Apyx Medical (APYX) 10-K 31 Mar 21 2020 FY Annual report Financial data

Cover

Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 29, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	0-12183
Entity Registrant Name	APYX MEDICAL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-2644611
Entity Address, Address Line One	5115 Ulmerton Road
Entity Address, City or Town	Clearwater
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33760
City Area Code	727
Local Phone Number	384-2323
Title of 12(b) Security	Common Stock, $.001 Par Value
Trading Symbol	APYX
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 189.8
Entity Common Stock, Shares Outstanding		34,317,863
Entity Central Index Key	0000719135
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 41,915	$ 58,812
Trade accounts receivable, net of allowance of $300 and $273	8,399	7,987
Income tax receivables	7,654	426
Other receivables	1,275	1,233
Inventories, net of provision for obsolescence of $388 and $392	4,051	5,068
Prepaid expenses and other current assets	2,795	3,207
Total current assets	66,089	76,733
Property and equipment, net	6,541	6,618
Operating lease right-of-use assets	237	350
Finance lease right-of-use assets	437	653
Other assets	807	391
Total assets	74,111	84,745
Current liabilities:
Accounts payable	1,511	2,438
Accrued expenses and other current liabilities	7,278	9,396
Current portion of operating lease liabilities	126	108
Current portion of finance lease liabilities	238	229
Related party note payable	0	140
Total current liabilities	9,153	12,311
Long-term operating lease liabilities	129	235
Long-term finance lease liabilities	183	421
Contract liabilities	621	405
Other liabilities	166	114
Total liabilities	10,252	13,486
COMMITMENTS AND CONTINGENCIES (NOTE 18)
EQUITY
Common stock, $0.001 par value; 75,000,000 shares authorized; 34,289,222 issued and outstanding as of December 31, 2020, and 34,312,527 issued and 34,169,952 outstanding as of December 31, 2019	34	34
Additional paid-in capital	61,066	56,708
Retained earnings	2,621	14,517
Total stockholders’ equity	63,721	71,259
Non-controlling interest	138	0
Total equity	63,859	71,259
Total liabilities and equity	$ 74,111	$ 84,745

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 300	$ 273
Provision for obsolescence	$ 388	$ 392
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares outstanding (in shares)	34,289,222	34,169,952
Common stock, shares issued (in shares)	34,289,222	34,312,527

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Sales	$ 27,711	$ 28,235
Cost of sales	10,207	9,141
Gross profit	17,504	19,094
Other costs and expenses:
Research and development	3,920	3,731
Professional services	7,350	8,507
Salaries and related costs	14,630	14,025
Selling, general and administrative	11,687	13,700
Total other costs and expenses	37,587	39,963
Loss from operations	(20,083)	(20,869)
Interest income	241	1,392
Interest expense	(46)	(8)
Other income (loss), net	479	(351)
Total other income, net	674	1,033
Loss from operations before income taxes	(19,409)	(19,836)
Income tax benefit	(7,503)	(130)
Net loss	(11,906)	(19,706)
Net loss attributable to non-controlling interest	(10)	0
Net loss attributable to stockholders	$ (11,896)	$ (19,706)
Loss per share
Basic and Diluted (in dollars per share)	$ (0.35)	$ (0.58)
Weighted average number of shares outstanding - basic and diluted (in shares)	34,212	34,069

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Non-controlling interest equity
Beginning balance (in shares) at Dec. 31, 2018		33,705
Beginning balance at Dec. 31, 2018	$ 87,177	$ 34	$ 52,920	$ 34,223	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued on stock options exercised for cash (in shares)		61
Shares issued on stock options exercised for cash	207		207
Stock based compensation	3,581		3,581
Shares issued on net settlement of stock options (in shares)		223
Vested restricted stock issued (in shares)		181
Net loss	(19,706)			(19,706)
Ending balance (in shares) at Dec. 31, 2019		34,170
Ending balance at Dec. 31, 2019	71,259	$ 34	56,708	14,517	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions from non-controlling interest	148				148
Shares issued on stock options exercised for cash (in shares)		27
Shares issued on stock options exercised for cash	148		148
Stock based compensation	4,210		4,210
Shares issued on net settlement of stock options (in shares)		47
Vested restricted stock issued (in shares)		45
Net loss	(11,906)			(11,896)	(10)
Ending balance (in shares) at Dec. 31, 2020		34,289
Ending balance at Dec. 31, 2020	$ 63,859	$ 34	$ 61,066	$ 2,621	$ 138

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (11,906)	$ (19,706)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	887	754
Provision for inventory obsolescence	506	132
Provision for product warranties	215	321
Loss on disposal of property and equipment	13	89
Stock based compensation	4,210	3,581
Realized and unrealized gains on short term investments	0	(164)
Provision (benefit) for allowance for doubtful accounts	262	(163)
Changes in current assets and liabilities:
Trade receivables	(558)	(3,970)
Income tax receivables	(7,228)	180
Prepaid expenses and other assets	27	586
Inventories	615	(2,367)
Accounts payable	(965)	1,054
Accrued expenses and other liabilities	(2,090)	2,370
Net cash used in operating activities	(16,066)	(18,475)
Cash flows from investing activities
Purchases of property and equipment	(581)	(1,301)
Purchases of marketable securities	0	(18,884)
Proceeds of marketable securities	0	80,726
Net cash (used in) provided by investing activities	(581)	60,541
Cash flows from financing activities
Proceeds from stock option exercises	148	207
Repayment of related party note payable	(140)	0
Repayment of finance lease liabilities	(229)	(60)
Contributions from non-controlling interests	148	0
Net cash (used in) provided by financing activities	(73)	147
Effect of exchange rates on cash	(177)	3
Net change in cash and cash equivalents	(16,897)	42,216
Cash and cash equivalents, beginning of year	58,812	16,596
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	41,915	58,812
Cash paid for:
Interest expense	46	8
Income taxes	82	325
Non cash operating and investing activities:
Transfer of other assets to fixed assets	0	42
Transfer of inventory to fixed assets	$ 23	$ 277

DESCRIPTION OF BUSINESS

DESCRIPTION OF BUSINESS	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS	DESCRIPTION OF BUSINESS Apyx Medical Corporation (“Company", "Apyx", "it" and similar terms) was incorporated in 1982, under the laws of the State of Delaware and has its principal executive office at 5115 Ulmerton Road, Clearwater, FL 33760. The Company is an advanced energy technology company with a passion for elevating people’s lives through innovative products in the cosmetic and surgical markets. Known for its innovative Helium Plasma Technology, Apyx is solely focused on bringing transformative solutions to the physicians and patients they serve. It's Helium Plasma Technology is marketed and sold as Renuvion® in the cosmetic surgery market and J-Plasma® in the hospital surgical market. Renuvion® offers plastic surgeons, fascial plastic surgeons and cosmetic physicians a unique ability to provide controlled heat to the tissue to achieve their desired results. The J-Plasma® system allows surgeons to operate with a high level of precision, virtually eliminating unintended tissue trauma. The Company also leverages its deep expertise and decades of experience in unique waveforms through original equipment manufacturing (OEM) agreements with other medical device manufacturers.

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	SIGNIFICANT ACCOUNTING POLICIES Consolidated Financial Statements The accompanying consolidated financial statements include the accounts of Apyx, its wholly owned subsidiary, Apyx Bulgaria, EOOD, and its 51% owned subsidiary, Apyx SY Medical Devices (Ningbo) Co., Ltd. (collectively, "Apyx," or the “Company”). All significant intercompany transactions and balances have been eliminated in consolidation. Use of Estimates in the Preparation of Financial Statements The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The reported amounts of revenues and expenses during the reporting period may be affected by the estimates and assumptions the Company is required to make. Cash and Cash Equivalents Holdings of highly liquid investments with original maturities of three months or less from the date of purchase are considered to be cash equivalents. As of December 31, 2020 and 2019, all of the Company’s U.S. Treasury Bills have original maturities of three months or less and are included in cash and cash equivalents. Concentration of Credit Risk Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of trade accounts receivable. With respect to cash, the Company frequently maintains cash and cash equivalent balances in excess of federally insured limits; it has not experienced any losses in such accounts. Trade Accounts Receivable and Allowance for Doubtful Accounts The Company's standard credit terms for billings range from net 10 days to net 90 days, depending on the customer agreement. Accounts receivable are determined to be past due if payments are not made in accordance with such agreements and an allowance is generally recorded for accounts that become three months past due, or sooner if there are other indicators that the receivables may not be recovered. Customary collection efforts are initiated, and receivables are written off when the Company determines they are not collectible and abandons these collection efforts. The Company evaluates the allowance for doubtful accounts on a regular basis for adequacy based upon its periodic review of the collectability of the receivables in light of historical experience, adverse situations that may affect its customers’ ability to pay and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. Management believes that the allowances for doubtful accounts of approximately $0.3 million at December 31, 2020 and 2019, are adequate to provide for possible bad debts. Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined on a first in, first out basis. Finished goods and work-in-process inventories include material, labor and overhead costs. Factory overhead costs are allocated to manufactured inventory based upon labor hours. The Company monitors inventory usage to determine if the carrying value of any items should be adjusted due to lack of demand for the item and adjusts inventory for estimated obsolescence or unusable inventory equal to the difference between the cost of inventory and the estimated net realizable value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by management, additional inventory write-downs may be required. Property and Equipment Property and equipment are recorded at cost. Depreciation and amortization are provided for using the straight-line method over the estimated useful lives of the assets. The amortization of leasehold improvements is based on the shorter of the lease term or the life of the improvement. Betterments and major improvements, which extend the life of the asset, are capitalized, whereas maintenance and repairs and routine improvements are expensed as incurred. The estimated useful lives are: buildings and improvements, 39 years; machinery and equipment, 3-10 years; furniture and fixtures, 5-10 years; computer equipment and software, 3-5 years; and molds, 7-15 years. Valuation of Long-Lived Assets The Company reviews long-lived assets for recoverability if events or changes in circumstances indicate that the assets may have been impaired. This circumstance exists when the carrying amount of the asset exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. In those cases, an impairment loss is recognized to the extent that the assets’ carrying amount exceeds its fair value. Any impairment losses are not restored in the future if the fair value increases. At December 31, 2020, the Company believes the remaining carrying values of its long-lived assets are recoverable. Product Warranties The Company provides a four year limited warranty on end-user sales of its Renuvion®/J-Plasma® generators, a two year warranty on mounting fixtures, and a one-year warranty on certain accessories. The Company estimates and provides for future costs for product warranties in cost of sales at the time revenue is recognized. The Company bases its product warranty costs on related material costs, repair labor costs and shipping costs. The Company estimates the future cost of product warranties by considering historical material, repair labor, and shipping costs, and applying the experience rates to the outstanding warranty period for products sold. It is reasonably possible that actual results could differ from those estimates. Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration that the Company expects to receive for those goods or services. To recognize revenue, the Company (i) identifies the contract(s) with a customer; (ii) identifies the performance obligations in the contract; (iii) determines the transaction price; (iv) allocates the transaction price to the performance obligations in the contract; and (v) recognizes revenue when, or as, it satisfies the performance obligation(s). For sales of the Company's Advanced Energy products (Renuvion®/J-Plasma®), this is at a point in time when title has been transferred to the customer, which is generally at the time of shipment or receipt by customer for FOB destination terms. For sales of products under its OEM agreements, the Company recognizes revenue over time when no alternative use exists for the manufactured goods and the Company has rights to payment. Presently, the Company does not stock any significant completed goods under its OEM agreements, accordingly, the recognition of revenue under these agreements approximates point in time recognition. The following policies apply to its major categories of revenue transactions: • The majority of sales to customers are evidenced by firm purchase orders. Generally, title and the risks and rewards of ownership are transferred to the customer when the product is shipped. Payment by the customer is due under fixed payment terms. • Product returns are only accepted at the Company's discretion and in accordance with its “Returned Goods Policy”. Historically, the level of product returns has not been significant. Accruals for sales returns, rebates and allowances are made as a reduction of revenue based upon an analysis of historical customer returns and credits, rebates, discounts and current market conditions. • The terms of sale to customers generally do not include any obligations to perform future services. Limited warranties are generally provided for sales and provisions for warranty are provided at the time of product sale based upon an analysis of historical data. • In connection with the execution of OEM supply agreements, the Company may enter into an accompanying product development agreement. If the Company enters into a product development agreement, and development of the goods does not represent a performance obligation on a standalone basis, the Company defers the development fees billed to customers and the associated costs. At December 31, 2020 and 2019, respectively, the Company had recorded approximately $0.6 million and $0.4 million of contract liabilities and $0.2 million and $0.1 million of contract assets related to the deferral of revenues and expenses under these agreements. Recognition of the deferred billings and costs will occur as the Company performs on the accompanying supply arrangements. Advertising Costs Advertising costs are expensed as incurred. The amounts of advertising costs, including trade shows, were approximately $0.8 million and $1.5 million for the years ended December 31, 2020 and 2019, respectively. Stock-Based Compensation The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718, Compensation-Stock Compensation . FASB ASC 718 requires recognizing compensation expense for all share-based payment awards made to employees, directors and non-employees based upon the awards’ grant date fair value. It accounts for forfeitures as they occur. The standard covers employee stock options, restricted stock and other equity awards. The Company utilizes a Black-Scholes model to estimate the grant date fair value of stock option awards. For employee and director awards, compensation expense is recognized on a straight-line basis over the vesting periods. For non-employee awards, compensation expense is recorded for non-forfeitable, fully vested awards at the grant date. For other awards granted to non-employees, compensation cost is recognized as services are provided, which approximates a straight-line basis over the vesting period. Litigation Contingencies In accordance with authoritative guidance, the Company accrues a liability in its consolidated financial statements for these actions when a loss is known or considered probable and the amount can be reasonably estimated. If the reasonable estimate of a known or probable loss is a range, and no amount within the range is a better estimate than any other, the minimum amount of the range is accrued. If a loss is reasonably possible, but not known or probable, and can be reasonably estimated, the estimated loss or range of loss is disclosed in the notes to the consolidated financial statements. In most cases, significant judgment is required to estimate the amount and timing of a loss to be recorded; actual results may differ from those estimates. Income (Loss) Per Share The Company computes basic (loss) earnings attributable to common stockholders per share by dividing net (loss) income attributable to common stockholders by the weighted average number of common shares outstanding for the reporting period. Diluted (loss) earnings per share attributable to common stockholders gives effect to all potential dilutive shares outstanding during the period. The number of dilutive shares is calculated using the treasury stock method which reduces the effective number of shares by the amount of shares the Company could purchase with the proceeds of assumed exercises. Anti-dilutive units are excluded from the calculation of diluted shares. In periods of loss, all potentially dilutive units are anti-dilutive and are excluded from the calculation of diluted income (loss) per share. Research and Development Costs Research and development expenses are charged to operations as incurred. Income Taxes The Company utilizes the liability method of accounting for income taxes as set forth in FASB ASC Topic 740, "Income Taxes". Under the liability method, deferred taxes are determined based on temporary differences between the financial statement and tax bases of assets and liabilities using tax rates expected to be in effect during the years in which the deferred taxes reverse. The Company accounts for interest and penalties on income taxes as income tax expense. A valuation allowances is recorded when it is more likely than not that a tax benefit will not be realized. In determining the need for valuation allowances the Company considers projected future taxable income, the timing of reversals of temporary differences, and the availability of tax planning strategies. As of December 31, 2020 and 2019, the Company recorded a valuation allowance on the net deferred tax asset. The Company assesses the realizability of deferred tax assets each reporting period and will be able to reduce the valuation allowance to the extent the financial results of continuing operations improve, and it becomes more likely than not that the deferred tax assets will be realizable. As Management expects the Company to continue to generate losses in the foreseeable future after 2020, the Company will continue to record a full valuation allowance on the net deferred tax assets as of December 31, 2020. As a result of the CARES ACT, during 2020, the Company released the valuation allowance on the Federal NOLs that can now be carried back to prior taxable years. The Company assesses the financial statement impact of an uncertain tax position taken or expected to be taken on an income tax return at the largest amount that is more-likely-than-not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized in the financial statements unless it is more likely than not of being sustained. Foreign Currency Transactions The functional currency of Apyx Bulgaria is the U.S. dollar. The monetary assets and liabilities that are denominated in a currency other than U.S. dollar are remeasured into U.S. dollars at the exchange rate on the balance sheet date, while nonmonetary items are remeasured at historical rates. Revenue and expenses are remeasured at weighted average exchange rates during the period. Transaction gains and losses that arise from exchange rate fluctuations on transactions denominated in a currency other than the functional currency are included in selling, general and administrative expenses in the Consolidated Statements of Operations and were not material for the years ended December 31, 2020 and 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326). The update changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, contract assets, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. This update, as originally issued, was effective for annual and interim periods beginning after December 15, 2019, with early adoption permitted. In November 2019, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) Effective Dates , which deferred the effective dates of these standards for Smaller Reporting Companies until fiscal years beginning after December 15, 2022. The Company currently expects to continue to qualify as a Smaller Reporting Company, based upon the current SEC definition and, as a result, will be utilizing the deferred elective date. While the Company is in the process of determining the effects of the adoption of the standard on the consolidated financial statements, it does not expect the impact to be material. No other new accounting pronouncement issued or effective during the fiscal year had or is expected to have a material impact on the Company's consolidated financial statements or disclosures.

CHANGE IN ACCOUNTING POLICY

CHANGE IN ACCOUNTING POLICY	12 Months Ended
	Dec. 31, 2020
Accounting Changes and Error Corrections [Abstract]
CHANGE IN ACCOUNTING POLICY	CHANGE IN ACCOUNTING POLICY During 2019, the Company began granting stock option awards deeper within the organization. It does not have sufficient experience with grants to these employees and has experienced challenges in developing reliable forfeiture estimates at the grant date. Accounting for revising the forfeiture estimates has been burdensome. Accounting Standards Codification 718, Compensation- Stock Compensation , prescribes two methods for accounting for forfeitures on stock option awards, either the estimation method utilized by the Company previously, or by accounting for forfeitures as they occur. On January 1, 2020, the Company made an accounting policy election change and began accounting for forfeitures on stock option awards using actual forfeitures. This accounting policy election change was made on a retrospective basis. However, the changes to the current and prior period were determined to be immaterial and there have been no changes to previously reported results as a result of the change.

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	12 Months Ended
	Dec. 31, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	SIGNIFICANT ACCOUNTING POLICIES Consolidated Financial Statements The accompanying consolidated financial statements include the accounts of Apyx, its wholly owned subsidiary, Apyx Bulgaria, EOOD, and its 51% owned subsidiary, Apyx SY Medical Devices (Ningbo) Co., Ltd. (collectively, "Apyx," or the “Company”). All significant intercompany transactions and balances have been eliminated in consolidation. Use of Estimates in the Preparation of Financial Statements The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The reported amounts of revenues and expenses during the reporting period may be affected by the estimates and assumptions the Company is required to make. Cash and Cash Equivalents Holdings of highly liquid investments with original maturities of three months or less from the date of purchase are considered to be cash equivalents. As of December 31, 2020 and 2019, all of the Company’s U.S. Treasury Bills have original maturities of three months or less and are included in cash and cash equivalents. Concentration of Credit Risk Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of trade accounts receivable. With respect to cash, the Company frequently maintains cash and cash equivalent balances in excess of federally insured limits; it has not experienced any losses in such accounts. Trade Accounts Receivable and Allowance for Doubtful Accounts The Company's standard credit terms for billings range from net 10 days to net 90 days, depending on the customer agreement. Accounts receivable are determined to be past due if payments are not made in accordance with such agreements and an allowance is generally recorded for accounts that become three months past due, or sooner if there are other indicators that the receivables may not be recovered. Customary collection efforts are initiated, and receivables are written off when the Company determines they are not collectible and abandons these collection efforts. The Company evaluates the allowance for doubtful accounts on a regular basis for adequacy based upon its periodic review of the collectability of the receivables in light of historical experience, adverse situations that may affect its customers’ ability to pay and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. Management believes that the allowances for doubtful accounts of approximately $0.3 million at December 31, 2020 and 2019, are adequate to provide for possible bad debts. Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined on a first in, first out basis. Finished goods and work-in-process inventories include material, labor and overhead costs. Factory overhead costs are allocated to manufactured inventory based upon labor hours. The Company monitors inventory usage to determine if the carrying value of any items should be adjusted due to lack of demand for the item and adjusts inventory for estimated obsolescence or unusable inventory equal to the difference between the cost of inventory and the estimated net realizable value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by management, additional inventory write-downs may be required. Property and Equipment Property and equipment are recorded at cost. Depreciation and amortization are provided for using the straight-line method over the estimated useful lives of the assets. The amortization of leasehold improvements is based on the shorter of the lease term or the life of the improvement. Betterments and major improvements, which extend the life of the asset, are capitalized, whereas maintenance and repairs and routine improvements are expensed as incurred. The estimated useful lives are: buildings and improvements, 39 years; machinery and equipment, 3-10 years; furniture and fixtures, 5-10 years; computer equipment and software, 3-5 years; and molds, 7-15 years. Valuation of Long-Lived Assets The Company reviews long-lived assets for recoverability if events or changes in circumstances indicate that the assets may have been impaired. This circumstance exists when the carrying amount of the asset exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. In those cases, an impairment loss is recognized to the extent that the assets’ carrying amount exceeds its fair value. Any impairment losses are not restored in the future if the fair value increases. At December 31, 2020, the Company believes the remaining carrying values of its long-lived assets are recoverable. Product Warranties The Company provides a four year limited warranty on end-user sales of its Renuvion®/J-Plasma® generators, a two year warranty on mounting fixtures, and a one-year warranty on certain accessories. The Company estimates and provides for future costs for product warranties in cost of sales at the time revenue is recognized. The Company bases its product warranty costs on related material costs, repair labor costs and shipping costs. The Company estimates the future cost of product warranties by considering historical material, repair labor, and shipping costs, and applying the experience rates to the outstanding warranty period for products sold. It is reasonably possible that actual results could differ from those estimates. Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration that the Company expects to receive for those goods or services. To recognize revenue, the Company (i) identifies the contract(s) with a customer; (ii) identifies the performance obligations in the contract; (iii) determines the transaction price; (iv) allocates the transaction price to the performance obligations in the contract; and (v) recognizes revenue when, or as, it satisfies the performance obligation(s). For sales of the Company's Advanced Energy products (Renuvion®/J-Plasma®), this is at a point in time when title has been transferred to the customer, which is generally at the time of shipment or receipt by customer for FOB destination terms. For sales of products under its OEM agreements, the Company recognizes revenue over time when no alternative use exists for the manufactured goods and the Company has rights to payment. Presently, the Company does not stock any significant completed goods under its OEM agreements, accordingly, the recognition of revenue under these agreements approximates point in time recognition. The following policies apply to its major categories of revenue transactions: • The majority of sales to customers are evidenced by firm purchase orders. Generally, title and the risks and rewards of ownership are transferred to the customer when the product is shipped. Payment by the customer is due under fixed payment terms. • Product returns are only accepted at the Company's discretion and in accordance with its “Returned Goods Policy”. Historically, the level of product returns has not been significant. Accruals for sales returns, rebates and allowances are made as a reduction of revenue based upon an analysis of historical customer returns and credits, rebates, discounts and current market conditions. • The terms of sale to customers generally do not include any obligations to perform future services. Limited warranties are generally provided for sales and provisions for warranty are provided at the time of product sale based upon an analysis of historical data. • In connection with the execution of OEM supply agreements, the Company may enter into an accompanying product development agreement. If the Company enters into a product development agreement, and development of the goods does not represent a performance obligation on a standalone basis, the Company defers the development fees billed to customers and the associated costs. At December 31, 2020 and 2019, respectively, the Company had recorded approximately $0.6 million and $0.4 million of contract liabilities and $0.2 million and $0.1 million of contract assets related to the deferral of revenues and expenses under these agreements. Recognition of the deferred billings and costs will occur as the Company performs on the accompanying supply arrangements. Advertising Costs Advertising costs are expensed as incurred. The amounts of advertising costs, including trade shows, were approximately $0.8 million and $1.5 million for the years ended December 31, 2020 and 2019, respectively. Stock-Based Compensation The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718, Compensation-Stock Compensation . FASB ASC 718 requires recognizing compensation expense for all share-based payment awards made to employees, directors and non-employees based upon the awards’ grant date fair value. It accounts for forfeitures as they occur. The standard covers employee stock options, restricted stock and other equity awards. The Company utilizes a Black-Scholes model to estimate the grant date fair value of stock option awards. For employee and director awards, compensation expense is recognized on a straight-line basis over the vesting periods. For non-employee awards, compensation expense is recorded for non-forfeitable, fully vested awards at the grant date. For other awards granted to non-employees, compensation cost is recognized as services are provided, which approximates a straight-line basis over the vesting period. Litigation Contingencies In accordance with authoritative guidance, the Company accrues a liability in its consolidated financial statements for these actions when a loss is known or considered probable and the amount can be reasonably estimated. If the reasonable estimate of a known or probable loss is a range, and no amount within the range is a better estimate than any other, the minimum amount of the range is accrued. If a loss is reasonably possible, but not known or probable, and can be reasonably estimated, the estimated loss or range of loss is disclosed in the notes to the consolidated financial statements. In most cases, significant judgment is required to estimate the amount and timing of a loss to be recorded; actual results may differ from those estimates. Income (Loss) Per Share The Company computes basic (loss) earnings attributable to common stockholders per share by dividing net (loss) income attributable to common stockholders by the weighted average number of common shares outstanding for the reporting period. Diluted (loss) earnings per share attributable to common stockholders gives effect to all potential dilutive shares outstanding during the period. The number of dilutive shares is calculated using the treasury stock method which reduces the effective number of shares by the amount of shares the Company could purchase with the proceeds of assumed exercises. Anti-dilutive units are excluded from the calculation of diluted shares. In periods of loss, all potentially dilutive units are anti-dilutive and are excluded from the calculation of diluted income (loss) per share. Research and Development Costs Research and development expenses are charged to operations as incurred. Income Taxes The Company utilizes the liability method of accounting for income taxes as set forth in FASB ASC Topic 740, "Income Taxes". Under the liability method, deferred taxes are determined based on temporary differences between the financial statement and tax bases of assets and liabilities using tax rates expected to be in effect during the years in which the deferred taxes reverse. The Company accounts for interest and penalties on income taxes as income tax expense. A valuation allowances is recorded when it is more likely than not that a tax benefit will not be realized. In determining the need for valuation allowances the Company considers projected future taxable income, the timing of reversals of temporary differences, and the availability of tax planning strategies. As of December 31, 2020 and 2019, the Company recorded a valuation allowance on the net deferred tax asset. The Company assesses the realizability of deferred tax assets each reporting period and will be able to reduce the valuation allowance to the extent the financial results of continuing operations improve, and it becomes more likely than not that the deferred tax assets will be realizable. As Management expects the Company to continue to generate losses in the foreseeable future after 2020, the Company will continue to record a full valuation allowance on the net deferred tax assets as of December 31, 2020. As a result of the CARES ACT, during 2020, the Company released the valuation allowance on the Federal NOLs that can now be carried back to prior taxable years. The Company assesses the financial statement impact of an uncertain tax position taken or expected to be taken on an income tax return at the largest amount that is more-likely-than-not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized in the financial statements unless it is more likely than not of being sustained. Foreign Currency Transactions The functional currency of Apyx Bulgaria is the U.S. dollar. The monetary assets and liabilities that are denominated in a currency other than U.S. dollar are remeasured into U.S. dollars at the exchange rate on the balance sheet date, while nonmonetary items are remeasured at historical rates. Revenue and expenses are remeasured at weighted average exchange rates during the period. Transaction gains and losses that arise from exchange rate fluctuations on transactions denominated in a currency other than the functional currency are included in selling, general and administrative expenses in the Consolidated Statements of Operations and were not material for the years ended December 31, 2020 and 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326). The update changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, contract assets, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. This update, as originally issued, was effective for annual and interim periods beginning after December 15, 2019, with early adoption permitted. In November 2019, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) Effective Dates , which deferred the effective dates of these standards for Smaller Reporting Companies until fiscal years beginning after December 15, 2022. The Company currently expects to continue to qualify as a Smaller Reporting Company, based upon the current SEC definition and, as a result, will be utilizing the deferred elective date. While the Company is in the process of determining the effects of the adoption of the standard on the consolidated financial statements, it does not expect the impact to be material. No other new accounting pronouncement issued or effective during the fiscal year had or is expected to have a material impact on the Company's consolidated financial statements or disclosures.

DISPOSITION OF THE CORE BUSINES

DISPOSITION OF THE CORE BUSINESS	12 Months Ended
	Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
DISPOSITION OF THE CORE BUSINESS	DISPOSITION OF THE CORE BUSINESS On August 30, 2018, the Company closed on a definitive asset purchase agreement (the "Asset Purchase Agreement") with Specialty Surgical Instrumentation Inc., a Tennessee Corporation and wholly owned subsidiary of Symmetry Surgical Inc. (“Symmetry”), pursuant to which the Company divested and sold the Company's electrosurgical "Core" business segment and related intellectual property, including the Bovie ® brand and trademarks, to Symmetry for gross proceeds of $97 million in cash.

INTEREST IN JOINT VENTURE INVES

INTEREST IN JOINT VENTURE INVESTMENT	12 Months Ended
	Dec. 31, 2020
Noncontrolling Interest [Abstract]
INTEREST IN JOINT VENTURE INVESTMENT	INTEREST IN JOINT VENTURE INVESTMENT In 2019, the Company executed a joint venture agreement with its Chinese supplier ("China JV"). The agreement requires the Company to make a capital contribution into the newly formed entity of approximately $357,000, of which approximately $154,000 was contributed during the year ended December 31, 2020. As of the date of these consolidated financial statements, the joint venture has not commenced principal operations. Changes in the Company's ownership interest in its 51% owned China JV were as follows: (In thousands) Year Ended Beginning interest in China JV $ — Contributions 154 Net loss attributable to Apyx (10) Ending interest in China JV $ 144

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2020
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consisted of the following: (In thousands) December 31, December 31, 2019 Raw materials $ 2,243 $ 2,935 Work in process 1,109 1,209 Finished goods 1,087 1,316 Gross inventories 4,439 5,460 Less: provision for obsolescence (388) (392) Inventories, net $ 4,051 $ 5,068 During 2020, the Company reassessed its forecasted product mix due to COVID-19, increased availability of newer handpiece designs, and improved timing of product registrations in some of our foreign markets. As a result, certain products were reduced to a lower carrying value, and some components were also written down as the Company determined to cease further production on these older models. The total impairment was approximately $400,000 and is included in cost of sales in the accompanying Consolidated Statement of Operations for 2020. Later in 2020, the Company's forecasts were revised, and it subsequently utilized a portion of the written down components and approximately $100,000 of the impairment was recovered through the sale of the corresponding manufactured handpieces.

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT	PROPERTY AND EQUIPMENT Property and equipment consisted of the following: (In thousands) December 31, December 31, Land $ 1,600 $ 1,600 Building and improvements 4,454 4,423 Machinery and equipment 2,113 2,187 Furniture and fixtures 290 292 Computer equipment and software 1,505 1,409 Leasehold improvements 156 156 Molds 813 805 Total property, plant and equipment 10,931 10,872 Less: accumulated depreciation and amortization (4,813) (4,403) Property and equipment in service 6,118 6,469 Construction in progress 423 149 Property and equipment, net $ 6,541 $ 6,618 Total depreciation expense was $0.7 million for the years ended December 31, 2020 and 2019. Depreciation expense is included within cost of goods sold and selling, general and administrative expense in the Consolidated Statements of Operations.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
LEASES	LEASES The Company does not recognize leases with terms less than twelve months in duration, or that have variable only payments, in its Consolidated Balance Sheet as right-of-use assets and lease liabilities. The Company has adopted the practical expedient which allows for the Company to not separate lease and non-lease components of contracts. Accordingly, non-lease components are included in the measurement of the Company's lease liabilities and right-of-use assets. If the Company is aware of the implicit rate in leases, the Company determines the operating lease liability using the implicit rate. For those leases where the Company is not aware of the implicit rate in the lease, the Company utilizes an incremental borrowing rate of 4.00%, which is indicative of its collateralized borrowing rate. Operating Leases The Company leases its facility in Sofia, Bulgaria and vehicles in Clearwater, Florida under non-cancelable operating lease agreements. The Company's lease on the Bulgaria facility includes rent escalation over the term of the lease. Rent expense on the lease is accounted for on a straight-line basis over the lease term. During 2019, the Bulgaria facility lease was extended for an additional 2 years. In accordance with operating lease guidance under Topic 842, the extension was accounted for as a lease modification and the right-of-use asset and lease liability were remeasured at the modification date. These operating leases have terms expiring through December 2022. Finance Leases During 2019, the Company entered into non-cancelable finance leases for certain computer equipment and a vehicle in Clearwater, Florida. These finance leases have terms expiring through August 2023. Information about the Company’s lease costs are as follows: Year Ended Lease costs (in thousands) : 2020 2019 Operating lease costs $ 124 $ 115 Finance lease costs: Amortization of right-of-use assets $ 216 $ 57 Interest on lease liabilities $ 22 $ 8 Variable lease costs $ 13 $ 16 Total lease costs $ 375 $ 196 Cash and non-cash information related to our leases are as follows: Year Ended Year Ended (in thousands) Operating Finance Operating Finance Non cash information: Right-of-use assets capitalized and lease liabilities recognized upon adoption of Topic 842 $ — $ — $ 212 $ — Right-of-use assets capitalized and lease liabilities recognized upon lease remeasurement $ — $ — $ 207 $ — Right-of-use assets capitalized and lease liabilities recognized upon execution of lease $ — $ — $ 28 $ 710 Cash information: Cash paid for lease liabilities $ 110 $ 251 $ 106 $ 68 Information about the Company’s weighted average remaining lease terms and discount rate assumptions are as follows: Year Ended Year Ended Operating Finance Operating Finance Weighted average remaining lease term (in years) 2.0 1.7 3.0 2.7 Weighted average discount rate 4.03% 4.00% 4.04% 4.00% Maturities of lease liabilities as of December 31, 2020 are as follows: (In thousands) Operating Finance 2021 $ 134 $ 236 2022 131 183 2023 — 18 Total lease payments 265 437 Less imputed interest (10) (16) Present value of lease liabilities 255 421 Less current portion of lease liabilities (126) (238) Long-term portion of lease liabilities $ 129 $ 183
LEASES	LEASES The Company does not recognize leases with terms less than twelve months in duration, or that have variable only payments, in its Consolidated Balance Sheet as right-of-use assets and lease liabilities. The Company has adopted the practical expedient which allows for the Company to not separate lease and non-lease components of contracts. Accordingly, non-lease components are included in the measurement of the Company's lease liabilities and right-of-use assets. If the Company is aware of the implicit rate in leases, the Company determines the operating lease liability using the implicit rate. For those leases where the Company is not aware of the implicit rate in the lease, the Company utilizes an incremental borrowing rate of 4.00%, which is indicative of its collateralized borrowing rate. Operating Leases The Company leases its facility in Sofia, Bulgaria and vehicles in Clearwater, Florida under non-cancelable operating lease agreements. The Company's lease on the Bulgaria facility includes rent escalation over the term of the lease. Rent expense on the lease is accounted for on a straight-line basis over the lease term. During 2019, the Bulgaria facility lease was extended for an additional 2 years. In accordance with operating lease guidance under Topic 842, the extension was accounted for as a lease modification and the right-of-use asset and lease liability were remeasured at the modification date. These operating leases have terms expiring through December 2022. Finance Leases During 2019, the Company entered into non-cancelable finance leases for certain computer equipment and a vehicle in Clearwater, Florida. These finance leases have terms expiring through August 2023. Information about the Company’s lease costs are as follows: Year Ended Lease costs (in thousands) : 2020 2019 Operating lease costs $ 124 $ 115 Finance lease costs: Amortization of right-of-use assets $ 216 $ 57 Interest on lease liabilities $ 22 $ 8 Variable lease costs $ 13 $ 16 Total lease costs $ 375 $ 196 Cash and non-cash information related to our leases are as follows: Year Ended Year Ended (in thousands) Operating Finance Operating Finance Non cash information: Right-of-use assets capitalized and lease liabilities recognized upon adoption of Topic 842 $ — $ — $ 212 $ — Right-of-use assets capitalized and lease liabilities recognized upon lease remeasurement $ — $ — $ 207 $ — Right-of-use assets capitalized and lease liabilities recognized upon execution of lease $ — $ — $ 28 $ 710 Cash information: Cash paid for lease liabilities $ 110 $ 251 $ 106 $ 68 Information about the Company’s weighted average remaining lease terms and discount rate assumptions are as follows: Year Ended Year Ended Operating Finance Operating Finance Weighted average remaining lease term (in years) 2.0 1.7 3.0 2.7 Weighted average discount rate 4.03% 4.00% 4.04% 4.00% Maturities of lease liabilities as of December 31, 2020 are as follows: (In thousands) Operating Finance 2021 $ 134 $ 236 2022 131 183 2023 — 18 Total lease payments 265 437 Less imputed interest (10) (16) Present value of lease liabilities 255 421 Less current portion of lease liabilities (126) (238) Long-term portion of lease liabilities $ 129 $ 183

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2020
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities consisted of the following: (in thousands) December 31, 2020 December 31, 2019 Accrued payroll $ 808 $ 694 Accrued bonus 811 1,306 Accrued commissions 1,001 877 Accrued product warranties 498 452 Accrued product liability claim insurance deductibles 435 1,170 Accrued professional fees 222 1,383 Joint and several payroll liability 1,027 1,045 Uncertain tax positions 1,658 1,491 Sales tax payable 591 492 Other accrued expenses and current liabilities 227 486 Total accrued expenses and other current liabilities $ 7,278 $ 9,396

PRODUCT WARRANTIES

PRODUCT WARRANTIES	12 Months Ended
	Dec. 31, 2020
Product Warranties Disclosures [Abstract]
PRODUCT WARRANTIES	PRODUCT WARRANTIES Product warranty activity consisted of the following for the years ended: (In thousands) December 31, December 31, Beginning balance $ 452 $ 348 Provision for product warranties 215 321 Product warranty expenses incurred (169) (217) Accrued product warranties $ 498 $ 452

JOINT AND SEVERAL PAYROLL LIABI

JOINT AND SEVERAL PAYROLL LIABILITY	12 Months Ended
	Dec. 31, 2020
Payables and Accruals [Abstract]
JOINT AND SEVERAL PAYROLL LIABILITY	JOINT AND SEVERAL PAYROLL LIABILITYDuring 2017, 2018 and 2019, the Company improperly calculated and reported the amount of income to certain employees, and did not collect and remit the correct amount of its employees' portion of income and payroll taxes, related to stock option exercises as required by the IRS. Due to IRS statutory requirements, the Company has joint and several liability for the full amount that was not withheld and remitted to the proper taxing authorities. This amount of the liability was approximately $1.0 million at December 31, 2020 and 2019. Included in other income (loss), net in the accompanying Consolidated Statements of Operations for 2019 is approximately $0.3 million related to the liability. If the Company can establish that its employees have in fact paid these obligations, either presently or in the future, it will be relieved of its liability.

EARNINGS (LOSS) PER SHARE

EARNINGS (LOSS) PER SHARE	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
EARNINGS (LOSS) PER SHARE	EARNINGS (LOSS) PER SHARE Basic earnings (loss) per share (“basic EPS”) is computed by dividing the net income or loss by the weighted average number of common shares outstanding for the reporting period. Diluted earnings per share (“diluted EPS”) gives effect to all dilutive potential shares outstanding. As the Company is in a net loss position for all periods presented, all potential shares outstanding are anti-dilutive. The following table provides the computation of basic and diluted earnings (loss) per share. Year Ended December 31, (in thousands, except per share data) 2020 2019 Numerators: Net loss attributable to stockholders $ (11,896) $ (19,706) Weighted average shares outstanding - basic and diluted 34,212 34,069 Loss per share - basic and diluted $ (0.35) $ (0.58) Anti-dilutive instruments excluded from diluted loss per common share: Options 4,939 3,967

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
FINANCIAL INSTRUMENTS	FINANCIAL INSTRUMENTSCash and Cash Equivalents at December 31, 2020 and 2019, respectively, consisted of approximately $2,250,000 and $2,237,000 in cash and $39,665,000 and $56,575,000 in U.S. Treasury Securities with maturities of 3 months or less.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Components of the provision for income taxes are as follows: (In thousands) December 31, December 31, 2019 Current: Federal $ (3,682) $ (12) State (120) (205) Foreign (37) 87 (3,839) (130) Release of valuation allowance due to CARES Act (3,664) — (7,503) (130) Deferred: Federal (25) (3,989) State (1,004) (741) (1,029) (4,730) Valuation allowance 1,029 4,730 Total provision for income tax $ (7,503) $ (130) Below is a reconciliation of the statutory federal income tax rate to the Company's effective tax rate: Year Ended December 31, 2020 2019 Federal tax provision 21.0 % 21.0 % State taxes (net of federal benefit) 5.1 % 4.3 % Valuation allowance (5.3) % (23.8) % NOL carryback from CARES Act 18.9 % — % Other (1.0) % (0.8) % Total 38.7 % 0.7 % Major components of the Company’s deferred tax assets (liabilities) are as follows: (In thousands) December 31, December 31, 2019 Deferred tax assets: Loss and credit carryforwards $ 1,888 $ 4,779 Stock-based compensation 1,603 1,004 Other 745 1,133 Total deferred tax assets 4,236 6,916 Valuation allowance (3,837) (6,472) Total deferred tax assets, net of valuation allowance 399 444 Deferred tax liabilities: Property and equipment (278) (245) Other (121) (199) Total deferred tax liabilities (399) (444) Net deferred tax assets $ — $ — On March 27, 2020, the U.S. government enacted the CARES Act to provide relief from COVID-19. The CARES Act includes a provision that allows companies to carryback net operating losses (NOL’s) generated in the period 2018 through 2020 to prior years. In conjunction with the disposition of the Core business in 2018, the Company generated a significant amount of taxable income in 2018. Subsequent to this, the Company generated NOLs in 2019 and 2020. For the NOLs generated in 2019, the Company previously recorded a full valuation allowance on the deferred tax assets associated with the NOL due to realization not being probable under then existing tax law. The CARES Act makes these assets realizable and, as of the date of the CARES Act, the Company has recognized an income tax benefit of approximately $3.7 million associated with the release of the valuation allowance on its Federal NOL deferred tax asset from 2019. Additionally, using the provisions of the CARES Act, the Company is carrying back its 2020 Federal NOL of approximately $3.7 million. The Company considers all positive and negative evidence regarding the realization of deferred tax assets, including past operating results and future sources of taxable income. The Company considers the earnings of Apyx Bulgaria, EOOD to be indefinitely invested outside the United States on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs and our specific plans for reinvestment of those subsidiary earnings. It has not recorded a deferred tax liability related to the U.S. Federal and State income taxes and foreign withholding taxes on the undistributed earnings of Apyx Bulgaria, EOOD indefinitely invested outside the United States. If it decides to repatriate the foreign earnings, the Company will need to adjust its income tax provision in the period it determines that the earnings will no longer be indefinitely invested outside the United States. The Company assesses the financial statement impact of an uncertain tax position taken or expected to be taken on an income tax return at the largest amount that is more-likely-than-not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized in the financial statements unless it is more likely than not of being sustained. As of December 31, 2020 and 2019, the Company has recorded a liability of approximately $1.3 million related to uncertain tax positions and accrued approximately $0.4 million and $0.2 million, respectively, of interest and penalties on these positions. It is expected that the change in unrecognized tax benefits within the next 12 months will not be significant. The following is a roll-forward of the Company's total gross unrecognized tax benefits, not including interest and penalties, for the years ended December 31: (in thousands) Gross Unrealized Tax Benefits 2020 2019 Beginning of year balance $ 1,313 $ 1,313 Additions of tax positions related to the current year — — Additions of tax positions related to the prior year — — Decreases for tax positions related to prior year — — End of year balance $ 1,313 $ 1,313

RETIREMENT PLAN

RETIREMENT PLAN	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
RETIREMENT PLAN	RETIREMENT PLAN The Company provides a tax-qualified profit-sharing retirement plan under section 401(k) of the Internal Revenue Code for the benefit of eligible employees with an accumulation of funds for retirement on a tax-deferred basis and provides for annual discretionary contribution to individual trust funds. All employees are eligible to participate upon completing three months of service. The employees may make voluntary contributions to the plan up to the maximum percentage allowed by the Internal Revenue Code. Vesting in employee matching contributions is graded and depends on the years of service. After three years from their date of hire, the employees are 100% vested. The Company makes matching contributions of 50% of the employee contributions up to a total of 3% of participant payroll. Matching contributions made by the Company totaled approximately $0.3 million for each of the years ended December 31, 2020 and 2019, respectively.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS Several relatives of Nikolay Shilev, Apyx Bulgaria’s Managing Director, are considered related parties. Teodora Shileva, Mr. Shilev’s spouse, is an employee of the Company working in the accounting department. Antoaneta Dimitrova Shileva-Tor omanova, Mr. Shilev’s sister, is the manager of human resources. Svetoslav Shilev, Mr. Shilev’s son, is a quality manager in the quality assurance department. In addition, as part of the purchase of the Apyx Bulgaria manufacturing facility, Mr. Shilev was issued a note payable for $0.1 million, which was paid in full on October 20, 2020. The partner in the Company's China joint venture is also a supplie r of the Company. For the years ended December 31, 2020 and 2019, the Company made purchases from this supplier of approximately $1,441,000 and $2,643,000, respectively. At December 31, 2020 and 2019, respectively, the Company owed this supplier approximately $38,000 and $29,000, respective ly.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Litigation The medical device industry is characterized by frequent claims and litigation, and the Company may become subject to various claims, lawsuits and proceedings in the ordinary course of our business. Such claims may include claims by current or former employees, distributors and competitors, claims concerning the marketing and promotion of our products and product liability claims. The Company is involved in a number of legal actions relating to the use of our Helium Plasma technology. The outcomes of these legal actions are not within the Company’s complete control and may not be known for prolonged periods of time. It believes that such claims are adequately covered by insurance; however, in the case of one of the Company’s carriers, the Company is in a dispute regarding the total level of coverage available. Notwithstanding the foregoing, in the opinion of management, the Company has meritorious defenses, and such claims are not expected, individually or in the aggregate, to result in a material, adverse effect on its financial condition, results of operations and cash flows. However, in the event that damages exceed the aggregate coverage limits of the Company’s policies or if its insurance carriers disclaim coverage, management believes it is possible that costs associated with these claims could have a material adverse impact on the consolidated financial condition, results of operations and cash flows. On April 17, 2019, a complaint (the “Complaint”) was filed in the United States District Court for the Middle District of Florida, against the Company and Charles D. Goodwin, the Company’s President and Chief Executive Officer and a member of the Company’s Board of Directors, alleging certain violations of the Securities Exchange Act of 1934, as amended. On July 16, 2019, the Court appointed lead plaintiff for the putative class and approved the lead plaintiff’s selection of counsel. On September 3, 2019, lead plaintiff filed an amended complaint (the “Amended Complaint”) with the Court. The Amended Complaint seeks class action status on behalf of all persons and entities that acquired the Company’s securities between December 21, 2018 and April 1, 2019, and alleges violations by the Company and Goodwin of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended and Rule 10b-5 thereunder, primarily related to certain public statements concerning the Premarket Notification 510(k) submission made to the US Food and Drug Administration for a new indication for the Company’s J-Plasma® technology for use in dermal resurfacing procedures. On October 3, 2019, defendants filed a motion to dismiss the Amended Complaint, and on March 11, 2020, the Court denied that motion. On July 10, 2020, the parties executed a settlement agreement, which was subject to Court approval. The Court preliminarily approved the settlement on July 21, 2020. The settlement agreement provides for the dismissal of the action with prejudice. On November 6, 2020, the Court issued its final order approving the settlement and dismissing the action and all claims contained in the Amended Complaint with prejudice. At December 31, 2020, the Company has settled and fully paid all obligations related to this matter. Included in selling, general and administrative expenses for the year ended December 31, 2019 is $1,000,000 for the matter. At December 31, 2019, the Company had accrued $820,000 for the matter. The Company accrues a liability in our consolidated financial statements for these actions when a loss is known or considered probable and the amount can be reasonably estimated. If the reasonable estimate of a known or probable loss is a range, and no amount within the range is a better estimate than any other, the minimum amount of the range is recorded. If a loss is reasonably possible, but not known or probable, and can be reasonably estimated, the estimated loss or range of loss is disclosed in the notes to the consolidated financial statements. In most cases, significant judgment is required to estimate the amount and timing of a loss to be recorded, actual results may differ from these estimates. Purchase Commitments At December 31, 2020, the Company has purchase commitments for inventories totaling approximately $1.9 million, substantially all of which is expected to be purchased by the end of 2021. China Joint Venture The Company's agreement in the China joint venture requires it to make a capital contribution into the newly formed entity of $357,000. As of the date of these consolidated financial statements, approximately $203,000 of its capital commitment remains to be funded. Concentrations

STOCK OPTIONS

STOCK OPTIONS	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
STOCK OPTIONS	STOCK OPTIONS On October 30, 2007, the Company's stockholders approved, and the Board of Directors adopted an amendment to the 2003 Executive and Employee Stock Option Plan (the “Plan”) to increase the maximum aggregate number of shares of common stock reserved for issuance under the Plan from 1.2 million shares (already reserved against outstanding options) to 1.7 million shares. Except for the increase in the number of shares covered by the Plan, the Plan remained otherwise unchanged. In 2001, the Board of Directors adopted the 2001 Executive and Employee Stock Option Plan which reserved for issuance 1.2 million stock options. Stock options to employees typically have a ten-year life and currently vest over periods between one In July 2012, the Company's stockholders approved the 2012 Share Incentive Plan covering a total of 750,000 shares of common stock issuable upon exercise of options to be granted under the plan. At December 31, 2020 approximately 60,000 are available to be issued in this plan. In July 2015, the Company's stockholders approved the 2015 Executive and Employee Stock Option Plan covering a total of 2,000,000 shares of common stock issuable upon exercise of options to be granted under the plan. At December 31, 2020 approximately 230,000 are available to be issued in this plan. In August 2017, the Company's stockholders approved the 2017 Executive and Employee Stock Option Plan covering a total of 3,000,000 shares of common stock issuable upon exercise of options to be granted under the plan. At December 31, 2020 approximately 70,000 are available to be issued in this plan. In August 2019, the Company's stockholders approved the 2019 Share Incentive Plan covering a total of 2,000,000 shares of common stock issuable upon exercise of options to be granted under the plan. At December 31, 2020, all 2,000,000 are available to be issued in this plan. On January 29, 2021, the Company granted employees appro ximately 700,000 options to purchase common shares of the Company's stock. All options granted were pursuant to the plans noted above. The options ves t over a period of three years. The status of the Company's stock options is summarized as follows: Number of options Weighted average exercise price Outstanding at December 31, 2018 3,254,779 $ 3.18 Granted 1,379,500 7.70 Exercised (410,635) 2.99 Canceled and forfeited (256,785) 4.76 Outstanding at December 31, 2019 3,966,858 $ 4.67 Granted 1,376,900 7.94 Exercised (112,965) 3.37 Canceled and forfeited (291,850) 7.19 Outstanding at December 31, 2020 4,938,943 $ 5.46 Number of options Weighted average grant date fair value Non-vested at December 31, 2019 1,484,929 $ 4.11 Granted 1,376,900 4.78 Vested (665,510) 3.77 Forfeited (151,850) 4.53 Non-vested at December 31, 2020 2,044,469 $ 4.61 Common shares required to be issued upon the exercise of stock options would be issued from authorized and unissued shares. Options are valued using the Black-Scholes model. For employee grants, the Company calculates expected life via the simplified method as it does not have sufficient history to determine actual expected life. For non-employee grants, the Company calculates expected life using a combination of past exercise behavior, the contractual term and expected remaining exercise behavior. Inputs used in the valuation models are as follows: 2020 Grants 2019 Grants Option value $4.98 — $8.18 $7.15 — $7.91 Risk-free rate 0.3% - 1.7% 1.7% — 2.6% Expected dividend yield —% —% Expected volatility 65.9% - 70.1% 64.9% — 66.4% Expected term (in years) 6 4.5 - 6 The Company recognized approximately $4,210,000 and $3,581,000 in stock-based compensation expense during the years ended December 31, 2020 and 2019, respectively. The intrinsic value of each option share is the difference between the fair value of our common stock and the exercise price of such option share to the extent it is “in-the-money”. Aggregate intrinsic value represents the value that would have been received by the holders of in-the-money options had they exercised their options on the last trading day of the year and sold the underlying shares at the closing stock price on such day. The intrinsic value calculation at December 31, 2020 is based on the $7.20 closing stock price of the Company's common stock on December 31, 2020, the last trading day of 2020. As of December 31, 2020, there were 4,530,049 stock options outstanding and expected to vest with an aggregate intrinsic value of approximately $10,250,000. These options have a weighted average exercise price of $5.26 and a weighted average remaining contractual term of approximately 7 years. As of December 31, 2020, there were 2,894,474 stock options outstanding and exercisable with an aggregate intrinsic value of approximately $9,800,000. These options have a weighted average exercise price of $3.89 and a weighted average remaining contractual term of approximately 6 years. The total intrinsic value of in the money options exercised during the years ended December 31, 2020 and 2019, was approximately $200,000 and $1,420,000, respectively. Intrinsic value of exercised shares is the total value of such shares on the date of exercise less the cash received from the option holder to exercise the options or other consideration paid. The total fair value of options granted during the years ended December 31, 2020 and 2019, was approximately $6,580,000 and $6,300,000, respectively. The weighted average fair value of options granted during the years ended December 31, 2020 and 2019, was $4.78 and $4.57, respectively. The total fair value of option shares vested during the years ended December 31, 2020 and 2019, was approximately $2,510,000 and $2,130,000, respectively. The Company allows employees to exercise stock-based awards by surrendering stock-based awards with an intrinsic value equal to the cumulative exercise price of the stock-based awards being exercised, referred to as net settlements. These surrenders are included in stock options exercised in the options rollforward above. During the years ended December 31, 2020 and 2019, the Company received 39,448 and 125,948 options as payment in the exercise of 47,088 and 222,601 options, respectively. As of December 31, 2020, there was approximately $5,910,000 of total unrecognized stock-based compensation expense, related to unvested stock options granted under the plans above. This expense is expected to be recognized over a weighted-average period of approximately 1 year.

GEOGRAPHIC AND SEGMENT INFORMAT

GEOGRAPHIC AND SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
GEOGRAPHIC AND SEGMENT INFORMATION	GEOGRAPHIC AND SEGMENT INFORMATION Operating segments are aggregated into reportable segments only if they exhibit similar economic characteristics. In addition to similar economic characteristics, the Company also considers the following factors in determining the reportable segments: the nature of business activities, the management structure directly accountable to its chief operating decision maker for operating and administrative activities, availability of discrete financial information and information presented to the Board of Directors and investors. Asset information is not reviewed by the chief operating decision maker by segment and is not available by segment, accordingly, the Company has not presented a measure of assets by segment. The Company's reportable segments are disclosed as principally organized and managed as two operating segments: Advanced Energy and OEM. "Corporate & Other" includes certain unallocated corporate and administrative costs which were not specifically attributed to any reportable segment. The OEM segment is primarily development and manufacturing contract and product driven, all related expenses are recorded as cost of sales, therefore no segment specific operating expenses are incurred. Summarized financial information with respect to reportable segments is as follows: Year ended December 31, 2020 (In thousands) Advanced Energy OEM Corporate (Other) Total Sales $ 22,214 $ 5,497 $ — 27,711 Income (loss) from operations (7,128) 1,838 (14,793) (20,083) Interest income — — 241 241 Interest expense — — (46) (46) Other income, net — — 479 479 Income tax benefit — — 7,503 7,503 Year ended December 31, 2019 (In thousands) Advanced Energy OEM Corporate (Other) Total Sales $ 22,676 $ 5,559 $ — $ 28,235 Income (loss) from operations (8,045) 2,136 (14,960) (20,869) Interest income — — 1,392 1,392 Interest expense — — (8) (8) Other losses, net — — (351) (351) Income tax benefit — — 130 130 International sales in 2020 and 2019, were 32.1% and 30.6% of sales, respectively. Substantially all of these sales are denominated in U.S. dollars. Revenue by geographic region, based on the "ship to" location on the invoice are as follows: Year Ended December 31, (In thousands) 2020 2019 Sales by Domestic and International Domestic $ 18,812 $ 19,584 International 8,899 8,651 Total $ 27,711 $ 28,235

SIGNIFICANT ACCOUNTING POLICI_2

SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated Financial Statements	Consolidated Financial StatementsThe accompanying consolidated financial statements include the accounts of Apyx, its wholly owned subsidiary, Apyx Bulgaria, EOOD, and its 51% owned subsidiary, Apyx SY Medical Devices (Ningbo) Co., Ltd. (collectively, "Apyx," or the “Company”). All significant intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The reported amounts of revenues and expenses during the reporting period may be affected by the estimates and assumptions the Company is required to make.
Cash and Cash Equivalents	Cash and Cash EquivalentsHoldings of highly liquid investments with original maturities of three months or less from the date of purchase are considered to be cash equivalents. As of December 31, 2020 and 2019, all of the Company’s U.S. Treasury Bills have original maturities of three months or less and are included in cash and cash equivalents.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of trade accounts receivable. With respect to cash, the Company frequently maintains cash and cash equivalent balances in excess of federally insured limits; it has not experienced any losses in such accounts.
Trade Accounts Receivable and Allowance for Doubtful Accounts	Trade Accounts Receivable and Allowance for Doubtful Accounts The Company's standard credit terms for billings range from net 10 days to net 90 days, depending on the customer agreement. Accounts receivable are determined to be past due if payments are not made in accordance with such agreements and an allowance is generally recorded for accounts that become three months past due, or sooner if there are other indicators that the receivables may not be recovered. Customary collection efforts are initiated, and receivables are written off when the Company determines they are not collectible and abandons these collection efforts.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined on a first in, first out basis. Finished goods and work-in-process inventories include material, labor and overhead costs. Factory overhead costs are allocated to manufactured inventory based upon labor hours. The Company monitors inventory usage to determine if the carrying value of any items should be adjusted due to lack of demand for the item and adjusts inventory for estimated obsolescence or unusable inventory equal to the difference between the cost of inventory and the estimated net realizable value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by management, additional inventory write-downs may be required.
Property and Equipment	Property and Equipment Property and equipment are recorded at cost. Depreciation and amortization are provided for using the straight-line method over the estimated useful lives of the assets. The amortization of leasehold improvements is based on the shorter of the lease term or the life of the improvement. Betterments and major improvements, which extend the life of the asset, are capitalized, whereas maintenance and repairs and routine improvements are expensed as incurred. The estimated useful lives are: buildings and improvements, 39 years; machinery and equipment, 3-10 years; furniture and fixtures, 5-10 years; computer equipment and software, 3-5 years; and molds, 7-15 years.
Valuation of Long-Lived Assets	Valuation of Long-Lived Assets The Company reviews long-lived assets for recoverability if events or changes in circumstances indicate that the assets may have been impaired. This circumstance exists when the carrying amount of the asset exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. In those cases, an impairment loss is recognized to the extent that the assets’ carrying amount exceeds its fair value. Any impairment losses are not restored in the future if the fair value increases. At December 31, 2020, the Company believes the remaining carrying values of its long-lived assets are recoverable.
Product Warranties	Product WarrantiesThe Company provides a four year limited warranty on end-user sales of its Renuvion®/J-Plasma® generators, a two year warranty on mounting fixtures, and a one-year warranty on certain accessories. The Company estimates and provides for future costs for product warranties in cost of sales at the time revenue is recognized. The Company bases its product warranty costs on related material costs, repair labor costs and shipping costs. The Company estimates the future cost of product warranties by considering historical material, repair labor, and shipping costs, and applying the experience rates to the outstanding warranty period for products sold. It is reasonably possible that actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration that the Company expects to receive for those goods or services. To recognize revenue, the Company (i) identifies the contract(s) with a customer; (ii) identifies the performance obligations in the contract; (iii) determines the transaction price; (iv) allocates the transaction price to the performance obligations in the contract; and (v) recognizes revenue when, or as, it satisfies the performance obligation(s). For sales of the Company's Advanced Energy products (Renuvion®/J-Plasma®), this is at a point in time when title has been transferred to the customer, which is generally at the time of shipment or receipt by customer for FOB destination terms. For sales of products under its OEM agreements, the Company recognizes revenue over time when no alternative use exists for the manufactured goods and the Company has rights to payment. Presently, the Company does not stock any significant completed goods under its OEM agreements, accordingly, the recognition of revenue under these agreements approximates point in time recognition. The following policies apply to its major categories of revenue transactions: • The majority of sales to customers are evidenced by firm purchase orders. Generally, title and the risks and rewards of ownership are transferred to the customer when the product is shipped. Payment by the customer is due under fixed payment terms. • Product returns are only accepted at the Company's discretion and in accordance with its “Returned Goods Policy”. Historically, the level of product returns has not been significant. Accruals for sales returns, rebates and allowances are made as a reduction of revenue based upon an analysis of historical customer returns and credits, rebates, discounts and current market conditions. • The terms of sale to customers generally do not include any obligations to perform future services. Limited warranties are generally provided for sales and provisions for warranty are provided at the time of product sale based upon an analysis of historical data.
Advertising Costs	Advertising CostsAdvertising costs are expensed as incurred.
Stock-Based Compensation	Stock-Based Compensation The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718, Compensation-Stock Compensation . FASB ASC 718 requires recognizing compensation expense for all share-based payment awards made to employees, directors and non-employees based upon the awards’ grant date fair value. It accounts for forfeitures as they occur. The standard covers employee stock options, restricted stock and other equity awards. The Company utilizes a Black-Scholes model to estimate the grant date fair value of stock option awards. For employee and director awards, compensation expense is recognized on a straight-line basis over the vesting periods. For non-employee awards, compensation expense is recorded for non-forfeitable, fully vested awards at the grant date. For other awards granted to non-employees, compensation cost is recognized as services are provided, which approximates a straight-line basis over the vesting period. During 2019, the Company began granting stock option awards deeper within the organization. It does not have sufficient experience with grants to these employees and has experienced challenges in developing reliable forfeiture estimates at the grant date. Accounting for revising the forfeiture estimates has been burdensome. Accounting Standards Codification 718, Compensation- Stock Compensation , prescribes two methods for accounting for forfeitures on stock option awards, either the estimation method utilized by the Company previously, or by accounting for forfeitures as they occur. On January 1, 2020, the Company made an accounting policy election change and began accounting for forfeitures on stock option awards using actual forfeitures. This accounting policy election change was made on a retrospective basis. However, the changes to the current and prior period were determined to be immaterial and there have been no changes to previously reported results as a result of the change.
Litigation Contingencies	Litigation Contingencies In accordance with authoritative guidance, the Company accrues a liability in its consolidated financial statements for these actions when a loss is known or considered probable and the amount can be reasonably estimated. If the reasonable estimate of a known or probable loss is a range, and no amount within the range is a better estimate than any other, the minimum amount of the range is accrued. If a loss is reasonably possible, but not known or probable, and can be reasonably estimated, the estimated loss or range of loss is disclosed in the notes to the consolidated financial statements. In most cases, significant judgment is required to estimate the amount and timing of a loss to be recorded; actual results may differ from those estimates.
Income (Loss) Per Share	Income (Loss) Per Share The Company computes basic (loss) earnings attributable to common stockholders per share by dividing net (loss) income attributable to common stockholders by the weighted average number of common shares outstanding for the reporting period. Diluted (loss) earnings per share attributable to common stockholders gives effect to all potential dilutive shares outstanding during the period. The number of dilutive shares is calculated using the treasury stock method which reduces the effective number of shares by the amount of shares the Company could purchase with the proceeds of assumed exercises. Anti-dilutive units are excluded from the calculation of diluted shares. In periods of loss, all potentially dilutive units are anti-dilutive and are excluded from the calculation of diluted income (loss) per share.
Research and Development Costs	Research and Development CostsResearch and development expenses are charged to operations as incurred.
Income Taxes	Income Taxes The Company utilizes the liability method of accounting for income taxes as set forth in FASB ASC Topic 740, "Income Taxes". Under the liability method, deferred taxes are determined based on temporary differences between the financial statement and tax bases of assets and liabilities using tax rates expected to be in effect during the years in which the deferred taxes reverse. The Company accounts for interest and penalties on income taxes as income tax expense. A valuation allowances is recorded when it is more likely than not that a tax benefit will not be realized. In determining the need for valuation allowances the Company considers projected future taxable income, the timing of reversals of temporary differences, and the availability of tax planning strategies. As of December 31, 2020 and 2019, the Company recorded a valuation allowance on the net deferred tax asset. The Company assesses the realizability of deferred tax assets each reporting period and will be able to reduce the valuation allowance to the extent the financial results of continuing operations improve, and it becomes more likely than not that the deferred tax assets will be realizable. As Management expects the Company to continue to generate losses in the foreseeable future after 2020, the Company will continue to record a full valuation allowance on the net deferred tax assets as of December 31, 2020. As a result of the CARES ACT, during 2020, the Company released the valuation allowance on the Federal NOLs that can now be carried back to prior taxable years.
Foreign Currency Transactions	Foreign Currency TransactionsThe functional currency of Apyx Bulgaria is the U.S. dollar. The monetary assets and liabilities that are denominated in a currency other than U.S. dollar are remeasured into U.S. dollars at the exchange rate on the balance sheet date, while nonmonetary items are remeasured at historical rates. Revenue and expenses are remeasured at weighted average exchange rates during the period. Transaction gains and losses that arise from exchange rate fluctuations on transactions denominated in a currency other than the functional currency are included in selling, general and administrative expenses in the Consolidated Statements of Operations and were not material for the years ended December 31, 2020 and 2019.
Recent Accounting Pronouncements	In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326). The update changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, contract assets, held-to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the earlier recognition of allowance for losses. This update, as originally issued, was effective for annual and interim periods beginning after December 15, 2019, with early adoption permitted. In November 2019, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) Effective Dates , which deferred the effective dates of these standards for Smaller Reporting Companies until fiscal years beginning after December 15, 2022. The Company currently expects to continue to qualify as a Smaller Reporting Company, based upon the current SEC definition and, as a result, will be utilizing the deferred elective date. While the Company is in the process of determining the effects of the adoption of the standard on the consolidated financial statements, it does not expect the impact to be material. No other new accounting pronouncement issued or effective during the fiscal year had or is expected to have a material impact on the Company's consolidated financial statements or disclosures.

INTEREST IN JOINT VENTURE INV_2

INTEREST IN JOINT VENTURE INVESTMENT (Tables)	12 Months Ended
	Dec. 31, 2020
Noncontrolling Interest [Abstract]
Schedule of Noncontrolling Interest	Changes in the Company's ownership interest in its 51% owned China JV were as follows: (In thousands) Year Ended Beginning interest in China JV $ — Contributions 154 Net loss attributable to Apyx (10) Ending interest in China JV $ 144

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories consisted of the following: (In thousands) December 31, December 31, 2019 Raw materials $ 2,243 $ 2,935 Work in process 1,109 1,209 Finished goods 1,087 1,316 Gross inventories 4,439 5,460 Less: provision for obsolescence (388) (392) Inventories, net $ 4,051 $ 5,068

PROPERTY AND EQUIPMENT (Tables)

PROPERTY AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property and equipment consisted of the following: (In thousands) December 31, December 31, Land $ 1,600 $ 1,600 Building and improvements 4,454 4,423 Machinery and equipment 2,113 2,187 Furniture and fixtures 290 292 Computer equipment and software 1,505 1,409 Leasehold improvements 156 156 Molds 813 805 Total property, plant and equipment 10,931 10,872 Less: accumulated depreciation and amortization (4,813) (4,403) Property and equipment in service 6,118 6,469 Construction in progress 423 149 Property and equipment, net $ 6,541 $ 6,618

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Lease Costs	Information about the Company’s lease costs are as follows: Year Ended Lease costs (in thousands) : 2020 2019 Operating lease costs $ 124 $ 115 Finance lease costs: Amortization of right-of-use assets $ 216 $ 57 Interest on lease liabilities $ 22 $ 8 Variable lease costs $ 13 $ 16 Total lease costs $ 375 $ 196 Cash and non-cash information related to our leases are as follows: Year Ended Year Ended (in thousands) Operating Finance Operating Finance Non cash information: Right-of-use assets capitalized and lease liabilities recognized upon adoption of Topic 842 $ — $ — $ 212 $ — Right-of-use assets capitalized and lease liabilities recognized upon lease remeasurement $ — $ — $ 207 $ — Right-of-use assets capitalized and lease liabilities recognized upon execution of lease $ — $ — $ 28 $ 710 Cash information: Cash paid for lease liabilities $ 110 $ 251 $ 106 $ 68 Information about the Company’s weighted average remaining lease terms and discount rate assumptions are as follows: Year Ended Year Ended Operating Finance Operating Finance Weighted average remaining lease term (in years) 2.0 1.7 3.0 2.7 Weighted average discount rate 4.03% 4.00% 4.04% 4.00%
Maturity of Finance Lease Liabilities	Maturities of lease liabilities as of December 31, 2020 are as follows: (In thousands) Operating Finance 2021 $ 134 $ 236 2022 131 183 2023 — 18 Total lease payments 265 437 Less imputed interest (10) (16) Present value of lease liabilities 255 421 Less current portion of lease liabilities (126) (238) Long-term portion of lease liabilities $ 129 $ 183
Maturities of Operating Lease Liabilities	Maturities of lease liabilities as of December 31, 2020 are as follows: (In thousands) Operating Finance 2021 $ 134 $ 236 2022 131 183 2023 — 18 Total lease payments 265 437 Less imputed interest (10) (16) Present value of lease liabilities 255 421 Less current portion of lease liabilities (126) (238) Long-term portion of lease liabilities $ 129 $ 183

ACCRUED EXPENSES AND OTHER CU_2

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following: (in thousands) December 31, 2020 December 31, 2019 Accrued payroll $ 808 $ 694 Accrued bonus 811 1,306 Accrued commissions 1,001 877 Accrued product warranties 498 452 Accrued product liability claim insurance deductibles 435 1,170 Accrued professional fees 222 1,383 Joint and several payroll liability 1,027 1,045 Uncertain tax positions 1,658 1,491 Sales tax payable 591 492 Other accrued expenses and current liabilities 227 486 Total accrued expenses and other current liabilities $ 7,278 $ 9,396

PRODUCT WARRANTIES (Tables)

PRODUCT WARRANTIES (Tables)	12 Months Ended
	Dec. 31, 2020
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Activity	Product warranty activity consisted of the following for the years ended: (In thousands) December 31, December 31, Beginning balance $ 452 $ 348 Provision for product warranties 215 321 Product warranty expenses incurred (169) (217) Accrued product warranties $ 498 $ 452

EARNINGS (LOSS) PER SHARE (Tabl

EARNINGS (LOSS) PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Basic and Diluted Earnings (Loss) Per Share	The following table provides the computation of basic and diluted earnings (loss) per share. Year Ended December 31, (in thousands, except per share data) 2020 2019 Numerators: Net loss attributable to stockholders $ (11,896) $ (19,706) Weighted average shares outstanding - basic and diluted 34,212 34,069 Loss per share - basic and diluted $ (0.35) $ (0.58) Anti-dilutive instruments excluded from diluted loss per common share: Options 4,939 3,967

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components Of Provision For Income Taxes	Components of the provision for income taxes are as follows: (In thousands) December 31, December 31, 2019 Current: Federal $ (3,682) $ (12) State (120) (205) Foreign (37) 87 (3,839) (130) Release of valuation allowance due to CARES Act (3,664) — (7,503) (130) Deferred: Federal (25) (3,989) State (1,004) (741) (1,029) (4,730) Valuation allowance 1,029 4,730 Total provision for income tax $ (7,503) $ (130)
Statutory Federal Income Tax Rate	Below is a reconciliation of the statutory federal income tax rate to the Company's effective tax rate: Year Ended December 31, 2020 2019 Federal tax provision 21.0 % 21.0 % State taxes (net of federal benefit) 5.1 % 4.3 % Valuation allowance (5.3) % (23.8) % NOL carryback from CARES Act 18.9 % — % Other (1.0) % (0.8) % Total 38.7 % 0.7 %
Deferred Tax Assets (Liabilities)	Major components of the Company’s deferred tax assets (liabilities) are as follows: (In thousands) December 31, December 31, 2019 Deferred tax assets: Loss and credit carryforwards $ 1,888 $ 4,779 Stock-based compensation 1,603 1,004 Other 745 1,133 Total deferred tax assets 4,236 6,916 Valuation allowance (3,837) (6,472) Total deferred tax assets, net of valuation allowance 399 444 Deferred tax liabilities: Property and equipment (278) (245) Other (121) (199) Total deferred tax liabilities (399) (444) Net deferred tax assets $ — $ —
Unrecognized Tax Benefits Roll-Forward	The following is a roll-forward of the Company's total gross unrecognized tax benefits, not including interest and penalties, for the years ended December 31: (in thousands) Gross Unrealized Tax Benefits 2020 2019 Beginning of year balance $ 1,313 $ 1,313 Additions of tax positions related to the current year — — Additions of tax positions related to the prior year — — Decreases for tax positions related to prior year — — End of year balance $ 1,313 $ 1,313

STOCK OPTIONS (Tables)

STOCK OPTIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of Stock Options And Stock Awards	The status of the Company's stock options is summarized as follows: Number of options Weighted average exercise price Outstanding at December 31, 2018 3,254,779 $ 3.18 Granted 1,379,500 7.70 Exercised (410,635) 2.99 Canceled and forfeited (256,785) 4.76 Outstanding at December 31, 2019 3,966,858 $ 4.67 Granted 1,376,900 7.94 Exercised (112,965) 3.37 Canceled and forfeited (291,850) 7.19 Outstanding at December 31, 2020 4,938,943 $ 5.46
Number of Weighted Average Grant-Date Fair Values of Options	Number of options Weighted average grant date fair value Non-vested at December 31, 2019 1,484,929 $ 4.11 Granted 1,376,900 4.78 Vested (665,510) 3.77 Forfeited (151,850) 4.53 Non-vested at December 31, 2020 2,044,469 $ 4.61
Schedule of Option Fair Value Assumptions	Inputs used in the valuation models are as follows: 2020 Grants 2019 Grants Option value $4.98 — $8.18 $7.15 — $7.91 Risk-free rate 0.3% - 1.7% 1.7% — 2.6% Expected dividend yield —% —% Expected volatility 65.9% - 70.1% 64.9% — 66.4% Expected term (in years) 6 4.5 - 6

GEOGRAPHIC AND SEGMENT INFORM_2

GEOGRAPHIC AND SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Schedule of Reporting Information by Segment	Summarized financial information with respect to reportable segments is as follows: Year ended December 31, 2020 (In thousands) Advanced Energy OEM Corporate (Other) Total Sales $ 22,214 $ 5,497 $ — 27,711 Income (loss) from operations (7,128) 1,838 (14,793) (20,083) Interest income — — 241 241 Interest expense — — (46) (46) Other income, net — — 479 479 Income tax benefit — — 7,503 7,503 Year ended December 31, 2019 (In thousands) Advanced Energy OEM Corporate (Other) Total Sales $ 22,676 $ 5,559 $ — $ 28,235 Income (loss) from operations (8,045) 2,136 (14,960) (20,869) Interest income — — 1,392 1,392 Interest expense — — (8) (8) Other losses, net — — (351) (351) Income tax benefit — — 130 130
Schedule of Revenue by Geographic Area	Revenue by geographic region, based on the "ship to" location on the invoice are as follows: Year Ended December 31, (In thousands) 2020 2019 Sales by Domestic and International Domestic $ 18,812 $ 19,584 International 8,899 8,651 Total $ 27,711 $ 28,235

SIGNIFICANT ACCOUNTING POLICI_3

SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Credit terms, billing term, lower limit	10 days
Credit terms, billing term, upper limit	90 days
Allowances for doubtful accounts	$ 300	$ 273
Contract liabilities	600	400
Contract assets	200	100
Advertising expense	$ 800	$ 1,500
Apyx SY Medical Devices (Ningbo) Co., Ltd
Property, Plant and Equipment [Line Items]
Ownership percentage	51.00%
Building and improvements
Property, Plant and Equipment [Line Items]
Useful lives	39 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Computer equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Computer equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Molds | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	7 years
Molds | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	15 years
Renuvion/J-Plasma generators
Property, Plant and Equipment [Line Items]
Product warranty	4 years
Mounting Fixtures
Property, Plant and Equipment [Line Items]
Product warranty	2 years
Accessories
Property, Plant and Equipment [Line Items]
Product warranty	1 year

DISPOSITION OF THE CORE BUSIN_2

DISPOSITION OF THE CORE BUSINESS - (Details) - USD ($) $ in Millions	Aug. 30, 2018	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the disposition of Core business	$ 97
Symmetry Surgical Inc. | Electro Surgical Disposables and Accessories, Cauteries and Other Products Supply Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset purchase agreement, term	4 years
Revenue		$ 9.4	$ 9.4
Cost of sales		8.1	8.8
Operating expenses		0.8	0.5
Net other income		$ 0.5	$ 0.1

INTEREST IN JOINT VENTURE INV_3

INTEREST IN JOINT VENTURE INVESTMENT - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Required capital contribution	$ 357	$ 357
Contributions from non-controlling interest	148
China joint venture
Noncontrolling Interest [Line Items]
Contributions from non-controlling interest	$ 154

INTEREST IN JOINT VENTURE INV_4

INTEREST IN JOINT VENTURE INVESTMENT - Changes in Ownership Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity Attributable to Noncontrolling Interest [Abstract]
Beginning interest in China JV	$ 0
Contributions	148
Net loss attributable to Apyx	(10)	$ 0
Ending interest in China JV	138	0
China joint venture
Stockholders' Equity Attributable to Noncontrolling Interest [Abstract]
Beginning interest in China JV	0
Contributions	154
Net loss attributable to Apyx	(10)
Ending interest in China JV	$ 144	$ 0
Chinese Supplier
Noncontrolling Interest [Line Items]
Ownership interest	51.00%

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 2,243	$ 2,935
Work in process	1,109	1,209
Finished goods	1,087	1,316
Gross inventories	4,439	5,460
Less: provision for obsolescence	(388)	(392)
Inventories, net	4,051	$ 5,068
Inventory write-down	400
Inventory write down reversals	$ 100

PROPERTY AND EQUIPMENT - Schedu

PROPERTY AND EQUIPMENT - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 10,931	$ 10,872
Less: accumulated depreciation and amortization	(4,813)	(4,403)
Property and equipment in service	6,118	6,469
Construction in progress	423	149
Property and equipment, net	6,541	6,618
Depreciation	700	700
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,600	1,600
Building and improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	4,454	4,423
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	2,113	2,187
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	290	292
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,505	1,409
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	156	156
Molds
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 813	$ 805

LEASES - Narrative (Details)

LEASES - Narrative (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Discount rate	4.00%
Sophia, Bulgaria
Lessee, Lease, Description [Line Items]
Lease term		2 years

LEASES - Lease Cost (Details)

LEASES - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease costs	$ 124	$ 115
Amortization of right-of-use assets	216	57
Interest on lease liabilities	22	8
Variable lease costs	13	16
Total lease costs	$ 375	$ 196

LEASES - Cash and Non-Cash Info

LEASES - Cash and Non-Cash Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating
Cash paid for lease liabilities	$ 110	$ 106
Finance
Cash paid for lease liabilities	251	68
Lease Remeasurement
Operating
Right-of-use assets capitalized and lease liabilities	0	207
Finance
Right-of-use assets capitalized and lease liabilities	0	0
Lease Execution
Operating
Right-of-use assets capitalized and lease liabilities	0	28
Finance
Right-of-use assets capitalized and lease liabilities	0	710
Topic 842
Operating
Right-of-use assets capitalized and lease liabilities	0	212
Finance
Right-of-use assets capitalized and lease liabilities	$ 0	$ 0

LEASES - Lease Terms and Discou

LEASES - Lease Terms and Discount Rates (Details)	Dec. 31, 2020	Dec. 31, 2019
Operating
Weighted average remaining lease term	2 years	3 years
Weighted average discount rate	4.03%	4.04%
Finance
Weighted average remaining lease term	1 year 8 months 12 days	2 years 8 months 12 days
Weighted average discount rate	4.00%	4.00%

LEASES - Maturities of Lease Li

LEASES - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating
2021	$ 134
2022	131
2023	0
Total lease payments	265
Less imputed interest	(10)
Present value of lease liabilities	255
Less current portion of lease liabilities	(126)	$ (108)
Long-term operating lease liabilities	129	235
Finance
2021	236
2022	183
2023	18
Total lease payments	437
Less imputed interest	(16)
Present value of lease liabilities	421
Less current portion of lease liabilities	(238)	(229)
Long-term finance lease liabilities	$ 183	$ 421

ACCRUED EXPENSES AND OTHER CU_3

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued payroll	$ 808	$ 694
Accrued bonus	811	1,306
Accrued commissions	1,001	877
Accrued product warranties	498	452
Accrued product liability claim insurance deductibles	435	1,170
Accrued professional fees	222	1,383
Joint and several payroll liability	1,027	1,045
Uncertain tax positions	1,658	1,491
Sales tax payable	591	492
Other accrued expenses and current liabilities	227	486
Total accrued expenses and other current liabilities	$ 7,278	$ 9,396

PRODUCT WARRANTIES (Details)

PRODUCT WARRANTIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 452	$ 348
Provision for product warranties	215	321
Product warranty expenses incurred	(169)	(217)
Accrued product warranties	$ 498	$ 452

JOINT AND SEVERAL PAYROLL LIA_2

JOINT AND SEVERAL PAYROLL LIABILITY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Joint and several payroll liability	$ 1,045	$ 1,027
Joint and several payroll expense	300
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Joint and several payroll liability	$ 1,000

EARNINGS (LOSS) PER SHARE (Deta

EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerators:
Net loss attributable to stockholders	$ (11,896)	$ (19,706)
Weighted average number of shares outstanding - basic and diluted (in shares)	34,212	34,069
Loss per share - basic and diluted (in dollars per share)	$ (0.35)	$ (0.58)
Stock options
Anti-dilutive instruments excluded from diluted loss per common share:
Options (in shares)	4,939	3,967

FINANCIAL INSTRUMENTS (Details)

FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Cash	$ 2,250	$ 2,237
US Treasury securities	$ 39,665	$ 56,575

INCOME TAXES - Components of Pr

INCOME TAXES - Components of Provision For Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ (3,682)	$ (12)
State	(120)	(205)
Foreign	(37)	87
Current income tax expense (benefit)	(3,839)	(130)
Release of valuation allowance due to CARES Act	(3,664)	0
Current income tax expense (benefit), after valuation allowance	(7,503)	(130)
Deferred:
Federal	(25)	(3,989)
State	(1,004)	(741)
Deferred income tax expense (benefit)	(1,029)	(4,730)
Valuation allowance	1,029	4,730
Total provision for income tax	$ (7,503)	$ (130)

INCOME TAXES - Reconciliation o

INCOME TAXES - Reconciliation of Statutory Federal Income Tax Rate to Effective Rate (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the statutory federal income tax rate to our effective tax rate
Federal tax provision	21.00%	21.00%
State taxes (net of federal benefit)	5.10%	4.30%
Valuation allowance	(5.30%)	(23.80%)
NOL carryback from CARES Act	18.90%	0.00%
Other	(1.00%)	(0.80%)
Total	38.70%	0.70%

INCOME TAXES - Deferred Tax Ass

INCOME TAXES - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Loss and credit carryforwards	$ 1,888	$ 4,779
Stock-based compensation	1,603	1,004
Other	745	1,133
Total deferred tax assets	4,236	6,916
Valuation allowance	(3,837)	(6,472)
Total deferred tax assets, net of valuation allowance	399	444
Deferred tax liabilities:
Property and equipment	(278)	(245)
Other	(121)	(199)
Total deferred tax liabilities	(399)	(444)
Net deferred tax assets	$ 0	$ 0

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax benefit	$ 3,700
Net operating loss carryback	3,700
Unrecognized tax benefits	1,313	$ 1,313	$ 1,313
Accrued interest and penalties	$ 400	$ 200

INCOME TAXES - Unrecognized Tax

INCOME TAXES - Unrecognized Tax Benefits Roll-Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Gross Unrealized Tax Benefits
Beginning of year balance	$ 1,313	$ 1,313
Additions of tax positions related to the current year	0	0
Additions of tax positions related to the prior year	0	0
Decreases for tax positions related to prior year	0	0
End of year balance	$ 1,313	$ 1,313

RETIREMENT PLAN - Narrative (De

RETIREMENT PLAN - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Defined contribution plan, vesting period	3 years
Defined contribution plan, vesting percentage after 3 years	100.00%
Defined contribution plan, employer matching contribution	50.00%
Defined contribution plan, percent of employees' gross pay	3.00%
Company matching contributions	$ 0.3	$ 0.3

RELATED PARTY TRANSACTIONS - Na

RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Note payable issued		$ 100
Co-venturer
Related Party Transaction [Line Items]
Purchases from supplier	$ 1,441	2,643
Due to supplier	$ 38	$ 29

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Purchase commitments	$ 1,900
Required capital contribution	$ 357	$ 357
Pending Litigation
Other Commitments [Line Items]
Total loss contingency accrued		1,000
Cost accrued		$ 820
Largest Customer | Sales | Customer Concentration Risk
Other Commitments [Line Items]
Concentration receivable risk	10.00%	11.00%
China joint venture
Other Commitments [Line Items]
Remaining payments to acquire interest in joint venture	$ 203

STOCK OPTIONS - Narrative (Deta

STOCK OPTIONS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 29, 2020	Oct. 31, 2015	Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2019	Aug. 31, 2017	Jul. 31, 2015	Jul. 31, 2012	Oct. 30, 2007	Dec. 31, 2001
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option expiration period			10 years
Option vesting period	3 years
Granted (in shares)	700,000		1,376,900	1,379,500
Share-based compensation expense			$ 4,210	$ 3,581
Closing stock price for computation of intrinsic value (in dollars per share)			$ 7.20
Stock options outstanding and expected to vest (in shares)			4,530,049
Aggregate intrinsic value of all stock options outstanding and expected to vest			$ 10,250
Stock options outstanding and expected to vest, weighted average exercise price (in dollars per share)			$ 5.26
Stock options outstanding and exercisable, weighted average remaining contractual term			7 years
Stock options outstanding and exercisable (in shares)			2,894,474
Aggregate intrinsic value of currently exercisable stock options			$ 9,800
Weighted average exercise price (in dollars per share)			$ 3.89
Weighted average remaining contractual term			6 years
Intrinsic value of options exercised			$ 200	1,420
Intrinsic value of options granted			$ 6,580	$ 6,300
Weighted average grant date fair value of options granted (in dollars per share)			$ 4.78	$ 4.57
Fair value of option shares vested			$ 2,510	$ 2,130
Shares received in stock swaps (in shares)			39,448	125,948
Shares issued in stock swaps (in shares)			47,088	222,601
Unrecognized stock-based compensation cost			$ 5,910
Unrecognized stock-based compensation cost, recognition period			1 year
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period			1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period			7 years
Restricted
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period		5 years
Grants to date (in shares)		225,922
2001 Executive and Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)										1,200,000
2003 Executive and Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)									1,700,000
2012 Share Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)								750,000
Remaining shares for issuance (in shares)			60,000
2015 Executive and Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)							2,000,000
Remaining shares for issuance (in shares)			230,000
2017 Executive and Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)						3,000,000
Remaining shares for issuance (in shares)			70,000
2019 Share Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under common stock option plans (in shares)					2,000,000
Remaining shares for issuance (in shares)			2,000,000

STOCK OPTIONS - Summary of Stoc

STOCK OPTIONS - Summary of Stock Options (Details) - $ / shares	Jan. 29, 2020	Dec. 31, 2020	Dec. 31, 2019
Number of options
Outstanding, beginning of period (in shares)		3,966,858	3,254,779
Granted (in shares)	700,000	1,376,900	1,379,500
Exercised (in shares)		(112,965)	(410,635)
Cancelled and forfeited (in shares)		(291,850)	(256,785)
Outstanding, end of period (in shares)		4,938,943	3,966,858
Weighted average exercise price
Outstanding, beginning of period (in dollars per share)		$ 4.67	$ 3.18
Granted (in dollars per share)		7.94	7.70
Exercised (in dollars per share)		3.37	2.99
Cancelled and forfeited (in dollars per share)		7.19	4.76
Outstanding, end of period (in dollars per share)		$ 5.46	$ 4.67

STOCK OPTIONS - Summary of Nonv

STOCK OPTIONS - Summary of Nonvested Stock Options (Details) - $ / shares	Jan. 29, 2020	Dec. 31, 2020	Dec. 31, 2019
Number of options
Number of Options Non-vested at beginning of period (in shares)		1,484,929
Number of Options Non-vested, Granted (in shares)	700,000	1,376,900	1,379,500
Number of Options Non-vested, Vested (in shares)		(665,510)
Number of Options Non-vested, Forfeited (in shares)		(151,850)
Number of Options Non-vested at end of period (in shares)		2,044,469	1,484,929
Weighted average grant date fair value
Weighted average grant date fair value, Non-vested Options at beginning of period (in dollars per share)		$ 4.11
Weighted average grant date fair value, Non-vested Options, Granted (in dollars per share)		4.78	$ 4.57
Weighted average grant date fair value, Non-vested Options, Vested (in dollars per share)		3.77
Weighted average grant date fair value, Non-vested Options, Forfeited (in dollars per share)		4.53
Weighted average grant date fair value, Non-vested Options at end of period (in dollars per share)		$ 4.61	$ 4.11

STOCK OPTIONS STOCK OPTIONS - F

STOCK OPTIONS STOCK OPTIONS - Fair Value Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option value (in dollars per share)	$ 7.94	$ 7.70
Expected dividend yield	0.00%	0.00%
Expected volatility - minimum	65.90%	64.90%
Expected volatility - maximum	70.10%	66.40%
Expected term (in years)	6 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option value (in dollars per share)	$ 4.98	$ 7.15
Risk-free rate	0.30%	1.70%
Expected term (in years)		4 years 6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option value (in dollars per share)	$ 8.18	$ 7.91
Risk-free rate	1.70%	2.60%
Expected term (in years)		6 years

GEOGRAPHIC AND SEGMENT INFORM_3

GEOGRAPHIC AND SEGMENT INFORMATION - Narrative (Details) - segment	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Number of operating segments	2
International sales	32.10%	30.60%

GEOGRAPHIC AND SEGMENT INFORM_4

GEOGRAPHIC AND SEGMENT INFORMATION - Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 27,711	$ 28,235
Income (loss) from operations	(20,083)	(20,869)
Interest income	241	1,392
Interest expense	(46)	(8)
Other income (loss), net	479	(351)
Income tax benefit	7,503	130
Operating Segments | Advanced Energy
Segment Reporting Information [Line Items]
Sales	22,214	22,676
Income (loss) from operations	(7,128)	(8,045)
Interest income	0	0
Interest expense	0	0
Other income (loss), net	0	0
Income tax benefit	0	0
Operating Segments | OEM
Segment Reporting Information [Line Items]
Sales	5,497	5,559
Income (loss) from operations	1,838	2,136
Interest income	0	0
Interest expense	0	0
Other income (loss), net	0	0
Income tax benefit	0	0
Corporate (Other)
Segment Reporting Information [Line Items]
Sales	0	0
Income (loss) from operations	(14,793)	(14,960)
Interest income		1,392
Interest expense	(46)	(8)
Other income (loss), net	479	(351)
Income tax benefit	$ 7,503	$ 130

GEOGRAPHIC AND SEGMENT INFORM_5

GEOGRAPHIC AND SEGMENT INFORMATION - Geographic (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 27,711	$ 28,235
Domestic
Segment Reporting Information [Line Items]
Sales	18,812	19,584
International
Segment Reporting Information [Line Items]
Sales	$ 8,899	$ 8,651