Clearfield (CLFD) 10-Q 3 Aug 22 2022 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Jun. 30, 2022	Jul. 19, 2022
Document Information [Line Items]
Entity Central Index Key	0000796505
Entity Registrant Name	Clearfield, Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2022
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	0-16106
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1347235
Entity Address, Address Line One	7050 Winnetka Avenue North, Suite 100
Entity Address, City or Town	Brooklyn Park
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55428
City Area Code	763
Local Phone Number	476-6866
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CLFD
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		13,777,682

Condensed Balance Sheets (Curre

Condensed Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current Assets
Cash and cash equivalents	$ 14,192	$ 13,216
Short-term investments	3,894	10,374
Accounts receivables, net	31,594	19,438
Inventories, net	69,341	27,524
Other current assets	1,050	954
Total current assets	120,071	71,506
Property, plant and equipment, net	9,567	4,998
Other Assets
Long-term investments	24,994	36,913
Goodwill	4,709	4,709
Intangible assets, net	4,691	4,696
Right of use lease assets	12,715	2,305
Deferred tax asset	647	365
Other	553	420
Total other assets	48,309	49,408
Total Assets	177,947	125,912
Current Liabilities
Current portion of lease liability	2,774	915
Accounts payable	16,243	9,215
Accrued compensation	8,918	8,729
Accrued expenses	2,758	1,613
Total current liabilities	30,693	20,472
Other Liabilities
Long-term portion of lease liability	10,480	1,615
Total liabilities	41,173	22,087
Shareholders’ Equity
Preferred stock, $.01 par value; 500,000 shares; no shares issued or outstanding	0	0
Common stock, authorized 50,000,000, $.01 par value; 13,777,682 and 13,732,188 shares issued and outstanding as of June 30, 2022 and September 30, 2021	138	137
Additional paid-in capital	59,784	58,246
Accumulated other comprehensive loss	960	0
Retained earnings	77,812	45,442
Total shareholders’ equity	136,774	103,825
Total Liabilities and Shareholders’ Equity	$ 177,947	$ 125,912

Condensed Balance Sheets (Cur_2

Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2022	Sep. 30, 2021
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	13,777,682	13,732,188
Common stock, shares outstanding (in shares)	13,777,682	13,732,188

Condensed Statements of Earning

Condensed Statements of Earnings (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 71,250,000	$ 38,735,000	$ 175,854,000	$ 95,519,000
Cost of sales	41,943,000	21,598,000	100,411,000	54,071,000
Gross profit	29,307,000	17,137,000	75,443,000	41,448,000
Operating expenses
Selling, general and administrative	12,721,000	9,435,000	33,877,000	25,581,000
Income from operations	16,586,000	7,702,000	41,566,000	15,867,000
Net investment income	43,000	121,000	284,000	378,000
Income before income taxes	16,629,000	7,823,000	41,850,000	16,245,000
Income tax expense	3,884,000	1,725,000	9,480,000	3,344,000
Net income	$ 12,745,000	$ 6,098,000	$ 32,370,000	$ 12,901,000
Net income per share Basic (in dollars per share)	$ 0.93	$ 0.44	$ 2.35	$ 0.94
Net income per share Diluted (in dollars per share)	$ 0.92	$ 0.44	$ 2.33	$ 0.94
Weighted average shares outstanding:
Basic (in shares)	13,772,269	13,732,913	13,760,950	13,718,394
Diluted (in shares)	13,899,698	13,812,510	13,900,019	13,762,897

Condensed Statements of Compreh

Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 12,745	$ 6,098	$ 32,370	$ 12,901
Other comprehensive loss before income taxes:
Unrealized losses on available-for-sale adjustments	(309)	0	(1,241)	0
Total other comprehensive loss before income taxes	(309)	0	(1,241)	0
Income tax benefit	(74)	0	(281)	0
Total other comprehensive loss	(235)	0	(960)	0
Total comprehensive income	$ 12,510	$ 6,098	$ 31,410	$ 12,901

Condensed Statements of Shareho

Condensed Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Sep. 30, 2020	13,650
Balances at September 30, 2021 at Sep. 30, 2020	$ 137	$ 57,503	$ 0	$ 25,114	$ 82,754
Stock-based compensation expense	$ 0	966	0	0	966
Restricted stock issuance, net of forfeitures (in shares)	37
Restricted stock issuance, net of forfeitures	$ 0	0	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)	24
Issuance of common stock under employee stock purchase plan	$ 0	383	0	0	383
Withholding related to exercise of stock options (in shares)	34
Withholding related to exercise of stock options	$ 0	(456)	0	0	(456)
Other comprehensive loss	0	(54)	0	0	(54)
Net income	$ 0	0	0	12,901	12,901
Balance (in shares) at Jun. 30, 2021	13,743
Balances at June 30, 2022 at Jun. 30, 2021	$ 137	58,342	0	38,015	96,494
Balance (in shares) at Mar. 31, 2021	13,733
Balances at September 30, 2021 at Mar. 31, 2021	$ 137	57,794	0	31,917	89,848
Stock-based compensation expense	$ 0	343	0	0	343
Issuance of common stock under employee stock purchase plan (in shares)	10
Issuance of common stock under employee stock purchase plan	$ 0	205	0	0	205
Net income	$ 0	0	0	6,098	6,098
Balance (in shares) at Jun. 30, 2021	13,743
Balances at June 30, 2022 at Jun. 30, 2021	$ 137	58,342	0	38,015	96,494
Balance (in shares) at Sep. 30, 2021	13,732
Balances at September 30, 2021 at Sep. 30, 2021	$ 137	58,246	0	45,442	103,825
Stock-based compensation expense	$ 0	1,647	0	0	1,647
Restricted stock issuance, net of forfeitures (in shares)	27
Restricted stock issuance, net of forfeitures	$ 1	0	0	0	1
Issuance of common stock under employee stock purchase plan (in shares)	13
Issuance of common stock under employee stock purchase plan	$ 0	544	0	0	544
Withholding related to exercise of stock options (in shares)	10
Withholding related to exercise of stock options	$ 0	(379)	0	0	(379)
Other comprehensive loss	0	0	(960)	0	(960)
Net income	$ 0	0	0	32,370	32,370
Repurchase of shares for payment of withholding taxes for vested restricted stock grants (in shares)	(4)
Repurchase of shares for payment of withholding taxes for vested restricted stock grants	$ 0	(274)	0	0	(274)
Balance (in shares) at Jun. 30, 2022	13,778
Balances at June 30, 2022 at Jun. 30, 2022	$ 138	59,784	(960)	77,812	136,774
Balance (in shares) at Mar. 31, 2022	13,773
Balances at September 30, 2021 at Mar. 31, 2022	$ 138	58,949	(725)	65,067	123,429
Stock-based compensation expense	$ 0	638	0	0	638
Restricted stock issuance, net of forfeitures (in shares)	(3)
Restricted stock issuance, net of forfeitures	$ 0	0	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)	6
Issuance of common stock under employee stock purchase plan	$ 0	294	0	0	294
Withholding related to exercise of stock options (in shares)	2
Withholding related to exercise of stock options	$ 0	(97)	0	0	(97)
Other comprehensive loss	0	0	(235)	0	(235)
Net income	$ 0	0	0	12,745	12,745
Balance (in shares) at Jun. 30, 2022	13,778
Balances at June 30, 2022 at Jun. 30, 2022	$ 138	$ 59,784	$ (960)	$ 77,812	$ 136,774

Condensed Statements of Cash Fl

Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net income	$ 32,370	$ 12,901
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	2,174	1,725
Change in allowance for doubtful accounts	0	210
Stock-based compensation	1,647	966
Changes in operating assets and liabilities:
Accounts receivable	(12,156)	(5,896)
Inventories, net	(41,816)	(6,571)
Other assets	(185)	(261)
Accounts payable and accrued expenses	8,677	5,043
Net cash (used in) provided by operating activities	(9,289)	8,117
Cash flows from investing activities
Purchases of property, plant and equipment and intangible assets	(6,764)	(1,275)
Purchases of investments	(248)	(11,904)
Proceeds from sales and maturities of investments	17,386	10,044
Net cash provided by (used in) investing activities	10,374	(3,135)
Cash flows from financing activities
Proceeds from issuance of common stock under employee stock purchase plan	544	383
Repurchase of shares for payment of withholding taxes for vested restricted stock grants	(274)	(54)
Withholding related to exercise of stock options	(379)	(456)
Net cash used in financing activities	(109)	(127)
Increase in cash and cash equivalents	976	4,855
Cash and cash equivalents, beginning of period	13,216	16,450
Cash and cash equivalents, end of period	14,192	21,305
Supplemental disclosures for cash flow information
Cash paid during the year for income taxes	9,913	3,560
Non-cash financing activities
Cashless exercise of stock options	$ 276	$ 1,269

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Basis of Accounting [Text Block]	Note 1. The accompanying (a) condensed balance sheet as of September 30, 2021, three nine June 30, 2022 not 10 September 30, 2021. In preparation of the Company’s financial statements, management is required to make estimates and assumptions that affect reported amounts of assets and liabilities and related revenues and expenses during the reporting periods. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. New Accounting Pronouncements In June 2016, 2016 13, November 2018, 2018 19 2016 13. first 2023, 2016 13

Note 2 - Net Income Per Share

Note 2 - Net Income Per Share	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 2. Basic net income per common share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the reporting period. Diluted EPS equals net income divided by the sum of the weighted average number of shares of common stock outstanding plus all additional common stock equivalents, such as stock options, when dilutive. The following is a reconciliation of the numerator and denominator of the net income per common share computations for the three nine June 30, 2022 2021: Three Months Ended June 30, Nine Months Ended June 30, (In thousands, except for share data 2022 2021 2022 2021 Net income $ 12,745 $ 6,098 $ 32,370 $ 12,901 Weighted average common shares 13,772,269 13,732,913 13,760,950 13,718,394 Dilutive potential common shares 127,429 79,597 139,069 44,503 Weighted average dilutive common shares outstanding 13,899,698 13,812,510 13,900,019 13,762,897 Net income per common share: Basic $ 0.93 $ 0.44 $ 2.35 $ 0.94 Diluted $ 0.92 $ 0.44 $ 2.33 $ 0.94

Note 3 - Investments

Note 3 - Investments	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Investment [Text Block]	Note 3. The Company invests in certificates of deposit (“CDs”) that are fully insured by the Federal Deposit Insurance Corporation (“FDIC”) as well as U.S. Treasury and money market securities. Historically, the Company’s investment portfolio had been classified as held-to-maturity and recorded at amortized cost. During the second 2022, At June 30, 2022, June 30, 2022 (In thousands) Cost Unrealized Gains Unrealized Losses Fair Value Short-Term Certificates of deposit 3,962 1 69 3,894 Investment securities – short-term $ 3,962 $ 1 $ 69 $ 3,894 Long-Term U.S treasury securities $ 16,167 $ - $ 825 $ 15,342 Certificates of deposit 10,000 1 348 9,652 Investment securities – long-term $ 26,167 $ 1 $ 1,173 $ 24,994 At June 30, 2022, In Unrealized Loss Position For Less Than 12 Months In Unrealized Loss Position For Greater Than 12 Months (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S treasury securities $ 15,342 $ 825 $ - $ - Certificates of deposit 9,637 267 3,569 151 Investment securities $ 24,979 $ 1,092 $ 3,569 $ 151 As of June 30, 2022, June 30, 2022,

Note 4 - Fair Value Measurement

Note 4 - Fair Value Measurements	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 4. The Company determines the fair value of its assets and liabilities based on the market price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair value of U.S. treasury securities, and certificates of deposit based on valuations provided by an external pricing service, who obtains them from a variety of industry standard data providers. The Company’s investments are categorized according to the three one Level 1 Level 2 1, not Level 3 no 3 The following provides information regarding fair value measurements for our investment securities as of June 30, 2022 three Fair Value Measurements at June 30, 2022 (In thousands) Total Level 1 Level 2 Level 3 Investment securities: U.S treasury securities $ 15,342 $ - $ 15,342 $ - Certificates of deposit 13,546 - 13,546 - Total investment securities $ 28,888 $ - $ 28,888 $ - During the nine June 30, 2022 September 30, 2021, 3 no Non-financial assets such as equipment and leasehold improvements, goodwill and intangible assets and right-of-use assets for operating leases are subject to non-recurring fair value measurements if they are deemed impaired. We had no three nine June 30, 2022.

Note 5 - Other Comprehensive Lo

Note 5 - Other Comprehensive Loss	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	Note 5. Changes in components of other comprehensive loss and taxes related to items of other comprehensive income (loss) are as follows: Three Months Ended June 30, 2022 (In thousands) Before Tax Tax Effect Net of Tax Amount Unrealized losses on available-for-sale securities $ (309 ) $ (74 ) $ (235 ) Other comprehensive loss $ (309 ) $ (74 ) $ (235 ) Nine Months Ended June 30, 2022 (In thousands) Before Tax Tax Effect Net of Tax Amount Unrealized losses on available-for-sale securities $ (1,241 ) $ (281 ) $ (960 ) Other comprehensive loss $ (1,241 ) $ (281 ) $ (960 ) At June 30, 2022 (In thousands) Available-for-Sale Securities Accumulated Other Comprehensive Loss Balances at September 30, 2021 $ - $ - Other comprehensive loss for the nine months ended June 30, 2022 (960 ) (960 ) Balances at June 30, 2022 $ (960 ) $ (960 )

Note 6 - Stock-based Compensati

Note 6 - Stock-based Compensation	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	Note 6. The Company recorded $638,000 and $1,647,000 of compensation expense related to current and past restricted stock grants, non-qualified stock options and the Company’s Employee Stock Purchase Plan (“ESPP”) for the three nine June 30, 2022, three June 30, 2022, nine June 30, 2022, three nine June 30, 2021, three June 30, 2021, nine June 30, 2021, June 30, 2022, Stock Options The Company uses the Black-Scholes option pricing model to determine the fair value of options granted. During the nine June 30, 2022, five three nine June 30, 2021, five three The fair value of stock option awards during the nine June 30, 2022 Nine months ended June 30, 2022 Dividend yield 0 % Expected volatility 52.02 % Risk-free interest rate 0.97 % Expected life (years) 3.5 Vesting period (years) 3 The expected stock price volatility is based on the historical volatility of the Company’s stock for a period approximating the expected life. The expected life represents the period of time that options are expected to be outstanding after their grant date. The risk-free interest rate reflects the interest rate as of the grant date on zero Options are granted at fair market values determined on the date of grant and vesting normally occurs over a three five The following is a summary of stock option activity during the nine June 30, 2022: Number of options Weighted average exercise price Outstanding as of September 30, 2021 301,514 $ 16.25 Granted 62,730 66.48 Exercised (20,169 ) 13.70 Forfeited or Expired (2,084 ) 19.94 Outstanding as of June 30, 2022 341,991 $ 25.59 The intrinsic value of an option is the amount by which the fair value of the underlying stock exceeds its exercise price. As of June 30, 2022, Restricted Stock The Company’s 2007 one ten During the nine June 30, 2022, one nine June 30, 2022, one nine June 30, 2022, three During the nine June 30, 2021, 2021 one nine June 30, 2021, three Restricted stock transactions during the nine June 30, 2022 Number of shares Weighted average grant date fair value Unvested shares as of September 30, 2021 108,839 $ 17.14 Granted 29,512 65.90 Vested (14,384 ) 25.02 Forfeited (2,749 ) 16.84 Unvested as of June 30, 2022 121,218 $ 28.08 Employee Stock Purchase Plan The Company’s ESPP allows participating employees to purchase shares of the Company’s common stock at a discount through payroll deductions. The ESPP is available to all employees subject to certain eligibility requirements. Terms of the ESPP provide those participating employees the ability to purchase the Company’s common stock on a voluntary after-tax basis. Employees may no one six January 1 July 1 June 30, 2022 December 31, 2021, June 30, 2022,

Note 7 - Revenue

Note 7 - Revenue	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	Note 7. Revenue Recognition Net sales include products and shipping and handling charges. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products. All revenue is recognized when the Company satisfies its performance obligations under the contract. The Company recognizes revenue by transferring the promised products to the customer, with substantially all revenue recognized at the point in time the customer obtains control of the products. The Company recognizes revenue for shipping and handling charges at the time the products are delivered to or picked up by the customer. The majority of the Company’s contracts have a single performance obligation and are short term in nature. Sales taxes and value added taxes in foreign jurisdictions that are collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore are excluded from net sales. Disaggregation of Revenue The Company allocates sales from external customers to geographic areas based on the location to which the product is transported. Sales outside the United States are principally to countries in the Caribbean, Canada, Central and South America. Revenues related to the following geographic areas were as follows for the three nine Three Months Ended June 30, Nine Months Ended June 30, (In thousands) 2022 2021 2022 2021 United States $ 68,788 $ 35,810 $ 170,010 $ 89,586 All other countries 2,462 2,925 5,844 5,933 Total Net Sales $ 71,250 $ 38,735 $ 175,854 $ 95,519 The Company manufactures and sells a proprietary product line designed for the Broadband Service Provider marketplace. In addition, the Company’s Legacy business provides build-to-print services for original equipment manufacturers requiring copper and fiber cable assemblies built to their specification. The percentages of our sales by markets were as follows for the three nine Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Broadband service providers 99 % 98 % 99 % 98 % Legacy customers 1 % 2 % 1 % 2 % Total Net Sales 100 % 100 % 100 % 100 % Broadband Service Providers are made up of Community Broadband, which includes local and regional telecom companies, utilities, municipalities and alternative carriers, multiple system operators (“MSO’s, or Cable TV”), which are also referred to as Tier 2 3 1’s; Accounts Receivable Credit is extended based on the evaluation of a customer’s financial condition, and collateral is generally not June 30, 2022 September 30, 2021, See Note 9,

Note 8 - Inventories

Note 8 - Inventories	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 8. Inventories consist of the following as of: (In thousands) June 30, 2022 September 30, 2021 Raw materials $ 58,456 $ 23,072 Work-in-process 6,437 2,482 Finished goods 6,131 3,361 Inventories, gross 71,023 28,915 Inventory reserve (1,683 ) (1,391 ) Inventories, net $ 69,341 $ 27,524

Note 9 - Major Customer Concent

Note 9 - Major Customer Concentration	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	Note 9. For the three June 30, 2022, nine June 30, 2022, three June 30, 2021, 18% nine June 30, 2021, not As of June 30, 2022, September 30, 2021,

Note 10 - Goodwill and Intangib

Note 10 - Goodwill and Intangibles	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 10. The Company analyzes its goodwill for impairment annually or at an interim period when events occur or changes in circumstances indicate potential impairment. The result of the analysis performed as of September 30, 2021 not nine June 30, 2022, no The Company capitalizes legal costs incurred to obtain patents. Once accepted by either the U.S. Patent Office or the equivalent office of a foreign country, these legal costs are amortized using the straight-line method over the remaining estimated lives, not June 30, 2022, In addition, the Company has various finite lived intangible assets, most of which were acquired as a result of the acquisition of the active cabinet product line from Calix, Inc. during fiscal year 2018. September 30, 2021 not nine June 30, 2022,

Note 11 - Income Taxes

Note 11 - Income Taxes	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 11. For the three nine June 30, 2022, three nine June 30, 2022 162 For the three nine June 30, 2021, three nine June 30, 2021 to excess tax benefits from non-qualified stock options exercised during the period, research and development credits, and foreign derived intangibles income deduction (FDII). Deferred taxes recognize the impact of temporary differences between the amounts of the assets and liabilities recorded for financial statement purposes and these amounts measured in accordance with tax laws. The Company’s realization of deferred tax temporary differences is contingent upon future taxable earnings. The Company reviewed its deferred tax asset for expected utilization using a “more likely than not” June 30, 2022 September 30, 2021 not As of June 30, 2022, not not 12

Note 12 - Leases

Note 12 - Leases	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	Note 12. The Company leases an 85,000 square foot facility at 7050 ten two February 28, 2025 not not In July 2021, March 2022. two not not On November 19, 2021, five March 2022 February 28, 2027, five not not second 2022. Right-of-use lease assets and lease liabilities are recognized as of the commencement date based on the present value of the remaining lease payments over the lease term which includes renewal periods the Company is reasonably certain to exercise. The Company’s leases do not Operating lease expense included within cost of goods sold and selling, general and administrative expense was as follows for the three nine Operating lease expense within: Three Months Ended June 30, Nine Months Ended June 30, (in thousands) 2022 2021 2022 2021 Cost of sales $ 797 $ 242 $ 1,521 $ 748 Selling, general and administrative 54 51 166 162 Total lease expense $ 851 $ 293 $ 1,687 $ 910 Future maturities of lease liabilities were as follows as of June 30, 2022 ( FY2022 (Remaining) $ 778 FY2023 3,158 FY2024 3,233 FY2025 2,997 FY2026 2,844 Thereafter 1,196 Total lease payments 14,206 Less: Interest (951 ) Present value of lease liabilities $ 13,255 The weighted average term and weighted average discount rate for the Company’s leases as of June 30, 2022 June 30, 2021. three nine June 30, 2022, three nine June 30, 2021.

Note 13 - Line of Credit

Note 13 - Line of Credit	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 13. On April 27, 2022, April 27, 2025 one not not 1 not 1 twelve 12 June 30, 2022, no 14.

Note 14 - Subsequent Events

Note 14 - Subsequent Events	9 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	Note 14. On July 26, 2022, May 17, 2022. €7.9 €7.6 805 - Business Combinations

Note 2 - Net Income Per Share (

Note 2 - Net Income Per Share (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended June 30, Nine Months Ended June 30, (In thousands, except for share data 2022 2021 2022 2021 Net income $ 12,745 $ 6,098 $ 32,370 $ 12,901 Weighted average common shares 13,772,269 13,732,913 13,760,950 13,718,394 Dilutive potential common shares 127,429 79,597 139,069 44,503 Weighted average dilutive common shares outstanding 13,899,698 13,812,510 13,900,019 13,762,897 Net income per common share: Basic $ 0.93 $ 0.44 $ 2.35 $ 0.94 Diluted $ 0.92 $ 0.44 $ 2.33 $ 0.94

Note 3 - Investments (Tables)

Note 3 - Investments (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]	June 30, 2022 (In thousands) Cost Unrealized Gains Unrealized Losses Fair Value Short-Term Certificates of deposit 3,962 1 69 3,894 Investment securities – short-term $ 3,962 $ 1 $ 69 $ 3,894 Long-Term U.S treasury securities $ 16,167 $ - $ 825 $ 15,342 Certificates of deposit 10,000 1 348 9,652 Investment securities – long-term $ 26,167 $ 1 $ 1,173 $ 24,994
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]	In Unrealized Loss Position For Less Than 12 Months In Unrealized Loss Position For Greater Than 12 Months (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S treasury securities $ 15,342 $ 825 $ - $ - Certificates of deposit 9,637 267 3,569 151 Investment securities $ 24,979 $ 1,092 $ 3,569 $ 151

Note 4 - Fair Value Measureme_2

Note 4 - Fair Value Measurements (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	Fair Value Measurements at June 30, 2022 (In thousands) Total Level 1 Level 2 Level 3 Investment securities: U.S treasury securities $ 15,342 $ - $ 15,342 $ - Certificates of deposit 13,546 - 13,546 - Total investment securities $ 28,888 $ - $ 28,888 $ -

Note 5 - Other Comprehensive _2

Note 5 - Other Comprehensive Loss (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Three Months Ended June 30, 2022 (In thousands) Before Tax Tax Effect Net of Tax Amount Unrealized losses on available-for-sale securities $ (309 ) $ (74 ) $ (235 ) Other comprehensive loss $ (309 ) $ (74 ) $ (235 ) Nine Months Ended June 30, 2022 (In thousands) Before Tax Tax Effect Net of Tax Amount Unrealized losses on available-for-sale securities $ (1,241 ) $ (281 ) $ (960 ) Other comprehensive loss $ (1,241 ) $ (281 ) $ (960 )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	(In thousands) Available-for-Sale Securities Accumulated Other Comprehensive Loss Balances at September 30, 2021 $ - $ - Other comprehensive loss for the nine months ended June 30, 2022 (960 ) (960 ) Balances at June 30, 2022 $ (960 ) $ (960 )

Note 6 - Stock-based Compensa_2

Note 6 - Stock-based Compensation (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Nine months ended June 30, 2022 Dividend yield 0 % Expected volatility 52.02 % Risk-free interest rate 0.97 % Expected life (years) 3.5 Vesting period (years) 3
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	Number of options Weighted average exercise price Outstanding as of September 30, 2021 301,514 $ 16.25 Granted 62,730 66.48 Exercised (20,169 ) 13.70 Forfeited or Expired (2,084 ) 19.94 Outstanding as of June 30, 2022 341,991 $ 25.59
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Number of shares Weighted average grant date fair value Unvested shares as of September 30, 2021 108,839 $ 17.14 Granted 29,512 65.90 Vested (14,384 ) 25.02 Forfeited (2,749 ) 16.84 Unvested as of June 30, 2022 121,218 $ 28.08

Note 7 - Revenue (Tables)

Note 7 - Revenue (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended June 30, Nine Months Ended June 30, (In thousands) 2022 2021 2022 2021 United States $ 68,788 $ 35,810 $ 170,010 $ 89,586 All other countries 2,462 2,925 5,844 5,933 Total Net Sales $ 71,250 $ 38,735 $ 175,854 $ 95,519 Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Broadband service providers 99 % 98 % 99 % 98 % Legacy customers 1 % 2 % 1 % 2 % Total Net Sales 100 % 100 % 100 % 100 %

Note 8 - Inventories (Tables)

Note 8 - Inventories (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Schedule of Inventory, Current [Table Text Block]	(In thousands) June 30, 2022 September 30, 2021 Raw materials $ 58,456 $ 23,072 Work-in-process 6,437 2,482 Finished goods 6,131 3,361 Inventories, gross 71,023 28,915 Inventory reserve (1,683 ) (1,391 ) Inventories, net $ 69,341 $ 27,524

Note 12 - Leases (Tables)

Note 12 - Leases (Tables)	9 Months Ended
	Jun. 30, 2022
Notes Tables
Lessee, Operating Lease Expense [Table Text Block]	Operating lease expense within: Three Months Ended June 30, Nine Months Ended June 30, (in thousands) 2022 2021 2022 2021 Cost of sales $ 797 $ 242 $ 1,521 $ 748 Selling, general and administrative 54 51 166 162 Total lease expense $ 851 $ 293 $ 1,687 $ 910
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	FY2022 (Remaining) $ 778 FY2023 3,158 FY2024 3,233 FY2025 2,997 FY2026 2,844 Thereafter 1,196 Total lease payments 14,206 Less: Interest (951 ) Present value of lease liabilities $ 13,255

Note 2 - Net Income Per Share -

Note 2 - Net Income Per Share - Weighted Average Common Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 12,745	$ 6,098	$ 32,370	$ 12,901
Weighted average common shares (in shares)	13,772,269	13,732,913	13,760,950	13,718,394
Dilutive potential common shares (in shares)	127,429	79,597	139,069	44,503
Weighted average dilutive common shares outstanding (in shares)	13,899,698	13,812,510	13,900,019	13,762,897
Basic (in dollars per share)	$ 0.93	$ 0.44	$ 2.35	$ 0.94
Diluted (in dollars per share)	$ 0.92	$ 0.44	$ 2.33	$ 0.94

Note 3 - Investments (Details T

Note 3 - Investments (Details Textual) $ in Thousands	3 Months Ended
	Jun. 30, 2022 USD ($)
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	60
Debt Securities, Available for Sale, Other than temporary impairment	$ 0

Note 3 - Investments - Availabl

Note 3 - Investments - Available-for-sale Investments (Details)	Jun. 30, 2022 USD ($)
Fair value	$ 28,888
Short-term Investment [Member]
Gross unrealized gains	1,000
Gross unrealized losses	69,000
Long-term Investment [Member]
Gross unrealized gains	1,000
Gross unrealized losses	1,173,000
Short-term Certificates of Deposit [Member]
Amortized cost	3,962,000
Gross unrealized gains	1,000
Gross unrealized losses	69,000
Fair value	3,894,000
Short-term Investment [Member]
Amortized cost	3,962,000
Fair value	3,894,000
US Treasury Securities [Member]
Amortized cost	16,167,000
Gross unrealized gains	0
Gross unrealized losses	825,000
Fair value	15,342,000
Long-term Certificates of Deposit [Member]
Amortized cost	10,000,000
Gross unrealized gains	1,000
Gross unrealized losses	348,000
Fair value	9,652,000
Long-term Investment [Member]
Amortized cost	26,167,000
Fair value	$ 24,994,000

Note 3 - Investments - Securiti

Note 3 - Investments - Securities in a Continuous Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Less than 12 months, fair value	$ 24,979
Less than 12 months, gross unrealized losses	1,092
12 months or greater, fair value	3,569
12 months or greater, gross unrealized losses	151
US Treasury Securities [Member]
Less than 12 months, fair value	15,342
Less than 12 months, gross unrealized losses	825
12 months or greater, fair value	0
12 months or greater, gross unrealized losses	0
Certificates of Deposit [Member]
Less than 12 months, fair value	9,637
Less than 12 months, gross unrealized losses	267
12 months or greater, fair value	3,569
12 months or greater, gross unrealized losses	$ 151

Note 4 - Fair Value Measureme_3

Note 4 - Fair Value Measurements (Details Textual) - USD ($)	Jun. 30, 2022	Sep. 30, 2021
Debt Securities, Available-for-Sale, Total	$ 28,888
Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale, Total	$ 0	$ 0

Note 4 - Fair Value Measureme_4

Note 4 - Fair Value Measurements - Fair Value Measurements (Details) - USD ($)	Jun. 30, 2022	Sep. 30, 2021
Fair value	$ 28,888
Fair Value, Inputs, Level 1 [Member]
Fair value	0
Fair Value, Inputs, Level 2 [Member]
Fair value	28,888
Fair Value, Inputs, Level 3 [Member]
Fair value	0	$ 0
US Treasury Securities [Member]
Fair value	15,342,000
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	0
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	15,342,000
US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0
Certificates of Deposit [Member]
Fair value	13,546,000
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	0
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	13,546,000
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	$ 0

Note 5 - Other Comprehensive In

Note 5 - Other Comprehensive Income (Loss) - Changes in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Unrealized losses on available-for-sale securities before tax	$ (309)	$ 0	$ (1,241)	$ 0
Unrealized losses on available-for-sale securities	(74)		(281)
Unrealized losses on available-for-sale securities net of tax	(235)		(960)
Other comprehensive loss before tax	(309)	0	(1,241)	0
Other comprehensive loss	(74)	0	(281)	0
Other comprehensive loss net of tax	$ (235)	$ 0	$ (960)	$ 0

Note 5 - Other Comprehensive _3

Note 5 - Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Balances at September 30, 2021	$ 123,429	$ 89,848	$ 103,825	$ 82,754
Other comprehensive loss for the nine months ended June 30, 2022	(235)	0	(960)	0
Balances at June 30, 2022	136,774	96,494	136,774	96,494
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balances at September 30, 2021			0
Other comprehensive loss for the nine months ended June 30, 2022			(960)
Balances at June 30, 2022	(960)		(960)
AOCI Attributable to Parent [Member]
Balances at September 30, 2021	(725)	0	0	0
Other comprehensive loss for the nine months ended June 30, 2022			(960)
Balances at June 30, 2022	$ (960)	$ 0	$ (960)	$ 0

Note 6 - Stock-based Compensa_3

Note 6 - Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-Based Payment Arrangement, Expense	$ 638,000	$ 343,055			$ 1,647,000	$ 966,290
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	4,020,000		$ 4,020,000		$ 4,020,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)					62,730	105,089
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)					5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					3 years	3 years
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)					$ 66.48	$ 23.74
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)					1 year 10 months 28 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value	$ 6,824,000		$ 6,824,000		$ 6,824,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Market Price Percentage, Offering Date					85%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)			5,605	7,678
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price (in dollars per share)			$ 52.66	$ 32.43
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	181,590		181,590		181,590
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					3 years
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					5 years
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					29,512
Restricted Stock [Member] | Stock Compensation Plan 2007 [Member] | Share-Based Payment Arrangement, Nonemployee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					1 year
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					3,118
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share)					$ 64.11
Restricted Stock [Member] | Stock Compensation Plan 2007 [Member] | Share-Based Payment Arrangement, Nonemployee [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					1 year	1 year
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	318				2,758	2,120
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share)	$ 62.77				$ 63.35	$ 32.41
Restricted Stock [Member] | Stock Compensation Plan 2007 [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					3 years	3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					23,318	37,687
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share)					$ 66.48	$ 23.74
Restricted Stock [Member] | Minimum [Member] | Stock Compensation Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					1 year
Restricted Stock [Member] | Maximum [Member] | Stock Compensation Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					10 years
Selling, General and Administrative Expenses [Member]
Share-Based Payment Arrangement, Expense	$ 606,000	328,710			$ 1,552,000	$ 923,256
Cost of Sales [Member]
Share-Based Payment Arrangement, Expense	$ 32,000	$ 14,345			$ 95,000	$ 43,034

Note 6 - Stock-based Compensa_4

Note 6 - Stock-based Compensation - Valuation Assumptions (Details)	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Dividend yield	0%
Expected volatility	52.02%
Risk-free interest rate	0.97%
Expected life (years) (Year)	3 years 6 months
Vesting period (years) (Year)	3 years	3 years

Note 6 - Stock-based Compensa_5

Note 6 - Stock-based Compensation - Option Transaction Summary (Details) - $ / shares	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Options, outstanding (in shares)	301,514
Weighted-average exercise price, outstanding (in dollars per share)	$ 16.25
Granted (in shares)	62,730	105,089
Weighted-average exercise price, Granted (in dollars per share)	$ 66.48	$ 23.74
Exercised (in shares)	(20,169)
Weighted-average exercise price, Exercised (in dollars per share)	$ 13.70
Forfeited or Expired (in shares)	(2,084)
Weighted-average exercise price, Forfeited or Expired (in dollars per share)	$ 19.94
Options, outstanding (in shares)	341,991
Weighted-average exercise price, outstanding (in dollars per share)	$ 25.59

Note 6 - Stock-based Compensa_6

Note 6 - Stock-based Compensation - Restricted Stock Transactions (Details) - Restricted Stock [Member]	9 Months Ended
	Jun. 30, 2022 $ / shares shares
Balance, unvested shares (in shares) | shares	108,839
Balance, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 17.14
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares	29,512
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 65.90
Vested (in shares) | shares	(14,384)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 25.02
Forfeited (in shares) | shares	(2,749)
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 16.84
Balance, unvested shares (in shares) | shares	121,218
Balance, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 28.08

Note 7 - Revenue (Details Textu

Note 7 - Revenue (Details Textual) - USD ($)	Jun. 30, 2022	Sep. 30, 2021
Accounts Receivable, Allowance for Credit Loss, Current	$ 79,000	$ 79,000

Note 7 - Revenue - Disaggregati

Note 7 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total Net Sales	$ 71,250	$ 38,735	$ 175,854	$ 95,519
Percent of net sales	100%	100%	100%	100%
Broadband Service Providers [Member]
Percent of net sales	99%	98%	99%	98%
Legacy Customers [Member]
Percent of net sales	1%	2%	1%	2%
UNITED STATES
Total Net Sales	$ 68,788	$ 35,810	$ 170,010	$ 89,586
Non-US [Member]
Total Net Sales	$ 2,462	$ 2,925	$ 5,844	$ 5,933

Note 8 - Inventories - Componen

Note 8 - Inventories - Components of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Raw materials	$ 58,456	$ 23,072
Work-in-process	6,437	2,482
Finished goods	6,131	3,361
Inventories, gross	71,023	28,915
Inventory reserve	(1,683)	(1,391)
Inventories, net	$ 69,341	$ 27,524

Note 9 - Major Customer Conce_2

Note 9 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021
Revenue Benchmark [Member] | Customer A [Member]
Concentration Risk, Percentage	18%	15%	20%
Revenue Benchmark [Member] | Customer B [Member]
Concentration Risk, Percentage	11%
Revenue Benchmark [Member] | Customer C [Member]
Concentration Risk, Percentage	12%		11%
Accounts Receivable [Member] | Customer A [Member]
Concentration Risk, Percentage		13%
Accounts Receivable [Member] | Customer D [Member]
Concentration Risk, Percentage		11%
Accounts Receivable [Member] | Customer E [Member]
Concentration Risk, Percentage				16%

Note 10 - Goodwill and Intang_2

Note 10 - Goodwill and Intangibles (Details Textual) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Goodwill, Impairment Loss	$ 0	$ 0
Number of Patents Granted	31
Impairment of Intangible Assets (Excluding Goodwill), Total	$ 0	$ 0
Patents [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	20 years

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Expense (Benefit), Total	$ 3,884,000	$ 1,725,000	$ 9,480,000	$ 3,344,000
Effective Income Tax Rate Reconciliation, Percent, Total	23.40%	22.10%	22.70%	20.60%
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0

Note 12 - Leases (Details Textu

Note 12 - Leases (Details Textual)		3 Months Ended		9 Months Ended
	Jul. 31, 2021 USD ($) ft²	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Nov. 19, 2021 ft²
Operating Lease, Weighted Average Remaining Lease Term (Year)		4 years 5 months 19 days	3 years 1 month 2 days	4 years 5 months 19 days	3 years 1 month 2 days
Operating Lease, Weighted Average Discount Rate, Percent		3.05%	3.41%	3.05%	3.41%
Operating Lease, Payments | $		$ 617,000	$ 243,000	$ 1,167,000	$ 723,000
7050 Winnetka Avenue North, Brooklyn Park, Minnesota [Member]
Area of Real Estate Property (Square Foot)		85,000		85,000
Lessee, Operating Lease, Term of Contract (Year)		10 years 2 months 1 day		10 years 2 months 1 day
Tijuana, Mexico 3 [Member]
Area of Real Estate Property (Square Foot)	318,000
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	7 years
Lessee, Operating Lease, Number of Options to Renew	2
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term (Year)	5 years
Operating Lease, Monthly Payment | $	$ 162,000
Operating Lease, Payments, Increase, Percentage	2%
Tijuana, Mexico 3 [Member] | Lease Mandatory Contractual Term [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	5 years
Brooklyn Part, MN [Member]
Area of Real Estate Property (Square Foot)						105,000
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)						5 years
Lessee, Operating Lease, Number of Options to Renew						5

Note 12 - Leases - Operating Le

Note 12 - Leases - Operating Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total lease expense	$ 851	$ 293	$ 1,687	$ 910
Cost of Sales [Member]
Total lease expense	797	242	1,521	748
Selling, General and Administrative Expenses [Member]
Total lease expense	$ 54	$ 51	$ 166	$ 162

Note 12 - Leases - Maturities o

Note 12 - Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Jun. 30, 2022 USD ($)
FY2022 (Remaining)	$ 778
FY2023	3,158
FY2024	3,233
FY2025	2,997
FY2026	2,844
Thereafter	1,196
Total lease payments	14,206
Less: Interest	(951)
Present value of lease liabilities	$ 13,255

Note 13 - Line of Credit (Detai

Note 13 - Line of Credit (Details Textual) - Revolving Credit Facility [Member] - Loan and Security Agreement With Bremer Bank, National Association [Member] $ in Millions	Apr. 27, 2022 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 40
Debt Instrument, Minimum Interest Rate Required	1.80%
Debt Instrument, Covenant, Minimum Debt Service Coverage Ratio	1.20
Debt Instrument, Covenant, Maximum Debt to Cash Flow Ratio	2
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.85%

Note 14 - Subsequent Events (De

Note 14 - Subsequent Events (Details Textual) - Jul. 26, 2022 - Subsequent Event [Member] - Nestor Cables Oy [Member] € in Millions, $ in Millions	USD ($)	EUR (€)
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		€ 7.9
Business Combination, Consideration Transferred, Liabilities Incurred		€ 7.6
Revolving Credit Facility [Member]
Proceeds from Lines of Credit, Total | $	$ 16.7