$ZYXI
ZYNEX INC

2018 Q4 Form 10-K Financial Statement

#000114420419010229 Filed on February 26, 2019

View on sec.gov

Income Statement

Concept 2018 Q4 2018 Q3 2018 Q2
Revenue $9.337M $8.131M $7.573M
YoY Change 14.79% 19.22% 50.2%
Cost Of Revenue $1.830M $1.641M $1.330M
YoY Change -59.71% -57.76% -57.21%
Gross Profit $7.510M $6.490M $6.243M
YoY Change 109.08% 121.12% 222.8%
Gross Profit Margin 80.43% 79.82% 82.44%
Selling, General & Admin $4.630M $3.670M $3.528M
YoY Change 53.82% 44.6% 68.97%
% of Gross Profit 61.65% 56.55% 56.51%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses $4.630M $3.670M $3.528M
YoY Change 53.82% 44.6% 68.97%
Operating Profit $2.880M $2.820M $2.715M
YoY Change -19.82% -3.92% 40.38%
Interest Expense $0.00 $1.000K $37.00K
YoY Change -100.0% -99.86% -90.61%
% of Operating Profit 0.0% 0.04% 1.36%
Other Income/Expense, Net -$1.000K -$37.00K
YoY Change -99.86% -90.61%
Pretax Income $2.880M $2.819M $2.678M
YoY Change -14.03% 25.62% 73.9%
Income Tax $260.0K $228.0K $260.0K
% Of Pretax Income 9.03% 8.09% 9.71%
Net Earnings $2.622M $2.591M $2.418M
YoY Change -20.74% 17.77% 60.77%
Net Earnings / Revenue 28.08% 31.87% 31.93%
Basic Earnings Per Share $0.08 $0.07
Diluted Earnings Per Share $77.84K $0.08 $0.07
COMMON SHARES
Basic Shares Outstanding 32.28M shares 32.52M shares 32.62M shares
Diluted Shares Outstanding 33.93M shares 34.17M shares

Balance Sheet

Concept 2018 Q4 2018 Q3 2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments $10.13M $8.100M $6.290M
YoY Change 81.87% 215.18% 4392.86%
Cash & Equivalents
Short-Term Investments
Other Short-Term Assets $570.0K $360.0K $580.0K
YoY Change 185.0% 71.43% 346.15%
Inventory $837.0K $796.0K $518.0K
Prepaid Expenses $568.0K $364.0K $579.0K
Receivables $2.791M $2.898M $2.863M
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $14.32M $12.15M $10.25M
YoY Change 71.11% 118.91% 247.29%
LONG-TERM ASSETS
Property, Plant & Equipment $819.0K $829.0K $778.0K
YoY Change 335.64% 145.27% 55.6%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $1.040M $310.0K $370.0K
YoY Change 181.08% 244.44% 516.67%
Total Long-Term Assets $4.927M $1.143M $1.148M
YoY Change 782.97% 164.58% 101.4%
TOTAL ASSETS
Total Short-Term Assets $14.32M $12.15M $10.25M
Total Long-Term Assets $4.927M $1.143M $1.148M
Total Assets $19.25M $13.30M $11.39M
YoY Change 115.6% 122.21% 223.66%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $1.550M $1.840M $1.630M
YoY Change -31.42% -11.96% -33.47%
Accrued Expenses $1.580M $770.0K $690.0K
YoY Change 192.59% -15.38% 4.55%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due $10.00K $30.00K $60.00K
YoY Change -97.14% -94.12% -90.63%
Total Short-Term Liabilities $6.983M $3.522M $3.267M
YoY Change 73.4% -19.74% -29.29%
LONG-TERM LIABILITIES
Long-Term Debt $10.00K $0.00 $0.00
YoY Change -100.0% -100.0%
Other Long-Term Liabilities $2.970M $570.0K $460.0K
YoY Change 5600.0% -4.17%
Total Long-Term Liabilities $2.980M $570.0K $460.0K
YoY Change 1325.0% -16.36%
TOTAL LIABILITIES
Total Short-Term Liabilities $6.983M $3.522M $3.267M
Total Long-Term Liabilities $2.980M $570.0K $460.0K
Total Liabilities $9.960M $4.144M $3.851M
YoY Change 147.33% -6.54% -24.34%
SHAREHOLDERS EQUITY
Retained Earnings $4.864M $4.519M $1.928M
YoY Change -301.74% -179.03%
Common Stock $8.191M $8.012M $7.914M
YoY Change 7.14% 8.9%
Preferred Stock
YoY Change
Treasury Stock (at cost) $3.675M $3.289M $2.211M
YoY Change 1412.35%
Treasury Stock Shares $1.019M 896.0K shares 561.6K shares
Shareholders Equity $9.380M $9.242M $7.631M
YoY Change
Total Liabilities & Shareholders Equity $19.25M $13.30M $11.39M
YoY Change 115.6% 122.21% 223.66%

Cashflow Statement

Concept 2018 Q4 2018 Q3 2018 Q2
OPERATING ACTIVITIES
Net Income $2.622M $2.591M $2.418M
YoY Change -20.74% 17.77% 60.77%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities $2.640M $3.130M $2.650M
YoY Change -25.0% 9.82% 41.71%
INVESTING ACTIVITIES
Capital Expenditures -$190.0K -$230.0K -$500.0K
YoY Change -416.67% 53.33%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities -$190.0K -$230.0K -$500.0K
YoY Change -416.67% 130.0% -5100.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -410.0K -1.090M -230.0K
YoY Change -31.67% 251.61% -89.55%
NET CHANGE
Cash From Operating Activities 2.640M 3.130M 2.650M
Cash From Investing Activities -190.0K -230.0K -500.0K
Cash From Financing Activities -410.0K -1.090M -230.0K
Net Change In Cash 2.040M 1.810M 1.920M
YoY Change -31.54% -25.82% -700.0%
FREE CASH FLOW
Cash From Operating Activities $2.640M $3.130M $2.650M
Capital Expenditures -$190.0K -$230.0K -$500.0K
Free Cash Flow $2.830M $3.360M $3.150M
YoY Change -18.21% 12.0%

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<div style="font-family: 'times new roman', 'serif';font-size: 10pt;margin-bottom: 0;margin-top: 0;"><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;"><div style="text-decoration:underline;display:inline;"><div style="font-weight:bold;display:inline;">Reclassifications</div></div></div></div><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; background: none;"><div style="white-space: pre-line; font-family: &quot;times new roman&quot;, serif; font-size: 10pt; color: rgb(0, 0, 0); background: none; text-decoration: none; letter-spacing: 0px; top: 0px;;display:inline;"><div style="font-weight:bold;display:inline;">&#160;</div></div></div><div style="font-family: 'times new roman', 'serif';font-size: 10pt;margin-bottom: 0;margin-top: 0;"><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;">Certain reclassifications have been made to the 2017 financial statements to conform to the consolidated 2018 financial statement presentation. These reclassifications had no effect on net earnings or cash flows as previously reported.</div></div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2018 us-gaap Use Of Estimates
UseOfEstimates
<div style="font-family: 'times new roman', 'serif';font-size: 10pt;margin-bottom: 0;margin-top: 0;"><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;"><div style="text-decoration:underline;display:inline;"><div style="font-weight:bold;display:inline;">Use of Estimates</div></div></div></div><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; background: none;"><div style="font-family: &quot;times new roman&quot;, serif; font-size: 10pt; color: rgb(0, 0, 0); background: none; text-decoration: none; letter-spacing: 0px; top: 0px;;display:inline;">&#160;</div></div><div style="color: rgb(0, 0, 0); font: 10pt 'times new roman', times, serif; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; margin: 0pt 0px;">Preparation of financial statements in conformity with 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 billing adjustments and uncollectible accounts receivable, the reserve for obsolete and damaged inventory, the life of its rented devices, stock-based compensation, and valuation of long-lived assets and realizability of deferred tax assets.</div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2017 zyxi Revenue From Deivces
RevenueFromDeivces
5020000
CY2018 us-gaap Advertising Expense
AdvertisingExpense
100000
CY2017 us-gaap Advertising Expense
AdvertisingExpense
100000
CY2018 zyxi Revenue From Deivces Relating To Purchased
RevenueFromDeivcesRelatingToPurchased
1950000
CY2017 zyxi Revenue From Deivces Relating To Purchased
RevenueFromDeivcesRelatingToPurchased
1643000
CY2018 zyxi Revenue From Deivces Relating To Leased
RevenueFromDeivcesRelatingToLeased
4872000
CY2017 zyxi Revenue From Deivces Relating To Leased
RevenueFromDeivcesRelatingToLeased
3377000
CY2018 zyxi Revenue From Deivces
RevenueFromDeivces
6822000
CY2018 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
200000
CY2017 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
100000
CY2018 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2018Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
2281000
CY2017Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
1202000
CY2018Q4 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
1317000
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P5Y2M19D
CY2018Q4 us-gaap Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
0.44
CY2018Q4 zyxi Sharebased Compensation Arrangement By Sharebased Payment Award Options Remain Issued Number
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsRemainIssuedNumber
700000
CY2018Q4 zyxi Sharebased Compensation Arrangement By Sharebased Payment Award Options Remain Outstanding Number
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsRemainOutstandingNumber
700000
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
1100000
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
100000
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
200000
CY2017 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
100000
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y3M
CY2017 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y3M
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
1.23
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
1.24
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0300
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0183
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0
CY2018 us-gaap Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
P6Y3M25D
CY2018Q4 us-gaap Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
0.80
CY2016Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
-3802000
CY2017 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
39000
CY2017 us-gaap Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition
AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition
66000
CY2017 us-gaap Adjustments To Additional Paid In Capital Warrant Issued
AdjustmentsToAdditionalPaidInCapitalWarrantIssued
228000
CY2017 us-gaap Stock Repurchased During Period Value
StockRepurchasedDuringPeriodValue
243000
CY2018 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
177000
CY2018 us-gaap Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition
AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition
370000
CY2018 us-gaap Stock Repurchased During Period Value
StockRepurchasedDuringPeriodValue
3432000
CY2018Q4 us-gaap Dividends Payable Amount Per Share
DividendsPayableAmountPerShare
0.07
CY2018 us-gaap Dividends Payable Date Of Record Day Month And Year
DividendsPayableDateOfRecordDayMonthAndYear
2019-01-02
CY2018 us-gaap Dividend Payable Date To Be Paid Day Month And Year
DividendPayableDateToBePaidDayMonthAndYear
2019-01-18
CY2017Q1 us-gaap Revenues
Revenues
3436000
CY2017Q2 us-gaap Revenues
Revenues
5042000
CY2017Q3 us-gaap Revenues
Revenues
6820000
CY2017Q4 us-gaap Revenues
Revenues
8134000
CY2017Q1 us-gaap Costs And Expenses
CostsAndExpenses
2953000
CY2017Q2 us-gaap Costs And Expenses
CostsAndExpenses
3108000
CY2017Q3 us-gaap Costs And Expenses
CostsAndExpenses
3885000
CY2017Q4 us-gaap Costs And Expenses
CostsAndExpenses
4542000
CY2017Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
483000
CY2017Q2 us-gaap Operating Income Loss
OperatingIncomeLoss
1934000
CY2017Q3 us-gaap Operating Income Loss
OperatingIncomeLoss
2935000
CY2017Q4 us-gaap Operating Income Loss
OperatingIncomeLoss
3592000
CY2017Q1 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
362000
CY2017Q2 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
1540000
CY2017Q3 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
2244000
CY2017Q4 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
3348000
CY2017Q1 us-gaap Net Income Loss
NetIncomeLoss
353000
CY2017Q2 us-gaap Net Income Loss
NetIncomeLoss
1504000
CY2017Q3 us-gaap Net Income Loss
NetIncomeLoss
2200000
CY2017Q4 us-gaap Net Income Loss
NetIncomeLoss
3308000
CY2017Q1 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.01
CY2017Q2 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.05
CY2017Q3 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.07
CY2017Q4 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.10
CY2017Q1 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.01
CY2017Q2 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.05
CY2017Q3 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.07
CY2017Q4 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.10
CY2018Q1 us-gaap Revenues
Revenues
6876000
CY2018Q2 us-gaap Revenues
Revenues
7573000
CY2018Q3 us-gaap Revenues
Revenues
8131000
CY2018Q4 us-gaap Revenues
Revenues
9337000
CY2018Q1 us-gaap Costs And Expenses
CostsAndExpenses
4921000
CY2018Q2 us-gaap Costs And Expenses
CostsAndExpenses
4858000
CY2018Q3 us-gaap Costs And Expenses
CostsAndExpenses
5311000
CY2018Q4 us-gaap Costs And Expenses
CostsAndExpenses
6457000
CY2018Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
1955000
CY2018Q2 us-gaap Operating Income Loss
OperatingIncomeLoss
2715000
CY2018Q3 us-gaap Operating Income Loss
OperatingIncomeLoss
2820000
CY2018Q4 us-gaap Operating Income Loss
OperatingIncomeLoss
2880000
CY2018Q1 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
1840000
CY2018Q2 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
2678000
CY2018Q3 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
2819000
CY2018Q4 us-gaap Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net
IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet
2880000
CY2018Q1 us-gaap Net Income Loss
NetIncomeLoss
1921000
CY2018Q2 us-gaap Net Income Loss
NetIncomeLoss
2418000
CY2018Q3 us-gaap Net Income Loss
NetIncomeLoss
2591000
CY2018Q4 us-gaap Net Income Loss
NetIncomeLoss
2622000
CY2018Q1 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.06
CY2018Q2 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.07
CY2018Q3 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.08
CY2018Q4 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.08
CY2018Q1 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.06
CY2018Q2 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.07
CY2018Q3 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.07
CY2018Q4 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.08
CY2018 zyxi Related Party Compensation
RelatedPartyCompensation
200000
CY2017 zyxi Related Party Compensation
RelatedPartyCompensation
200000
CY2018Q1 us-gaap Stock Repurchase Program Authorized Amount1
StockRepurchaseProgramAuthorizedAmount1
2000000
CY2017Q4 zyxi Common Stock Warrants Issued For Professional Services
CommonStockWarrantsIssuedForProfessionalServices
150000
CY2018 zyxi Defined Contribution Plan Eligibility Age
DefinedContributionPlanEligibilityAge
P18Y
CY2018 zyxi Defined Contribution Plan Period Of Employment For Eligibility
DefinedContributionPlanPeriodOfEmploymentForEligibility
P3M
CY2018 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
10237000
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
7511000
CY2018 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-21000
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-17000
CY2018 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
10216000
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
7494000
CY2017 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
119000
CY2018 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
309000
CY2017 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
10000
CY2018 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
1389000
CY2017 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
129000
CY2018 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
-462000
CY2017 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
0
CY2018 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
-263000
CY2017 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
0
CY2017 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.34
CY2018 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.04
CY2017 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.03
CY2018 zyxi Effective Income Tax Rate Reconciliation Permanent Differences And Other Adjustments
EffectiveIncomeTaxRateReconciliationPermanentDifferencesAndOtherAdjustments
0.01
CY2017 zyxi Effective Income Tax Rate Reconciliation Permanent Differences And Other Adjustments
EffectiveIncomeTaxRateReconciliationPermanentDifferencesAndOtherAdjustments
0
CY2018 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.16
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.54
CY2018 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
0
CY2017 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
0.07
CY2018 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0.12
CY2018 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.07
CY2017 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.02
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
37000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
25000
CY2018Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
217000
CY2017Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
217000
CY2018Q4 zyxi Deferred Tax Assets Accounts Receivable
DeferredTaxAssetsAccountsReceivable
18000
CY2017Q4 zyxi Deferred Tax Assets Accounts Receivable
DeferredTaxAssetsAccountsReceivable
19000
CY2018Q4 us-gaap Deferred Tax Assets Inventory
DeferredTaxAssetsInventory
117000
CY2017Q4 us-gaap Deferred Tax Assets Inventory
DeferredTaxAssetsInventory
92000
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
138000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
137000
CY2018Q4 zyxi Deferred Tax Assets Tax Credit And Operating Loss Carry Forwards Current
DeferredTaxAssetsTaxCreditAndOperatingLossCarryForwardsCurrent
354000
CY2017Q4 zyxi Deferred Tax Assets Tax Credit And Operating Loss Carry Forwards Current
DeferredTaxAssetsTaxCreditAndOperatingLossCarryForwardsCurrent
1141000
CY2018Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
150000
CY2017Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
6000
CY2018Q4 us-gaap Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
0
CY2017Q4 us-gaap Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
35000
CY2018Q4 zyxi Deferred Tax Assets Good Will And Intangible Assets Non Current
DeferredTaxAssetsGoodWillAndIntangibleAssetsNonCurrent
57000
CY2017Q4 zyxi Deferred Tax Assets Good Will And Intangible Assets Non Current
DeferredTaxAssetsGoodWillAndIntangibleAssetsNonCurrent
64000
CY2018Q4 zyxi Deferred Tax Assets Liabilities Gross Non Current
DeferredTaxAssetsLiabilitiesGrossNonCurrent
1088000
CY2017Q4 zyxi Deferred Tax Assets Liabilities Gross Non Current
DeferredTaxAssetsLiabilitiesGrossNonCurrent
1736000
CY2018Q4 us-gaap Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
172000
CY2017Q4 us-gaap Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
1727000
CY2018Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
176000
CY2017Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
0
CY2018Q4 us-gaap Deferred Tax Liabilities Prepaid Expenses
DeferredTaxLiabilitiesPrepaidExpenses
15000
CY2017Q4 us-gaap Deferred Tax Liabilities Prepaid Expenses
DeferredTaxLiabilitiesPrepaidExpenses
9000
CY2017Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
1800000
CY2018 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
370000
CY2017 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
294000
CY2018 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P2Y9M18D
CY2018Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
4000000
CY2017Q4 us-gaap Lines Of Credit Current
LinesOfCreditCurrent
0
CY2016Q4 us-gaap Lines Of Credit Current
LinesOfCreditCurrent
2800000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
836000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
876000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
914000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
956000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
495000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
0
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
4077000
CY2016Q1 us-gaap Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights
ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
50000
CY2016 zyxi Class Of Stock Warrants Or Rights Warrants Issuance Cost
ClassOfStockWarrantsOrRightsWarrantsIssuanceCost
15000
CY2018 us-gaap Line Of Credit Facility Expiration Date1
LineOfCreditFacilityExpirationDate1
2014-12-19
CY2018 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
900000
CY2017 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
500000
CY2018Q4 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
1885000
CY2018Q4 us-gaap Deferred Rent Credit Current
DeferredRentCreditCurrent
57000
CY2018Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
688000
CY2017Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
0
CY2018Q4 us-gaap Dividends Payable Current
DividendsPayableCurrent
2270000
CY2017Q4 us-gaap Dividends Payable Current
DividendsPayableCurrent
0
CY2017 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
1249000
CY2018 us-gaap Dividends Common Stock
DividendsCommonStock
2270000
CY2018Q4 us-gaap Deferred Tax Assets Liabilities Net Noncurrent
DeferredTaxAssetsLiabilitiesNetNoncurrent
725000
CY2017Q4 us-gaap Deferred Tax Assets Liabilities Net Noncurrent
DeferredTaxAssetsLiabilitiesNetNoncurrent
0
CY2018Q2 zyxi Rate Per Square Feet
RatePerSquareFeet
26.50
CY2017Q4 us-gaap Tenant Improvements
TenantImprovements
200000
CY2018Q4 us-gaap Deferred Rent Credit
DeferredRentCredit
600000
CY2018Q4 us-gaap Tax Credit Carryforward Amount
TaxCreditCarryforwardAmount
200000
CY2018 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
-0.03
CY2018 us-gaap Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
400000
CY2017 us-gaap Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
0
CY2012 us-gaap Defined Contribution Plan Employer Matching Contribution Percent Of Match
DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
0.35
CY2018Q3 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
4500
CY2018 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
-3000
CY2017 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
0
CY2018 zyxi Cash Received For Leasehold Improvements
CashReceivedForLeaseholdImprovements
214000
CY2018 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
-725000
CY2017 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
0
CY2018 us-gaap Interest Expense Other
InterestExpenseOther
0
CY2017 us-gaap Interest Expense Other
InterestExpenseOther
739000
CY2018 us-gaap Increase Decrease In Deposits
IncreaseDecreaseInDeposits
55000
CY2017 us-gaap Increase Decrease In Deposits
IncreaseDecreaseInDeposits
-315000
CY2018 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
370000
CY2017 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
-193000
CY2018 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
-54000
CY2017 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
0
CY2018 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
554000
CY2017 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
40000
CY2018 zyxi Increase Decrease In Other Long Term Obligations
IncreaseDecreaseInOtherLongTermObligations
375000
CY2017 zyxi Increase Decrease In Other Long Term Obligations
IncreaseDecreaseInOtherLongTermObligations
0
CY2018 us-gaap Income Taxes Paid
IncomeTaxesPaid
772000
CY2017 us-gaap Income Taxes Paid
IncomeTaxesPaid
0
CY2018 us-gaap Dividends Common Stock
DividendsCommonStock
2270000
CY2017 us-gaap Dividends Common Stock
DividendsCommonStock
0
CY2017Q4 us-gaap Land Subject To Ground Leases
LandSubjectToGroundLeases
41715
CY2018 zyxi Treasury Stock Purchased Not Settled No Payment
TreasuryStockPurchasedNotSettledNoPayment
0
CY2017 zyxi Treasury Stock Purchased Not Settled No Payment
TreasuryStockPurchasedNotSettledNoPayment
21000
CY2017Q4 zyxi Lessee Operating Sublease Rent Description
LesseeOperatingSubleaseRentDescription
first year of the sublease, the rent per square foot is $7.50, increasing to $19.75 during the second year of the sublease and each year thereafter for the initial term increasing by an additional $1 per square foot.
CY2018Q2 us-gaap Land Subject To Ground Leases
LandSubjectToGroundLeases
12494
CY2018Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
916000
CY2017Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
9000
CY2018Q4 us-gaap Deferred Tax Liabilities
DeferredTaxLiabilities
191000
CY2017Q4 us-gaap Deferred Tax Liabilities
DeferredTaxLiabilities
9000
CY2018Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
725000
CY2017Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
0
CY2018 zyxi Gain Loss On Disposal Of Product Inventory
GainLossOnDisposalOfProductInventory
0
CY2017 zyxi Gain Loss On Disposal Of Product Inventory
GainLossOnDisposalOfProductInventory
-227000
CY2018Q4 zyxi Net Income Loss Carry Forward For Income Tax Purpose
NetIncomeLossCarryForwardForIncomeTaxPurpose
2700000
CY2018 us-gaap Dividends Payable Date Declared Day Month And Year
DividendsPayableDateDeclaredDayMonthAndYear
2018-11-06
CY2018 us-gaap Stock Repurchased During Period Shares
StockRepurchasedDuringPeriodShares
932383
CY2018 us-gaap Treasury Stock Acquired Average Cost Per Share
TreasuryStockAcquiredAverageCostPerShare
3.68
CY2016Q1 us-gaap Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
880000
CY2017Q4 us-gaap Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
880000
CY2018 zyxi Tax Credit Carryforward Maximum Period
TaxCreditCarryforwardMaximumPeriod
2021
CY2018 dei Document Type
DocumentType
10-K
CY2018 dei Amendment Flag
AmendmentFlag
false
CY2018 dei Document Period End Date
DocumentPeriodEndDate
2018-12-31
CY2018 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2018
CY2018 dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
FY
CY2018 dei Entity Registrant Name
EntityRegistrantName
ZYNEX INC
CY2018 dei Entity Central Index Key
EntityCentralIndexKey
0000846475
CY2018 dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
CY2018 dei Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
No
CY2018 dei Entity Voluntary Filers
EntityVoluntaryFilers
No
CY2018 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2018 dei Entity Filer Category
EntityFilerCategory
Non-accelerated Filer
CY2018Q2 dei Entity Public Float
EntityPublicFloat
47400000
CY2018 dei Trading Symbol
TradingSymbol
ZYXI
CY2019Q1 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
32238024
CY2018 dei Entity Shell Company
EntityShellCompany
false
CY2018 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
false
CY2018 dei Entity Small Business
EntitySmallBusiness
true
CY2018 us-gaap Income Tax Credits And Adjustments
IncomeTaxCreditsAndAdjustments
200000
CY2018Q4 us-gaap Capital Leases Balance Sheet Assets By Major Class Net
CapitalLeasesBalanceSheetAssetsByMajorClassNet
20000
CY2017Q4 us-gaap Capital Leases Balance Sheet Assets By Major Class Net
CapitalLeasesBalanceSheetAssetsByMajorClassNet
82000
CY2018Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2018Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2017Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2017Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2018Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2018Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
100000000
CY2017Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2017Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
100000000
CY2018Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2017Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2018Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2017Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2018Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
33290587
CY2018Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
32271367
CY2017Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
32864877
CY2017Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
32778040
CY2018Q4 us-gaap Treasury Stock Shares
TreasuryStockShares
1019220
CY2017Q4 us-gaap Treasury Stock Shares
TreasuryStockShares
86837
CY2012 zyxi Defined Contribution Plan Description Of Employer Matching Contribution
DefinedContributionPlanDescriptionOfEmployerMatchingContribution
The Company has a discretionary employee match program and currently matches 35% of first 6% of an employee's contributions.
CY2017 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
0

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