ADDvantage Technologies (AEYGQ) 10-Q 14 May 19 2019 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document Information [Line Items]
Entity Registrant Name	ADDVANTAGE TECHNOLOGIES GROUP INC
Entity Central Index Key	0000874292
Trading Symbol	aey
Current Fiscal Year End Date	--09-30
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		10,361,292
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2019	Sep. 30, 2018
Assets
Cash and cash equivalents	$ 1,371,501	$ 3,129,280
Restricted cash	106,447
Accounts receivable, net of allowance for doubtful accounts of $150,000	6,727,126	4,400,868
Unbilled revenue	1,414,992
Income tax receivable	108,746	178,766
Inventories, net of allowance for excess and obsolete inventory of $4,850,000 and $4,965,000, respectively	19,404,567	18,888,042
Prepaid expenses	772,621	264,757
Other current assets	258,209
Assets held for sale		3,666,753
Total current assets	30,164,209	30,528,466
Property and equipment, at cost:
Land and buildings	1,006,163	2,208,676
Machinery and equipment	5,259,708	3,884,859
Leasehold improvements	190,984	200,617
Total property and equipment, at cost	6,456,855	6,294,152
Less: Accumulated depreciation	(3,992,053)	(4,276,024)
Net property and equipment	2,464,802	2,018,128
Investment in and loans to equity method investee		49,000
Intangibles, net of accumulated amortization	6,548,748	6,844,398
Goodwill	4,836,472	4,820,185
Other assets	217,461	134,443
Total assets	44,231,692	44,394,620
Current liabilities:
Accounts payable	6,612,708	4,657,188
Accrued expenses	1,596,386	1,150,010
Notes payable – current portion	750,000	2,594,185
Deferred gain – current portion	194,152
Other current liabilities	739,887	664,374
Total current liabilities	9,893,133	9,065,757
Deferred gain, less current portion	1,701,243
Other liabilities	228,820	801,612
Total liabilities	11,823,196	9,867,369
Shareholders’ equity:
Common stock, $.01 par value; 30,000,000 shares authorized; 10,861,950 and 10,806,803 shares issued, respectively; 10,361,292 and 10,306,145 shares outstanding, respectively	108,620	108,068
Paid in capital	(4,462,806)	(4,598,343)
Retained earnings	37,762,696	40,017,540
Total shareholders’ equity before treasury stock	33,408,510	35,527,265
Less: Treasury stock, 500,658 shares, at cost	(1,000,014)	(1,000,014)
Total shareholders’ equity	32,408,496	34,527,251
Total liabilities and shareholders’ equity	$ 44,231,692	$ 44,394,620

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Mar. 31, 2019	Sep. 30, 2018
Accounts receivable, allowance for doubtful accounts	$ 150,000	$ 150,000
Inventories, allowance for excess and obsolete inventory	$ 4,850,000	$ 4,965,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	10,861,950	10,806,803
Common stock, shares outstanding (in shares)	10,361,292	10,306,145
Treasury stock, shares (in shares)	500,658	500,658

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Sales	$ 17,273,103	$ 11,649,528	$ 28,545,389	$ 23,934,293
Cost of sales	13,709,089	8,304,463	22,139,813	17,208,073
Gross profit	3,564,014	3,345,065	6,405,576	6,726,220
Operating, selling, general and administrative expenses	4,767,843	3,429,282	8,564,523	7,076,105
Loss from operations	(1,203,829)	(84,217)	(2,158,947)	(349,885)
Other expense:
Income (loss) from equity method investment	55,000	(258,558)	55,000	(258,558)
Other expense	(43,259)		(43,259)
Interest expense	(19,775)	(45,922)	(44,638)	(142,016)
Total other expense, net	(8,034)	(304,480)	(32,897)	(400,574)
Loss before income taxes	(1,211,863)	(388,697)	(2,191,844)	(750,459)
Provision (benefit) for income taxes	4,000	(129,000)	63,000	216,000
Net loss	$ (1,215,863)	$ (259,697)	$ (2,254,844)	$ (966,459)
Loss per share:
Basic (in dollars per share)	$ (0.12)	$ (0.03)	$ (0.22)	$ (0.09)
Diluted (in dollars per share)	$ (0.12)	$ (0.03)	$ (0.22)	$ (0.09)
Shares used in per share calculation:
Basic (in shares)	10,361,292	10,252,712	10,361,292	10,239,353
Diluted (in shares)	10,361,292	10,252,712	10,361,292	10,239,353

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Sep. 30, 2017	10,726,653
Balance at Sep. 30, 2017	$ 107,267	$ (4,746,466)	$ 47,337,396	$ (1,000,014)	$ 41,698,183
Net income (loss)			(706,762)		(706,762)
Share based compensation expense		12,328			12,328
Balance (in shares) at Dec. 31, 2017	10,726,653
Balance at Dec. 31, 2017	$ 107,267	(4,734,138)	46,630,634	(1,000,014)	41,003,749
Balance (in shares) at Sep. 30, 2017	10,726,653
Balance at Sep. 30, 2017	$ 107,267	(4,746,466)	47,337,396	(1,000,014)	41,698,183
Net income (loss)					(966,459)
Balance (in shares) at Mar. 31, 2018	10,806,803
Balance at Mar. 31, 2018	$ 108,068	(4,619,408)	46,370,937	(1,000,014)	40,859,583
Balance (in shares) at Dec. 31, 2017	10,726,653
Balance at Dec. 31, 2017	$ 107,267	(4,734,138)	46,630,634	(1,000,014)	41,003,749
Net income (loss)			(259,697)		(259,697)
Restricted stock issuance (in shares)	80,150
Restricted stock issuance	$ 801	104,199			105,000
Share based compensation expense		10,531			10,531
Balance (in shares) at Mar. 31, 2018	10,806,803
Balance at Mar. 31, 2018	$ 108,068	(4,619,408)	46,370,937	(1,000,014)	40,859,583
Balance (in shares) at Sep. 30, 2018	10,806,803
Balance at Sep. 30, 2018	$ 108,068	(4,598,343)	40,017,540	(1,000,014)	34,527,251
Net income (loss)			(1,038,981)		(1,038,981)
Restricted stock issuance (in shares)	55,147
Restricted stock issuance	$ 552	74,448			75,000
Share based compensation expense		28,070			28,070
Balance (in shares) at Dec. 31, 2018	10,861,950
Balance at Dec. 31, 2018	$ 108,620	(4,495,825)	38,978,559	(1,000,014)	33,591,340
Balance (in shares) at Sep. 30, 2018	10,806,803
Balance at Sep. 30, 2018	$ 108,068	(4,598,343)	40,017,540	(1,000,014)	34,527,251
Net income (loss)					(2,254,844)
Balance (in shares) at Mar. 31, 2019	10,861,950
Balance at Mar. 31, 2019	$ 108,620	(4,462,806)	37,762,696	(1,000,014)	32,408,496
Balance (in shares) at Dec. 31, 2018	10,861,950
Balance at Dec. 31, 2018	$ 108,620	(4,495,825)	38,978,559	(1,000,014)	33,591,340
Net income (loss)			(1,215,863)		(1,215,863)
Share based compensation expense		33,019			33,019
Balance (in shares) at Mar. 31, 2019	10,861,950
Balance at Mar. 31, 2019	$ 108,620	$ (4,462,806)	$ 37,762,696	$ (1,000,014)	$ 32,408,496

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net loss	$ (2,254,844)	$ (966,459)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	246,026	197,352
Amortization	539,650	626,622
Provision for excess and obsolete inventories	74,958	60,711
Charge for lower of cost or net realizable value for inventories		27,026
Gain on disposal of property and equipment	(46,048)	(8,762)
Deferred income tax provision		215,000
Share based compensation expense	106,089	75,360
(Gain) loss from equity method investment	(55,000)	258,558
Changes in assets and liabilities:
Accounts receivable	(1,498,120)	328,485
Unbilled revenue	(935,676)
Income tax receivable\payable	70,020	4,859
Inventories	(682,670)	(93,792)
Prepaid expenses	(395,577)	(54,148)
Other assets	(48,260)	2,959
Accounts payable	705,628	982,617
Accrued expenses	(8,674)	(410,396)
Other liabilities	(7,923)	35,679
Net cash provided by (used in) operating activities	(4,190,421)	1,281,671
Investing Activities
Acquisition of net operating assets	(1,264,058)
Loan repayment from (investment in and loans to) equity method investee	104,000	(259,854)
Purchases of property and equipment	(139,668)	(35,138)
Disposals of property and equipment		23,900
Proceeds from sale of real estate	6,350,000
Net cash provided by (used in) investing activities	5,050,274	(271,092)
Financing Activities
Change in revolving line of credit	750,000
Guaranteed payments for acquisition of business	(667,000)	(667,000)
Payments on notes payable	(2,594,185)	(3,429,935)
Net cash used in financing activities	(2,511,185)	(4,096,935)
Net decrease in cash and cash equivalents and restricted cash	(1,651,332)	(3,086,356)
Cash and cash equivalents and restricted cash at beginning of period	3,129,280	3,972,723
Cash and cash equivalents and restricted cash at end of period	1,477,948	886,367
Supplemental cash flow information:
Cash paid for interest	92,939	129,655
Cash paid for income taxes		$ 2,000

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation and Accounting Policies	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 1 Accounting Policies Basis of presentation The consolidated condensed financial statements include the accounts of ADDvantage Technologies Group, Inc. and its subsidiaries, all of which are wholly owned (collectively, the “Company” or “we”). Intercompany balances and transactions have been eliminated in consolidation. The Company’s reportable segments are Wireless Infrastructure Services (“Wireless”), Telecommunications (“Telco”), and Cable Television (“Cable TV”). The accompanying unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial statements and do not not 10 September 30, 2018. Reclassification The Company adopted Accounting Standards Update (“ASU”) 2016 15: 230 October 1, 2018. $667,000 six March 31, 2019. no Recently Issued Accounting Standards In February 2016, 2016 02: 842 twelve December 15, 2018 2016 02 not $6.7 In June 2016, 2016 13: 326 2016 13 December 15, 2019, may December 15, 2018,

Note 2 - Revenue Recognition

Note 2 - Revenue Recognition	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	Note 2 On October 1, 2018, 2014 09, 606 no not The Company acquired the net assets of Fulton Technologies, Inc. (“Fulton”) and Mill City Communications, Inc. (“Mill City”), wireless infrastructure services businesses, on January 4, 2019 ( 3 three seven The amount of revenue recognized reflects the consideration to which the Company expects to be entitled to receive in exchange for its products, repair services or wireless infrastructure services. The following steps are applied in determining the amount and timing of revenue recognition: 1. Identification of a contract with a customer is a sales arrangement involving a purchase order issued by the customer stating the goods or services to be transferred. Payment terms are generally due in net 30 not 2. Identification of performance obligations in the sales arrangement which is predominantly the promise to transfer goods, repair services, recycled items or wireless infrastructure services to the customer. 3. Determination of the transaction price which is specified in the purchase order based on product or services pricing negotiated between the Company and the customer. Wireless infrastructure services transaction prices are based on the Master Service Agreement contracts between the Company and the wireless customers. 4. Allocation of the transaction price to performance obligations. Substantially all the contracts are single performance obligations and the allocated purchase price is the transaction price. 5. Recognition of revenue occurs upon the satisfaction of the performance obligation and transfer of control. Transfer of control by the Telco and Cable TV segments generally occurs at the point the Company ships the sold or repaired product from its warehouse locations. Transfer of control for the Wireless segment generally occurs over time as the Company installs or decommissions the equipment on the cell towers or performs other services. To measure progress towards completion on performance obligations for which revenue is recognized over time the Company utilizes an input method based upon a ratio of direct labor costs incurred to date to management’s estimate of the total labor costs to be incurred on each contract. The Company has established the systems and procedures to develop the estimates required to account for performance obligations over time. These procedures include monthly review by management of costs incurred, progress towards completion, changes in estimates of costs yet to be incurred and execution by subcontractors. The Company’s principal revenues are from Wireless services, sales of Telco and Cable TV equipment, Telco recycled equipment, and Cable TV repair services. Sales are primarily to customers in the United States. International sales are made by the Telco and Cable TV segments to customers in Central America, South America and, to a substantially lesser extent, other international regions that utilize the same technology which totaled approximately $1.8 $3.7 six March 31, 2019 2018, The Company’s customers include wireless carriers, wireless equipment providers, multiple system operators, resellers and direct sales to end-user customers. Sales to the Company’s largest customer totaled approximately 7% Our revenues by type were as follows: Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Wireless services revenue $ 4,217,924 $ ‒ $ 4,217,924 $ ‒ Equipment sales: Wireless ‒ ‒ ‒ ‒ Telco 8,282,486 6,845,571 14,892,128 12,536,891 Cable TV 3,949,929 4,130,486 8,002,068 9,244,777 Intersegment (3,905 ) (2,130 ) (44,147 ) (2,310 ) Telco recycle revenue 393,434 160,989 634,131 928,210 Cable TV repair revenue 433,235 514,612 843,285 1,226,725 Total revenues $ 17,273,103 $ 11,649,528 $ 28,545,389 $ 23,934,293 With the acquisition of Fulton, the timing of revenue recognition results in contract assets and contract liabilities. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, we sometimes receive advances or deposits from our customers before revenue is recognized, resulting in contract liabilities. Contract assets and contract liabilities are included in Unbilled revenue and Accrued expenses, respectively, in the Consolidated Condensed Balance Sheets. At March 31, 2019 $1.4

Note 3 - Acquisition

Note 3 - Acquisition	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 3 – Acquisition Purchase of Net Assets of Fulton Technologies, Inc. and Mill City Communications, Inc. On December 27, 2018, January 4, 2019. The purchase price for the net assets of Fulton and Mill City was $1.3 January 4, 2019, The Company has one may may The following summarizes the preliminary purchase price allocation of the fair value of the assets acquired and the liabilities assumed at January 4, 2019: Assets acquired: (in thousands) Accounts receivable $ 1,307 Prepaid expenses 341 Property and equipment, net 1,201 Intangible assets 244 Goodwill 16 Other assets 35 Total assets acquired 3,144 Liabilities assumed: Accounts payable 1,250 Accrued expenses 455 Capital lease obligation 175 Total liabilities assumed 1,880 Net purchase price $ 1,264 The acquired intangible asset of approximately $0.2

Note 4 - Sale and Leaseback of

Note 4 - Sale and Leaseback of Assets	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Assets Held for Sale [Text Block]	Note 4 – Sale and Leaseback of Assets In October 2018, $5,000,000 November 29, 2018, $1.4 In connection with the sale of the Broken Arrow, Oklahoma facility, Tulsat, which is one ten $528,000 $1.4 In March 2019, $1,350,000. one ten $128,250 $0.6

Note 5 - Disposition of Assets

Note 5 - Disposition of Assets	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Note 5 – Disposition of Assets In December 2018, $10.3 April 2019, May 29, 2019 $3.9 $1.4 4 $6.4 five 6.0%. $3.3 $1.3 $0.6 4

Note 6 - Accounts Receivable Ag

Note 6 - Accounts Receivable Agreements	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Financing Receivables [Text Block]	Note 6 – Ac counts Receivable Agreements The Company’s Wireless segment has entered into various agreements, one third third 90% 10% third 10% March 31, 2019, third $0.1 may $0.9 March 31, 2019. not March 31, 2019 For the six March 31, 2019, $2.9 1.75% 2.0% $43 three six March 31, 2019 The Company accounts for these transactions in accordance with ASC 860, 860" 860

Note 7 - Inventories

Note 7 - Inventories	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 7 – Inventories Inventories at March 31, 2019 September 30, 2018 March 31, 2019 September 30, 2018 New equipment: Cable TV $ 12,247,466 $ 12,594,138 Telco 2,002,539 1,371,545 Refurbished and used equipment: Cable TV 2,791,141 2,981,413 Telco 7,213,421 6,905,946 Allowance for excess and obsolete inventory: Cable TV (4,050,000 ) (4,150,000 ) Telco (800,000 ) (815,000 ) Total inventories $ 19,404,567 $ 18,888,042 New inventory includes products purchased from manufacturers plus “surplus-new”, which are unused products purchased from other distributors or multiple system operators. Refurbished inventory includes factory refurbished, Company refurbished and used products. Generally, the Company does not The Company regularly reviews the Cable TV segment inventory quantities on hand, and an adjustment to cost is recognized when the loss of usefulness of an item or other factors, such as obsolete and excess inventories, indicate that cost will not $0.1 $4.1 March 31, 2019. In the six March 31, 2019 2018, not not $0.8 March 31, 2019.

Note 8 - Intangible Assets

Note 8 - Intangible Assets	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	Note 8 – Intangible Assets As a result of the Fulton and Mill City acquisition, the Company has recorded an additional intangible asset for customer relationships of $0.2 3 March 31, 2019 September 30, 2018 March 31, 2019 Gross Accumulated Amortization Net Intangible assets: Customer relationships – 10 years $ 8,396,000 $ (3,127,589 ) $ 5,268,411 Trade name – 10 years 2,119,000 (860,330 ) 1,258,670 Non-compete agreements – 3 years 374,000 (352,333 ) 21,667 Total intangible assets $ 10,889,000 $ (4,340,252 ) $ 6,548,748 September 30, 2018 Gross Accumulated Amortization Net Intangible assets: Customer relationships – 10 years $ 8,152,000 $ (2,713,890 ) $ 5,438,110 Trade name – 10 years 2,119,000 (754,380 ) 1,364,620 Non-compete agreements – 3 years 374,000 (332,332 ) 41,668 Total intangible assets $ 10,645,000 $ (3,800,602 ) $ 6,844,398

Note 9 - Notes Payable and Line

Note 9 - Notes Payable and Line of Credit	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 9 – Notes Payable and Line of Credit New Credit Agreement In December 2018, $2.5 December 17, 2019. 0.75% 6.25% March 31, 2019), not 1.25 1.0 March 31, 2019, $750,000 – $2.5 80% 25% $2.5 March 31, 2019. Forbearance Agreement On May 31, 2018, Under the forbearance agreement, which is Amendment Ten to the Credit and Term Loan Agreement, Lender agreed to delete the fixed charge ratio covenant from the Credit and Term Loan Agreement and to forbear from exercising its rights and remedies under the Credit and Term Loan Agreement through October 31, 2018 Revolving credit and term loans created under the Credit and Term Loan Agreement were collateralized by inventory, accounts receivable, equipment and fixtures, general intangibles and a mortgage on certain property. Among other financial covenants, the Credit and Term Loan Agreement provided that the Company maintain a leverage ratio (total funded debt to EBITDA) of not 2.50 1.0. The Company had two first $0.6 October 31, 2018, $15,334 30 1.4% 3.66% October 31, 2018). The second $1.5 October 31, 2018, $118,809. 4.40%. During the first 2019, two $2.1 $0.5 Since the Company extinguished all of its outstanding term loans and line of credit outstanding under the forbearance agreement in the first 2019, no Fair Value of Debt The carrying value of the Company’s variable-rate line of credit approximates its fair value since the interest rate fluctuates periodically based on a floating interest rate.

Note 10 - Earnings Per Share

Note 10 - Earnings Per Share	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 10 – Earnings Per Share Basic earnings per share are based on the sum of the average number of common shares outstanding and issuable, restricted and deferred shares. Diluted earnings per share include any dilutive effect of stock options and restricted stock. In computing the diluted weighted average shares, the average share price for the period is used in determining the number of shares assumed to be reacquired under the treasury stock method from the exercise of options. Basic and diluted earnings per share for the six March 31, 2019 2018 Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Net loss attributable to common shareholders $ (1,215,863 ) $ (259,697 ) $ (2,254,844 ) $ (966,459 ) Basic weighted average shares 10,361,292 10,252,712 10,361,292 10,239,353 Effect of dilutive securities: Stock options – – – – Diluted weighted average shares 10,361,292 10,252,712 10,361,292 10,239,353 Loss per common share: Basic $ (0.12 ) $ (0.03 ) $ (0.22 ) $ (0.09 ) Diluted $ (0.12 ) $ (0.03 ) $ (0.22 ) $ (0.09 ) The table below includes information related to stock options that were outstanding at the end of each respective three six March 31, three six March 31, 2019 2018. Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Stock options excluded 620,000 645,000 620,000 645,000 Weighted average exercise price of stock options $ 1.83 $ 2.59 $ 1.83 $ 2.59 Average market price of common stock $ 1.40 $ 1.39 $ 1.37 $ 1.43

Note 11 - Stock-based Compensat

Note 11 - Stock-based Compensation	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	Note 1 1 – Stock-Based Compensation Plan Information The 2015 may not At March 31, 2019, 1,100,415 157,154 Stock Options All share-based payments to employees, including grants of employee stock options, are recognized in the financial statements based on their grant date fair value over the requisite service period. Compensation expense for share-based awards is included in the operating, selling, general and administrative expense section of the Company’s consolidated condensed statements of operations. Stock options are valued at the date of the award, which does not four five ten ten A summary of the status of the Company's stock options at March 31, 2019 three Shares Wtd. Avg. Ex. Price Outstanding at September 30, 2018 290,000 $ 2.40 Granted 330,000 $ 1.33 Exercised – – Expired – – Forfeited ‒ ‒ Outstanding at March 31, 2019 620,000 $ 1.83 Exercisable at March 31, 2019 426,667 $ 2.00 The Company granted 330,000 six March 31, 2019. zero not zero The estimated fair value at date of grant for stock options utilizing the Black-Scholes option valuation model and the assumptions that were used in the Black-Scholes option valuation model for the six March 31, 2019 Six Months Ended March 31, 2019 Estimated fair value of options at grant date $ 132,620 Black-Scholes model assumptions: Average expected life (years) 5 Average expected volatility factor 28 % Average risk-free interest rate 3.0 % Average expected dividends yield – Compensation expense related to unvested stock options recorded for the six March 31, 2019 Six Months Ended March 31, 2019 Fiscal year 2017 grants $ 9,188 Fiscal year 2019 grants $ 51,901 The Company records compensation expense over the vesting term of the related options. At March 31, 2019, not $94,999. Restricted Stock The Company granted restricted stock in October 2018 55,147 20% first first March 2018 80,150 12 12 $105,000, 12

Note 12 - Segment Reporting

Note 12 - Segment Reporting	6 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 1 2 – Segment Reporting The Company is reporting its financial performance based on its external reporting segments: Cable Television, Telecommunications and Wireless Infrastructure Services. These reportable segments are described below. Wireless Infrastruture Services (“ Wireless ”) On January 4, 2019, four 5G. Telecommunications (“Telco”) The Company’s Telco segment sells new and used telecommunications networking equipment, including both central office and customer premise equipment, to its customer base of telecommunications providers, enterprise customers and resellers located primarily in North America. This segment also offers its customers repair and testing services for telecommunications networking equipment. In addition, this segment offers its customers decommissioning services for surplus and obsolete equipment, which it in turn processes through its recycling program. Cable Television (“Cable TV”) The Company’s Cable TV segment sells new, surplus and re-manufactured cable television equipment throughout North America, Central America, South America and, to a substantially lesser extent, other international regions that utilize the same technology. In addition, this segment repairs cable television equipment for various cable companies. The Company evaluates performance and allocates its resources based on operating income. The accounting policies of its reportable segments are the same as those described in the summary of significant accounting policies. Segment assets consist primarily of cash and cash equivalents, accounts receivable, inventory, property and equipment, goodwill and intangible assets. Three Months Ended Six Months Ended March 31, 2019 March 31, 2018 March 31, 2019 March 31, 2018 Sales Wireless $ 4,217,924 $ ‒ $ 4,217,924 $ ‒ Telco 8,675,921 7,006,561 15,526,260 13,465,101 Cable TV 4,383,163 4,645,097 8,845,352 10,471,502 Intercompany (3,905 ) (2,130 ) (44,147 ) (2,310 ) Total sales $ 17,273,103 $ 11,649,528 $ 28,545,389 $ 23,934,293 Gross profit Wireless $ 83,942 $ ‒ $ 83,942 $ ‒ Telco 2,188,094 1,805,683 3,911,483 3,985,711 Cable TV 1,291,978 1,539,382 2,410,151 2,740,509 Total gross profit $ 3,564,014 $ 3,345,065 $ 6,405,576 $ 6,726,220 Income (loss) from operations Wireless $ (1,114,326 ) $ ‒ $ (1,114,326 ) $ ‒ Telco 25,977 (380,370 ) (608,760 ) (457,538 ) Cable TV (115,480 ) 296,153 (435,861 ) 107,653 Total loss from operations $ (1,203,829 ) $ (84,217 ) $ (2,158,947 ) $ (349,885 ) March 31, 2019 September 30, 2018 Segment assets Wireless $ 4,411,887 $ ‒ Telco 23,885,373 22,173,797 Cable TV 13,191,696 18,371,530 Non-allocated 2,742,736 3,849,293 Total assets $ 44,231,692 $ 44,394,620

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of presentation The consolidated condensed financial statements include the accounts of ADDvantage Technologies Group, Inc. and its subsidiaries, all of which are wholly owned (collectively, the “Company” or “we”). Intercompany balances and transactions have been eliminated in consolidation. The Company’s reportable segments are Wireless Infrastructure Services (“Wireless”), Telecommunications (“Telco”), and Cable Television (“Cable TV”). The accompanying unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial statements and do not not 10 September 30, 2018.
Reclassification, Policy [Policy Text Block]	Reclassification The Company adopted Accounting Standards Update (“ASU”) 2016 15: 230 October 1, 2018. $667,000 six March 31, 2019. no
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Standards In February 2016, 2016 02: 842 twelve December 15, 2018 2016 02 not $6.7 In June 2016, 2016 13: 326 2016 13 December 15, 2019, may December 15, 2018,

Note 2 - Revenue Recognition (T

Note 2 - Revenue Recognition (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Wireless services revenue $ 4,217,924 $ ‒ $ 4,217,924 $ ‒ Equipment sales: Wireless ‒ ‒ ‒ ‒ Telco 8,282,486 6,845,571 14,892,128 12,536,891 Cable TV 3,949,929 4,130,486 8,002,068 9,244,777 Intersegment (3,905 ) (2,130 ) (44,147 ) (2,310 ) Telco recycle revenue 393,434 160,989 634,131 928,210 Cable TV repair revenue 433,235 514,612 843,285 1,226,725 Total revenues $ 17,273,103 $ 11,649,528 $ 28,545,389 $ 23,934,293

Note 3 - Acquisition (Tables)

Note 3 - Acquisition (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Assets acquired: (in thousands) Accounts receivable $ 1,307 Prepaid expenses 341 Property and equipment, net 1,201 Intangible assets 244 Goodwill 16 Other assets 35 Total assets acquired 3,144 Liabilities assumed: Accounts payable 1,250 Accrued expenses 455 Capital lease obligation 175 Total liabilities assumed 1,880 Net purchase price $ 1,264

Note 7 - Inventories (Tables)

Note 7 - Inventories (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Inventory, Current [Table Text Block]	March 31, 2019 September 30, 2018 New equipment: Cable TV $ 12,247,466 $ 12,594,138 Telco 2,002,539 1,371,545 Refurbished and used equipment: Cable TV 2,791,141 2,981,413 Telco 7,213,421 6,905,946 Allowance for excess and obsolete inventory: Cable TV (4,050,000 ) (4,150,000 ) Telco (800,000 ) (815,000 ) Total inventories $ 19,404,567 $ 18,888,042

Note 8 - Intangible Assets (Tab

Note 8 - Intangible Assets (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Intangible Assets and Goodwill [Table Text Block]	March 31, 2019 Gross Accumulated Amortization Net Intangible assets: Customer relationships – 10 years $ 8,396,000 $ (3,127,589 ) $ 5,268,411 Trade name – 10 years 2,119,000 (860,330 ) 1,258,670 Non-compete agreements – 3 years 374,000 (352,333 ) 21,667 Total intangible assets $ 10,889,000 $ (4,340,252 ) $ 6,548,748 September 30, 2018 Gross Accumulated Amortization Net Intangible assets: Customer relationships – 10 years $ 8,152,000 $ (2,713,890 ) $ 5,438,110 Trade name – 10 years 2,119,000 (754,380 ) 1,364,620 Non-compete agreements – 3 years 374,000 (332,332 ) 41,668 Total intangible assets $ 10,645,000 $ (3,800,602 ) $ 6,844,398

Note 10 - Earnings Per Share (T

Note 10 - Earnings Per Share (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Net loss attributable to common shareholders $ (1,215,863 ) $ (259,697 ) $ (2,254,844 ) $ (966,459 ) Basic weighted average shares 10,361,292 10,252,712 10,361,292 10,239,353 Effect of dilutive securities: Stock options – – – – Diluted weighted average shares 10,361,292 10,252,712 10,361,292 10,239,353 Loss per common share: Basic $ (0.12 ) $ (0.03 ) $ (0.22 ) $ (0.09 ) Diluted $ (0.12 ) $ (0.03 ) $ (0.22 ) $ (0.09 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended March 31, Six Months Ended March 31, 2019 2018 2019 2018 Stock options excluded 620,000 645,000 620,000 645,000 Weighted average exercise price of stock options $ 1.83 $ 2.59 $ 1.83 $ 2.59 Average market price of common stock $ 1.40 $ 1.39 $ 1.37 $ 1.43

Note 11 - Stock-based Compens_2

Note 11 - Stock-based Compensation (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Shares Wtd. Avg. Ex. Price Outstanding at September 30, 2018 290,000 $ 2.40 Granted 330,000 $ 1.33 Exercised – – Expired – – Forfeited ‒ ‒ Outstanding at March 31, 2019 620,000 $ 1.83 Exercisable at March 31, 2019 426,667 $ 2.00
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Six Months Ended March 31, 2019 Estimated fair value of options at grant date $ 132,620 Black-Scholes model assumptions: Average expected life (years) 5 Average expected volatility factor 28 % Average risk-free interest rate 3.0 % Average expected dividends yield –
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Six Months Ended March 31, 2019 Fiscal year 2017 grants $ 9,188 Fiscal year 2019 grants $ 51,901

Note 12 - Segment Reporting (Ta

Note 12 - Segment Reporting (Tables)	6 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Months Ended Six Months Ended March 31, 2019 March 31, 2018 March 31, 2019 March 31, 2018 Sales Wireless $ 4,217,924 $ ‒ $ 4,217,924 $ ‒ Telco 8,675,921 7,006,561 15,526,260 13,465,101 Cable TV 4,383,163 4,645,097 8,845,352 10,471,502 Intercompany (3,905 ) (2,130 ) (44,147 ) (2,310 ) Total sales $ 17,273,103 $ 11,649,528 $ 28,545,389 $ 23,934,293 Gross profit Wireless $ 83,942 $ ‒ $ 83,942 $ ‒ Telco 2,188,094 1,805,683 3,911,483 3,985,711 Cable TV 1,291,978 1,539,382 2,410,151 2,740,509 Total gross profit $ 3,564,014 $ 3,345,065 $ 6,405,576 $ 6,726,220 Income (loss) from operations Wireless $ (1,114,326 ) $ ‒ $ (1,114,326 ) $ ‒ Telco 25,977 (380,370 ) (608,760 ) (457,538 ) Cable TV (115,480 ) 296,153 (435,861 ) 107,653 Total loss from operations $ (1,203,829 ) $ (84,217 ) $ (2,158,947 ) $ (349,885 ) March 31, 2019 September 30, 2018 Segment assets Wireless $ 4,411,887 $ ‒ Telco 23,885,373 22,173,797 Cable TV 13,191,696 18,371,530 Non-allocated 2,742,736 3,849,293 Total assets $ 44,231,692 $ 44,394,620

Note 1 - Basis of Presentatio_2

Note 1 - Basis of Presentation and Accounting Policies (Details Textual) - USD ($)	6 Months Ended
	Mar. 31, 2019	Oct. 01, 2019
Accounting Standards Update 2016-15 [Member]
Reclassification of Guaranteed Payments for Business Acquisitions from Investing Activities to Financing Activities	$ 667,000
Accounting Standards Update 2016-02 [Member] | Forecast [Member]
Operating Lease, Right-of-Use Asset		$ 6,700,000
Operating Lease, Liability, Total		$ 6,700,000

Note 2 - Revenue Recognition (D

Note 2 - Revenue Recognition (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Revenue from Contract with Customer, Including Assessed Tax	$ 17,273,103	$ 11,649,528	$ 28,545,389	$ 23,934,293
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Concentration Risk, Percentage	7.00%
International Regions Excluding Central America and South America [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 1,400,000		$ 1,800,000	$ 3,700,000

Note 2 - Revenue Recognition -

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Sales	$ 17,273,103	$ 11,649,528	$ 28,545,389	$ 23,934,293
Operating Segments [Member] | Wireless [Member]
Sales	4,217,924		4,217,924
Operating Segments [Member] | Telco [Member]
Sales	8,675,921	7,006,561	15,526,260	13,465,101
Operating Segments [Member] | Cable TV [Member]
Sales	4,383,163	4,645,097	8,845,352	10,471,502
Intersegment Eliminations [Member]
Sales	(3,905)	(2,130)	(44,147)	(2,310)
Wireless Services [Member]
Sales	4,217,924		4,217,924
Equipment Sales [Member] | Operating Segments [Member] | Wireless [Member]
Sales
Equipment Sales [Member] | Operating Segments [Member] | Telco [Member]
Sales	8,282,486	6,845,571	14,892,128	12,536,891
Equipment Sales [Member] | Operating Segments [Member] | Cable TV [Member]
Sales	3,949,929	4,130,486	8,002,068	9,244,777
Equipment Sales [Member] | Intersegment Eliminations [Member]
Sales	(3,905)	(2,130)	(44,147)	(2,310)
Telco [Member]
Sales	393,434	160,989	634,131	928,210
Cable TV [Member]
Sales	$ 433,235	$ 514,612	$ 843,285	$ 1,226,725

Note 3 - Acquisition (Details T

Note 3 - Acquisition (Details Textual) - Fulton and Mill City [Member] $ in Millions	Jan. 04, 2019USD ($)
Business Combination, Consideration Transferred, Total	$ 1.3
Customer Relationships [Member]
Finite-lived Intangible Assets Acquired	$ 0.2

Note 3 - Acquisition - Assets A

Note 3 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($)	Mar. 31, 2019	Jan. 04, 2019	Sep. 30, 2018
Goodwill	$ 4,836,472		$ 4,820,185
Fulton and Mill City [Member]
Accounts receivable		$ 1,307,000
Prepaid expenses		341,000
Property and equipment, net		1,201,000
Intangible assets		244,000
Goodwill		16,000
Other assets		35,000
Total assets acquired		3,144,000
Accounts payable		1,250,000
Accrued expenses		455,000
Capital lease obligation		175,000
Total liabilities assumed		1,880,000
Net purchase price		$ 1,264,000

Note 4 - Sale and Leaseback o_2

Note 4 - Sale and Leaseback of Assets (Details Textual) - USD ($)	Nov. 29, 2018	Sep. 28, 2018	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Proceeds from Sale of Property, Plant, and Equipment, Total					$ 23,900
Proceeds from Sale of Buildings				$ 6,350,000
Chief Technology Officer, Director, and Substantial Shareholder [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 5,000,000
Deferred Gain on Sale of Property	$ 1,400,000
Chief Technology Officer, Director, and Substantial Shareholder [Member] | Cable TV Ten Year Lease With David Chymiak LLC [Member]
Lessee, Operating Lease, Term of Contract			10 years	10 years
Sale Leaseback Transaction, Annual Rental Payments			$ 128,250
Chief Technology Officer, Director, and Substantial Shareholder [Member] | Sedalia, Missouri Building [Member]
Deferred Gain on Sale of Property			600,000	$ 600,000
Proceeds from Sale of Buildings			$ 1,350,000
Chief Technology Officer, Director, and Substantial Shareholder [Member] | Tulsat [Member]
Lessee, Operating Lease, Term of Contract		10 years
Lessee, Operating Lease, Yearly Rent		$ 528,000

Note 5 - Disposition of Assets

Note 5 - Disposition of Assets (Details Textual) - USD ($)	1 Months Ended		6 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Nov. 29, 2018
Proceeds from Sale of Buildings			$ 6,350,000
Chief Technology Officer, Director, and Substantial Shareholder [Member]
Deferred Gain on Sale of Property					$ 1,400,000
Sedalia, Missouri Building [Member] | Chief Technology Officer, Director, and Substantial Shareholder [Member]
Proceeds from Sale of Buildings	$ 1,350,000
Deferred Gain on Sale of Property	$ 600,000		$ 600,000
Cable TV Business Segment [Member]
Disposal Group, Including Discontinued Operation, Consideration		$ 10,300,000
Disposal Group, Including Discontinued Operation, Consideration, Cash		3,900,000
Disposal Group, Including Discontinued Operation, Consideration, Promissory Note		$ 6,400,000
Note Receivable, Term		5 years
Note Receivable, Interest Rate		6.00%
Disposal Group, Including Discontinued Operation, Gain (Loss) on Disposal, Pretax		$ 3,300,000
Deferred Gain on Sale of Property		$ 1,300,000

Note 6 - Accounts Receivable _2

Note 6 - Accounts Receivable Agreements (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Restricted Cash, Total	$ 106,447		$ 106,447
Cost of Goods and Services Sold, Total	$ 13,709,089	$ 8,304,463	$ 22,139,813	$ 17,208,073
Certain Receivables to Unrelated Third-parties [Member]
Accounts Receivable Agreement, Percent of Sold Receivables Advanced	90.00%		90.00%
Accounts Receivable Agreement, Reserve of Sold Receivables	10.00%		10.00%
Restricted Cash, Total	$ 100,000		$ 100,000
Accounts Receivable, after Allowance for Credit Loss, Total	900,000		900,000
Proceeds from Collection of Finance Receivables			2,900,000
Certain Receivables to Unrelated Third-parties [Member] | Other Expense [Member]
Cost of Goods and Services Sold, Total	$ 43,000		$ 43,000
Certain Receivables to Unrelated Third-parties [Member] | Minimum [Member]
Receivables, Cost of Sales, Percent			1.75%
Certain Receivables to Unrelated Third-parties [Member] | Maximum [Member]
Receivables, Cost of Sales, Percent			2.00%

Note 7 - Inventories (Details T

Note 7 - Inventories (Details Textual) - USD ($)	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Inventory Write-down	$ 74,958	$ 60,711
Inventory Valuation Reserves, Ending Balance	4,850,000		$ 4,965,000
Cable TV [Member]
Inventory Write-down	100,000
Inventory Valuation Reserves, Ending Balance	4,050,000		4,150,000
Telco [Member]
Inventory Write-down	0	$ 0
Inventory Valuation Reserves, Ending Balance	$ 800,000		$ 815,000

Note 7 - Inventories - Schedule

Note 7 - Inventories - Schedule of Inventory (Details) - USD ($)	Mar. 31, 2019	Sep. 30, 2018
Inventory Valuation Reserve	$ (4,850,000)	$ (4,965,000)
Inventories, net of allowance for excess and obsolete inventory of $4,850,000 and $4,965,000, respectively	19,404,567	18,888,042
Cable TV [Member]
Inventory Valuation Reserve	(4,050,000)	(4,150,000)
Cable TV [Member] | New Inventory [Member]
Inventory, Gross	12,247,466	12,594,138
Cable TV [Member] | Refurbished and Used Inventory [Member]
Inventory, Gross	2,791,141	2,981,413
Telco [Member]
Inventory Valuation Reserve	(800,000)	(815,000)
Telco [Member] | New Inventory [Member]
Inventory, Gross	2,002,539	1,371,545
Telco [Member] | Refurbished and Used Inventory [Member]
Inventory, Gross	$ 7,213,421	$ 6,905,946

Note 8 - Intangible Assets (Det

Note 8 - Intangible Assets (Details Textual) $ in Millions	Jan. 04, 2019USD ($)
Customer Relationships [Member] | Fulton and Mill City [Member]
Finite-lived Intangible Assets Acquired	$ 0.2

Note 8 - Intangible Assets - Sc

Note 8 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Mar. 31, 2019	Sep. 30, 2018
Gross	$ 10,889,000	$ 10,645,000
Accumulated Amortization	(4,340,252)	(3,800,602)
Net	6,548,748	6,844,398
Customer Relationships [Member]
Gross	8,396,000	8,152,000
Accumulated Amortization	(3,127,589)	(2,713,890)
Net	5,268,411	5,438,110
Trade Names [Member]
Gross	2,119,000	2,119,000
Accumulated Amortization	(860,330)	(754,380)
Net	1,258,670	1,364,620
Noncompete Agreements [Member]
Gross	374,000	374,000
Accumulated Amortization	(352,333)	(332,332)
Net	$ 21,667	$ 41,668

Note 8 - Intangible Assets - _2

Note 8 - Intangible Assets - Schedule of Intangible Assets (Details) (Parentheticals)	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Sep. 30, 2018
Customer Relationships [Member]
Finite-lived intangible asset, useful life (Year)	10 years	10 years
Trade Names [Member]
Finite-lived intangible asset, useful life (Year)	10 years	10 years
Noncompete Agreements [Member]
Finite-lived intangible asset, useful life (Year)	3 years	3 years

Note 9 - Notes Payable and Li_2

Note 9 - Notes Payable and Line of Credit (Details Textual)	1 Months Ended	6 Months Ended	12 Months Ended
	Nov. 30, 2018USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Oct. 31, 2018USD ($)
Number of Term Loans Outstanding		2
Term Loan [Member]
Extinguishment of Debt, Amount	$ 2,100,000
Credit and Term Loan Agreement [Member]
Fixed Charge Leverage Ratio, Maximum Requirement		2.5
Credit and Term Loan Agreement [Member] | Term Loan 1 [Member]
Debt Instrument, Interest Rate, Effective Percentage				3.66%
Loans Payable, Total		$ 600,000
Debt Instrument, Periodic Payment, Principal		15,334
Credit and Term Loan Agreement [Member] | Term Loan 2 [Member]
Loans Payable, Total		1,500,000
Debt Instrument, Periodic Payment, Total		$ 118,809
Debt Instrument, Interest Rate, Stated Percentage		4.40%
Credit and Term Loan Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan 1 [Member]
Debt Instrument, Basis Spread on Variable Rate		1.40%
Revolving Credit Facility [Member] | New Credit Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 2,500,000
Debt Instrument, Interest Rate, Effective Percentage		6.25%
Fixed Charge Leverage Ratio, Maximum Requirement			1.25
Long-term Line of Credit, Total		$ 750,000
Percentage of Qualified Accounts Receivable Used in Determination of Maximum Borrowing Capacity of Line of Credit			80.00%
Percentage of Qualified Inventory Used in Determination of Maximum Borrowing Capacity of Line of Credit			25.00%
Line of Credit Facility, Current Borrowing Capacity		$ 2,500,000
Revolving Credit Facility [Member] | New Credit Agreement [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			0.75%
Revolving Credit Facility [Member] | Credit and Term Loan Agreement [Member]
Line of Credit Facility, Fair Value of Amount Outstanding				$ 500,000

Note 10 - Earnings Per Share -

Note 10 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net loss attributable to common shareholders	$ (1,215,863)	$ (259,697)	$ (2,254,844)	$ (966,459)
Basic weighted average shares (in shares)	10,361,292	10,252,712	10,361,292	10,239,353
Stock options (in shares)
Diluted (in shares)	10,361,292	10,252,712	10,361,292	10,239,353
Basic (in dollars per share)	$ (0.12)	$ (0.03)	$ (0.22)	$ (0.09)
Diluted (in dollars per share)	$ (0.12)	$ (0.03)	$ (0.22)	$ (0.09)

Note 10 - Earnings Per Share _2

Note 10 - Earnings Per Share - Anti-dilutive Securities (Details) - $ / shares	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Stock options excluded (in shares)	620,000	645,000	620,000	645,000
Weighted average exercise price of stock options (in dollars per share)	$ 1.83	$ 2.59	$ 1.83	$ 2.59
Average market price of common stock (in dollars per share)	$ 1.40	$ 1.39	$ 1.37	$ 1.43

Note 11 - Stock-based Compens_3

Note 11 - Stock-based Compensation (Details Textual) - USD ($)	1 Months Ended		6 Months Ended
	Oct. 31, 2018	Mar. 31, 2018	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			330,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 94,999
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Nonqualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			330,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Employees [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Employees [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			5 years
Board Of Directors [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Board of Directors and Officer [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	55,147	80,150
Restricted Stock, Vesting Percentage Per Year	20.00%
Restricted Stock Holding Period	1 year
Fair Value Of Restricted Shares Upon Issuance	$ 105,000
The 2015 Incentive Stock Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance			1,100,415
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			157,154

Note 11 - Stock-based Compens_4

Note 11 - Stock-based Compensation - Summary of the Status of the Company's Stock Options (Details)	6 Months Ended
	Mar. 31, 2019$ / sharesshares
Outstanding (in shares) | shares	290,000
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 2.40
Granted (in shares) | shares	330,000
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 1.33
Exercised (in shares) | shares
Exercised, weighted average exercise price (in dollars per share) | $ / shares
Expired (in shares) | shares
Expired, weighted average exercise price (in dollars per share) | $ / shares
Forfeited (in shares) | shares
Forfeited, weighted average exercise price (in dollars per share) | $ / shares
Outstanding (in shares) | shares	620,000
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 1.83
Exercisable (in shares) | shares	426,667
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 2

Note 11 - Stock-based Compens_5

Note 11 - Stock-based Compensation - Estimated Fair Value of Stock Options (Details) - Share-based Payment Arrangement, Option [Member]	6 Months Ended
	Mar. 31, 2019USD ($)
Estimated fair value of options at grant date	$ 132,620
Average expected life (years) (Year)	5 years
Average expected volatility factor	28.00%
Average risk-free interest rate	3.00%
Average expected dividends yield

Note 11 - Stock-based Compens_6

Note 11 - Stock-based Compensation - Compensation Expense Related to Stock Options (Details) - Share-based Payment Arrangement, Option [Member]	6 Months Ended
	Mar. 31, 2019USD ($)
Fiscal Year 2017 Grants [Member]
Compensation expense	$ 9,188
Fiscal Year 2019 [Member]
Compensation expense	$ 51,901

Note 12 - Segment Reporting - S

Note 12 - Segment Reporting - Segment Reporting Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Sales	$ 17,273,103	$ 11,649,528	$ 28,545,389	$ 23,934,293
Gross profit	3,564,014	3,345,065	6,405,576	6,726,220
Operating income (loss)	(1,203,829)	(84,217)	(2,158,947)	(349,885)
Segment assets	44,231,692		44,231,692		$ 44,394,620
Operating Segments [Member] | Wireless [Member]
Sales	4,217,924		4,217,924
Gross profit	83,942		83,942
Operating income (loss)	(1,114,326)		(1,114,326)
Segment assets	4,411,887		4,411,887
Operating Segments [Member] | Telco [Member]
Sales	8,675,921	7,006,561	15,526,260	13,465,101
Gross profit	2,188,094	1,805,683	3,911,483	3,985,711
Operating income (loss)	25,977	(380,370)	(608,760)	(457,538)
Segment assets	23,885,373		23,885,373		22,173,797
Operating Segments [Member] | Cable TV [Member]
Sales	4,383,163	4,645,097	8,845,352	10,471,502
Gross profit	1,291,978	1,539,382	2,410,151	2,740,509
Operating income (loss)	(115,480)	296,153	(435,861)	107,653
Segment assets	13,191,696		13,191,696		18,371,530
Intersegment Eliminations [Member]
Sales	(3,905)	$ (2,130)	(44,147)	$ (2,310)
Segment Reconciling Items [Member]
Segment assets	$ 2,742,736		$ 2,742,736		$ 3,849,293