,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax, Total		0	0	0
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One		38,007,000
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five		5,006,000
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10		825,000
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10		$ 25,143,000
Debt Securities, Available for Sale, Number of Days to Tender (Day)		7 days
Property, Plant and Equipment, Gross, Ending Balance		$ 96,488,000	93,982,000
Goodwill, Impairment Loss		0	0	0
Goodwill, Ending Balance		15,317,000	15,317,000
Impairment of Intangible Assets (Excluding Goodwill), Total		0	0
Finite-Lived Intangible Assets, Gross, Total		2,142,000
Finite-Lived Intangible Assets, Accumulated Amortization		304,000	83,000
Amortization of Intangible Assets, Total		221,000	83,000	2,167,000
Finite-Lived Intangible Asset, Expected Amortization, Year One		214,000
Finite-Lived Intangible Asset, Expected Amortization, Year Two		214,000
Finite-Lived Intangible Asset, Expected Amortization, Year Three		214,000
Finite-Lived Intangible Asset, Expected Amortization, Year Four		214,000
Finite-Lived Intangible Asset, Expected Amortization, Year Five		$ 214,000
Expected Prepayment Utilization Period (Year)		2 years
Contract with Customer, Liability, Decrease from Product Recall		$ 2,073,000
Advertising Expense		$ 2,655,000	245,000	181,000
Initial Product Return Period (Day)		60 days
Estimated Product Recall Payable		$ 2,769,000
Other Current Assets [Member]
Materials, Supplies, and Other		4,311,000	4,614,000
Accounts Payable and Accrued Liabilities [Member]
Contract with Customer, Liability, Current		4,723,000	1,847,000
Defense [Member]
Impairment of Long-Lived Assets Held-for-use	$ 2,975,000
Goodwill, Ending Balance		11,486,000
Goodwill, Impaired, Accumulated Impairment Loss		0
Impairment of Intangible Assets (Excluding Goodwill), Total	$ 46,000
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Modification of Contract			9,412,000
Contract with Customer, Liability, Revenue Recognized		0	9,574,000	$ 676,000
Revenue, Remaining Performance Obligation, Amount		320,214,000	310,385,000
Safety [Member]
Goodwill, Ending Balance		3,831,000
Goodwill, Impaired, Accumulated Impairment Loss		0
Housewares/Small Appliances [Member]
Materials, Supplies, and Other		11,217,000	9,396,000
Building [Member] | Defense [Member]
Construction in Progress, Gross		1,398,000	$ 2,413,000
Leased Manufacturing and Office Space [Member]
Property, Plant and Equipment, Gross, Ending Balance		$ 6,774,000
Minimum [Member]
Accounts Receivable, Collection Period (Day)		25 days
Finite-Lived Intangible Asset, Useful Life (Year)		2 years
Revenue Contract Period (Month)		3 months
Minimum [Member] | Housewares/Small Appliances [Member]
Standard Product Warranty, Coverage Period (Year)		1 year
Minimum [Member] | Building [Member]
Property, Plant and Equipment, Useful Life (Year)		15 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Minimum [Member] | Land Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)		15 years
Maximum [Member]
Accounts Receivable, Collection Period (Day)		60 days
Finite-Lived Intangible Asset, Useful Life (Year)		15 years
Revenue Contract Period (Month)		24 months
Maximum [Member] | Housewares/Small Appliances [Member]
Standard Product Warranty, Coverage Period (Year)		12 years
Maximum [Member] | Building [Member]
Property, Plant and Equipment, Useful Life (Year)		40 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years
Maximum [Member] | Land Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)		20 years

Note A - Summary of Significa_4

Note A - Summary of Significant Accounting Policies 2 (Details Textual) - Defense [Member] - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01	Dec. 31, 2020
Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	18 months
Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	24 months

Note A - Summary of Significa_5

Note A - Summary of Significant Accounting Policies - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Amortized Cost	$ 68,785	$ 78,562
Fair Value	68,981	78,733
Gross Unrealized Gains	196	176
Gross Unrealized Losses	0	5
Nontaxable Municipal Bonds [Member]
Amortized Cost	42,817	39,313
Fair Value	43,013	39,484
Gross Unrealized Gains	196	176
Gross Unrealized Losses	0	5
Variable Rate Demand Obligation [Member]
Amortized Cost	25,968	39,249
Fair Value	25,968	39,249
Gross Unrealized Gains	0	0
Gross Unrealized Losses	$ 0	$ 0

Note A - Summary of Significa_6

Note A - Summary of Significant Accounting Policies - Changes in Product Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Beginning balance January 1	$ 263	$ 221
Accruals during the period	303	416
Charges / payments made under the warranties	(325)	(374)
Balance December 31	$ 241	$ 263

Note B - Inventories (Details T

Note B - Inventories (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
LIFO Inventory Amount	$ 30,515,000	$ 32,744,000
Excess of Replacement or Current Costs over Stated LIFO Value	4,429,000	3,982,000
Effect of LIFO Inventory Liquidation on Income	2,215,000	85,000	$ 26,000
FIFO Inventory Amount	104,973,000	95,792,000
Inventory, Finished Goods, Gross, Total	925,000	751,000
Inventory, Work in Process, Gross	96,463,000	87,805,000
Inventory, Raw Materials and Supplies, Gross, Total	$ 7,585,000	$ 7,236,000

Note B - Inventories - Schedule

Note B - Inventories - Schedule of Potential Impact of LIFO Valuation to FIFO Valuation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cost of Sales	$ (447)	$ 42	$ (189)
Net Earnings	$ 349	$ (34)	$ 143
Earnings Per Share (in dollars per share)	$ 0.05	$ 0	$ 0.02

Note C - Accrued Liabilities (D

Note C - Accrued Liabilities (Details Textual) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Employee-related Liabilities, Total	$ 7,474,000	$ 6,341,000
Loss Contingency Accrual, Product Liability, Gross, Total	5,618,000	5,055,000
Taxes Payable, Current, Total	1,187,000
Accrual for Environmental Loss Contingencies, Ending Balance	970,000	1,050,000
Other Accrued Liabilities, Current	$ 1,019,000	$ 878,000

Note D - Treasury Stock (Detail

Note D - Treasury Stock (Details Textual) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	498,727
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	344	4,584	62

Note F - Stock-based Compensa_3

Note F - Stock-based Compensation (Details Textual)	12 Months Ended
	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares	May 16, 2017shares	May 18, 2010shares
Share Based Compensation Arrangement, Number of Plan Participants	29
Share-based Payment Arrangement, Expense | $	$ 366,000	$ 830,000	$ 469,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $	$ 1,272,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	3 years 10 months 24 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	7,310	4,138	3,886
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	3,193	17,871	1,359
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Year	2021
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Year	2026
The Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)					50,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	0
The 2017 Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)				150,000

Note F - Stock-based Compensa_4

Note F - Stock-based Compensation - Activity for Non-vested Restricted Stock (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Non-vested, shares (in shares)	18,604	32,337	29,810
Non-vested, weighted average fair value at grant date (in dollars per share)	$ 93.23	$ 87.84	$ 83.40
Granted, shares (in shares)	7,310	4,138	3,886
Granted, weighted average fair value at grant date (in dollars per share)	$ 89.84	$ 98.54	$ 116.49
Vested, shares (in shares)	(3,193)	(17,871)	(1,359)
Vested, weighted average fair value at grant date (in dollars per share)	$ 59.94	$ 84.71	$ 72.25
Forfeited, shares (in shares)	0	0	0
Forfeited, weighted average fair value at grant date (in dollars per share)	$ 0	$ 0	$ 0
Non-vested, shares (in shares)	22,721	18,604	32,337
Non-vested, weighted average fair value at grant date (in dollars per share)	$ 96.82	$ 93.23	$ 87.84

Note G - 401(k) Plan (Details T

Note G - 401(k) Plan (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employer Contribution Common Stock [Member]
Defined Contribution Plan, Percentage of Specified Salary Amount Matched by Employer	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Defined Contribution Plan, Cost	$ 1,249,000	$ 1,197,000	$ 1,218,000
Employer Contribution Cash [Member]
Defined Contribution Plan, Percentage of Specified Salary Amount Matched by Employer	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Defined Contribution Plan, Cost	$ 813,000	802,000	821,000
Certain Employees [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
The 401 (k) for Employees at Amron Division of the AMTEC Subsidiary [Member]
Defined Contribution Plan, Cost	$ 443,000	$ 387,000	$ 352,000

Note H - Income Taxes (Details

Note H - Income Taxes (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets, Valuation Allowance, Total		$ 520,000	$ 0
Unrecognized Tax Benefits, Ending Balance		2,521,000	2,237,000	$ 320,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total		$ 142,000	$ 298,000	$ 14,000
Open Tax Year		2017 2018 2019
State and Local Jurisdiction [Member] | Wisconsin Department of Revenue [Member]
Income Tax Examination, Year under Examination				2013 2014 2015 2016
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination, Year under Examination	2012 2013

Note H - Income Taxes - Provisi

Note H - Income Taxes - Provision for Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Federal	$ 12,932	$ 11,453	$ 10,996
State	1,816	537	1,575
Current Income Tax Expense (Benefit), Total	14,748	11,990	12,571
Federal	(1,210)	(179)	(280)
State	(508)	(45)	159
Deferred Income Tax Expense (Benefit), Total	(1,718)	(224)	(121)
Total tax provision	$ 13,030	$ 11,766	$ 12,450

Note H - Income Taxes - Reconci

Note H - Income Taxes - Reconciliation of Statutory Rate to Effective Rate (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statutory rate	21.00%	21.00%	21.00%
State tax, net of federal benefit	1.70%	0.70%	2.60%
Tax exempt interest and dividends	(0.10%)	(0.10%)	(0.60%)
Other	(0.90%)	0.90%	0.80%
Effective rate	21.70%	22.50%	23.80%

Note H - Income Taxes - Deferre

Note H - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Insurance (primarily product liability)	$ 978,000	$ 947,000
Vacation	813,000	662,000
Inventory	754,000	642,000
State NOL and tax credit carryforwards	825,000	0
Product recall	610,000	0
Deferred payroll taxes	414,000	0
Deferred compensation	203,000	162,000
Environmental	214,000	227,000
Other	330,000	200,000
Subtotal	5,141,000	2,840,000
Less: valuation allowance	(520,000)	0
Total deferred tax assets	4,621,000	2,840,000
Goodwill and other intangibles	1,585,000	1,391,000
Depreciation	1,000	131,000
Deferred revenue	41,000	37,000
Total deferred tax liabilities	1,627,000	1,559,000
Net deferred tax assets	$ 2,994,000	$ 1,281,000

Note H - Income Taxes - Recon_2

Note H - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance at January 1	$ 2,237,000	$ 320,000
Increases for tax positions taken related to the current year	944,000	453,000
Increases for tax positions taken related to prior years	46,000	1,519,000
Decreases for tax positions taken related to prior years	0	0
Lapse of statute of limitations	(706,000)	(55,000)
Settlements	0	0
Balance at December 31	$ 2,521,000	$ 2,237,000

Note I - Commitments and Cont_2

Note I - Commitments and Contingencies (Details Textual) - Property Tax Assessment [Member] - USD ($)	1 Months Ended
	Jun. 30, 2020	Dec. 31, 2020
Loss Contingency, Damages Sought, Value	$ 2,506,000
Loss Contingency Accrual, Ending Balance		$ 0

Note J - Concentrations (Detail

Note J - Concentrations (Details Textual)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Entity Employees, Union Members	231
Percentage of Entity Employees, Union Members	24.00%
Housewares/Small Appliances [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	2	1	1
Concentration Risk, Percentage	10.00%	12.00%	10.00%

Note K - Environmental (Details

Note K - Environmental (Details Textual) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Accrual for Environmental Loss Contingencies, Ending Balance	$ 970,000	$ 1,050,000

Note K - Environmental - Expect

Note K - Environmental - Expected Future Payments for Environmental Matters (Details) $ in Thousands	Dec. 31, 2020USD ($)
2021	$ 180
2022	143
2023	130
2024	118
2025	106
Thereafter	293
Accrual for Environmental Loss Contingencies, Gross, Total	$ 970

Note L - Business Segments (Det

Note L - Business Segments (Details Textual)	12 Months Ended
	Dec. 31, 2020
Number of Operating Segments	3
Government Contract, Number of Contractors	2
Supply Commitment, Commitment Term (Year)	5 years

Note L - Business Segments - Se

Note L - Business Segments - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues, Total	$ 105,922	$ 93,937	$ 87,132	$ 65,636	$ 94,909	$ 78,006	$ 71,745	$ 63,850	$ 352,627	$ 308,510	$ 323,317
Gross profit (loss)	26,344	$ 20,718	$ 21,743	$ 16,117	20,910	$ 23,847	$ 14,676	$ 12,492	84,922	71,925	75,883
Operating profit (loss)									56,196	46,380	47,902
Total assets	433,170				410,253				433,170	410,253	413,618
Depreciation and amortization									3,005	3,689	6,219
Capital expenditures									2,621	3,138	8,686
Segment Reconciling Items [Member] | Discontinued Operations, Held-for-sale [Member]
Revenues, Total
Gross profit (loss)
Operating profit (loss)
Total assets	0				0				0	0	375
Depreciation and amortization
Capital expenditures
Housewares/Small Appliances [Member] | Operating Segments [Member]
Revenues, Total									117,645	99,401	93,733
Gross profit (loss)									24,206	15,358	15,563
Operating profit (loss)									10,371	2,522	4,479
Total assets	245,662				241,992				245,662	241,992	268,007
Depreciation and amortization									983	1,250	1,161
Capital expenditures									828	804	7,974
Defense [Member] | Operating Segments [Member]
Revenues, Total									234,645	209,114	229,546
Gross profit (loss)									62,561	57,773	60,979
Operating profit (loss)									52,810	47,845	44,911
Total assets	164,951				148,476				164,951	148,476	132,636
Depreciation and amortization									1,743	2,138	4,835
Capital expenditures									1,678	2,155	676
Safety [Member] | Operating Segments [Member]
Revenues, Total									337	(5)	38
Gross profit (loss)									(1,845)	(1,206)	(659)
Operating profit (loss)									(6,985)	(3,987)	(1,488)
Total assets	$ 22,557				$ 19,785				22,557	19,785	12,600
Depreciation and amortization									279	301	223
Capital expenditures									$ 115	$ 179	$ 36

Note M - Leases (Details Textua

Note M - Leases (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2019
Operating Lease, Expense	$ 1,182,000	$ 1,114,000	$ 1,050,000
Operating Lease, Payments	$ 1,181,000	916,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	6 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	5.60%
Operating Lease, Lease Income, Lease Payments	$ 1,967,000	1,788,000
Operating Lease, Right-of-Use Asset	3,363,000	$ 3,521,000		$ 3,832,000
Operating Lease, Liability, Total	$ 3,363,000			$ 3,832,000

Note M - Leases - Lease Cost (D

Note M - Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating lease cost	$ 729	$ 691
Short-term and variable lease cost	452	225
Total lease cost	$ 1,181	$ 916

Note M - Leases - Lease Maturit

Note M - Leases - Lease Maturities (Details) - USD ($)	Dec. 31, 2020	Jan. 01, 2019
2021	$ 741,000
2022	745,000
2023	599,000
2024	497,000
2025	426,000
Thereafter	1,069,000
Total lease payments	4,077,000
Less: future interest expense	714,000
Lease liabilities	$ 3,363,000	$ 3,832,000

Note M - Leases - Operating Lea

Note M - Leases - Operating Lease Income (Details) $ in Thousands	Dec. 31, 2020USD ($)
2021	$ 1,843
2022	1,837
2023	1,837
2024	1,837
2025	1,837
Thereafter	12,859
Total lease payments	$ 22,050

Note N - Interim Financial In_3

Note N - Interim Financial Information (Unaudited) (Details Textual) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues, Total	$ 105,922,000	$ 93,937,000	$ 87,132,000	$ 65,636,000	$ 94,909,000	$ 78,006,000	$ 71,745,000	$ 63,850,000	$ 352,627,000	$ 308,510,000	$ 323,317,000
Defense [Member] | Negotiated Termination of Commercial Foreign Military Supply Contract [Member]
Revenues, Total						$ 9,412,000

Note N - Interim Financial In_4

Note N - Interim Financial Information (Unaudited) - Quarterly Unaudited Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net Sales	$ 105,922	$ 93,937	$ 87,132	$ 65,636	$ 94,909	$ 78,006	$ 71,745	$ 63,850	$ 352,627	$ 308,510	$ 323,317
Gross Profit	26,344	20,718	21,743	16,117	20,910	23,847	14,676	12,492	84,922	71,925	75,883
Earnings from Continuing Operations	13,941	12,138	12,657	8,222	11,724	14,712	8,153	5,951	46,958	40,540
Earnings from discontinued operations, net of tax	0	0	0	0	0	1,677	3	0	0	1,680
Net Earnings	$ 13,941	$ 12,138	$ 12,657	$ 8,222	$ 11,724	$ 16,389	$ 8,156	$ 5,951	$ 46,958	$ 42,220	$ 39,940
Earnings from Continuing Operations (in dollars per share)	$ 1.98	$ 1.72	$ 1.80	$ 1.17	$ 1.68	$ 2.09	$ 1.16	$ 0.85	$ 6.67	$ 5.78	$ 5.69
Earnings from Discontinued Operations, net of tax (in dollars per share)	0	0	0	0	0	0.24	0	0	0	0.24	0.01
Net Earnings (in dollars per share)	$ 1.98	$ 1.72	$ 1.80	$ 1.17	$ 1.68	$ 2.33	$ 1.16	$ 0.85	$ 6.67	$ 6.02	$ 5.70

Note O - Line of Credit and C_2

Note O - Line of Credit and Commercial Letters of Credit (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Letters of Credit Outstanding, Amount	$ 1,247,000	$ 1,247,000
Domestic Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	5,000,000
Long-term Line of Credit, Total	$ 0
Domestic Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%

Note P - Discontinued Operati_3

Note P - Discontinued Operations (Details Textual) - USD ($)	Jan. 03, 2017	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Lease, Lease Income, Lease Payments			$ 1,967,000	$ 1,788,000
Lease Agreement with Drylock [Member]
Lessor, Operating Lease, Term of Contract (Year)	10 years	14 years			14 years
Operating Lease, Lease Income, Lease Payments	$ 1,288,000	$ 1,837,000
Lessor, Operating Lease, Renewal Term (Year)		3 years			3 years
Lease Agreement with Drylock [Member] | Minimum [Member]
Lessor Operating Lease, Option to Terminate, Term (Year)		5 years
Lease Agreement with Drylock [Member] | Maximum [Member]
Lessor Operating Lease, Option to Terminate, Term (Year)		10 years
PAPI Assets [Member] | Discontinued Operations, Disposed of by Sale [Member]
Cash Provided by (Used in) Operating Activities, Discontinued Operations			0	(1,052,000)	$ (636,000)
Cash Provided by (Used in) Investing Activities, Discontinued Operations			$ 0	$ 3,107,000	$ 6,290,000

Note P - Discontinued Operati_4

Note P - Discontinued Operations - Summary of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 105,922	$ 93,937	$ 87,132	$ 65,636	$ 94,909	$ 78,006	$ 71,745	$ 63,850	$ 352,627	$ 308,510	$ 323,317
Cost of sales									267,705	236,585	247,434
Other income									3,792	5,926	4,437
Earnings from discontinued operations, net of tax	$ 0	$ 0	$ 0	$ 0	$ 0	$ 1,677	$ 3	$ 0	0	1,680
Discontinued Operations, Disposed of by Sale [Member]
Net sales									0	0	0
Cost of sales									0	0	65
Other income									0	2,126	0
Earnings from discontinued operations before provision for income taxes									0	2,126	65
Provision for income taxes from discontinued operations									0	446	14
Earnings from discontinued operations, net of tax									$ 0	$ 1,680	$ 51

Note Q - Divestiture (Details T

Note Q - Divestiture (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Oct. 17, 2018
Gain (Loss) on Disposition of Business		$ 0	$ 0	$ (2,528,000)
Financing Receivable, after Allowance for Credit Loss, Current, Total		$ 2,869,000	$ 2,853,000
AMTEC Less Lethal Systems, Inc [Member] | Disposal Group, Not Discontinued Operations [Member]
Disposal Group, Including Discontinued Operation, Consideration					$ 10,636,000
Impairment of Long-Lived Assets to be Disposed of	$ 3,021,000
Gain (Loss) on Disposition of Business				$ (2,528,000)

Note R - Business Acquisition_2

Note R - Business Acquisition (Details Textual) - USD ($)	Jul. 23, 2019	Dec. 31, 2020	Dec. 31, 2019
Business Combination, Pro Forma Information, Revenue Net of Sales Deductions of Acquiree Since Acquisition Date, Actual			$ (38,000)
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ (1,103,000)
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		15 years
OneEvent Technologies, Inc. [Member]
Business Combination, Consideration Transferred, Total	$ 6,501,000
Payments to Acquire Businesses, Gross	4,020,000
Business Combination, Consideration Transferred, Other	$ 2,364,000
Business Combination, Earn Out Evaluation Period (Year)	7 years
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 117,000
OneEvent Technologies, Inc. [Member] | Technology Software and Patent [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
OneEvent Technologies, Inc. [Member] | Technology Software and Patent [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years

Note R - Business Acquisition -

Note R - Business Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Jul. 23, 2019
GOODWILL	$ 15,317,000	$ 15,317,000
OneEvent Technologies, Inc. [Member]
Cash			$ 287,000
Receivables			14,000
Inventory			307,000
Other current assets			105,000
Property, plant and equipment			35,000
Intangibles			2,141,000
GOODWILL			3,831,000
Right-of-Use Lease Assets			59,000
Total assets acquired			6,779,000
Less: Current liabilities assumed			255,000
Lease Liability - Noncurrent			23,000
Net assets acquired			$ 6,501,000

Note R - Business Acquisition_3

Note R - Business Acquisition - Pro Forma Information (Details) - OneEvent Technologies, Inc. [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 308,561	$ 323,424
Net earnings	$ 40,822	$ 38,391
Net earnings per share (basic and diluted) (in dollars per share)	$ 5.82	$ 5.48
Weighted average shares outstanding (basic and diluted) (in shares)	7,018	7,005

Note S - Other (Details Textual

Note S - Other (Details Textual) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total	$ 7,399,000	$ 7,182,000

Note T - Subsequent Events (Det

Note T - Subsequent Events (Details Textual) - USD ($)	Mar. 12, 2021	Feb. 19, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Payments of Ordinary Dividends, Common Stock			$ 42,172,000	$ 42,087,000	$ 41,989,000
Subsequent Event [Member]
Payments of Ordinary Dividends, Common Stock	$ 44,083,000
Dividends Payable, Date of Record		Mar. 1, 2021
Subsequent Event [Member] | AMTEC Corporation [Member] | Government Contract [Member]
Contract with Customer, Liability, Total	$ 92,900,000
Subsequent Event [Member] | Regular Dividend [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 1
Subsequent Event [Member] | Extra Dividends [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 5.25

Schedule II - Valuation and Q_3

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance at Beginning of Period		$ 450	$ 747	$ 1,869
Additions - Charged to Costs and Expenses	[1]	0	6	458
Additions - Charged to Other Accounts	[2]	0	0	(1,422)
Deductions	[3]	138	303	158
Balance at End of Period		312	450	$ 747
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance at Beginning of Period		0
Additions - Charged to Costs and Expenses	[1]	520
Additions - Charged to Other Accounts	[2]	0
Deductions	[3]	0
Balance at End of Period		$ 520	$ 0
[1]	Amounts charged to selling and general expenses for allowance for doubtful accounts and provision for income taxes from continuing operations for valuation allowance for deferred tax assets.
[2]	Amounts charged to other accounts. Charged to the loss on divestiture of AMTEC Less Lethal Systems, Inc. (see Note Q to the Consolidated Financial Statements.
[3]	Principally bad debts written off, net of recoveries.