Napco Security (NSSC) 10-Q 9 Feb 21 2021 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Dec. 31, 2020	Feb. 08, 2021
Document And Entity Information
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity File Number	0-10004
Entity Registrant Name	NAPCO SECURITY TECHNOLOGIES, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-2277818
Entity Address, Address Line One	333 Bayview Avenue
Entity Address, City or Town	Amityville
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11701
City Area Code	631
Local Phone Number	842-9400
Security Exchange Name	NASDAQ
Entity Central Index Key	0000069633
Current Fiscal Year End Date	--06-30
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	NSSC
Entity Common Stock, Shares Outstanding		18,347,351

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 26,796	$ 18,248
Accounts receivable, net of allowance for doubtful accounts of $196 and $326 at December 31, 2020 and June 30, 2020, respectively, and other reserves	21,223	22,932
Inventories, net	29,383	35,231
Prepaid expenses and other current assets	1,860	2,049
Total Current Assets	79,262	78,460
Inventories - non-current, net	8,653	6,524
Property, plant and equipment, net	7,842	8,088
Intangible assets, net	4,903	5,116
Operating lease asset	7,384	7,395
Other assets	249	255
TOTAL ASSETS	108,293	105,838
CURRENT LIABILITIES
Accounts payable	4,402	6,547
Accrued expenses	5,273	5,744
Accrued salaries and wages	2,114	2,181
Current portion of long-term debt	1,084	1,794
Accrued income taxes	606	1,148
Total Current Liabilities	13,479	17,414
Long term debt, net of current portion	2,820	2,110
Deferred income taxes	30	112
Accrued income taxes	1,257	1,188
Long term operating lease liabilities	7,102	7,113
Total Liabilities	24,688	27,937
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common Stock, par value $0.01 per share; 40,000,000 shares authorized; 21,241,066 shares issued; and 18,347,351 shares outstanding	212	212
Additional paid-in capital	17,954	17,766
Retained earnings	84,960	79,444
Less: Treasury Stock, at cost (2,893,715 shares)	(19,521)	(19,521)
TOTAL STOCKHOLDERS' EQUITY	83,605	77,901
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 108,293	$ 105,838

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
CONDENSED CONSOLIDATED BALANCE SHEETS
Allowance for Doubtful Accounts Receivable	$ 196	$ 326
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	40,000,000	40,000,000
Common Stock, shares issued	21,241,066	21,241,066
Common Stock, shares outstanding	18,347,351	18,347,351
Treasury Stock, shares	2,893,715	2,893,715

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net sales:
Equipment revenues	$ 19,016,000	$ 20,045,000	$ 34,914,000	$ 40,966,000
Service revenues	8,189,000	5,784,000	15,464,000	11,148,000
Total Revenues	27,205,000	25,829,000	50,378,000	52,114,000
Cost of sales:
Equipment related expenses	14,599,000	12,602,000	25,906,000	26,240,000
Service related expenses	1,203,000	1,100,000	2,377,000	2,229,000
Cost of sales	15,802,000	13,702,000	28,283,000	28,469,000
Gross Profit	11,403,000	12,127,000	22,095,000	23,645,000
Research and development	1,884,000	1,823,000	3,773,000	3,572,000
Selling, general, and administrative expenses	5,850,000	6,310,000	11,999,000	12,470,000
Operating expenses	7,734,000	8,133,000	15,772,000	16,042,000
Operating Income	3,669,000	3,994,000	6,323,000	7,603,000
Other expense (income):
Interest expense (income), net	3,000	(9,000)	9,000	(2,000)
Income before Provision for Income Taxes	3,666,000	4,003,000	6,314,000	7,605,000
Provision for Income Taxes	469,000	431,000	798,000	800,000
Net Income	$ 3,197,000	$ 3,572,000	$ 5,516,000	$ 6,805,000
Income per share:
Basic (in dollars per share)	$ 0.17	$ 0.19	$ 0.30	$ 0.37
Diluted (in dollars per share)	$ 0.17	$ 0.19	$ 0.30	$ 0.37
Weighted average number of shares outstanding:
Basic (in shares)	18,347,000	18,478,000	18,347,000	18,478,000
Diluted (in shares)	18,402,000	18,538,000	18,397,000	18,537,000

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY - USD ($)	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Total
Balance at Jun. 30, 2019	$ 212,000	$ 17,103,000	$ (17,067,000)	$ 70,924,000	$ 71,172,000
Balance (in shares) at Jun. 30, 2019	21,227,094		(2,749,310)
Net income	$ 0	0	$ 0	3,233,000	3,233,000
Stock-based compensation expense	0	17,000	0	0	17,000
Balance at Sep. 30, 2019	$ 212,000	17,120,000	$ (17,067,000)	74,157,000	74,422,000
Balance (in shares) at Sep. 30, 2019	21,227,094		(2,749,310)
Balance at Jun. 30, 2019	$ 212,000	17,103,000	$ (17,067,000)	70,924,000	71,172,000
Balance (in shares) at Jun. 30, 2019	21,227,094		(2,749,310)
Net income					6,805,000
Balance at Dec. 31, 2019	$ 212,000	17,428,000	$ (17,067,000)	77,729,000	78,302,000
Balance (in shares) at Dec. 31, 2019	21,227,094		(2,749,310)
Balance at Sep. 30, 2019	$ 212,000	17,120,000	$ (17,067,000)	74,157,000	74,422,000
Balance (in shares) at Sep. 30, 2019	21,227,094		(2,749,310)
Net income				3,572,000	3,572,000
Stock-based compensation expense		308,000			308,000
Balance at Dec. 31, 2019	$ 212,000	17,428,000	$ (17,067,000)	77,729,000	78,302,000
Balance (in shares) at Dec. 31, 2019	21,227,094		(2,749,310)
Balance at Jun. 30, 2020	$ 212,000	17,766,000	$ (19,521,000)	79,444,000	77,901,000
Balance (in shares) at Jun. 30, 2020	21,241,066		(2,893,715)
Net income	$ 0	0	$ 0	2,319,000	2,319,000
Stock-based compensation expense	0	104,000	0	0	104,000
Balance at Sep. 30, 2020	$ 212,000	17,870,000	$ (19,521,000)	81,763,000	80,324,000
Balance (in shares) at Sep. 30, 2020	21,241,066		(2,893,715)
Balance at Jun. 30, 2020	$ 212,000	17,766,000	$ (19,521,000)	79,444,000	77,901,000
Balance (in shares) at Jun. 30, 2020	21,241,066		(2,893,715)
Net income					5,516,000
Balance at Dec. 31, 2020	$ 212,000	17,954,000	$ (19,521,000)	84,960,000	83,605,000
Balance (in shares) at Dec. 31, 2020	21,241,066		(2,893,715)
Balance at Sep. 30, 2020	$ 212,000	17,870,000	$ (19,521,000)	81,763,000	80,324,000
Balance (in shares) at Sep. 30, 2020	21,241,066		(2,893,715)
Net income	$ 0	0	$ 0	3,197,000	3,197,000
Stock-based compensation expense	0	84,000	0	0	84,000
Balance at Dec. 31, 2020	$ 212,000	$ 17,954,000	$ (19,521,000)	$ 84,960,000	$ 83,605,000
Balance (in shares) at Dec. 31, 2020	21,241,066		(2,893,715)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 5,516,000	$ 6,805,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	855,000	744,000
(Recovery of) provision for doubtful accounts	(130,000)	39,000
Deferred income taxes	(82,000)	491,000
Stock-based compensation expense	188,000	325,000
Changes in operating assets and liabilities:
Accounts receivable	1,839,000	2,833,000
Inventories	3,719,000	(7,068,000)
Prepaid expenses and other current assets	189,000	218,000
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes	(3,157,000)	426,000
Net Cash Provided by Operating Activities	8,937,000	4,813,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment	(389,000)	(1,063,000)
Net Cash Used in Investing Activities	(389,000)	(1,063,000)
Net Change in Cash and Cash Equivalents	8,548,000	3,750,000
CASH AND CASH EQUIVALENTS - Beginning	18,248,000	8,028,000
CASH AND CASH EQUIVALENTS - Ending	26,796,000	11,778,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	10,000	18,000
Income taxes paid	$ 1,351,000	$ 734,000

Nature of Business and Summary

Nature of Business and Summary of Significant Accounting Policies	6 Months Ended
	Dec. 31, 2020
Nature of Business and Summary of Significant Accounting Policies
Nature of Business and Summary of Significant Accounting Policies	NOTE 1 - Nature of Business and Summary of Significant Accounting Policies Nature of Business : Napco Security Technologies, Inc. (“NAPCO”, “the Company”, “we”) is one of the leading manufacturers and designers of high-tech electronic security devices, wireless communication services for intrusion and fire alarm systems as well as a leading provider of school safety solutions. We offer a diversified array of security products, encompassing access control systems, door-locking products, intrusion and fire alarm systems and video surveillance products. These products are used for commercial, residential, institutional, industrial and governmental applications, and are sold worldwide principally to independent distributors, dealers and installers of security equipment. We have experienced significant growth in recent years, primarily driven by fast growing recurring service revenues generated from wireless communication services for intrusion and fire alarm systems, as well as our school security products that are designed to meet the increasing needs to enhance school security as a result of on-campus shooting and violence in the U.S. While recurring service revenues have continued to increase during the COVID-19 pandemic, equipment sales were negatively impacted by the economic slowdown associated with this pandemic. The Company's fiscal year begins on July 1 and ends on June 30. Historically, the end users of the Company’s products want to install its products prior to the summer; therefore sales of its products historically peak in the period April 1 through June 30, the Company's fiscal fourth quarter, and are reduced in the period July 1 through September 30, the Company's fiscal first quarter. In addition, demand for our products is affected by the housing and construction markets. Deterioration of the current economic conditions may also affect this trend. Our fourth quarter of fiscal 2020 and the first and second quarters of fiscal 2021 reflected the challenging business environment resulting from the COVID-19 pandemic. The COVID-19 pandemic has caused difficulties for security equipment professionals getting access to both commercial and residential installation sites. We sell our products primarily through distribution to dealers and we are now seeing strong sell-through statistics from several of our largest distributors. Significant Accounting Policies : Principles of Consolidation The consolidated financial statements include the accounts of Napco Security Technologies, Inc. and all of its wholly-owned subsidiaries. All inter-company balances and transactions have been eliminated in consolidation. Accounting Estimates The preparation of financial statements in conformity with Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent gains and losses at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Critical estimates include management's judgments associated with reserves for sales returns and allowances, allowance for doubtful accounts, inventory reserves, valuation of intangible assets and income taxes. Actual results could differ from those estimates. Fair Value of Financial Instruments The methods and assumptions used to estimate the fair value of the following classes of financial instruments were: Current Assets and Current Liabilities - The carrying amount of cash and cash equivalents, certificates of deposits, current receivables and payables and certain other short-term financial instruments approximate their fair value as of December 31, 2020 and June 30, 2020 due to their short-term maturities. Long-term debt and lease liabilities approximate fair value based on prevailing market rates. Cash and Cash Equivalents Cash and cash equivalents include approximately $460,000 of short-term time deposits at December 31, 2020 and June 30, 2020. The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company has cash balances in banks in excess of the maximum amount insured by the FDIC and other international agencies as of December 31, 2020 and June 30, 2020. The Company has not historically experienced any credit losses with balances in excess of FDIC limits. Accounts Receivable Accounts receivable is stated net of the reserves for doubtful accounts of $196,000 as of December 31, 2020 and $326,000 as of June 30, 2020. Our reserves for doubtful accounts are subjective critical estimates that have a direct impact on reported net earnings. These reserves are based upon the evaluation of our accounts receivable aging, specific exposures, sales levels and historical trends. Inventories Inventories are valued at the lower of cost or net realizable value, with cost being determined on the first-in, first-out (FIFO) method. The reported net value of inventory includes finished saleable products, work-in-process and raw materials that will be sold or used in future periods. Inventory costs include raw materials, direct labor and overhead. The Company’s overhead expenses are applied based, in part, upon estimates of the proportion of those expenses that are related to procuring and storing raw materials as compared to the manufacture and assembly of finished products. These proportions, the method of their application, and the resulting overhead included in ending inventory, are based in part on subjective estimates and actual results could differ from those estimates. In addition, the Company records an inventory obsolescence reserve, which represents any excess of the cost of the inventory over its estimated realizable value, based on various product sales projections. This reserve is calculated using an estimated obsolescence percentage applied to the inventory based on age, historical trends, requirements to support forecasted sales, and the ability to find alternate applications of its raw materials and to convert finished product into alternate versions of the same product to better match customer demand. In addition, and as necessary, the Company may establish specific reserves for future known or anticipated events. There is inherent professional judgment and subjectivity made by both production and engineering members of management in determining the estimated obsolescence percentage. The Company also regularly reviews the period over which its inventories will be converted to sales. Any inventories expected to convert to sales beyond 12 months from the balance sheet date are classified as non-current. Property, Plant, and Equipment Property, plant, and equipment are carried at cost less accumulated depreciation. Expenditures for maintenance and repairs are charged to expense as incurred; costs of major renewals and improvements are capitalized. At the time property and equipment are retired or otherwise disposed of, the cost and accumulated depreciation are eliminated from the asset and accumulated depreciation accounts and the profit or loss on such disposition is reflected in income. Depreciation is recorded over the estimated service lives of the related assets using the straight-line method. Amortization of leasehold improvements is calculated by using the straight-line method over the estimated useful life of the asset or lease term, whichever is shorter. Intangible Assets Intangible assets with definite lives are amortized over their useful lives and are reviewed for impairment whenever there is an indication that the carrying amount may not be recovered. The Company’s acquisition of substantially all of the assets and certain liabilities of G. Marks Hardware, Inc. (“Marks”) in August 2008 included intangible assets recorded at fair value on the date of acquisition. The customer relationships are amortized over their estimated useful lives of twenty years. At the acquisition, the Marks trade name was deemed to have an indefinite life. At the conclusion of fiscal 2020, the Company determined that the trade-name was impaired. Accordingly, the Company recorded an impairment charge of $1,852,000 and reclassified the remaining balance of the underlying asset from indefinite-lived to a long-lived asset with a remaining useful life of 20 years as of June 30, 2020. Changes in intangible assets are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ June 30, 2020 ​ Carrying Accumulated Net book Carrying Accumulated Net book ​ ​ value ​ amortization ​ value ​ value ​ amortization ​ value Customer relationships ​ $ 9,800 ​ $ (8,844) ​ $ 956 ​ $ 9,800 ​ $ (8,732) ​ $ 1,068 Trade name ​ ​ 4,048 ​ (101) ​ 3,947 ​ 4,048 ​ — ​ 4,048 ​ ​ $ 13,848 ​ $ (8,945) ​ $ 4,903 ​ $ 13,848 ​ $ (8,732) ​ $ 5,116 ​ Amortization expense for intangible assets subject to amortization was approximately $107,000 and $66,000 for the three months ended December 31, 2020 and 2019, respectively. Amortization expense for intangible assets subject to amortization was approximately $213,000 and $132,000 for the six months ended December 31, 2020 and 2019, respectively. Amortization expense for each of the next five fiscal years is estimated to be as follows:2021 - $425,000; 2022 - $390,000; 2023 - $362,000; 2024 - $336,000; and 2025 - $315,000. The weighted average remaining amortization period for intangible assets was 17.2 years and 17.5 years at December 31, 2020 and June 30, 2020, respectively. Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets in question may not be recoverable. Impairment would be recorded in circumstances where undiscounted cash flows expected to be generated by an asset are less than the carrying value of that asset. Revenue Recognition The Company recognizes revenue when its customers obtain control of its products or services, in an amount that reflects the consideration that the Company expects to receive in exchange for those goods and services. See Note 2 – Revenue Recognition for additional accounting policies and transition disclosures. Advertising and Promotional Costs Advertising and promotional costs are included in "Selling, General and Administrative" expenses in the consolidated statements of income and are expensed as incurred. Advertising expense for the three months ended December 31, 2020 and 2019 was $347,000 and $627,000, respectively. Advertising expense for the six months ended December 31, 2020 and 2019 was $690,000 and $1,141,000, respectively. Research and Development Costs Research and development (“R&D”) costs incurred by the Company are charged to expense as incurred and are included in operating expenses in the consolidated statements of income. Research and development expense for the three months ended December 31, 2020 and 2019 was $1,884,000 and $1,823,000, respectively. Research and development expense for the six months ended December 31, 2020 and 2019 was $3,773,000 and $3,572,000, respectively. Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred income tax expense represents the change during the period in the deferred tax assets and deferred tax liabilities. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company measures and recognizes the tax implications of positions taken or expected to be taken in its tax returns on an ongoing basis. Net Income per Share Basic net income per common share (Basic EPS) is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per common share (Diluted EPS) is computed by dividing net income by the weighted average number of common shares and dilutive common share equivalents and convertible securities then outstanding. The following provides a reconciliation of information used in calculating the per share amounts for the three months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Income ​ Weighted Average Shares ​ Net Income per Share ​ 2020 2019 2020 2019 2020 2019 Basic EPS ​ $ 3,197 ​ $ 3,572 ​ 18,347 ​ 18,478 ​ $ 0.17 ​ $ 0.19 Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ — ​ — ​ 55 ​ 60 ​ — ​ — Diluted EPS ​ $ 3,197 ​ $ 3,572 ​ 18,402 ​ 18,538 ​ $ 0.17 ​ $ 0.19 ​ ​ Options to purchase 32,000 and 36,000 shares of common stock were excluded for the three months ended December 31, 2020 and 2019, respectively, and were not included in the computation of Diluted EPS because their inclusion would be anti-dilutive. These options were still outstanding at the end of the period. ​ The following provides a reconciliation of information used in calculating the per share amounts for the six months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ Net Income per ​ ​ ​ Net Income ​ Shares ​ Share ​ ​ 2020 2019 2020 2019 2020 2019 ​ Basic EPS ​ $ 5,516 ​ $ 6,805 ​ 18,347 ​ 18,478 ​ $ 0.30 ​ $ 0.37 ​ Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ ​ — ​ — 50 59 ​ — ​ — ​ Diluted EPS ​ $ 5,516 ​ $ 6,805 18,397 18,537 ​ $ 0.30 ​ $ 0.37 ​ ​ Options to purchase 36,000 and 18,000 shares of common stock were excluded for the six months ended December 31, 2020 and 2019, respectively, and were not included in the computation of Diluted EPS because their inclusion would be anti-dilutive. These options were still outstanding at the end of the period. ​ Stock-Based Compensation The Company has established four share incentive programs as discussed in Note 8. Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized as expense on a straight-line basis over the vesting period. Determining the fair value of share-based awards at the grant date requires assumptions and judgments about expected volatility and forfeiture rates, among other factors. Stock-based compensation costs of $84,000 and $308,000 were recognized for the three months ended December 31, 2020 and 2019, respectively. Stock-based compensation costs of $188,000 and $325,000 were recognized for the six months ended December 31, 2020 and 2019, respectively. Foreign Currency The Company has determined the functional currency of all foreign subsidiaries is the U.S. Dollar. All foreign operations are considered a direct and integral part or extension of the Company’s operations. The day-to-day operations of all foreign subsidiaries are dependent on the economic environment of the U.S. Dollar. Therefore, no realized and unrealized gains and losses associated with foreign currency translation are recorded for the three or six months ended December 31, 2020 or 2019. Comprehensive Income For the three and six months ended December 31, 2020 and 2019, the Company’s operations did not give rise to material items includable in comprehensive income, which were not already included in net income. Accordingly, the Company’s comprehensive income approximates its net income for all periods presented. Segment Reporting The Company’s reportable operating segments are determined based on the Company’s management approach. The management approach is based on the way that the chief operating decision maker organizes the segments within an enterprise for making operating decisions and assessing performance. The Company’s results of operations are reviewed by the chief operating decision maker on a consolidated basis and the Company operates in only one segment. The Company has presented required geographical data in Note 12. Shipping and Handling Sales and Costs The Company records the amount billed to customers for shipping and handling in net sales ($93,000 and $108,000 in the three months ended December 31, 2020 and 2019, respectively and $199,000 and $220,000 in the six months ended December 31, 2020 and 2019, respectively); and classifies the costs associated with these revenues in cost of sales ($230,000 and $271,000 in the three months ended December 31, 2020 and 2019, respectively, and $451,000 and $531,000 in the six months ended December 31, 2020 and 2019, respectively). Leases Effective July 1, 2019, the Company adopted the new lease accounting standard using the modified retrospective transition option of applying the new standard at the adoption date. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases, and (3) initial direct costs for any existing leases. Adoption of the new standard resulted in the recording of an operating ROU asset and lease liabilities

Revenue Recognition and Contrac

Revenue Recognition and Contracts with Customers	6 Months Ended
	Dec. 31, 2020
Revenue Recognition and Contracts with Customers
Revenue Recognition and Contracts with Customers	NOTE 2 – Revenue Recognition and Contracts with Customers Net Sales The Company is engaged in two major lines of business: (1) the development, manufacture, and distribution of security products, encompassing access control systems, door security products, intrusion and fire alarm systems, alarm communication services, and video surveillance products for commercial and residential use and (2) the Company provides wireless communication service for intrusion and fire alarm systems on a monthly basis. These products and services are used for commercial, residential, institutional, industrial and governmental applications, and are sold worldwide principally to independent distributors, dealers and installers of security equipment. Sales to unaffiliated customers are primarily shipped from the United States. Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. For product sales, the Company typically transfers control at a point in time upon shipment or delivery of the product. For monthly communication services the Company satisfies its performance obligation as the services are rendered and therefore recognizes revenue over the monthly period. Typically timing of revenue recognition coincides with the timing of invoicing to the customers, at which time the Company has an unconditional right to consideration. As such, the Company typically records a receivable when revenue is recognized. The contract with the customer states the final terms of the sale, including the description, quantity, and price of each product purchased. Payment for product sales is typically due within 30 and 180 days of the delivery date. Payment for monthly communication services is billed on a monthly basis and is typically due at the beginning of the month of service. The Company provides limited standard warranty for defective products, usually for a period of 24 to 36 months. The Company accepts returns for such defective products as well as for other limited circumstances. The Company also provides rebates to customers for meeting specified purchasing targets and other coupons or credits in limited circumstances. The Company establishes reserves for the estimated returns, rebates and credits and measures such variable consideration based on the expected value method using an analysis of historical data. Changes to the estimated variable consideration in subsequent periods are not material. As of December 31, 2020 and June 30, 2020, the Company included refund liabilities of approximately $3,798,000 and $3,331,000, respectively, in current liabilities. As of December 31, 2020 and June 30, 2020, the Company included return-related assets of approximately $792,000 and $701,000, respectively, in other current assets. The Company analyzes sales returns and is able to make reasonable and reliable estimates of product returns based on the Company’s past history. Estimates for sales returns are based on several factors including actual returns and based on expected return data communicated to it by its customers. Accordingly, the Company believes that its historical returns analysis is an accurate basis for its allowance for sales returns. Actual results could differ from those estimates. As a percentage of gross sales, sales returns, rebates and allowances were 13% and 11% for the three months ended December 31, 2020 and 2019, respectively. As a percentage of gross sales, sales returns, rebates and allowances were 11% and 9% for the six months ended December 31, 2020 and 2019, respectively. The Company disaggregates revenue from contracts with customers into major product lines. The Company determines that disaggregating revenue into these categories achieves the disclosure objective to depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. As noted in the accounting policy footnote, the Company’s business consists of one operating segment. Following is the disaggregation of revenues based on major product lines (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended December 31, ​ Six months ended December 31, ​ 2020 2019 2020 2019 Major Product Lines: ​ ​ ​ ​ ​ ​ Intrusion and access alarm products ​ $ 8,235 ​ $ 7,772 ​ $ 15,560 ​ $ 15,786 Door locking devices ​ 10,781 ​ 12,273 ​ 19,354 ​ 25,180 Services ​ 8,189 ​ 5,784 ​ 15,464 ​ 11,148 Total Revenues ​ $ 27,205 ​ $ 25,829 ​ $ 50,378 ​ $ 52,114 ​

Business and Credit Concentrati

Business and Credit Concentrations	6 Months Ended
	Dec. 31, 2020
Business and Credit Concentrations
Business and Credit Concentrations	NOTE 3 - Business and Credit Concentrations An entity is more vulnerable to concentrations of credit risk if it is exposed to risk of loss greater than it would have had if it mitigated its risk through diversification of customers. Such risks of loss manifest themselves differently, depending on the nature of the concentration, and vary in significance. The Company had one customer with an accounts receivable balance that comprised 18% and 24% of the Company’s accounts receivable at December 31, 2020 and June 30, 2020, respectively. Sales to this customer comprised 14% and 10% of net sales in the three and six months ended December 31, 2020, respectively. Sales to this customer comprised 10% of net sales in the six months ended December 31, 2019, respectively. The Company had another customer with an accounts receivable balance that comprised 12% of the Company’s accounts receivable at December 31, 2020. The customer's accounts receivable balance did not exceed 10% of accounts receivable at June 30, 2020. Sales to this customer did not exceed 10% of net sales in either of the six or three months ended December 31, 2020 and 2019. The Company had another customer with an accounts receivable balance that comprised 11% of the Company's accounts receivable at December 31, 2020.The customer’s accounts receivable balance did not exceed 10% of accounts receivable at June 30, 2020. Sales to this customer did not exceed 10% of net sales in either of the six or three months ended December 31, 2020 and 2019.

Inventories

Inventories	6 Months Ended
	Dec. 31, 2020
Inventories
Inventories	NOTE 4 - Inventories Inventories, net of reserves are valued at lower of cost (first-in, first-out method) or net realizable value. The Company regularly reviews parts and finished goods inventories on hand and, when necessary, records a provision for excess or obsolete inventories. The Company also regularly reviews the period over which its inventories will be converted to sales. Any inventories expected to convert to sales beyond 12 months from the balance sheet date are classified as non-current. Inventories, net of reserves consist of the following, (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, June 30, ​ ​ 2020 ​ 2020 Component parts ​ $ 20,839 ​ $ 22,877 Work-in-process ​ 6,628 ​ 7,276 Finished product ​ 10,569 ​ 11,602 ​ ​ $ 38,036 ​ $ 41,755 ​ ​ ​ ​ ​ ​ ​ Classification of inventories, net of reserves: ​ ​ Current ​ $ 29,383 ​ $ 35,231 Non-current ​ 8,653 ​ 6,524 ​ ​ $ 38,036 ​ $ 41,755 ​

Property, Plant, and Equipment

Property, Plant, and Equipment	6 Months Ended
	Dec. 31, 2020
Property, Plant, and Equipment
Property, Plant, and Equipment	NOTE 5 – Property, Plant, and Equipment Property, plant and equipment consist of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 June 30, 2020 ​ Useful Life in Years ​ ​ ​ ​ ​ ​ ​ ​ Land ​ $ 904 ​ $ 904 ​ — Buildings ​ 8,911 ​ 8,911 30 to 40 Molds and dies ​ 7,352 ​ 7,337 3 to 5 Furniture and fixtures ​ 2,792 ​ 2,792 5 to 10 Machinery and equipment ​ 25,253 ​ 24,878 7 to 10 Building improvements ​ 2,173 ​ 2,173 Shorter of the lease term or life of asset ​ ​ 47,385 ​ 46,995 Less: accumulated depreciation and amortization ​ (39,543) ​ (38,907) ​ ​ $ 7,842 ​ $ 8,088 ​ Depreciation and amortization expense on property, plant, and equipment was approximately $319,000 and $311,000 for the three months ended December 31, 2020 and 2019, respectively. Depreciation and amortization expense on property, plant, and equipment was approximately $637,000 and $606,000 for the six months ended December 31, 2020 and 2019, respectively.

Income Taxes

Income Taxes	6 Months Ended
	Dec. 31, 2020
Income Taxes
Income Taxes	NOTE 6 - Income Taxes The provision for income taxes represents Federal, foreign, and state and local income taxes. The effective rate differs from statutory rates due to the effect of state and local income taxes, tax rates in foreign jurisdictions, global intangible low-taxed income (“GILTI”), tax benefit of R&D credits and certain nondeductible expenses. Our effective tax rate will change from quarter to quarter based on recurring and non-recurring factors including, but not limited to, the geographical mix of earnings, enacted tax legislation, and state and local income taxes. In addition, changes in judgment from the evaluation of new information resulting in the recognition de-recognition or re-measurement of a tax position taken in a prior annual period is recognized separately in the quarter of the change. For the six months ended December 31, 2020, the Company recognized net income tax expense of $798,000. During the six months ended December 31, 2020, the Company increased its reserve for uncertain income tax positions by $69,000. The Company’s practice is to recognize interest and penalties related to income tax matters in income tax expense and accrued income taxes. As of December 31, 2020, the Company had accrued interest totaling $100,000 as well as $918,000 of unrecognized net tax benefits that, if recognized, would favorably affect the Company’s effective income tax rate in any future period. The Company claims R&D tax credits on eligible R&D expenditures. The R&D tax credits are recognized as a reduction to income tax expense. The Company does not expect that our unrecognized tax benefits will significantly change within the next twelve months. We file a consolidated U.S. income tax return and tax returns in certain state and local and foreign jurisdictions. As of December 31, 2020, we remain subject to examination in all tax jurisdictions for all relevant jurisdictional statutes for fiscal years 2017 and thereafter. The Company was audited by the IRS for fiscal year 2016. In July 2019, the Company received a Form 4549-A, Income Tax Examination Changes from the IRS proposing an adjustment to income for the fiscal 2016 tax year regarding deemed dividends based on its interpretation under Internal Revenue Code (“IRC”) Section 956 arising from the intercompany balances on the books of the Company. In August 2019, the Company filed a formal protest with the IRS requesting an opportunity to appeal the examination findings to the Appeals Office. During fiscal year 2020, the Company settled the issue at Appeals and recorded a provision for the federal and state impact of $762,000 and $70,000 respectively. During the six months ended December 31, 2020, the Company recorded an additional provision of $15,000 for interest. As of December 31, 2020 all federal and state liabilities related to the fiscal year 2016 audit have been paid. The Company is currently under audit for the fiscal year 2017. The IRS has raised the IRC Section 956 issue that was settled during the fiscal year 2016 audit. The Company strongly believes that the position of the IRS with regard to this matter is inconsistent with the provisions of IRC Section 956 and that the Company is willing to litigate, if necessary to argue its position. During fiscal year 2020, the Company’s provision for income taxes included a provision for the incremental tax liability of $657,000 and interest of $66,000 was recorded for the 2017 and 2018 fiscal years. For the six months ended December 31, 2020, additional interest expense was accrued for in the amount of $12,000. The Company has identified its U.S. Federal income tax return and its State return in New York as its major tax jurisdictions.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Dec. 31, 2020
Long-Term Debt
Long-Term Debt	NOTE 7 - Long-Term Debt As of December 31, 2020, long-term debt consisted of a revolving line of credit of $11,000,000 (“Revolver Agreement”) which expires in June 2024 and term loans from the U.S. Small Business Administration totaling $3,904,000 through its Payroll Protection Program. Outstanding balances and interest rates as of December 31, 2020 and June 30, 2020 are as follows (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ June 30, 2020 ​ Outstanding Interest Rate Outstanding Interest Rate Revolving line of credit ​ $ — n/a ​ $ — n/a ​ Term loans ​ 3,904 1 % 3,904 1 % ​ ​ 3,904 ​ ​ ​ 3,904 ​ ​ ​ Less: current maturities ​ (1,084) ​ (1,794) ​ Long-term debt ​ $ 2,820 ​ $ 2,110 ​ ​ The Revolver Agreement also provides for a LIBOR-based interest rate option of LIBOR plus 1.15% to 2.00%, depending on the ratio of outstanding debt to EBITDA, which is to be measured and adjusted quarterly, a prime rate-based option of the prime rate plus 0.25% and other terms and conditions as more fully described in the Revolver Agreement. The Company’s obligations under the Revolver Agreement continue to be secured by substantially all of its domestic assets, including but not limited to, deposit accounts, accounts receivable, inventory, equipment and fixtures and intangible assets. In addition, the Company’s wholly-owned subsidiaries, with the exception of the Company’s foreign subsidiaries, have issued guarantees and pledges of all of their assets to secure the Company’s obligations under the Revolver Agreement. All of the outstanding common stock of the Company’s domestic subsidiaries and 65% of the common stock of the Company’s foreign subsidiaries has been pledged to secure the Company’s obligations under the Revolver Agreement. The Revolver Agreement contains various restrictions and covenants including, among others, restrictions on payment of dividends, restrictions on borrowings and compliance with certain financial ratios, as defined in the Revolver Agreement. In September 2020, the Company and its lender amended the Revolver Agreement, which had an expiration date of June 2021, to expire in June 2024. The amended Revolver Agreement also removed certain requirements and restrictions on the Company as well as removing the mortgage on the Company’s Amityville facility. During the fourth quarter of fiscal 2020, the Company received the proceeds of promissory notes (“Notes”) dated between April 17, 2020 and May 7, 2020 (the “PPP Loan Agreement”), entered into between the Company and HSBC Bank USA N.A., as lender (the “Lender). The Lender made the loans pursuant to the Paycheck Protection Program (the “PPP”), created by Section 1102 of the CARES Act and governed by the CARES Act, Section 7(a)(36) of the Small Business Act, any rules or guidance that has been issued by the SBA implementing the PPP and acting as guarantor, or any other applicable loan program requirements, as defined in 13 CFR § 120.10, as amended from time to time. Pursuant to the PPP Loan Agreement, the Lender made loans to the Company with an aggregate principal amount of $3,904,000 (the “PPP Loan”). Pursuant to the CARES Act, the loan may be forgiven by the SBA. The Company anticipates applying for forgiveness of these loans during fiscal 2021. The amount of loan forgiveness is determined by and is subject to the sole approval of the SBA. The amount of loan forgiveness is determined by calculating allowable expenses during a period of 24 weeks from the date of the receipt of the loan proceeds (the “Effective Period”) and may be reduced if loan proceeds are not used for qualified expenses. To receive loan forgiveness, the Company must apply for loan forgiveness and provide documentation as requested by the SBA. There will be no loan forgiveness without the Company’s submission of the proper application and documentation to Lender to include all SBA requirements. Not more than 25% of the amount forgiven can be attributable to non-payroll costs. While the Company believes it is eligible for forgiveness, no assurance can be provided that the Company will obtain forgiveness of the PPP Loan in whole or in part or, if forgiven, will not be disallowed by the SBA if audited. The maturity dates of the PPP Loan are between April 17, 2022 and May 7, 2022, which is two years from the PPP Loan Agreement date. The interest accrues from the date of disbursement of the PPP Loan (the “Effective Date”). The PPP Loan bears interest at a fixed rate equal to one percent (1%) per annum and interest will accrue from the Effective Date. PPP Loan payments are deferred for ten months after the end of the effective period. Subject to adjustment for any PPP Loan forgiveness granted by the CARES Act, the Company will subsequently pay 18 fully amortized monthly consecutive principal and interest payments for all principal and all accrued interest not yet paid, with the first PPP Loan payment due on the date that is ten months after the end of the effective period. The proceeds of the PPP Loan shall be used for the following purposes only: (i) payroll costs as defined by the CARES Act, (ii) costs related to the continuation of group health care benefits during periods of paid sick, medical, or family leave, and insurance premiums; (iii) mortgage interest payments, (iv) rent payments, (v) utility payments, (vi) interest payments on any other debt obligations incurred before February 15, 2020, and/or (vii) refinancing a SBA Economic Injury Disaster Loan made between January 31, 2020 and April 3, 2020. The PPP Loan and the related documentation contain customary events of default, including: (i) any representation or warranty made, or financial or other information provided, by the Company under the PPP Loan Agreement being false or misleading in any material respect; (ii) the failure by the Company to make required payments; (iii) the failure by the Company to perform or comply with certain agreements; and (iv) the dissolution or termination of the Company's existence as a going business, the insolvency of the Company, the appointment of a receiver for any part of the Company's property, any assignment for the benefit of creditors, any type of creditor workout, or the commencement of any proceeding under any bankruptcy or insolvency laws by or against the Company. Upon default, Lender may declare the entire unpaid principal balance under this Note and all accrued unpaid interest immediately due, and then the Company will pay that amount. Lender may hire or pay someone else to help collect this Note if the Company does not pay. The Company will pay Lender that amount. This includes, subject to any limits under applicable law, Lender's attorneys' fees and Lender's legal expenses, whether or not there is a lawsuit, including attorneys' fees, expenses for bankruptcy proceedings (including efforts to modify or vacate any automatic stay or injunction), and appeals. The Company also will pay any court costs, in addition to all other sums provided by law. Should the Company default on the PPP Loan, SBA may be required to pay Lender under the SBA guarantee. SBA may then seek recovery of these funds from the Company and the Company may not claim or assert against SBA any immunities or defenses available under local law to defeat, modify or otherwise limit the Company's obligation to repay to SBA any funds advanced by Lender to the Company. If the Company defaults on the SBA-guaranteed loan and SBA suffers a loss, the names of the small business will be referred for listing in the Credit Alert Verification Reporting System (CAIVRS) database, which may affect their eligibility for further assistance. The Company is accounting for the PPP Loan as debt in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 470, Debt and accrues interest in accordance with the interest method under FASB ASC 835-30. The Company will not impute additional interest at a market rate (even though the stated interest rate may be below market) as transactions where interest rates are prescribed by governmental agencies are excluded from the scope of the FASB ASC 835-30 guidance on imputing interest. For purposes of de-recognition or forgiveness of the liability, FASB ASC 470-50-15-4 refers to guidance in FASB ASC 405-20. Based on the guidance in FASB ASC 405-20-40-1, the proceeds from the loan would remain recorded as a liability until either (1) the loan is, in part or wholly, forgiven and the debtor has been “legally released” or (2) the debtor pays off the loan to the creditor. Once the loan is, in part or wholly, forgiven and legal release is received, the Company will reduce the liability by the amount forgiven and record a gain on extinguishment.

Stock Options

Stock Options	6 Months Ended
	Dec. 31, 2020
Stock Options
Stock Options	NOTE 8 - Stock Options The Company follows ASC Topic 718, "Compensation-Stock Compensation", which requires that all share based payments to employees, including stock options, be recognized as compensation expense in the consolidated financial statements based on their fair values and over the requisite service period. The Company recorded non-cash compensation expense relating to stock-based compensation of $84,000 and $308,000 for the three months ended December 31, 2020 and 2019, respectively ($0.00 and $0.02 per basic and diluted share for each period, respectively) and $188,000 and $325,000 for the six months ended December 31, 2020 and 2019, respectively ($0.01 and $0.02 per basic and diluted share for each period, respectively). 2012 Employee Stock Option Plan In December 2012, the stockholders approved the 2012 Employee Stock Option Plan (" 2012 Employee Plan"). The 2012 Employee Plan authorizes the granting of awards, the exercise of which would allow up to an aggregate of 950,000 shares of the Company’s common stock to be acquired by the holders of such awards. Under this plan, the Company may grant stock options, which are intended to qualify as incentive stock options ("ISOs"), to valued employees. Any plan participant who is granted ISOs and possesses more than 10% of the voting rights of the Company’s outstanding common stock must be granted an option with a price of at least 110% of the fair market value on the date of grant. Under the 2012 Employee Plan, stock options may be granted to valued employees with a term of up to 10 years at an exercise price equal to or greater than the fair market value on the date of grant and are exercisable, in whole or in part, at 20% per year beginning on the date of grant. An option granted under this plan shall vest in full upon a “change in control” as defined in the plan. At December 31, 2020, 117,840 stock options were outstanding, 47,800 stock options were exercisable and 731,960 stock options were available for grant under this plan. No options were granted during the three or six months ended December 31, 2020. The fair value of each option granted during the six months ended December 31, 2019 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2019 Risk-free interest rates ​ 1.80% - 2.10 % Expected lives ​ 10 years ​ Expected volatility ​ 45%-46 % Expected dividend yields ​ 0 % ​ The following table reflects activity under the 2012 Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ ​ ​ Weighted average ​ ​ ​ ​ Weighted average ​ Options exercise price Options exercise price Outstanding, beginning of year ​ ​ 117,840 ​ $ 18.84 ​ ​ 72,500 ​ $ 11.01 Granted ​ ​ — ​ ​ — ​ ​ 28,000 ​ ​ 30.13 Exercised ​ ​ — ​ — ​ — ​ — Outstanding, end of period ​ ​ 117,840 ​ $ 18.84 ​ 100,500 ​ $ 16.34 Exercisable, end of period ​ ​ 47,800 ​ $ 14.66 ​ 48,400 ​ $ 11.10 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ $ 16.57 ​ ​ Total intrinsic value of options exercised ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ ​ Total intrinsic value of options outstanding ​ $ 963,000 ​ ​ ​ ​ $ 1,359,000 ​ ​ Total intrinsic value of options exercisable ​ $ 590,000 ​ ​ ​ ​ $ 895,000 ​ ​ ​ No stock options were exercised during the six or three months ended December 31, 2020 or 2019. No cash was received from option exercises during either of the six or three months ended December 31, 2020 or 2019 and the actual tax benefit realized for the tax deductions from option exercises was $0 for both periods. ​ The following table summarizes information about stock options outstanding under the 2012 Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average ​ ​ ​ ​ ​ ​ ​ Number ​ remaining ​ Weighted average ​ Number ​ Weighted average Range of exercise prices ​ outstanding ​ contractual life ​ exercise price ​ exercisable ​ exercise price $4.37‑$33.59 ​ 117,840 ​ 7.9 ​ $ 18.84 ​ 47,800 ​ $ 14.66 ​ ​ 117,840 ​ 7.9 ​ $ 18.84 ​ 47,800 ​ $ 14.66 ​ As of December 31, 2020, there was $748,000 of unearned stock-based compensation cost related to share-based compensation arrangements granted under the 2012 Employee Plan. 0 and 28,000 options were granted during the six months ended December 31, 2020 and 2019, respectively. 10,400 and 13,000 options vested during the three months ended December 31, 2020 and 2019, respectively. 12,800 and 14,600 options vested during the six months ended December 31, 2020 and 2019, respectively. The total fair value of the options vesting during the three months ended December 31, 2020 and 2019 under this plan was $106,000 and $133,000, respectively. The total fair value of the options vesting during the six months ended December 31, 2019 and 2018 under this plan was $135,000 and $150,000, respectively. 2012 Non-Employee Stock Option Plan In December 2012, the stockholders approved the 2012 Non-Employee Stock Option Plan (the “2012 Non-Employee Plan”). This plan authorizes the granting of awards, the exercise of which would allow up to an aggregate of 50,000 shares of the Company’s common stock to be acquired by the holders of such awards. Under this plan, the Company may grant stock options to non-employee directors and consultants to the Company and its subsidiaries. Under the 2012 Non-Employee Plan, stock options may be granted with a term of up to 10 years at an exercise price equal to or greater than the fair market value on the date of grant and are exercisable in whole or in part at 20% per year beginning on the date of grant. An option granted under this plan shall vest in full upon a “change in control” as defined in the plan. At December 31 2020, 12,000 stock options were outstanding, 8,520 stock options were exercisable and no further stock options were available for grant under this plan. The following table reflects activity under the 2012 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ Weighted average ​ ​ Weighted average ​ ​ Options ​ exercise price ​ Options ​ exercise price Outstanding, beginning of year ​ ​ 12,000 ​ $ 10.29 ​ ​ 10,200 ​ $ 7.99 Exercised ​ ​ — ​ — ​ — ​ — Outstanding, end of period ​ ​ 12,000 ​ $ 10.29 ​ 10,200 ​ $ 7.99 Exercisable, end of period ​ ​ 8,520 ​ $ 9.08 ​ 5,400 ​ $ 7.35 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ Total intrinsic value of options exercised ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ Total intrinsic value of options outstanding ​ $ 191,000 ​ ​ ​ ​ $ 218,000 ​ Total intrinsic value of options exercisable ​ $ 146,000 ​ ​ ​ ​ $ 119,000 ​ ​ No stock options were exercised during the six or three months ended December 31, 2020 or 2019. No cash was received from option exercises during either of the six or three months ended December 31, 2020 or 2019 and the actual tax benefit realized for the tax deductions from option exercises was $0 for both periods. The following table summarizes information about stock options outstanding under the 2012 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average Weighted ​ Weighted ​ ​ Number ​ remaining ​ average exercise ​ Number ​ average exercise Range of exercise prices ​ outstanding contractual life ​ price ​ exercisable ​ price $4.37 - $23.35 ​ 12,000 ​ 6.7 ​ $ 10.29 ​ 8,520 ​ $ 9.08 ​ ​ 12,000 ​ 6.7 ​ $ 10.29 ​ 8,520 ​ $ 9.08 ​ As of December 31, 2020, there was $24,000 of unearned stock-based compensation cost related to share-based compensation arrangements granted under the 2012 Non-Employee Plan. No options were granted during the six or three months ended. 2,760 and 2,400 options vested during the six and three months ended December 31, 2020 and 2019, respectively. The total fair value of the options vesting during the six and three months ended December 31, 2020 and 2019 under this plan was $18,000 and $13,000, respectively. 2018 Non-Employee Stock Option Plan In December 2018, the stockholders approved the 2018 Non-Employee Stock Option Plan (the “2018 Non-Employee Plan”). This plan authorizes the granting of awards, the exercise of which would allow up to an aggregate of 50,000 shares of the Company’s common stock to be acquired by the holders of such awards. Under this plan, the Company may grant stock options to non-employee directors and consultants to the Company and its subsidiaries. Under the 2018 Non-Employee Plan, stock options may be granted with a term of up to 10 years at an exercise price equal to or greater than the fair market value on the date of grant and are exercisable in whole or in part at 20% per year beginning on the date of grant. An option granted under this plan shall vest in full upon a “change in control” as defined in the plan. At December 31, 2020, 48,400 stock options were outstanding, 18,640 stock options were exercisable and 0 stock options were available for grant under this plan. No options were granted during the three or six months ended December 31, 2020. The fair value of each option granted during the six months ended December 31, 2019 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2019 Risk-free interest rates 1.80 % Expected lives 10 years ​ Expected volatility 45 % Expected dividend yields — % ​ The following table reflects activity under the 2018 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ Weighted average ​ ​ Weighted average ​ ​ Options exercise price ​ Options exercise price Outstanding, beginning of year ​ ​ 48,400 ​ $ 23.48 ​ ​ 15,200 ​ $ 16.20 Granted ​ ​ — ​ — ​ 16,000 ​ 30.54 Outstanding, end of period ​ ​ 48,400 ​ $ 23.48 ​ 31,200 ​ $ 23.55 Exercisable, end of period ​ ​ 18,640 ​ $ 22.44 ​ 8,800 ​ $ 21.41 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ ​ $ 17.40 ​ ​ ​ Total intrinsic value of options exercised ​ n/a ​ ​ ​ ​ ​ n/a ​ ​ ​ Total intrinsic value of options outstanding ​ $ 202,000 ​ ​ ​ ​ $ 200,000 ​ ​ ​ Total intrinsic value of options exercisable ​ $ 98,000 ​ ​ ​ ​ $ 74,000 ​ ​ ​ ​ No stock options were exercised during the six or three months ended December 31, 2020 or 2019. No cash was received from option exercises during either of the six or three months ended December 31, 2020 or 2019 and the actual tax benefit realized for the tax deductions from option exercises was $0 for both periods. The following table summarizes information about stock options outstanding under the 2018 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average Weighted ​ Weighted ​ ​ Number ​ remaining ​ average exercise ​ Number ​ average exercise Range of exercise prices ​ outstanding ​ contractual life ​ price ​ exercisable ​ price $16.20-$30.54 ​ 48,400 8.6 ​ $ 23.48 12,240 ​ $ 22.44 ​ ​ 48,400 8.6 ​ $ 23.48 12,240 ​ $ 22.44 ​ As of December 31, 2020, there was $344,000 of unearned stock-based compensation cost related to share-based compensation arrangements granted under the 2012 Employee Plan. 0 and 16,000 options were granted during the six months ended December 31, 2020 and 2019, respectively. 6,400 options vested during the six and three months ended December 31, 2020 and 2019, respectively. The total fair value of the options vesting during the six and three months ended December 31, 2020 and 2019 under this plan was $88,000. ​ 2020 Non-Employee Stock Option Plan In May 2020, the stockholders approved the 2020 Non-Employee Stock Option Plan (the “2020 Non-Employee Plan”). This plan authorizes the granting of awards, the exercise of which would allow up to an aggregate of 50,000 shares of the Company's common stock to be acquired by the holders of such awards. Under this plan, the Company may grant stock options to non-employee directors and consultants to the Company and its subsidiaries. Under the 2020 Non-Employee Plan, stock options may be granted with a term of up to 10 years at an exercise price equal to or greater than the fair market value on the date of grant and are exercisable in whole or in part at 20% per year beginning on the date of grant. An option granted under this plan shall vest in full upon a “change in control” as defined in the plan. At December 31, 5,000 stock options were outstanding, 1,000 stock options were exercisable and 45,000 stock options were available for grant under this plan. The fair value of each option granted during the six months ended December 31 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2020 Risk-free interest rates 0.62 % Expected lives 10 years ​ Expected volatility 45 % Expected dividend yields — % ​ The following table reflects activity under the 2020 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ ​ ​ ​ ​ Weighted average ​ Options exercise price Outstanding, beginning of year ​ — ​ — Granted ​ 5,000 ​ $ 22.80 Exercised ​ — ​ — Outstanding, end of period ​ 5,000 ​ $ 22.80 Exercisable, end of period ​ 1,000 ​ $ 22.80 Weighted average fair value at grant date of options granted ​ $ 12.20 ​ Total intrinsic value of options exercised ​ n/a ​ Total intrinsic value of options outstanding ​ $ 17,000 ​ Total intrinsic value of options exercisable ​ $ 3,000 ​ ​ No stock options were exercised during the six or three months ended December 31, 2020 or 2019. No cash was received from option exercises during either of the six or three months ended December 31, 2020 or 2019 and the actual tax benefit realized for the tax deductions from option exercises was $0 for both periods. The following table summarizes information about stock options outstanding under the 2020 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ ​ ​ Weighted average ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number ​ remaining ​ Weighted average ​ Number ​ Weighted average Range of exercise prices outstanding contractual life exercise price exercisable exercise price $22.80 5,000 9.7 ​ $ 22.80 1,000 ​ $ 22.80 ​ 5,000 9.7 ​ $ 22.80 1,000 ​ $ 22.80 ​ As of December 31, 2020, there was $43,000 of unearned stock-based compensation cost related to share-based compensation arrangements granted under the 2020 Non-Employee Plan. 0 options were granted during the three months ended December 31, 2020. 5,000 options were granted during the six months ended December 31, 2020. 1,000 options vested during the six months ended December 31, 2020. 0 options vested during the three months ended December 31, 2020. The total fair value of the options vesting during the six months ended December 31, 2020 under this plan was $12,000.

Stockholders' Equity Transactio

Stockholders' Equity Transactions	6 Months Ended
	Dec. 31, 2020
Stockholders' Equity Transactions
Stockholders' Equity Transactions	NOTE 9 – Stockholders’ Equity Transactions On September 16, 2014 the Company’s board of directors authorized the repurchase of up to 1 million of the approximately 19.4 million shares of the Company’s common stock then outstanding. Such repurchases may be made from time to time in the open market or in privately negotiated transactions subject to market conditions and the market price of the common stock. Pursuant to the PPP Loan Agreement described in Note 7, the Company may not repurchase any of its shares of common stock until 12 months after the termination of the term loans described therein. No shares were repurchased during the six months ended December 31, 2020. During the fiscal year ended June 30, 2020 the Company repurchased 144,405 shares of its outstanding common stock at a weighted average price of $16.99. Shares repurchased through June 30, 2020 are included in the Company’s Treasury Stock as of June 30, 2020. ​ During fiscal 2020, certain employees and Directors exercised stock options under the Company's 2012 Employee and Non-Employee Stock Option Plans totaling 15,600 shares. 3,600 of these exercises were completed as cashless exercises as allowed for under the Plans, where the exercise shares are issued by the Company in exchange for shares of the Company's common stock that are owned by the optionees. The number of shares surrendered by the optionees was 1,628 and was based upon the per share price on the effective date of the option exercise. ​

Related Party Transaction

Related Party Transaction	6 Months Ended
	Dec. 31, 2020
Related Party Transaction
Related Party Transaction	NOTE 10 – Related Party Transaction ​ On December 15, 2020, 2,333,071 shares of common stock were sold in a secondary offering by an existing shareholder, the Company's President and Chairman. On December 21, 2020, the underwriters of the secondary offering fully exercised the option granted at the time of the secondary offering to purchase an additional 334,961 shares of common stock at the secondary offering price of $26.00 per share ("Greenshoe"), less underwriting discounts and commissions, which consists solely of shares sold by the Company's President and Chairman. The Company received no proceeds from the secondary offering or the Greenshoe but incurred $289,000 in offering expenses, which are recorded in selling, general, and administrative expenses in the accompanying condensed consolidated statements of income. ​

401(k) Plan

401(k) Plan	6 Months Ended
	Dec. 31, 2020
401(k) Plan
401(k) Plan	NOTE 11 - 401(k) Plan The Company maintains a 401(k) plan (“the Plan”) that covers all U.S. non-union employees with one or more years of service and is qualified under Sections 401(a) and 401(k) of the Internal Revenue Code. Company contributions to this plan are discretionary and totaled $36,000 and $34,000 for the three months ended December 31, 2020 and 2019, respectively. Company contributions to this plan are discretionary and totaled $68,000 and $64,000 for the six months ended December 31, 2020 and 2019, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Dec. 31, 2020
Commitments and Contingencies
Commitments and Contingencies	NOTE 12 - Commitments and Contingencies Leases Effective July 1, 2019, the Company adopted the new lease accounting standard using the modified retrospective transition option of applying the new standard at the adoption date. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases, and (3) initial direct costs for any existing leases. Adoption of the new standard resulted in the recording of an operating ROU asset and lease Our lease obligation consists of a 99 year lease which commenced on April 26, 1993 with one of the Company’s foreign subsidiaries, expiring in 2092, for approximately four acres of land in the Dominican Republic at an annual cost of $288,000, on which the Company’s principal production facility is located. Operating leases are included in operating lease right-of-use assets, accrued expenses and operating lease liabilities, non-current on our condensed consolidated balance sheets. For the three and six months ended December 30, 2020, cash payments against operating lease liabilities totaled $72,000 and $144,000, respectively. For the three and six months ended December 31, 2019, cash payments against operating lease liabilities totaled $72,000 and $168,000, respectively. Supplemental balance sheet information related to operating leases was as follows: ​ ​ ​ ​ ​ Weighted-average remaining lease term 71 years ​ Weighted-average discount rate ​ 3.55 % ​ The following is a schedule, by years, of maturities of lease liabilities as of December 31, 2020 (in thousands): ​ ​ ​ ​ ​ Year Ending June 30, Amount 2021 ​ $ 143 2022 ​ 277 2023 ​ 268 2024 ​ 258 2025 ​ 249 Thereafter ​ ​ 6,189 Total ​ $ 7,384 ​ Operating lease expense totaled approximately $79,000 and $79,000, for the three months ended December 31, 2020 and 2019, respectively. Operating lease expense totaled approximately $158,000 and $158,000, for the six months ended December 31, 2020 and 2019, respectively. Litigation In the normal course of business, the Company is a party to claims and/or litigation. Management believes that the settlement of such claims and/or litigation, considered in the aggregate, will not have a material adverse effect on the Company’s financial position and results of operations. Employment Agreements As of December 31, 2020, the Company was obligated under two employment agreements and one severance agreement. The employment agreements are with the Company’s CEO and the Senior Vice President of Engineering (“the SVP of Engineering”). The employment agreement with the CEO provides for an annual salary of $752,000, as adjusted for inflation; incentive compensation as may be approved by the Board of Directors from time to time and a termination payment in an amount up to 299% of the average of the prior five calendar year's compensation, subject to certain limitations, as defined in the agreement. The employment agreement renews annually in August unless either party gives the other notice of non-renewal at least six months prior to the end of the applicable term. The employment agreement with the SVP of Engineering expires in August 2022 and provides for an annual salary of $333,798, and, if terminated by the Company without cause, severance of nine month’s salary and continued company-sponsored health insurance for six months from the date of termination. The severance agreement is with the Senior Vice President of Operations and Finance and provides for, if terminated by the Company without cause or within three months of a change in corporate control of the Company, severance of nine month’s salary, continued company-sponsored health insurance for six months from the date of termination and certain non-compete and other restrictive provisions.

Geographical Data

Geographical Data	6 Months Ended
	Dec. 31, 2020
Geographical Data
Geographical Data	NOTE 13 – Geographical Data The Company is engaged in one major line of business: the development, manufacture, and distribution of security products, encompassing access control systems, door-locking products, intrusion and fire alarm systems and video surveillance products for commercial and residential use. The Company also provides wireless communication service for intrusion and fire alarm systems. These products are used for commercial, residential, institutional, industrial and governmental applications, and are sold worldwide principally to independent distributors, dealers and installers of security equipment. Sales to unaffiliated customers are primarily shipped from the United States. The Company has customers worldwide with major concentrations in North America. Financial Information Relating to Domestic and Foreign Operations ​ Financial Information Relating to Domestic and Foreign Operations (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended December 31, ​ Six months ended December 31, ​ ​ 2020 2019 2020 2019 ​ Sales to external customers(1): ​ ​ ​ ​ ​ ​ ​ Domestic ​ $ 26,793 ​ $ 25,236 ​ $ 49,682 ​ $ 51,055 ​ Foreign ​ 412 ​ 593 ​ 696 ​ 1,059 ​ Total Net Sales ​ $ 27,205 ​ $ 25,829 ​ $ 50,378 ​ $ 52,114 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 June 30, 2020 Identifiable assets: ​ ​ ​ United States ​ $ 73,635 ​ $ 69,436 Dominican Republic (2) ​ 34,658 ​ 36,402 Total Identifiable Assets ​ $ 108,293 ​ $ 105,838 (1) All of the Company’s sales originate in the United States and are shipped primarily from the Company’s facilities in the United States. There were no sales into any one foreign country in excess of 10% of total Net Sales. (2) Consists primarily of inventories (December 31, 2020 = $23,648; June 30, 2020 = $25,246), operating lease assets (December 31, 2020 = $7,384; June 30, 2020 = $7,395) and fixed assets (December 31, 2020 = $3,276; June 30, 2020 = $3,481) located at the Company's principal manufacturing facility in the Dominican Republic.

Subsequent Events

Subsequent Events	6 Months Ended
	Dec. 31, 2020
Subsequent Events
Subsequent Events	NOTE 14 - Subsequent Events The Company has evaluated subsequent events occurring after the date of the consolidated financial statements for events requiring recording or disclosure in the consolidated financial statements.

Nature of Business and Summar_2

Nature of Business and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Dec. 31, 2020
Nature of Business and Summary of Significant Accounting Policies
Nature of Business	Nature of Business : Napco Security Technologies, Inc. (“NAPCO”, “the Company”, “we”) is one of the leading manufacturers and designers of high-tech electronic security devices, wireless communication services for intrusion and fire alarm systems as well as a leading provider of school safety solutions. We offer a diversified array of security products, encompassing access control systems, door-locking products, intrusion and fire alarm systems and video surveillance products. These products are used for commercial, residential, institutional, industrial and governmental applications, and are sold worldwide principally to independent distributors, dealers and installers of security equipment. We have experienced significant growth in recent years, primarily driven by fast growing recurring service revenues generated from wireless communication services for intrusion and fire alarm systems, as well as our school security products that are designed to meet the increasing needs to enhance school security as a result of on-campus shooting and violence in the U.S. While recurring service revenues have continued to increase during the COVID-19 pandemic, equipment sales were negatively impacted by the economic slowdown associated with this pandemic. The Company's fiscal year begins on July 1 and ends on June 30. Historically, the end users of the Company’s products want to install its products prior to the summer; therefore sales of its products historically peak in the period April 1 through June 30, the Company's fiscal fourth quarter, and are reduced in the period July 1 through September 30, the Company's fiscal first quarter. In addition, demand for our products is affected by the housing and construction markets. Deterioration of the current economic conditions may also affect this trend. Our fourth quarter of fiscal 2020 and the first and second quarters of fiscal 2021 reflected the challenging business environment resulting from the COVID-19 pandemic. The COVID-19 pandemic has caused difficulties for security equipment professionals getting access to both commercial and residential installation sites. We sell our products primarily through distribution to dealers and we are now seeing strong sell-through statistics from several of our largest distributors.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of Napco Security Technologies, Inc. and all of its wholly-owned subsidiaries. All inter-company balances and transactions have been eliminated in consolidation.
Accounting Estimates	Accounting Estimates The preparation of financial statements in conformity with Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent gains and losses at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Critical estimates include management's judgments associated with reserves for sales returns and allowances, allowance for doubtful accounts, inventory reserves, valuation of intangible assets and income taxes. Actual results could differ from those estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The methods and assumptions used to estimate the fair value of the following classes of financial instruments were: Current Assets and Current Liabilities - The carrying amount of cash and cash equivalents, certificates of deposits, current receivables and payables and certain other short-term financial instruments approximate their fair value as of December 31, 2020 and June 30, 2020 due to their short-term maturities. Long-term debt and lease liabilities approximate fair value based on prevailing market rates.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include approximately $460,000 of short-term time deposits at December 31, 2020 and June 30, 2020. The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company has cash balances in banks in excess of the maximum amount insured by the FDIC and other international agencies as of December 31, 2020 and June 30, 2020. The Company has not historically experienced any credit losses with balances in excess of FDIC limits.
Accounts Receivable	Accounts Receivable Accounts receivable is stated net of the reserves for doubtful accounts of $196,000 as of December 31, 2020 and $326,000 as of June 30, 2020. Our reserves for doubtful accounts are subjective critical estimates that have a direct impact on reported net earnings. These reserves are based upon the evaluation of our accounts receivable aging, specific exposures, sales levels and historical trends.
Inventories	Inventories Inventories are valued at the lower of cost or net realizable value, with cost being determined on the first-in, first-out (FIFO) method. The reported net value of inventory includes finished saleable products, work-in-process and raw materials that will be sold or used in future periods. Inventory costs include raw materials, direct labor and overhead. The Company’s overhead expenses are applied based, in part, upon estimates of the proportion of those expenses that are related to procuring and storing raw materials as compared to the manufacture and assembly of finished products. These proportions, the method of their application, and the resulting overhead included in ending inventory, are based in part on subjective estimates and actual results could differ from those estimates. In addition, the Company records an inventory obsolescence reserve, which represents any excess of the cost of the inventory over its estimated realizable value, based on various product sales projections. This reserve is calculated using an estimated obsolescence percentage applied to the inventory based on age, historical trends, requirements to support forecasted sales, and the ability to find alternate applications of its raw materials and to convert finished product into alternate versions of the same product to better match customer demand. In addition, and as necessary, the Company may establish specific reserves for future known or anticipated events. There is inherent professional judgment and subjectivity made by both production and engineering members of management in determining the estimated obsolescence percentage. The Company also regularly reviews the period over which its inventories will be converted to sales. Any inventories expected to convert to sales beyond 12 months from the balance sheet date are classified as non-current.
Property, Plant, and Equipment	Property, Plant, and Equipment Property, plant, and equipment are carried at cost less accumulated depreciation. Expenditures for maintenance and repairs are charged to expense as incurred; costs of major renewals and improvements are capitalized. At the time property and equipment are retired or otherwise disposed of, the cost and accumulated depreciation are eliminated from the asset and accumulated depreciation accounts and the profit or loss on such disposition is reflected in income. Depreciation is recorded over the estimated service lives of the related assets using the straight-line method. Amortization of leasehold improvements is calculated by using the straight-line method over the estimated useful life of the asset or lease term, whichever is shorter.
Intangible Assets	Intangible Assets Intangible assets with definite lives are amortized over their useful lives and are reviewed for impairment whenever there is an indication that the carrying amount may not be recovered. The Company’s acquisition of substantially all of the assets and certain liabilities of G. Marks Hardware, Inc. (“Marks”) in August 2008 included intangible assets recorded at fair value on the date of acquisition. The customer relationships are amortized over their estimated useful lives of twenty years. At the acquisition, the Marks trade name was deemed to have an indefinite life. At the conclusion of fiscal 2020, the Company determined that the trade-name was impaired. Accordingly, the Company recorded an impairment charge of $1,852,000 and reclassified the remaining balance of the underlying asset from indefinite-lived to a long-lived asset with a remaining useful life of 20 years as of June 30, 2020. Changes in intangible assets are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ June 30, 2020 ​ Carrying Accumulated Net book Carrying Accumulated Net book ​ ​ value ​ amortization ​ value ​ value ​ amortization ​ value Customer relationships ​ $ 9,800 ​ $ (8,844) ​ $ 956 ​ $ 9,800 ​ $ (8,732) ​ $ 1,068 Trade name ​ ​ 4,048 ​ (101) ​ 3,947 ​ 4,048 ​ — ​ 4,048 ​ ​ $ 13,848 ​ $ (8,945) ​ $ 4,903 ​ $ 13,848 ​ $ (8,732) ​ $ 5,116 ​ Amortization expense for intangible assets subject to amortization was approximately $107,000 and $66,000 for the three months ended December 31, 2020 and 2019, respectively. Amortization expense for intangible assets subject to amortization was approximately $213,000 and $132,000 for the six months ended December 31, 2020 and 2019, respectively. Amortization expense for each of the next five fiscal years is estimated to be as follows:2021 - $425,000; 2022 - $390,000; 2023 - $362,000; 2024 - $336,000; and 2025 - $315,000. The weighted average remaining amortization period for intangible assets was 17.2 years and 17.5 years at December 31, 2020 and June 30, 2020, respectively.
Long-Lived Assets	Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets in question may not be recoverable. Impairment would be recorded in circumstances where undiscounted cash flows expected to be generated by an asset are less than the carrying value of that asset.
Revenue Recognition	Revenue Recognition The Company recognizes revenue when its customers obtain control of its products or services, in an amount that reflects the consideration that the Company expects to receive in exchange for those goods and services. See Note 2 – Revenue Recognition for additional accounting policies and transition disclosures.
Advertising and Promotional Costs	Advertising and Promotional Costs Advertising and promotional costs are included in "Selling, General and Administrative" expenses in the consolidated statements of income and are expensed as incurred. Advertising expense for the three months ended December 31, 2020 and 2019 was $347,000 and $627,000, respectively. Advertising expense for the six months ended December 31, 2020 and 2019 was $690,000 and $1,141,000, respectively.
Research and Development Costs	Research and Development Costs Research and development (“R&D”) costs incurred by the Company are charged to expense as incurred and are included in operating expenses in the consolidated statements of income. Research and development expense for the three months ended December 31, 2020 and 2019 was $1,884,000 and $1,823,000, respectively. Research and development expense for the six months ended December 31, 2020 and 2019 was $3,773,000 and $3,572,000, respectively.
Income Taxes	Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred income tax expense represents the change during the period in the deferred tax assets and deferred tax liabilities. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company measures and recognizes the tax implications of positions taken or expected to be taken in its tax returns on an ongoing basis.
Net Income per Share	Net Income per Share Basic net income per common share (Basic EPS) is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per common share (Diluted EPS) is computed by dividing net income by the weighted average number of common shares and dilutive common share equivalents and convertible securities then outstanding. The following provides a reconciliation of information used in calculating the per share amounts for the three months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Income ​ Weighted Average Shares ​ Net Income per Share ​ 2020 2019 2020 2019 2020 2019 Basic EPS ​ $ 3,197 ​ $ 3,572 ​ 18,347 ​ 18,478 ​ $ 0.17 ​ $ 0.19 Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ — ​ — ​ 55 ​ 60 ​ — ​ — Diluted EPS ​ $ 3,197 ​ $ 3,572 ​ 18,402 ​ 18,538 ​ $ 0.17 ​ $ 0.19 ​ ​ Options to purchase 32,000 and 36,000 shares of common stock were excluded for the three months ended December 31, 2020 and 2019, respectively, and were not included in the computation of Diluted EPS because their inclusion would be anti-dilutive. These options were still outstanding at the end of the period. ​ The following provides a reconciliation of information used in calculating the per share amounts for the six months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ Net Income per ​ ​ ​ Net Income ​ Shares ​ Share ​ ​ 2020 2019 2020 2019 2020 2019 ​ Basic EPS ​ $ 5,516 ​ $ 6,805 ​ 18,347 ​ 18,478 ​ $ 0.30 ​ $ 0.37 ​ Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ ​ — ​ — 50 59 ​ — ​ — ​ Diluted EPS ​ $ 5,516 ​ $ 6,805 18,397 18,537 ​ $ 0.30 ​ $ 0.37 ​ ​ Options to purchase 36,000 and 18,000 shares of common stock were excluded for the six months ended December 31, 2020 and 2019, respectively, and were not included in the computation of Diluted EPS because their inclusion would be anti-dilutive. These options were still outstanding at the end of the period. ​
Stock-Based Compensation	Stock-Based Compensation The Company has established four share incentive programs as discussed in Note 8. Stock-based compensation cost is measured at the grant date based on the fair value of the award and is recognized as expense on a straight-line basis over the vesting period. Determining the fair value of share-based awards at the grant date requires assumptions and judgments about expected volatility and forfeiture rates, among other factors. Stock-based compensation costs of $84,000 and $308,000 were recognized for the three months ended December 31, 2020 and 2019, respectively. Stock-based compensation costs of $188,000 and $325,000 were recognized for the six months ended December 31, 2020 and 2019, respectively.
Foreign Currency	Foreign Currency The Company has determined the functional currency of all foreign subsidiaries is the U.S. Dollar. All foreign operations are considered a direct and integral part or extension of the Company’s operations. The day-to-day operations of all foreign subsidiaries are dependent on the economic environment of the U.S. Dollar. Therefore, no realized and unrealized gains and losses associated with foreign currency translation are recorded for the three or six months ended December 31, 2020 or 2019.
Comprehensive Income	Comprehensive Income For the three and six months ended December 31, 2020 and 2019, the Company’s operations did not give rise to material items includable in comprehensive income, which were not already included in net income. Accordingly, the Company’s comprehensive income approximates its net income for all periods presented.
Segment Reporting	Segment Reporting The Company’s reportable operating segments are determined based on the Company’s management approach. The management approach is based on the way that the chief operating decision maker organizes the segments within an enterprise for making operating decisions and assessing performance. The Company’s results of operations are reviewed by the chief operating decision maker on a consolidated basis and the Company operates in only one segment. The Company has presented required geographical data in Note 12.
Shipping and Handling Sales and Costs	Shipping and Handling Sales and Costs The Company records the amount billed to customers for shipping and handling in net sales ($93,000 and $108,000 in the three months ended December 31, 2020 and 2019, respectively and $199,000 and $220,000 in the six months ended December 31, 2020 and 2019, respectively); and classifies the costs associated with these revenues in cost of sales ($230,000 and $271,000 in the three months ended December 31, 2020 and 2019, respectively, and $451,000 and $531,000 in the six months ended December 31, 2020 and 2019, respectively).
Leases	Leases Effective July 1, 2019, the Company adopted the new lease accounting standard using the modified retrospective transition option of applying the new standard at the adoption date. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases, and (3) initial direct costs for any existing leases. Adoption of the new standard resulted in the recording of an operating ROU asset and lease liabilities

Nature of Business and Summar_3

Nature of Business and Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Dec. 31, 2020
Nature of Business and Summary of Significant Accounting Policies
Schedule of intangible assets	Changes in intangible assets are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ June 30, 2020 ​ Carrying Accumulated Net book Carrying Accumulated Net book ​ ​ value ​ amortization ​ value ​ value ​ amortization ​ value Customer relationships ​ $ 9,800 ​ $ (8,844) ​ $ 956 ​ $ 9,800 ​ $ (8,732) ​ $ 1,068 Trade name ​ ​ 4,048 ​ (101) ​ 3,947 ​ 4,048 ​ — ​ 4,048 ​ ​ $ 13,848 ​ $ (8,945) ​ $ 4,903 ​ $ 13,848 ​ $ (8,732) ​ $ 5,116 ​
Schedule of earnings per share reconciliation	The following provides a reconciliation of information used in calculating the per share amounts for the three months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Income ​ Weighted Average Shares ​ Net Income per Share ​ 2020 2019 2020 2019 2020 2019 Basic EPS ​ $ 3,197 ​ $ 3,572 ​ 18,347 ​ 18,478 ​ $ 0.17 ​ $ 0.19 Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ — ​ — ​ 55 ​ 60 ​ — ​ — Diluted EPS ​ $ 3,197 ​ $ 3,572 ​ 18,402 ​ 18,538 ​ $ 0.17 ​ $ 0.19 ​ ​ The following provides a reconciliation of information used in calculating the per share amounts for the six months ended December 31 (in thousands, except per share data): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ Net Income per ​ ​ ​ Net Income ​ Shares ​ Share ​ ​ 2020 2019 2020 2019 2020 2019 ​ Basic EPS ​ $ 5,516 ​ $ 6,805 ​ 18,347 ​ 18,478 ​ $ 0.30 ​ $ 0.37 ​ Effect of Dilutive Securities: ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ ​ — ​ — 50 59 ​ — ​ — ​ Diluted EPS ​ $ 5,516 ​ $ 6,805 18,397 18,537 ​ $ 0.30 ​ $ 0.37 ​

Revenue Recognition and Contr_2

Revenue Recognition and Contracts with Customers (Tables)	6 Months Ended
	Dec. 31, 2020
Revenue Recognition and Contracts with Customers
Schedule of disaggregation of revenues	Following is the disaggregation of revenues based on major product lines (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended December 31, ​ Six months ended December 31, ​ 2020 2019 2020 2019 Major Product Lines: ​ ​ ​ ​ ​ ​ Intrusion and access alarm products ​ $ 8,235 ​ $ 7,772 ​ $ 15,560 ​ $ 15,786 Door locking devices ​ 10,781 ​ 12,273 ​ 19,354 ​ 25,180 Services ​ 8,189 ​ 5,784 ​ 15,464 ​ 11,148 Total Revenues ​ $ 27,205 ​ $ 25,829 ​ $ 50,378 ​ $ 52,114

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Dec. 31, 2020
Inventories
Schedule of Inventories, net	Inventories, net of reserves consist of the following, (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, June 30, ​ ​ 2020 ​ 2020 Component parts ​ $ 20,839 ​ $ 22,877 Work-in-process ​ 6,628 ​ 7,276 Finished product ​ 10,569 ​ 11,602 ​ ​ $ 38,036 ​ $ 41,755 ​ ​ ​ ​ ​ ​ ​ Classification of inventories, net of reserves: ​ ​ Current ​ $ 29,383 ​ $ 35,231 Non-current ​ 8,653 ​ 6,524 ​ ​ $ 38,036 ​ $ 41,755

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	6 Months Ended
	Dec. 31, 2020
Property, Plant, and Equipment
Schedule of property, plant and equipment	Property, plant and equipment consist of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 June 30, 2020 ​ Useful Life in Years ​ ​ ​ ​ ​ ​ ​ ​ Land ​ $ 904 ​ $ 904 ​ — Buildings ​ 8,911 ​ 8,911 30 to 40 Molds and dies ​ 7,352 ​ 7,337 3 to 5 Furniture and fixtures ​ 2,792 ​ 2,792 5 to 10 Machinery and equipment ​ 25,253 ​ 24,878 7 to 10 Building improvements ​ 2,173 ​ 2,173 Shorter of the lease term or life of asset ​ ​ 47,385 ​ 46,995 Less: accumulated depreciation and amortization ​ (39,543) ​ (38,907) ​ ​ $ 7,842 ​ $ 8,088

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Dec. 31, 2020
Long-Term Debt
Schedule of debt instruments	Outstanding balances and interest rates as of December 31, 2020 and June 30, 2020 are as follows (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ June 30, 2020 ​ Outstanding Interest Rate Outstanding Interest Rate Revolving line of credit ​ $ — n/a ​ $ — n/a ​ Term loans ​ 3,904 1 % 3,904 1 % ​ ​ 3,904 ​ ​ ​ 3,904 ​ ​ ​ Less: current maturities ​ (1,084) ​ (1,794) ​ Long-term debt ​ $ 2,820 ​ $ 2,110 ​ ​

Stock Options (Tables)

Stock Options (Tables)	6 Months Ended
	Dec. 31, 2020
2012 Employee Stock Option Plan
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of each option granted during the six months ended December 31, 2019 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2019 Risk-free interest rates ​ 1.80% - 2.10 % Expected lives ​ 10 years ​ Expected volatility ​ 45%-46 % Expected dividend yields ​ 0 %
Schedule of Share-based Compensation, Stock Options, Activity	The following table reflects activity under the 2012 Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ ​ ​ Weighted average ​ ​ ​ ​ Weighted average ​ Options exercise price Options exercise price Outstanding, beginning of year ​ ​ 117,840 ​ $ 18.84 ​ ​ 72,500 ​ $ 11.01 Granted ​ ​ — ​ ​ — ​ ​ 28,000 ​ ​ 30.13 Exercised ​ ​ — ​ — ​ — ​ — Outstanding, end of period ​ ​ 117,840 ​ $ 18.84 ​ 100,500 ​ $ 16.34 Exercisable, end of period ​ ​ 47,800 ​ $ 14.66 ​ 48,400 ​ $ 11.10 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ $ 16.57 ​ ​ Total intrinsic value of options exercised ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ ​ Total intrinsic value of options outstanding ​ $ 963,000 ​ ​ ​ ​ $ 1,359,000 ​ ​ Total intrinsic value of options exercisable ​ $ 590,000 ​ ​ ​ ​ $ 895,000 ​ ​
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about stock options outstanding under the 2012 Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average ​ ​ ​ ​ ​ ​ ​ Number ​ remaining ​ Weighted average ​ Number ​ Weighted average Range of exercise prices ​ outstanding ​ contractual life ​ exercise price ​ exercisable ​ exercise price $4.37‑$33.59 ​ 117,840 ​ 7.9 ​ $ 18.84 ​ 47,800 ​ $ 14.66 ​ ​ 117,840 ​ 7.9 ​ $ 18.84 ​ 47,800 ​ $ 14.66
2012 Non-Employee Stock Option Plan
Schedule of Share-based Compensation, Stock Options, Activity	The following table reflects activity under the 2012 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ Weighted average ​ ​ Weighted average ​ ​ Options ​ exercise price ​ Options ​ exercise price Outstanding, beginning of year ​ ​ 12,000 ​ $ 10.29 ​ ​ 10,200 ​ $ 7.99 Exercised ​ ​ — ​ — ​ — ​ — Outstanding, end of period ​ ​ 12,000 ​ $ 10.29 ​ 10,200 ​ $ 7.99 Exercisable, end of period ​ ​ 8,520 ​ $ 9.08 ​ 5,400 ​ $ 7.35 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ Total intrinsic value of options exercised ​ ​ n/a ​ ​ ​ ​ ​ n/a ​ Total intrinsic value of options outstanding ​ $ 191,000 ​ ​ ​ ​ $ 218,000 ​ Total intrinsic value of options exercisable ​ $ 146,000 ​ ​ ​ ​ $ 119,000 ​
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about stock options outstanding under the 2012 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average Weighted ​ Weighted ​ ​ Number ​ remaining ​ average exercise ​ Number ​ average exercise Range of exercise prices ​ outstanding contractual life ​ price ​ exercisable ​ price $4.37 - $23.35 ​ 12,000 ​ 6.7 ​ $ 10.29 ​ 8,520 ​ $ 9.08 ​ ​ 12,000 ​ 6.7 ​ $ 10.29 ​ 8,520 ​ $ 9.08
2018 Non-Employee Stock Option Plan
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of each option granted during the six months ended December 31, 2019 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2019 Risk-free interest rates 1.80 % Expected lives 10 years ​ Expected volatility 45 % Expected dividend yields — %
Schedule of Share-based Compensation, Stock Options, Activity	The following table reflects activity under the 2018 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ ​ ​ Weighted average ​ ​ Weighted average ​ ​ Options exercise price ​ Options exercise price Outstanding, beginning of year ​ ​ 48,400 ​ $ 23.48 ​ ​ 15,200 ​ $ 16.20 Granted ​ ​ — ​ — ​ 16,000 ​ 30.54 Outstanding, end of period ​ ​ 48,400 ​ $ 23.48 ​ 31,200 ​ $ 23.55 Exercisable, end of period ​ ​ 18,640 ​ $ 22.44 ​ 8,800 ​ $ 21.41 Weighted average fair value at grant date of options granted ​ ​ n/a ​ ​ ​ ​ $ 17.40 ​ ​ ​ Total intrinsic value of options exercised ​ n/a ​ ​ ​ ​ ​ n/a ​ ​ ​ Total intrinsic value of options outstanding ​ $ 202,000 ​ ​ ​ ​ $ 200,000 ​ ​ ​ Total intrinsic value of options exercisable ​ $ 98,000 ​ ​ ​ ​ $ 74,000 ​ ​ ​
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about stock options outstanding under the 2018 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ Weighted average Weighted ​ Weighted ​ ​ Number ​ remaining ​ average exercise ​ Number ​ average exercise Range of exercise prices ​ outstanding ​ contractual life ​ price ​ exercisable ​ price $16.20-$30.54 ​ 48,400 8.6 ​ $ 23.48 12,240 ​ $ 22.44 ​ ​ 48,400 8.6 ​ $ 23.48 12,240 ​ $ 22.44
2020 Non-Employee Stock Option Plan
Schedule of Share-based Compensation, Stock Options, Activity	The following table reflects activity under the 2020 Non-Employee Plan for the six months ended December 31,: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ ​ ​ ​ ​ Weighted average ​ Options exercise price Outstanding, beginning of year ​ — ​ — Granted ​ 5,000 ​ $ 22.80 Exercised ​ — ​ — Outstanding, end of period ​ 5,000 ​ $ 22.80 Exercisable, end of period ​ 1,000 ​ $ 22.80 Weighted average fair value at grant date of options granted ​ $ 12.20 ​ Total intrinsic value of options exercised ​ n/a ​ Total intrinsic value of options outstanding ​ $ 17,000 ​ Total intrinsic value of options exercisable ​ $ 3,000 ​
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following table summarizes information about stock options outstanding under the 2020 Non-Employee Plan at December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options outstanding ​ Options exercisable ​ ​ ​ ​ Weighted average ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number ​ remaining ​ Weighted average ​ Number ​ Weighted average Range of exercise prices outstanding contractual life exercise price exercisable exercise price $22.80 5,000 9.7 ​ $ 22.80 1,000 ​ $ 22.80 ​ 5,000 9.7 ​ $ 22.80 1,000 ​ $ 22.80 ​
Fair Value Measurement Inputs and Valuation Techniques	The fair value of each option granted during the six months ended December 31 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: ​ ​ ​ ​ ​ ​ 2020 Risk-free interest rates 0.62 % Expected lives 10 years ​ Expected volatility 45 % Expected dividend yields — % ​

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Dec. 31, 2020
Commitments and Contingencies
Summary of cash payments against operating lease liabilities	Supplemental balance sheet information related to operating leases was as follows: ​ ​ ​ ​ ​ Weighted-average remaining lease term 71 years ​ Weighted-average discount rate ​ 3.55 %
Schedule of maturities of lease liabilities	The following is a schedule, by years, of maturities of lease liabilities as of December 31, 2020 (in thousands): ​ ​ ​ ​ ​ Year Ending June 30, Amount 2021 ​ $ 143 2022 ​ 277 2023 ​ 268 2024 ​ 258 2025 ​ 249 Thereafter ​ ​ 6,189 Total ​ $ 7,384 ​

Geographical Data (Tables)

Geographical Data (Tables)	6 Months Ended
	Dec. 31, 2020
Geographical Data
Schedule Of Revenue From External Customers And Identifiable Assets By Geographical Areas	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended December 31, ​ Six months ended December 31, ​ ​ 2020 2019 2020 2019 ​ Sales to external customers(1): ​ ​ ​ ​ ​ ​ ​ Domestic ​ $ 26,793 ​ $ 25,236 ​ $ 49,682 ​ $ 51,055 ​ Foreign ​ 412 ​ 593 ​ 696 ​ 1,059 ​ Total Net Sales ​ $ 27,205 ​ $ 25,829 ​ $ 50,378 ​ $ 52,114 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 June 30, 2020 Identifiable assets: ​ ​ ​ United States ​ $ 73,635 ​ $ 69,436 Dominican Republic (2) ​ 34,658 ​ 36,402 Total Identifiable Assets ​ $ 108,293 ​ $ 105,838 (1) All of the Company’s sales originate in the United States and are shipped primarily from the Company’s facilities in the United States. There were no sales into any one foreign country in excess of 10% of total Net Sales. (2) Consists primarily of inventories (December 31, 2020 = $23,648; June 30, 2020 = $25,246), operating lease assets (December 31, 2020 = $7,384; June 30, 2020 = $7,395) and fixed assets (December 31, 2020 = $3,276; June 30, 2020 = $3,481) located at the Company's principal manufacturing facility in the Dominican Republic.

Nature of Business and Summar_4

Nature of Business and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	$ 13,848	$ 13,848
Finite-lived intangible assets, Accumulated amortization	(8,945)	(8,732)
Finite-lived intangible assets, Net book value	4,903	5,116
Trade name
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	4,048	4,048
Finite-lived intangible assets, Accumulated amortization	(101)
Finite-lived intangible assets, Net book value	3,947	4,048
Customer relationships
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	9,800	9,800
Finite-lived intangible assets, Accumulated amortization	(8,844)	(8,732)
Finite-lived intangible assets, Net book value	$ 956	$ 1,068

Nature of Business and Summar_5

Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 3,197	$ 3,572	$ 5,516	$ 6,805
Weighted Average Shares, Basic EPS	18,347,000	18,478,000	18,347,000	18,478,000
Stock Options	55,000	60,000	50,000	59,000
Diluted EPS	$ 3,197	$ 3,572	$ 5,516	$ 6,805
Weighted Average Shares, Diluted EPS	18,402,000	18,538,000	18,397,000	18,537,000
Net Income Per Share, Basic	$ 0.17	$ 0.19	$ 0.30	$ 0.37
Net Income Per Share, Diluted	$ 0.17	$ 0.19	$ 0.30	$ 0.37

Nature of Business and Summar_6

Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	Jul. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Significant Accounting Policies [Line Items]
Short-term time deposits		$ 460,000		$ 460,000		$ 460,000
Intangible assets amortization expense		107,000	$ 66,000	213,000	$ 132,000
Estimated amortization expense- 2021		425,000		425,000
Estimated amortization expense- 2022		390,000		390,000
Estimated amortization expense - 2023		362,000		362,000
Estimated amortization expense - 2024		336,000		336,000
Estimated amortization expense - 2025		315,000		$ 315,000
Weighted average remaining amortization period for acquired intangible assets				17 years 2 months 12 days		17 years 6 months
Research and development costs		$ 1,884,000	$ 1,823,000	$ 3,773,000	$ 3,572,000
Antidilutive options outstanding excluded from diluted EPS computations		32,000	36,000	36,000	18,000
Stock-based compensation expense		$ 84,000	$ 308,000	$ 188,000	$ 325,000
Foreign Currency Transaction Gain (Loss), before Tax		0	0	$ 0	0
Number of Operating Segments				1
Cost of Goods and Services Sold		15,802,000	13,702,000	$ 28,283,000	28,469,000
Operating Lease, Liability	$ 7,700,000
Operating Lease, Right-of-Use Asset	$ 7,700,000	7,384,000		7,384,000		$ 7,395,000
Package of practical expedients	true
Selling, General and Administrative Expenses [Member]
Significant Accounting Policies [Line Items]
Advertising and promotion costs		347,000	627,000	690,000	1,141,000
Sales revenue, net [Member] | Shipping and Handling [Member]
Significant Accounting Policies [Line Items]
Cost of Goods and Services Sold		230,000	271,000	451,000	531,000
Cost of sales [Member]
Significant Accounting Policies [Line Items]
Research and development costs		1,884,000	1,823,000	3,773,000	3,572,000
Cost of sales [Member] | Shipping and Handling [Member]
Significant Accounting Policies [Line Items]
Cost of Goods and Services Sold		93,000	$ 108,000	199,000	$ 220,000
Allowance for doubtful accounts current
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance		$ 196,000		$ 196,000		$ 326,000
Trade name
Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life				20 years
Impairment of intangible asset				$ 1,852,000

Revenue Recognition and Contr_3

Revenue Recognition and Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Abstract]
Equipment revenues	$ 19,016	$ 20,045	$ 34,914	$ 40,966
Services	8,189	5,784	15,464	11,148
Total Revenues	27,205	25,829	50,378	52,114
Intrusion and Access alarm products
Disaggregation of Revenue [Abstract]
Equipment revenues	8,235	7,772	15,560	15,786
Door locking devices
Disaggregation of Revenue [Abstract]
Equipment revenues	$ 10,781	$ 12,273	$ 19,354	$ 25,180

Revenue Recognition and Contr_4

Revenue Recognition and Contracts with Customers - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Refund liabilities	$ 3,798,000		$ 3,798,000		$ 3,331,000
Return related assets	$ 792,000		$ 792,000		$ 701,000
Sales Revenue, Product Line
Concentration Risk, Percentage	13.00%	11.00%	11.00%	9.00%

Business and Credit Concentra_2

Business and Credit Concentrations (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Concentration Risk [Line Items]
Percentage Of Single Significant Customer Balance To Total Accounts Receivables	18.00%		18.00%		24.00%
Percentage Of Another Significant Customer Balance To Total Accounts Receivable	12.00%		12.00%
Customer Two
Concentration Risk [Line Items]
Percentage Of Another Significant Customer Balance To Total Accounts Receivable	11.00%		11.00%
Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage	14.00%		10.00%	10.00%
Sales Revenue, Net | Customer One
Concentration Risk [Line Items]
Concentration Risk, Percentage	10.00%	10.00%	10.00%	10.00%	10.00%
Sales Revenue, Net | Customer Two
Concentration Risk [Line Items]
Concentration Risk, Percentage	10.00%	10.00%	10.00%	10.00%	10.00%

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Inventories
Component parts	$ 20,839	$ 22,877
Work-in-process	6,628	7,276
Finished product	10,569	11,602
Total Inventory	38,036	41,755
Current	29,383	35,231
Non-current	8,653	6,524
Total Inventory	$ 38,036	$ 41,755

Property, Plant, and Equipmen_2

Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2020	Jun. 30, 2020
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 47,385	$ 46,995
Less: accumulated depreciation and amortization	(39,543)	(38,907)
Property, plant and equipment, net	7,842	8,088
Land
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 904	904
Property, plant and equipment, useful life	0 years
Buildings
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,911	8,911
Buildings | Minimum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	30 years
Buildings | Maximum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Molds and dies
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,352	7,337
Molds and dies | Minimum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Molds and dies | Maximum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Furniture and fixtures
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,792	2,792
Furniture and fixtures | Minimum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Furniture and fixtures | Maximum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Machinery and equipment
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 25,253	24,878
Machinery and equipment | Minimum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	7 years
Machinery and equipment | Maximum
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Building Improvements
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,173	$ 2,173
Property, plant and equipment, useful life	Shorter of the lease term or life of asset

Property, Plant, and Equipmen_3

Property, Plant, and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Property, Plant, and Equipment
Depreciation and amortization	$ 319,000	$ 311,000	$ 637,000	$ 606,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Income Taxes [Line Items]
Tax benefit	$ 469,000	$ 431,000	$ 798,000	$ 800,000
Unrecognized Tax Benefits, Period Increase (Decrease)			69,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	100,000		100,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	918,000		918,000
Provision for incremental Income tax liability					$ 657,000
Provision for income tax interest			15,000		66,000
Additional interest expense accrued	$ 12,000		$ 12,000
IRS
Income Taxes [Line Items]
Provision for tax, federal					762,000
Provision for tax, state					$ 70,000

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Debt Instrument [Line Items]
Outstanding	$ 3,904	$ 3,904
Less: current maturities	(1,084)	(1,794)
Long-term debt	2,820	2,110
Term loans
Debt Instrument [Line Items]
Outstanding	$ 3,904	$ 3,904
Interest rate	1.00%	1.00%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)	6 Months Ended
	Dec. 31, 2020	Jun. 30, 2020
Debt Instrument [Line Items]
Term of loan (in years)	2 years
Revolving line of credit expiring June 2021
Debt Instrument [Line Items]
Revolving credit loan facility, maximum borrowing capacity	$ 11,000,000
Third Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Percentage of common stock of foreign subsidiaries pledged as collateral	65.00%
Third Amended and Restated Credit Agreement | Variable Interest Rate Option One | Minimum
Debt Instrument [Line Items]
Interest rate over the reference rate	1.15%
Third Amended and Restated Credit Agreement | Variable Interest Rate Option One | Maximum
Debt Instrument [Line Items]
Interest rate over the reference rate	2.00%
Third Amended and Restated Credit Agreement | Variable Interest Rate Option Two
Debt Instrument [Line Items]
Interest rate over the reference rate	0.25%
Paycheck Protection Program
Debt Instrument [Line Items]
Term loan	$ 3,904,000
Aggregate principal amount		$ 3,904,000

Stock Options - Weighted Averag

Stock Options - Weighted Average Assumptions of Black-Scholes Option Pricing Model to Estimate Fair Value of Options Granted (Details)	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
2012 Employee Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected lives		10 years
Expected dividend yields		0.00%
2012 Employee Stock Option Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rates		1.80%
Expected volatility		45.00%
2012 Employee Stock Option Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rates		2.10%
Expected volatility		46.00%
2020 Non-Employee Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rates	0.62%
Expected lives	10 years
Expected volatility	45.00%
2018 Non-Employee Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rates		1.80%
Expected lives		10 years
Expected volatility		45.00%
Expected dividend yields		0.00%

Stock Options - Reflects activi

Stock Options - Reflects activity (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
2012 Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year			117,840	72,500	72,500
Granted			0	28,000
Exercised	0	0	0	0
Outstanding, end of period	117,840	100,500	117,840	100,500	117,840
Exercisable, end of period	47,800	48,400	47,800	48,400
Weighted average fair value at grant date of options granted				$ 16.57
Total intrinsic value of options outstanding	$ 963,000	$ 1,359,000	$ 963,000	$ 1,359,000
Total intrinsic value of options exercisable	$ 590,000	$ 895,000	$ 590,000	$ 895,000
Outstanding, beginning of year, weighted average exercise price			$ 18.84	$ 11.01	$ 11.01
Granted, weighted average exercise price				30.13
Outstanding, end of period, weighted average exercise price	$ 18.84	$ 16.34	18.84	16.34	$ 18.84
Exercisable, end of period, weighted average exercise price	$ 14.66	$ 11.10	$ 14.66	$ 11.10
2012 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year			12,000	10,200	10,200
Exercised	0	0	0	0
Outstanding, end of period	12,000	10,200	12,000	10,200	12,000
Exercisable, end of period	8,520	5,400	8,520	5,400
Total intrinsic value of options outstanding	$ 191,000	$ 218,000	$ 191,000	$ 218,000
Total intrinsic value of options exercisable	$ 146,000	$ 119,000	$ 146,000	$ 119,000
Outstanding, beginning of year, weighted average exercise price			$ 10.29	$ 7.99	$ 7.99
Exercised, weighted average exercise price			0
Outstanding, end of period, weighted average exercise price	$ 10.29	$ 7.99	10.29	7.99	$ 10.29
Exercisable, end of period, weighted average exercise price	$ 9.08	$ 7.35	$ 9.08	$ 7.35
2018 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year			48,400	15,200	15,200
Granted	0		0	16,000
Exercised	0	0	0	0
Outstanding, end of period	48,400	31,200	48,400	31,200	48,400
Exercisable, end of period	18,640	8,800	18,640	8,800
Weighted average fair value at grant date of options granted				$ 17.40
Total intrinsic value of options outstanding	$ 202,000	$ 200,000	$ 202,000	$ 200,000
Total intrinsic value of options exercisable	$ 98,000	$ 74,000	$ 98,000	$ 74,000
Outstanding, beginning of year, weighted average exercise price			$ 23.48	$ 16.20	$ 16.20
Granted, weighted average exercise price				30.54
Outstanding, end of period, weighted average exercise price	$ 23.48	$ 23.55	23.48	23.55	$ 23.48
Exercisable, end of period, weighted average exercise price	$ 22.44	$ 21.41	$ 22.44	$ 21.41
2020 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			5,000
Exercised	0	0	0	0
Outstanding, end of period	5,000		5,000
Exercisable, end of period	1,000		1,000
Weighted average fair value at grant date of options granted			$ 12.20
Total intrinsic value of options outstanding	$ 17,000		$ 17,000
Total intrinsic value of options exercisable	$ 3,000		$ 3,000
Granted, weighted average exercise price			$ 22.80
Outstanding, end of period, weighted average exercise price	$ 22.80		22.80
Exercisable, end of period, weighted average exercise price	$ 22.80		$ 22.80

Stock Options - Stock options o

Stock Options - Stock options outstanding under the 2012 Employee Plan (Details)	6 Months Ended
	Dec. 31, 2020$ / sharesshares
2012 Employee Stock Option Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	117,840
Options outstanding, Weighted average remaining contractual life	7 years 10 months 24 days
Options outstanding, Weighted average exercise price | $ / shares	$ 18.84
Options exercisable, Number exercisable | shares	47,800
Options exercisable, Weighted average exercise price | $ / shares	$ 14.66
2012 Employee Stock Option Plan | Exercise price range $4.37 - $33.59
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	117,840
Options outstanding, Weighted average remaining contractual life	7 years 10 months 24 days
Options outstanding, Weighted average exercise price | $ / shares	$ 18.84
Options exercisable, Number exercisable | shares	47,800
Options exercisable, Weighted average exercise price | $ / shares	$ 14.66
2012 Non-Employee Stock Option Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	12,000
Options outstanding, Weighted average remaining contractual life	6 years 8 months 12 days
Options outstanding, Weighted average exercise price | $ / shares	$ 10.29
Options exercisable, Number exercisable | shares	8,520
Options exercisable, Weighted average exercise price | $ / shares	$ 9.08
2012 Non-Employee Stock Option Plan | Exercise price range $4.37 - $23.35
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	12,000
Options outstanding, Weighted average remaining contractual life	6 years 8 months 12 days
Options outstanding, Weighted average exercise price | $ / shares	$ 10.29
Options exercisable, Number exercisable | shares	8,520
Options exercisable, Weighted average exercise price | $ / shares	$ 9.08
2018 Non-Employee Stock Option Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	48,400
Options outstanding, Weighted average remaining contractual life	8 years 7 months 6 days
Options outstanding, Weighted average exercise price | $ / shares	$ 23.48
Options exercisable, Number exercisable | shares	12,240
Options exercisable, Weighted average exercise price | $ / shares	$ 22.44
2018 Non-Employee Stock Option Plan | Exercise price range $16.20 - $30.54
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	48,400
Options outstanding, Weighted average remaining contractual life	8 years 7 months 6 days
Options outstanding, Weighted average exercise price | $ / shares	$ 23.48
Options exercisable, Number exercisable | shares	12,240
Options exercisable, Weighted average exercise price | $ / shares	$ 22.44
2020 Non-Employee Stock Option Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	5,000
Options outstanding, Weighted average remaining contractual life	9 years 8 months 12 days
Options outstanding, Weighted average exercise price | $ / shares	$ 22.80
Options exercisable, Number exercisable | shares	1,000
Options exercisable, Weighted average exercise price | $ / shares	$ 22.80
2020 Non-Employee Stock Option Plan | Exercise price range $22.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number outstanding | shares	5,000
Options outstanding, Weighted average remaining contractual life	9 years 8 months 12 days
Options outstanding, Weighted average exercise price | $ / shares	$ 22.80
Options exercisable, Number exercisable | shares	1,000
Options exercisable, Weighted average exercise price | $ / shares	$ 22.80

Stock Options - Additional Info

Stock Options - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock options that vested during the period	$ 18,000	$ 13,000	$ 18,000	$ 13,000
Allocated Share Based Compensation Expense	$ 84,000	$ 308,000	$ 188,000	$ 325,000
Stock-based compensation costs, effect on EPS	$ 0	$ 0.02	$ 0.01	$ 0.02
2012 Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under the plan	950,000		950,000
Percentage Applied To Market Price To Set Grant Price For Grantee Owning Ten Percent Or More Of Entity Common Stock Outstanding			110.00%
Term of stock option awards			10 years
Annual rate at which share-based compensation awards vest			20.00%
Number of stock options, exercisable	47,800	48,400	47,800	48,400
Number of stock options available for grant	731,960		731,960
Unearned stock-based compensation cost related to non-vested awards	$ 748,000		$ 748,000
Fair value of stock options that vested during the period	$ 106,000	$ 133,000		$ 135,000	$ 150,000
Fair value of stock options that vested during the period (shares)	10,400	13,000	12,800	14,600
Tax benefit from ISO option exercise	$ 0	$ 0	$ 0	$ 0
Number of shares outstanding, end of period	117,840	100,500	117,840	100,500		117,840	72,500
Common Stock, Voting Rights			Any plan participant who is granted ISOs and possesses more than 10% of the voting rights of the Company’s outstanding common stock
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0	28,000
2012 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under the plan	50,000		50,000
Term of stock option awards			10 years
Annual rate at which share-based compensation awards vest			20.00%
Number of stock options, exercisable	8,520	5,400	8,520	5,400
Number of stock options available for grant	0		0
Unearned stock-based compensation cost related to non-vested awards	$ 24,000		$ 24,000
Fair value of stock options that vested during the period (shares)	2,760	2,400	2,760	2,400
Tax benefit from ISO option exercise	$ 0	$ 0	$ 0	$ 0
Number of shares outstanding, end of period	12,000	10,200	12,000	10,200		12,000	10,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0	0	0
Proceeds from stock option exercises	$ 0	$ 0	$ 0	$ 0
2018 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under the plan	50,000		50,000
Term of stock option awards			10 years
Annual rate at which share-based compensation awards vest			20.00%
Number of stock options, exercisable	18,640	8,800	18,640	8,800
Number of stock options available for grant	0	16,000	0	16,000
Unearned stock-based compensation cost related to non-vested awards	$ 344,000		$ 344,000
Fair value of stock options that vested during the period	$ 88,000	$ 88,000	$ 88,000	$ 88,000
Fair value of stock options that vested during the period (shares)	6,400	6,400	6,400	6,400
Tax benefit from ISO option exercise	$ 0	$ 0	$ 0	$ 0
Number of shares outstanding, end of period	48,400	31,200	48,400	31,200		48,400	15,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0		0	16,000
Proceeds from stock option exercises	$ 0	$ 0	$ 0	$ 0
2020 Non-Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under the plan	50,000		50,000
Term of stock option awards			10 years
Annual rate at which share-based compensation awards vest			20.00%
Number of stock options, exercisable	1,000		1,000
Number of stock options available for grant	45,000		45,000
Number of stock options available for grant	0		5,000
Unearned stock-based compensation cost related to non-vested awards	$ 43,000		$ 43,000
Fair value of stock options that vested during the period			$ 12,000
Fair value of stock options that vested during the period (shares)	0		1,000
Tax benefit from ISO option exercise	$ 0	$ 0	$ 0	$ 0
Number of shares outstanding, end of period	5,000		5,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			5,000
Proceeds from stock option exercises	$ 0	$ 0	$ 0	$ 0

Stockholders' Equity Transact_2

Stockholders' Equity Transactions (Details) - $ / shares	6 Months Ended	12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Sep. 16, 2014
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			1,000,000
Common Stock Shares Outstanding	18,347,351	18,347,351	19,400,000
Stock Repurchased During Period, Shares	0
Treasury Stock Acquired, Average Cost Per Share		$ 16.99
Employees and Directors [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Options Exercised (in shares)		15,600
Stock Issued During Period Shares Cashless Exercise of Stock Options		3,600
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period		1,628
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired		144,405

Related Party Transaction (Deta

Related Party Transaction (Details) - USD ($)	Dec. 21, 2020	Dec. 15, 2020
Secondary offering
Equity, Class of Treasury Stock [Line Items]
Shares of common stock issued		2,333,071
Offering price	$ 26
Proceeds from the offering		$ 0
Offering expenses		$ 289,000
Over allotment
Equity, Class of Treasury Stock [Line Items]
Shares of common stock issued	334,961

401(k) Plan (Details)

401(k) Plan (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Napco Technologies 401 k Plan
Schedule of Deferred Compensation Plans [Line Items]
Deferred compensation plan expense	$ 36,000	$ 34,000	$ 68,000	$ 64,000

Commitments and Contingencies -

Commitments and Contingencies - Weighted - average lease term (Details)	Dec. 31, 2020
Commitments and Contingencies
Weighted-average remaining lease term	71 years
Weighted-average discount rate	3.55%

Commitments and Contingencies_2

Commitments and Contingencies - Lease liabilities (Details) $ in Thousands	Dec. 31, 2020USD ($)
Schedule, by years, of maturities of lease liabilities
2021	$ 143
2022	277
2023	268
2024	258
2025	249
There after	6,189
Total	$ 7,384

Commitments and Contingencies_3

Commitments and Contingencies - Additional Information (Details) - USD ($)	Jul. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Lease, Practical Expedients, Package [true false]	true
Operating lease right of use asset	$ 7,700,000	$ 7,384,000		$ 7,384,000		$ 7,395,000
Operating lease liability	7,700,000
Operating Lease Payments		72,000	$ 72,000	144,000	$ 168,000
Accounting Standards Update 2016-02 [Member]
Lessee, Lease, Description [Line Items]
Operating lease right of use asset	7,700,000
Operating lease liability	$ 7,700,000
Employment Agreements [Member] | Chief executive officer [Member]
Lessee, Lease, Description [Line Items]
Annual salary commitment				$ 752,000
Termination pay commitment rate applied to the average of the prior five calendar years compensation				299.00%
Employment Agreements [Member] | Senior Vice President of Engineering [Member]
Lessee, Lease, Description [Line Items]
Annual salary commitment				$ 333,798
Employment and Severance Agreements [Member] | Senior Vice President of Engineering [Member]
Lessee, Lease, Description [Line Items]
Expiration Year				2022
Land lease in Dominican Republic expiring 2092 [Member]
Lessee, Lease, Description [Line Items]
Expiration Year				2092
Annual minimum rent		$ 288,000		$ 288,000
Lessee, Operating Lease, Term of Contract		99 years		99 years
Leased property and equipment, excluding foreign land [Member]
Lessee, Lease, Description [Line Items]
Operating lease expense		$ 79,000	$ 79,000	$ 158,000	$ 158,000

Geographical Data (Details)

Geographical Data (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	$ 27,205	$ 25,829	$ 50,378	$ 52,114
Total Identifiable Assets	108,293		108,293		$ 105,838
Domestic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	26,793	25,236	49,682	51,055
Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	412	$ 593	696	$ 1,059
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Identifiable Assets	73,635		73,635		69,436
Dominican Republic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Identifiable Assets	$ 34,658		$ 34,658		$ 36,402

Geographical Data - Additional

Geographical Data - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020	Jul. 01, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Inventories, net	$ 29,383	$ 35,231
Operating lease asset	7,384	7,395	$ 7,700
Fixed assets	7,842	8,088
Dominican Republic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Inventories, net	23,648	25,246
Operating lease asset	7,384	7,395
Fixed assets	$ 3,276	$ 3,481