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Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2013
Principles of Consolidation | PRINCIPLES OF CONSOLIDATION The accompanying consolidated financial statements include the accounts of Zynex, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Noncontrolling Interest | NONCONTROLLING INTEREST Noncontrolling interest in the equity of a subsidiary is accounted for and reported as equity. Noncontrolling interest represents the 20% ownership in the Company’s majority-owned subsidiary, ZBC. In 2012, the noncontrolling interest member contributed $10 of property and equipment to ZBC.
Use of Estimates | USE OF ESTIMATES Preparation of financial statements in conformity with generally accepted accounting principles in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The most significant management estimates used in the preparation of the accompanying consolidated financial statements are associated with the allowance for contractual adjustments and uncollectible accounts receivable, the reserve for obsolete and damaged inventory, stock-based compensation, valuation of goodwill and other long-lived assets, and income taxes.
Revenue Recognition and Allowances for Provider Discounts and Collectability | REVENUE RECOGNITION AND ALLOWANCES FOR PROVIDER DISCOUNTS AND COLLECTABILITY The Company recognizes revenue when each of the following four conditions are met, 1) a contract or sales arrangement exists, 2) products have been shipped and title has transferred, or rental services have been rendered, 3) the price of the products or services is fixed or determinable and, 4) collectability is reasonably assured. Accordingly, the Company recognizes revenue, both rental and sales, when products have been delivered to the patient and the patient’s insurance (if the patient has insurance) has been verified. For medical products that are sold from inventories consigned at clinic locations, the Company recognizes revenue when it receives notice that the product has been prescribed and delivered to the patient and the patient’s insurance coverage has been verified or preauthorization has been obtained from the insurance company, when required. Revenue from the rental of products is normally on a month-to-month basis and is recognized ratably over the products’ rental period. Revenue from sales to distributors is recognized when the Company ships its products, which fulfills its order and transfers title. Revenue is reported net, after adjustments for estimated insurance company or governmental agency (collectively “Third-party Payors”) reimbursement deductions. The deductions are known throughout the health care industry as “contractual adjustments” whereby the Third-party Payors unilaterally reduce the amount they reimburse for the Company’s products. (2) SIGNIFICANT ACCOUNTING POLICIES (continued) A significant portion of the Company’s revenues are derived, and the related receivables are due, from Third-party Payors. The nature of these receivables within this industry has typically resulted in long collection cycles. The process of determining what products will be reimbursed by Third-party Payors and the amounts that they will reimburse is complex and depends on conditions and procedures that vary among providers and may change from time to time. The Company maintains an allowance for contractual adjustments and records additions to the allowance to account for the risk of nonpayment. Contractual adjustments result from reimbursements from Third-party Payors that are less than amounts claimed or where the amount claimed by the Company exceeds the Third-party Payors’ usual, customary and reasonable reimbursement rate. The Company determines the amount of the allowance, and adjusts it at the end of each reporting period, based on a number of factors, including historical rates of collection, the aging of the receivables, trends in the historical rates of collection and current relationships and experience with the Third-party Payors. If the rates of collection of past-due receivables recorded for previous fiscal periods changes, or if there is a trend in the rates of collection on those receivables, the Company may be required to change the rate at which it provides for additions to the allowance. A change in the rates of the Company’s collections can result from a number of factors, including experience and training of billing personnel, changes in the reimbursement policies or practices of Third-party Payors, or changes in industry rates of reimbursement. Accordingly, changes to the allowance for contractual adjustments, which are recorded in the income statement as a reduction of revenue, have historically fluctuated and may continue to fluctuate significantly from quarter to quarter. Due to the nature of the industry and the reimbursement environment in which the Company operates, estimates are required to record net revenues and accounts receivable at their net realizable values. Inherent in these estimates is the risk that they will have to be revised or updated as additional information becomes available. Specifically, the complexity of third-party billing arrangements and the uncertainty of reimbursement amounts for certain products or services from payors or an unanticipated requirements to refund payments previously received may result in adjustments to amounts originally recorded. Due to continuing changes in the health care industry and third-party reimbursement, as well as changes in our billing practices to increase cash collections, it is possible that management’s estimates could change in the near term, which could have an impact on our results of operations and cash flows. Any differences between estimated settlements and final determinations are reflected as an increase or a reduction to revenue in the period when such final determinations are known. The Company frequently receives refund requests from insurance providers relating to specific patients and dates of service. Billing and reimbursement disputes are very common in the Company’s industry. These requests are sometimes related to a limited number of patients or products; at other times, they include a significant number of refund claims in a single request. The Company reviews and evaluates these requests and determines if any refund request is appropriate. The Company also reviews these refund claims when it is rebilling or pursuing reimbursement from that insurance provider. The Company frequently has significant offsets against such refund requests, and sometimes amounts are due to the Company in excess of the amounts of refunds requested by the insurance providers. Therefore, at the time of receipt of such refund requests, the Company is generally unable to determine if a refund request is valid and should be accrued. As of December 31, 2013, the Company believes it has an adequate allowance for contractual adjustments relating to all known insurance disputes and refund requests. However, no assurances can be given with respect to such estimates of reimbursements and offsets or the ultimate outcome of any refund requests. In addition to the allowance for contractual adjustments, the Company records an allowance for uncollectible accounts receivable. Uncollectible accounts receivable are primarily a result of non-payment from patients who have been direct billed for co-payments or deductibles, lack of appropriate insurance coverage and disallowances of charges by Third-party Payors. If there is a change to a material insurance provider contract or policy, application by a provider, a decline in the economic condition of providers or a significant turnover of Company billing personnel resulting in diminished collection effectiveness, the estimate of the allowance for uncollectible accounts receivable may not be adequate and may result in an increase in the future. At December 31, 2013 and 2012, the allowance for uncollectible accounts receivable is $1,837.
Fair Value of Financial Instruments | FAIR VALUE OF FINANCIAL INSTRUMENTS The Company’s financial instruments at December 31, 2013 include cash, accounts receivable and accounts payable, for which current carrying amounts approximate fair value due to their short-term nature. Financial instruments at December 31, 2013 also include the line of credit and notes payable, the carrying value of which approximates fair value because the interest rates on the outstanding borrowings are at rates that approximate market rates for borrowings with similar terms and average maturities.
Inventory | INVENTORY Inventories, which primarily represent finished goods, are valued at the lower of cost (average) or market. Finished goods include products held at the Company’s headquarters and at different locations by health care providers or other third parties for rental or sale to patients. Total (gross) inventories at December 31, 2013 included $5,120 of finished goods, $310 of parts and $850 of supplies. Total (gross) inventories at December 31, 2012 included $6,042 of finished goods, $533 of parts and $766 of supplies. The Company monitors inventory for turnover and obsolescence and records losses for excess and obsolete inventory, as appropriate. The Company provides reserves for estimated excess and obsolete inventories equal to the difference between the costs of inventories on hand and the estimated market value based upon assumptions about future demand. If future demand is less favorable than currently projected by management, additional inventory write-downs may be required. To fulfill orders faster, the Company places a large amount of its inventory with field sales representatives. This increases the sensitivity of these products to obsolescence reserve estimates. As this inventory is not in the Company’s possession, management maintains additional reserves for estimated shrinkage of these inventories based on the Company’s aging. At December 31, 2013 and 2012, the Company had an allowance for obsolete and damaged inventory of approximately $1,278 and $1,181 respectively. In addition, during the year ended December 31, 2013, the Company wrote off a portion of its field inventory totaling approximately $1,340, as a result of changes in industry conditions driven primarily by health care reform. These changes caused a reduction in the Company’s field sales force which negatively impacted its field inventory. The Company had $1,000 of open purchase commitments at December 31, 2013.
Property and Equipment | PROPERTY AND EQUIPMENT Property and equipment are stated at cost. Products on rental contracts are placed in property and equipment and depreciated over their estimated useful life. The Company removes the cost and the related accumulated depreciation from the accounts of assets sold or retired, and the resulting gains or losses are included in the results of operations. Depreciation is computed using the straight-line method. As rental inventory contributes directly to the revenue generating process, the Company classifies the depreciation of rental inventory to cost of revenue. Repairs and maintenance costs are charged to expense as incurred.
Shipping Costs | SHIPPING COSTS Shipping costs are included in cost of sales and rentals.
Goodwill and Intangible Assets | GOODWILL AND INTANGIBLE ASSETS Goodwill represents the excess of the purchase price over the fair value of the net assets of the business acquired. Authoritative guidance requires that goodwill be assessed for impairment at the reporting unit level (operating segment or one level below an operating segment) on an annual basis and between annual tests when circumstances indicate that the recoverability of the carrying amount of goodwill may be in doubt. Application of the goodwill impairment assessment requires judgment, including the identification of reporting units, assigning assets and liabilities to reporting units, assigning goodwill to reporting units, and determining the fair value. Significant judgments are required to estimate the fair value of a reporting unit including estimating future cash flows, determining appropriate discount rates and other assumptions. When conducting its goodwill impairment assessment, the Company initially performs a qualitative evaluation to determine if it is more likely than not that the fair value of its reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform a two-step goodwill impairment test. (2) SIGNIFICANT ACCOUNTING POLICIES (continued) The Company determined, based on its qualitative evaluation, that it was necessary to perform the two-step goodwill impairment test during the second and fourth quarters of 2013, primarily because of the significant decline in sales in its ZMI electrotherapy products. In March 2012, the Company acquired substantially all of the assets and business of NeuroDyne Medical Corp. (NeuroDyne). The Company modified its business forecast for NeuroDyne during 2013, resulting in reduced estimated sales and cash flow, as compared to the original business forecast at the time of the acquisition. Management therefore performed the two-step goodwill impairment test and determined that goodwill related to NeuroDyne was impaired and recorded a $251 goodwill impairment charge during the year ended December 31, 2013. Intangible assets with estimable lives are amortized in a pattern consistent with the asset’s identifiable cash flows or using a straight- line method over their remaining estimated benefit periods if the pattern of cash flows is not estimable. The Company reviews the carrying value of intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of long-lived assets is measured by comparison of their carrying amounts to the undiscounted cash flows that the asset or asset group is expected to generate. If the carrying amount of the assets exceeds the undiscounted cash flows the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. The Company’s intangible assets include assets acquired in the acquisition of NeuroDyne. The Company modified its business forecast for NeuroDyne during 2013, resulting in reduced estimated sales and cash flow, as compared to the original business forecast at the time of the acquisition. Therefore, the Company recorded an impairment charge of $160 during the year ended December 31, 2013 related to the NeuroDyne intangible assets. The Company utilized a discounted cash flow (DCF) model to determine fair value for both goodwill and intangible assets as of December 31, 2013.
Capitalized Software Development Costs | CAPITALIZED SOFTWARE DEVELOPMENT COSTS The Company capitalizes software development costs incurred during the application development stage related to new software or major enhancements to the functionality of existing software that is developed solely to meet the entity’s internal operational needs and when no substantive plans exist or are being developed to market the software externally. Costs capitalized include external direct costs of materials and services and internal payroll and payroll-related costs. Any costs during the preliminary project stage or related to training or maintenance are expensed as incurred. Capitalization ceases when the software project is substantially complete and ready for its intended use. The capitalization and ongoing assessment of recoverability of development costs requires considerable judgment by management with respect to certain external factors, including, but not limited to, technological and economic feasibility, and estimated economic life. When the projects are ready for their intended use, the Company amortizes such costs over their estimated useful lives of five years.
Stock-based Compensation | STOCK-BASED COMPENSATION The Company accounts for stock-based compensation through recognition of the cost of employee services received in exchange for an award of equity instruments, which is measured based on the grant date fair value of the award that is ultimately expected to vest during the period. The stock-based compensation expense is generally recognized over the period during which an employee is required to provide service in exchange for the award (the requisite service period, which in the Company’s case is the same as the vesting period). For awards subject to the achievement of performance metrics, stock based compensation expense is recognized when it becomes probable that the performance condition will be achieved.
Advertising | ADVERTISING The Company expenses advertising costs as they are incurred. Advertising expense for the years ended December 31, 2013 and 2012 was approximately $115 and $95, respectively.
Research and Development | RESEARCH AND DEVELOPMENT Research and development costs are expensed when incurred. Research and development expense for the years ended December 31, 2013 and 2012 was approximately $754 and $874, respectively. Research and development costs as well as salaries related to research and development are included in selling, general and administrative expenses.
Income Taxes | INCOME TAXES The provision for income taxes includes taxes payable or refundable for the current period and the deferred tax consequences of transactions that have been recognized in the Company’s consolidated financial statements or income tax returns. Temporary differences result primarily from basis differences in property and equipment, accounts receivable, inventory and deferred rent. The carrying value of deferred tax assets is determined based on an evaluation of whether the Company is more likely than not to realize the assets. A valuation allowance is established, when considered necessary, to reduce deferred tax assets to the amounts expected to be realized. The Company accounts for uncertain tax positions in accordance with the accounting standard related to income taxes. The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense. As of December 31, 2013 and 2012, the Company had accrued unrecognized tax benefits, penalties and interest of $194 and $67, respectively. The Company files income tax returns in the U.S. and various state jurisdictions, and there are open statutes of limitations for taxing authorities to audit our tax returns from 2010 through the current period.
Foreign Currency Transactions | FOREIGN CURRENCY TRANSACTIONS Foreign currency transaction gains and losses are included in other income (expense) in the accompanying consolidated statements of operations. Foreign currency transaction gains for the years ended December 31, 2013 and 2012 were insignificant.
Reclassifications | RECLASSIFICATIONS Certain reclassifications have been made to the prior years’ consolidated financial statements to conform to the current year presentation. These reclassifications had no effect on previously reported results of operations.
Recent Accounting Pronouncements | RECENT ACCOUNTING PRONOUNCEMENTS In July 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2013-11 “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.” Under ASU 2013-11, an entity is required to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. If a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this guidance affects presentation only and, therefore, it is not expected to have a material impact on the Company's financial condition, results of operations or cash flows. Management has evaluated other recently issued accounting pronouncements and does not believe that any of these pronouncements will have an impact on the Company’s consolidated financial statements.

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- Definition Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 + Details
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- Definition Disclosure of accounting policy for costs it has incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2127266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Research and Development -URI http://asc.fasb.org/extlink&oid=6523717 + Details
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- Definition Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(f) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2228939 + Details
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- Definition Disclosure of accounting policy for the classification of shipping and handling costs, including whether the costs are included in cost of sales or included in other income statement accounts. If shipping and handling fees are significant and are not included in cost of sales, disclosure includes both the amounts of such costs and the line item on the income statement which includes such costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6408196&loc=d3e61069-111654 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Handling Costs -URI http://asc.fasb.org/extlink&oid=6514758 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21915142&loc=d3e60635-111653 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6408413&loc=d3e221937-122793 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Shipping Costs -URI http://asc.fasb.org/extlink&oid=6525344 + Details
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- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 + Details
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