2015 Q4 Form 10-K Financial Statement

#000117184316008541 Filed on March 14, 2016

View on sec.gov

Income Statement

Concept 2015 Q4 2015 Q3 2015 Q2
Revenue
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $2.610M $2.000M $1.890M
YoY Change 86.43% 92.31% 107.69%
% of Gross Profit
Research & Development $3.580M $3.078M $3.090M
YoY Change 91.44% 73.6% 93.61%
% of Gross Profit
Depreciation & Amortization $30.00K $10.00K $10.00K
YoY Change 200.0% 0.0%
% of Gross Profit
Operating Expenses $6.187M $5.082M $4.981M
YoY Change 89.03% 80.6% 98.6%
Operating Profit -$5.082M -$4.981M
YoY Change -3892.54% 98.6%
Interest Expense $30.00K
YoY Change 200.0%
% of Operating Profit
Other Income/Expense, Net -$190.0K -$301.0K -$91.00K
YoY Change -101.81% -94.34% 65.45%
Pretax Income -$6.340M -$5.380M -$5.070M
YoY Change -187.69% 3.86% 98.05%
Income Tax $0.00 $0.00
% Of Pretax Income
Net Earnings -$6.340M -$5.383M -$5.072M
YoY Change -187.65% 3.9% 97.89%
Net Earnings / Revenue
Basic Earnings Per Share
Diluted Earnings Per Share -$15.46M -$13.12M -$12.37M
COMMON SHARES
Basic Shares Outstanding 16.46M
Diluted Shares Outstanding

Balance Sheet

Concept 2015 Q4 2015 Q3 2015 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments $65.30M $70.50M $74.70M
YoY Change -21.89% 224.88% 192.94%
Cash & Equivalents $40.03M $35.98M $16.82M
Short-Term Investments $25.20M $34.60M $57.90M
Other Short-Term Assets $1.300M $800.0K $1.100M
YoY Change 30.0% 300.0% 175.0%
Inventory
Prepaid Expenses $829.0K $1.052M
Receivables
Other Receivables
Total Short-Term Assets $66.61M $71.38M $75.79M
YoY Change -21.27% 225.92% 192.62%
LONG-TERM ASSETS
Property, Plant & Equipment $224.0K $221.0K $102.0K
YoY Change 169.88% 121.0% 2.0%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $706.0K $686.0K $685.0K
YoY Change 519.3% -68.82% -42.92%
Total Long-Term Assets $930.0K $907.0K $787.0K
YoY Change 372.08% -60.57% -34.42%
TOTAL ASSETS
Total Short-Term Assets $66.61M $71.38M $75.79M
Total Long-Term Assets $930.0K $907.0K $787.0K
Total Assets $67.54M $72.28M $76.58M
YoY Change -20.35% 198.69% 182.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $1.020M $591.0K $502.0K
YoY Change 11.23% -40.9% -49.8%
Accrued Expenses $2.576M $2.235M $2.202M
YoY Change 81.28% 39.69% 10.1%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $4.133M $3.168M $2.765M
YoY Change 76.78% 17.33% -53.14%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00 $0.00
YoY Change
Other Long-Term Liabilities $84.00K $51.00K
YoY Change -99.29% -99.23%
Total Long-Term Liabilities $0.00 $84.00K $51.00K
YoY Change -99.29% -99.23%
TOTAL LIABILITIES
Total Short-Term Liabilities $4.133M $3.168M $2.765M
Total Long-Term Liabilities $0.00 $84.00K $51.00K
Total Liabilities $4.133M $3.252M $2.816M
YoY Change 76.78% -77.73% -77.47%
SHAREHOLDERS EQUITY
Retained Earnings -$131.3M -$124.9M -$119.5M
YoY Change 19.46%
Common Stock $16.00K $16.00K $16.00K
YoY Change 0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $63.41M $69.03M $73.76M
YoY Change
Total Liabilities & Shareholders Equity $67.54M $72.28M $76.58M
YoY Change -20.35% 198.69% 182.56%

Cashflow Statement

Concept 2015 Q4 2015 Q3 2015 Q2
OPERATING ACTIVITIES
Net Income -$6.340M -$5.383M -$5.072M
YoY Change -187.65% 3.9% 97.89%
Depreciation, Depletion And Amortization $30.00K $10.00K $10.00K
YoY Change 200.0% 0.0%
Cash From Operating Activities -$5.190M -$3.910M -$4.600M
YoY Change 153.17% 5.39% 72.28%
INVESTING ACTIVITIES
Capital Expenditures -$30.00K -$130.0K -$30.00K
YoY Change 1200.0% -25.0%
Acquisitions
YoY Change
Other Investing Activities $9.250M $23.19M $11.61M
YoY Change 150.68% -1480.36% -169.11%
Cash From Investing Activities $9.220M $23.06M $11.57M
YoY Change 150.54% -1472.62% -168.71%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 60.00K 40.00K 60.00K
YoY Change -99.91% -500.0% -99.76%
NET CHANGE
Cash From Operating Activities -5.190M -3.910M -4.600M
Cash From Investing Activities 9.220M 23.06M 11.57M
Cash From Financing Activities 60.00K 40.00K 60.00K
Net Change In Cash 4.090M 19.19M 7.030M
YoY Change -93.77% -455.37% 39.21%
FREE CASH FLOW
Cash From Operating Activities -$5.190M -$3.910M -$4.600M
Capital Expenditures -$30.00K -$130.0K -$30.00K
Free Cash Flow -$5.160M -$3.780M -$4.570M
YoY Change 151.71% 2.16% 73.76%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2015 prto Accretion Of Redeemable Convertible Preferred Stock To Redemption Value
AccretionOfRedeemableConvertiblePreferredStockToRedemptionValue
CY2014 prto Accretion Of Redeemable Convertible Preferred Stock To Redemption Value
AccretionOfRedeemableConvertiblePreferredStockToRedemptionValue
6353000
CY2013 prto Accretion Of Redeemable Convertible Preferred Stock To Redemption Value
AccretionOfRedeemableConvertiblePreferredStockToRedemptionValue
6119000
CY2014 prto Adjustment To Additional Paid In Capital Exercise Of Investors Rights And Obligations
AdjustmentToAdditionalPaidInCapitalExerciseOfInvestorsRightsAndObligations
1408000
CY2015 prto Change In Fair Value Of Investor Rights And Obligation
ChangeInFairValueOfInvestorRightsAndObligation
CY2014 prto Change In Fair Value Of Investor Rights And Obligation
ChangeInFairValueOfInvestorRightsAndObligation
5151000
CY2013 prto Change In Fair Value Of Investor Rights And Obligation
ChangeInFairValueOfInvestorRightsAndObligation
CY2015 prto Fair Value Of Embedded Derivative Contained Within Convertible Notes Payable
FairValueOfEmbeddedDerivativeContainedWithinConvertibleNotesPayable
CY2014 prto Fair Value Of Embedded Derivative Contained Within Convertible Notes Payable
FairValueOfEmbeddedDerivativeContainedWithinConvertibleNotesPayable
CY2013 prto Fair Value Of Embedded Derivative Contained Within Convertible Notes Payable
FairValueOfEmbeddedDerivativeContainedWithinConvertibleNotesPayable
1445000
CY2015 prto Fair Value Of Investors Rights Obligations Reclassified To Equity Upon Ipo
FairValueOfInvestorsRightsObligationsReclassifiedToEquityUponIPO
CY2014 prto Fair Value Of Investors Rights Obligations Reclassified To Equity Upon Ipo
FairValueOfInvestorsRightsObligationsReclassifiedToEquityUponIPO
1408000
CY2013 prto Fair Value Of Investors Rights Obligations Reclassified To Equity Upon Ipo
FairValueOfInvestorsRightsObligationsReclassifiedToEquityUponIPO
CY2013Q4 prto Fixed Asset Net Book Value Disposal
FixedAssetNetBookValueDisposal
0
CY2015 prto Foreign Currency Remeasurement Gain Loss
ForeignCurrencyRemeasurementGainLoss
-75000
CY2014 prto Foreign Currency Remeasurement Gain Loss
ForeignCurrencyRemeasurementGainLoss
CY2013 prto Foreign Currency Remeasurement Gain Loss
ForeignCurrencyRemeasurementGainLoss
CY2015 prto Income Tax Rate Reconciliation Mark To Market Derivative Liability
IncomeTaxRateReconciliationMarkToMarketDerivativeLiability
CY2014 prto Income Tax Rate Reconciliation Mark To Market Derivative Liability
IncomeTaxRateReconciliationMarkToMarketDerivativeLiability
-1779000
CY2013 prto Income Tax Rate Reconciliation Mark To Market Derivative Liability
IncomeTaxRateReconciliationMarkToMarketDerivativeLiability
CY2015 prto Income Tax Reconciliation State Income Taxes Net Of Federal Benefit
IncomeTaxReconciliationStateIncomeTaxesNetOfFederalBenefit
-808000
CY2014 prto Income Tax Reconciliation State Income Taxes Net Of Federal Benefit
IncomeTaxReconciliationStateIncomeTaxesNetOfFederalBenefit
-303000
CY2013 prto Income Tax Reconciliation State Income Taxes Net Of Federal Benefit
IncomeTaxReconciliationStateIncomeTaxesNetOfFederalBenefit
-389000
CY2015Q4 prto Maximum Value Of Stock Offered For Sale
MaximumValueOfStockOfferedForSale
40000000
CY2015 prto Number Of Voting Rights For Each Common Stock Held
NumberOfVotingRightsForEachCommonStockHeld
1
CY2015Q4 prto Operating Loss Carryforwards Attributable To Excess Stock Option Deductions
OperatingLossCarryforwardsAttributableToExcessStockOptionDeductions
400000
CY2015 prto Proceeds From Issuance Of Common Stock Under Espp
ProceedsFromIssuanceOfCommonStockUnderESPP
75000
CY2014 prto Proceeds From Issuance Of Common Stock Under Espp
ProceedsFromIssuanceOfCommonStockUnderESPP
CY2013 prto Proceeds From Issuance Of Common Stock Under Espp
ProceedsFromIssuanceOfCommonStockUnderESPP
CY2002Q1 prto Royalty Payment Percentage Of Net Sales
RoyaltyPaymentPercentageOfNetSales
0.025
CY2014Q4 prto Stock Issued During Period Shares Warrants Exercised
StockIssuedDuringPeriodSharesWarrantsExercised
498889
CY2015Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
1020000
CY2014Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
917000
CY2015 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
-651000
CY2014 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
-30000
CY2013 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions
19000
CY2014 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions
59000
CY2013 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
-30000
CY2015Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
2576000
CY2014Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
1421000
CY2015Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
478000
CY2014Q4 us-gaap Accrued Professional Fees Current
AccruedProfessionalFeesCurrent
286000
CY2015Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
441000
CY2014Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
384000
CY2015Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-11000
CY2014Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-6000
CY2015Q4 us-gaap Additional Paid In Capital
AdditionalPaidInCapital
194651000
CY2014Q4 us-gaap Additional Paid In Capital
AdditionalPaidInCapital
192324000
CY2014 us-gaap Adjustments To Additional Paid In Capital Other
AdjustmentsToAdditionalPaidInCapitalOther
1428000
CY2015 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions
88000
CY2013 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
155000
CY2014 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
459000
CY2015 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
2164000
CY2015 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
2164000
CY2014 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
459000
CY2013 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
155000
CY2015 us-gaap Amortization Of Debt Discount Premium
AmortizationOfDebtDiscountPremium
CY2014 us-gaap Amortization Of Debt Discount Premium
AmortizationOfDebtDiscountPremium
742000
CY2013 us-gaap Amortization Of Debt Discount Premium
AmortizationOfDebtDiscountPremium
749000
CY2015 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
2200000
CY2014 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
9720000
CY2013 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
5764000
CY2014Q3 us-gaap Area Of Real Estate Property
AreaOfRealEstateProperty
5000
CY2015Q4 us-gaap Assets
Assets
67538000
CY2014Q4 us-gaap Assets
Assets
84798000
CY2015Q4 us-gaap Assets Current
AssetsCurrent
66608000
CY2014Q4 us-gaap Assets Current
AssetsCurrent
84601000
CY2015Q4 us-gaap Assets Fair Value Disclosure
AssetsFairValueDisclosure
64465000
CY2014Q4 us-gaap Assets Fair Value Disclosure
AssetsFairValueDisclosure
83585000
CY2015Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
25243000
CY2014Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
14761000
CY2015Q4 us-gaap Available For Sale Securities
AvailableForSaleSecurities
25232000
CY2014Q4 us-gaap Available For Sale Securities
AvailableForSaleSecurities
14755000
CY2015Q4 us-gaap Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
1000
CY2014Q4 us-gaap Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
CY2015Q4 us-gaap Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
12000
CY2014Q4 us-gaap Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
6000
CY2015Q4 us-gaap Available For Sale Securities Current
AvailableForSaleSecuritiesCurrent
25232000
CY2014Q4 us-gaap Available For Sale Securities Current
AvailableForSaleSecuritiesCurrent
14755000
CY2015 us-gaap Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
0
CY2014 us-gaap Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
0
CY2013 us-gaap Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
0
CY2012Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
2409000
CY2015 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
-28809000
CY2015Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
40031000
CY2014Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
68840000
CY2013Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
2793000
CY2014 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
66047000
CY2013 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
384000
CY2015Q4 us-gaap Cash Cash Equivalents And Short Term Investments
CashCashEquivalentsAndShortTermInvestments
65300000
CY2015Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2014Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2015Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
2717260
CY2014Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
1947849
CY2015Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2014Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2014Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2015Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
100000000
CY2014Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
100000000
CY2015Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
16501500
CY2014Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
16448455
CY2015Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
16501500
CY2014Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
16448455
CY2015Q4 us-gaap Common Stock Value
CommonStockValue
16000
CY2014Q4 us-gaap Common Stock Value
CommonStockValue
16000
CY2015 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-21382000
CY2014 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-3348000
CY2013 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-7913000
CY2015 us-gaap Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-size: 10pt; text-align: justify; margin: 0"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-style: italic;">Concentrations of Credit Risk and Off-Balance Sheet Risk</div></div></div><div style=" font-size: 10pt; text-align: justify; margin: 0">&nbsp;</div><div style=" font-size: 10pt; text-align: justify; text-indent: 0.25in; margin: 0">Financial instruments that potentially subject the Company to concentrations of credit risk are primarily cash, cash equivalents and short-term investments. The Company's cash and cash equivalents are held in accounts with financial institutions that management believes are creditworthy. The Company's investment policy includes guidelines on the quality of the institutions and financial instruments and defines allowable investments that the Company believes minimizes the exposure to concentration of credit risk. These amounts at times may exceed federally insured limits. The Company has not experienced any credit losses in such accounts and does not believe it is exposed to any significant credit risk on these funds. The Company has no financial instruments with off-balance sheet risk of loss.</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
CY2015 us-gaap Debt Conversion Converted Instrument Amount1
DebtConversionConvertedInstrumentAmount1
CY2014 us-gaap Debt Conversion Converted Instrument Amount1
DebtConversionConvertedInstrumentAmount1
126836000
CY2013 us-gaap Debt Conversion Converted Instrument Amount1
DebtConversionConvertedInstrumentAmount1
CY2015 us-gaap Debt Conversion Original Debt Amount1
DebtConversionOriginalDebtAmount1
CY2014 us-gaap Debt Conversion Original Debt Amount1
DebtConversionOriginalDebtAmount1
6089000
CY2013 us-gaap Debt Conversion Original Debt Amount1
DebtConversionOriginalDebtAmount1
CY2015Q4 us-gaap Deferred Finance Costs Gross
DeferredFinanceCostsGross
100000
CY2015Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
CY2014Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
CY2013Q4 us-gaap Deferred Tax Assets Deferred Income
DeferredTaxAssetsDeferredIncome
1147000
CY2015Q4 us-gaap Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
443000
CY2014Q4 us-gaap Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
531000
CY2013Q4 us-gaap Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
612000
CY2015Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
52234000
CY2014Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
42452000
CY2013Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
38636000
CY2015Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
0
CY2014Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
0
CY2013Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
0
CY2015Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
34488000
CY2014Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
29217000
CY2013Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
26304000
CY2015Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
276000
CY2014Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
8000
CY2013Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
300000
CY2015Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
16404000
CY2014Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
12126000
CY2013Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
9941000
CY2015Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
596000
CY2014Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
92000
CY2013Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
CY2015Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
27000
CY2014Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
478000
CY2013Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
332000
CY2015Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
52234000
CY2014Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
42452000
CY2013Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
38636000
CY2015 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
57000
CY2014 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
30000
CY2013 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
27000
CY2015Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
1058000
CY2014Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
641000
CY2015 us-gaap Dividends Common Stock
DividendsCommonStock
0
CY2015 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-1.30
CY2014 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-3.16
CY2013 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-59.66
CY2015Q1 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-0.28
CY2015Q2 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-0.31
CY2015Q3 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-0.33
CY2015Q4 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-0.38
CY2015 us-gaap Effect Of Exchange Rate On Cash And Cash Equivalents
EffectOfExchangeRateOnCashAndCashEquivalents
-75000
CY2014 us-gaap Effect Of Exchange Rate On Cash And Cash Equivalents
EffectOfExchangeRateOnCashAndCashEquivalents
CY2013 us-gaap Effect Of Exchange Rate On Cash And Cash Equivalents
EffectOfExchangeRateOnCashAndCashEquivalents
CY2015 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P3Y
CY2015Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
9600000
CY2015 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
CY2015 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
-589000
CY2014 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
CY2013 us-gaap Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
CY2015 us-gaap Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
-52000
CY2014 us-gaap Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
CY2013 us-gaap Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
CY2015 us-gaap Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
-537000
CY2014 us-gaap Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
CY2013 us-gaap Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
CY2014 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
CY2013 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
65000
CY2013 us-gaap Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
100000
CY2015 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
8489000
CY2014 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
4096000
CY2013 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
3128000
CY2014Q1 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-18.09
CY2014Q2 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-18.55
CY2014Q3 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-31
CY2014Q4 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
0.52
CY2014Q1 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-18.09
CY2014Q2 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-18.55
CY2014Q3 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-31
CY2014Q4 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
0.48
CY2015 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
9782000
CY2014 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
4394000
CY2013 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
7286000
CY2015 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-7315000
CY2014 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-1136000
CY2013 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-2690000
CY2015 us-gaap Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
260000
CY2014 us-gaap Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
124000
CY2013 us-gaap Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
299000
CY2015 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
990000
CY2014 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
-110000
CY2013 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
92000
CY2015 us-gaap Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
CY2014 us-gaap Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
312000
CY2013 us-gaap Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
2566000
CY2015 us-gaap Income Tax Reconciliation Tax Credits
IncomeTaxReconciliationTaxCredits
4219000
CY2014 us-gaap Income Tax Reconciliation Tax Credits
IncomeTaxReconciliationTaxCredits
2176000
CY2013 us-gaap Income Tax Reconciliation Tax Credits
IncomeTaxReconciliationTaxCredits
7164000
CY2015 us-gaap Income Tax Reconciliation Tax Credits Foreign
IncomeTaxReconciliationTaxCreditsForeign
-1310000
CY2014 us-gaap Income Tax Reconciliation Tax Credits Foreign
IncomeTaxReconciliationTaxCreditsForeign
-674000
CY2013 us-gaap Income Tax Reconciliation Tax Credits Foreign
IncomeTaxReconciliationTaxCreditsForeign
CY2015 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
1258000
CY2014 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
955000
CY2013 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
177000
CY2015 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
CY2014 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
-2948000
CY2013 us-gaap Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
CY2015 us-gaap Increase Decrease In Derivative Liabilities
IncreaseDecreaseInDerivativeLiabilities
CY2014 us-gaap Increase Decrease In Derivative Liabilities
IncreaseDecreaseInDerivativeLiabilities
81000
CY2013 us-gaap Increase Decrease In Derivative Liabilities
IncreaseDecreaseInDerivativeLiabilities
-2000
CY2015 us-gaap Increase Decrease In Other Accrued Liabilities
IncreaseDecreaseInOtherAccruedLiabilities
CY2014 us-gaap Increase Decrease In Other Accrued Liabilities
IncreaseDecreaseInOtherAccruedLiabilities
115000
CY2013 us-gaap Increase Decrease In Other Accrued Liabilities
IncreaseDecreaseInOtherAccruedLiabilities
112000
CY2015 us-gaap Increase Decrease In Other Receivables
IncreaseDecreaseInOtherReceivables
32000
CY2014 us-gaap Increase Decrease In Other Receivables
IncreaseDecreaseInOtherReceivables
CY2013 us-gaap Increase Decrease In Other Receivables
IncreaseDecreaseInOtherReceivables
CY2015 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
899000
CY2014 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
961000
CY2013 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-72000
CY2015 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
CY2014 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-857000
CY2013 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-861000
CY2015 us-gaap Investment Income Net
InvestmentIncomeNet
144000
CY2014 us-gaap Investment Income Net
InvestmentIncomeNet
24000
CY2013 us-gaap Investment Income Net
InvestmentIncomeNet
4000
CY2015 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
200000
CY2014 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
200000
CY2013 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
200000
CY2015Q4 us-gaap Letters Of Credit Outstanding Amount
LettersOfCreditOutstandingAmount
14000
CY2014Q4 us-gaap Letters Of Credit Outstanding Amount
LettersOfCreditOutstandingAmount
38000
CY2015Q4 us-gaap Liabilities
Liabilities
4133000
CY2014Q4 us-gaap Liabilities
Liabilities
2338000
CY2015Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
67538000
CY2014Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
84798000
CY2015Q4 us-gaap Liabilities Current
LiabilitiesCurrent
4133000
CY2014Q4 us-gaap Liabilities Current
LiabilitiesCurrent
2338000
CY2015Q4 us-gaap Liabilities Fair Value Disclosure
LiabilitiesFairValueDisclosure
537000
CY2015Q4 us-gaap Liability For Uncertain Tax Positions Current
LiabilityForUncertainTaxPositionsCurrent
0
CY2014Q4 us-gaap Liability For Uncertain Tax Positions Current
LiabilityForUncertainTaxPositionsCurrent
0
CY2015Q4 us-gaap Loans Pledged As Collateral
LoansPledgedAsCollateral
14000
CY2014Q4 us-gaap Loans Pledged As Collateral
LoansPledgedAsCollateral
39000
CY2015 us-gaap Nature Of Operations
NatureOfOperations
<div style="display: inline; font-family: times new roman; font-size: 10pt"><table style="; font-size: 10pt; width: 700px;" cellpadding="0" cellspacing="0"> <tr style="vertical-align: top"> <td style="width: 20px; text-align: justify"><div style="display: inline; font-weight: bold;">1.</div></td> <td style="width: 7px">&nbsp;</td> <td style="text-align: justify"><div style="display: inline; font-weight: bold;">Organization and Operations</div></td> </tr> </table> <div style=" font-size: 10pt; text-align: justify; margin: 0.2pt 0 0; text-indent: 0.5in"><div style="display: inline; font-weight: bold;">&nbsp;</div></div> <div style=" font-size: 10pt; text-align: justify; margin: 0"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-style: italic;">The Company</div></div></div> <div style=" font-size: 10pt; text-align: justify; margin: 0.2pt 0 0; text-indent: 0.5in"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-style: italic;">&nbsp;</div></div></div> <div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">Proteon Therapeutics, Inc. (the &#x201c;Company&#x201d;) is a late-stage biopharmaceutical company focused on the development of novel, first-in-class pharmaceuticals to address the medical needs of patients with kidney and vascular disease. The Company was formed in June 2001 and incorporated on March 24, 2006. During 2013, the Company formed a wholly-owned subsidiary, organized in the United Kingdom, Proteon Therapeutics Limited. As of December 31, 2015, there has been no activity in this subsidiary other than its formation. During 2014, the Company formed a wholly-owned Massachusetts Securities Corporation subsidiary as a holding company for its available-for-sale investments, Proteon Securities Corp. The Company completed its initial public offering of its common stock, $0.001 par value per share (&#x201c;Common Stock&#x201d;) on October 27, 2014 (the &#x201c;IPO&#x201d;). Since inception, the Company has been primarily involved in research and development activities.</div> <div style=" font-size: 10pt; text-align: justify; margin: 0; text-indent: 0.5in">&nbsp;</div> <div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">The Company devotes substantially all of its efforts to product research and development, initial market development and raising capital. The Company has not generated any product revenue related to its primary business purpose to date and is subject to a number of risks similar to those of other development stage companies, including dependence on key individuals, competition from other companies, the need for development of commercially viable products and the need to obtain adequate additional financing to fund the development of its product candidates. The Company is also subject to a number of risks similar to other companies in the biotechnology industry, including regulatory approval of products, uncertainty of market acceptance of products, competition from substitute products and larger companies, the need to obtain additional financing, compliance with government regulations, protection of proprietary technology, dependence on third parties, product liability and dependence on key individuals.</div> <div style=" font-size: 10pt; text-align: justify; margin: 0; text-indent: 0.5in">&nbsp;</div> <div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">As of December 31, 2015, the Company had cash, cash equivalents and available-for-sale investments of $65.3 million. The Company believes that its existing cash, cash equivalents and available-for-sale investments will be sufficient to fund operations and capital expenditures into the fourth quarter of 2017. The Company had an accumulated deficit of $131.3 million as of December 31, 2015.&nbsp;</div></div>
CY2015 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
163000
CY2014 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
88520000
CY2013 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
4314000
CY2015 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
-11331000
CY2014 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
-12483000
CY2013 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
2727000
CY2015 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-17566000
CY2014 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-9990000
CY2013 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-6657000
CY2015 us-gaap Net Income Loss
NetIncomeLoss
-21377000
CY2014 us-gaap Net Income Loss
NetIncomeLoss
-3342000
CY2013 us-gaap Net Income Loss
NetIncomeLoss
-7912000
CY2014Q1 us-gaap Net Income Loss
NetIncomeLoss
-2831000
CY2014Q2 us-gaap Net Income Loss
NetIncomeLoss
-2563000
CY2014Q3 us-gaap Net Income Loss
NetIncomeLoss
-5181000
CY2014Q4 us-gaap Net Income Loss
NetIncomeLoss
7233000
CY2015 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-21377000
CY2014 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-9695000
CY2013 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-14031000
CY2015Q1 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-4580000
CY2015Q2 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-5072000
CY2015Q3 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-5383000
CY2015Q4 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-6342000
CY2014Q1 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-4343000
CY2014Q2 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-4460000
CY2014Q3 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-7458000
CY2014Q4 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
5938000
CY2014Q1 us-gaap Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
-4343000
CY2014Q2 us-gaap Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
-4460000
CY2014Q3 us-gaap Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
-7458000
CY2014Q4 us-gaap Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
5938000
CY2015Q4 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
537000
CY2014Q4 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
CY2015 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
-651000
CY2014 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
5071000
CY2013 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
67000
CY2015 us-gaap Other Than Temporary Impairment Losses Investments Availableforsale Securities
OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
0
CY2014 us-gaap Other Than Temporary Impairment Losses Investments Availableforsale Securities
OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
0
CY2015 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
-507000
CY2014 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
4238000
CY2013 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
-790000
CY2015 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2015 us-gaap Number Of Reportable Segments
NumberOfReportableSegments
1
CY2015 us-gaap Operating Expenses
OperatingExpenses
20870000
CY2014 us-gaap Operating Expenses
OperatingExpenses
10528000
CY2013 us-gaap Operating Expenses
OperatingExpenses
7122000
CY2015Q1 us-gaap Operating Expenses
OperatingExpenses
4620000
CY2015Q2 us-gaap Operating Expenses
OperatingExpenses
4981000
CY2015Q3 us-gaap Operating Expenses
OperatingExpenses
5082000
CY2015Q4 us-gaap Operating Expenses
OperatingExpenses
6187000
CY2014Q1 us-gaap Operating Expenses
OperatingExpenses
1933000
CY2014Q2 us-gaap Operating Expenses
OperatingExpenses
2508000
CY2014Q3 us-gaap Operating Expenses
OperatingExpenses
2814000
CY2014Q4 us-gaap Operating Expenses
OperatingExpenses
3273000
CY2015 us-gaap Operating Income Loss
OperatingIncomeLoss
-20870000
CY2014 us-gaap Operating Income Loss
OperatingIncomeLoss
-7580000
CY2013 us-gaap Operating Income Loss
OperatingIncomeLoss
-7122000
CY2015Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
420000
CY2015Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
168000
CY2015Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
84000
CY2015Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
168000
CY2015Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
1040000
CY2014Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
494000
CY2015Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
706000
CY2014Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
114000
CY2015 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-5000
CY2014 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-6000
CY2013 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-1000
CY2013 us-gaap Other Than Temporary Impairment Losses Investments Availableforsale Securities
OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
0
CY2015 us-gaap Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
CY2014 us-gaap Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
CY2013 us-gaap Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
46000
CY2015 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
CY2014Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
467000
CY2015Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
224000
CY2014Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
83000
CY2014 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
452000
CY2013 us-gaap Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
CY2015 us-gaap Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
88644000
CY2014 us-gaap Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
34950000
CY2013 us-gaap Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
3878000
CY2015 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
198000
CY2014 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
51000
CY2013 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
10000
CY2014Q4 us-gaap Preferred Stock Accretion Of Redemption Discount
PreferredStockAccretionOfRedemptionDiscount
1300000
CY2015Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2014Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2015Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2014Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2015Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2014Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2015Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2014Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2015Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2014Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2015Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
1345000
CY2014Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
1006000
CY2015 us-gaap Proceeds From Convertible Debt
ProceedsFromConvertibleDebt
CY2014 us-gaap Proceeds From Convertible Debt
ProceedsFromConvertibleDebt
CY2013 us-gaap Proceeds From Convertible Debt
ProceedsFromConvertibleDebt
4339000
CY2015 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
CY2014 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
62485000
CY2013 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
CY2015 us-gaap Proceeds From Issuance Of Redeemable Preferred Stock
ProceedsFromIssuanceOfRedeemablePreferredStock
CY2014 us-gaap Proceeds From Issuance Of Redeemable Preferred Stock
ProceedsFromIssuanceOfRedeemablePreferredStock
25000000
CY2013 us-gaap Proceeds From Issuance Of Redeemable Preferred Stock
ProceedsFromIssuanceOfRedeemablePreferredStock
CY2015 us-gaap Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
75505000
CY2014 us-gaap Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
22518000
CY2013 us-gaap Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
6550000
CY2015 us-gaap Proceeds From Sale Of Available For Sale Securities
ProceedsFromSaleOfAvailableForSaleSecurities
2006000
CY2014 us-gaap Proceeds From Sale Of Available For Sale Securities
ProceedsFromSaleOfAvailableForSaleSecurities
CY2013 us-gaap Proceeds From Sale Of Available For Sale Securities
ProceedsFromSaleOfAvailableForSaleSecurities
CY2015 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
CY2014 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
CY2013 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
65000
CY2015 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
88000
CY2014 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
59000
CY2013 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
21000
CY2015 us-gaap Proceeds From Warrant Exercises
ProceedsFromWarrantExercises
CY2014 us-gaap Proceeds From Warrant Exercises
ProceedsFromWarrantExercises
1428000
CY2013 us-gaap Proceeds From Warrant Exercises
ProceedsFromWarrantExercises
CY2013 us-gaap Property Plant And Equipment Disposals
PropertyPlantAndEquipmentDisposals
200000
CY2015Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
665000
CY2015 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
12381000
CY2014 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
6432000
CY2013 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
3994000
CY2015Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-131251000
CY2014Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-109874000
CY2014 us-gaap Revenues
Revenues
2948000
CY2015 us-gaap Revenues
Revenues
CY2013 us-gaap Revenues
Revenues
CY2015Q1 us-gaap Revenues
Revenues
CY2015Q2 us-gaap Revenues
Revenues
CY2015Q3 us-gaap Revenues
Revenues
CY2015Q4 us-gaap Revenues
Revenues
CY2014Q1 us-gaap Revenues
Revenues
CY2014Q2 us-gaap Revenues
Revenues
CY2014Q3 us-gaap Revenues
Revenues
2948000
CY2014Q4 us-gaap Revenues
Revenues
CY2015Q4 us-gaap Security Deposit
SecurityDeposit
14000
CY2015 us-gaap Share Based Compensation
ShareBasedCompensation
2164000
CY2014 us-gaap Share Based Compensation
ShareBasedCompensation
459000
CY2013 us-gaap Share Based Compensation
ShareBasedCompensation
155000
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0
CY2013 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0176
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0188
CY2013 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.0103
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
0.798
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
0.795
CY2013 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
0.911
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
812891
CY2015Q4 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
9755000
CY2015 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P5Y109D
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
3.53
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
500000
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
200000
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
1010256
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
1010256
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
659865
CY2013 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
3150
CY2015 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
9.34
CY2014 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
4.07
CY2013 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
16.50
CY2014Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
7709000
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
15705000
CY2014Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
1235526
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
2200369
CY2014Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
4.19
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
8.52
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
14926000
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
1991131
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
8.16
CY2015 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
1.96
CY2015 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
13.52
CY2015 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y40D
CY2014 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y
CY2013 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y346D
CY2014 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P7Y36D
CY2015 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P7Y292D
CY2015 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
P7Y219D
CY2015 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
45413
CY2014 us-gaap Stock Issued During Period Value Conversion Of Convertible Securities
StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
126836000
CY2015 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
75000
CY2014 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
62485000
CY2015Q4 us-gaap Stockholders Equity
StockholdersEquity
63405000
CY2014Q4 us-gaap Stockholders Equity
StockholdersEquity
82460000
CY2012Q4 us-gaap Stockholders Equity
StockholdersEquity
-86656000
CY2013Q4 us-gaap Stockholders Equity
StockholdersEquity
-100514000
CY2015Q4 us-gaap Tax Credit Carryforward Amount
TaxCreditCarryforwardAmount
16900000
CY2014Q4 us-gaap Tax Credit Carryforward Amount
TaxCreditCarryforwardAmount
12500000
CY2013Q4 us-gaap Tax Credit Carryforward Amount
TaxCreditCarryforwardAmount
10300000
CY2013 us-gaap Temporary Equity Accretion To Redemption Value
TemporaryEquityAccretionToRedemptionValue
-6119000
CY2014 us-gaap Temporary Equity Accretion To Redemption Value
TemporaryEquityAccretionToRedemptionValue
-6353000
CY2015 us-gaap Temporary Equity Accretion To Redemption Value Adjustment
TemporaryEquityAccretionToRedemptionValueAdjustment
CY2014 us-gaap Temporary Equity Accretion To Redemption Value Adjustment
TemporaryEquityAccretionToRedemptionValueAdjustment
6353000
CY2013 us-gaap Temporary Equity Accretion To Redemption Value Adjustment
TemporaryEquityAccretionToRedemptionValueAdjustment
6119000
CY2015Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2014Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2013Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
0
CY2015 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2014 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2013 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2015 us-gaap Use Of Estimates
UseOfEstimates
<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-size: 10pt; text-align: justify; margin: 0"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-style: italic;">Use of Estimates</div></div></div><div style=" font-size: 10pt; text-align: justify; margin: 0.2pt 0 0; text-indent: 0.5in"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-style: italic;">&nbsp;</div></div></div><div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company&#x2019;s management evaluates its estimates, which include, but are not limited to, estimates related to convertible notes, stock-based compensation expense, clinical trial accruals and reported amounts of revenues and expenses during the reported period. The Company bases its estimates on historical experience and other market-specific or other relevant assumptions that it believes to be reasonable under the circumstances. Actual results may differ from those estimates or assumptions.</div><div style=" font-size: 10pt; text-align: justify; margin: 0.05pt 0 0; text-indent: 0.5in">&nbsp;</div><div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">The Company historically utilized significant estimates and assumptions in determining the fair value of its Common Stock. The Company utilized various valuation methodologies in accordance with the framework of the 2004 and 2013 American Institute of Certified Public Accountants Technical Practice Aids, <div style="display: inline; font-style: italic;">Valuation of Privately-Held Company Equity Securities Issued as Compensation</div>, to estimate the fair value of its Common Stock prior to its IPO. Each valuation methodology included estimates and assumptions that required the Company&#x2019;s judgment.</div><div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">&nbsp;</div><div style=" font-size: 10pt; text-align: justify; text-indent: 16.65pt; margin: 0">These estimates and assumptions included a number of objective and subjective factors, including external market conditions affecting the biotechnology industry sector, the prices at which the Company sold shares of Preferred Stock, the superior rights and preferences of securities senior to the Company&#x2019;s Common Stock at the time and the likelihood of achieving a liquidity event, such as an initial public offering or a sale of the Company. Significant changes to the key assumptions used in the valuations could have resulted in different fair values of Common Stock at each valuation date and materially affected the financial statements.</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
CY2015 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
9800000
CY2014 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
3800000
CY2013 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
7300000
CY2014Q1 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
240138
CY2014Q2 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
240374
CY2014Q3 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
240610
CY2014Q4 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
12295431
CY2015 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
16464123
CY2014 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
3064507
CY2013 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
235184
CY2015Q1 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
16448688
CY2015Q2 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
16449937
CY2015Q3 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
16466945
CY2015Q4 us-gaap Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
16490430
CY2014Q1 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
240138
CY2014Q2 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
240374
CY2014Q3 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
240610
CY2014Q4 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
11444807

Files In Submission

Name View Source Status
0001171843-16-008541-index-headers.html Edgar Link pending
0001171843-16-008541-index.html Edgar Link pending
0001171843-16-008541.txt Edgar Link pending
0001171843-16-008541-xbrl.zip Edgar Link pending
exh_211.htm Edgar Link pending
exh_231.htm Edgar Link pending
exh_311.htm Edgar Link pending
exh_312.htm Edgar Link pending
exh_321.htm Edgar Link pending
f10k_031416p.htm Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
image1.jpg Edgar Link pending
image2.jpg Edgar Link pending
image3.jpg Edgar Link pending
image4.jpg Edgar Link pending
image5.jpg Edgar Link pending
image6.jpg Edgar Link pending
image7.jpg Edgar Link pending
image8.jpg Edgar Link pending
prto-20151231.xml Edgar Link completed
prto-20151231.xsd Edgar Link pending
prto-20151231_cal.xml Edgar Link unprocessable
prto-20151231_def.xml Edgar Link unprocessable
prto-20151231_lab.xml Edgar Link unprocessable
prto-20151231_pre.xml Edgar Link unprocessable
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R6.htm Edgar Link pending
R7.htm Edgar Link pending
R8.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending