$GERN
GERON CORP Stock $gern

$gern Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000104746914002454 Filed on March 17, 2014

Income Statement

Concept	2013 Q4	2013 Q3	2013 Q2
Revenue	$225.0K	$181.0K	$112.0K
YoY Change	-67.34%	-71.54%	-13.85%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$3.980M	$3.460M	$3.430M
YoY Change	-14.78%	-28.36%	-41.17%
% of Gross Profit
Research & Development	$5.090M	$5.338M	$4.807M
YoY Change	-56.86%	-54.31%	-62.38%
% of Gross Profit
Depreciation & Amortization	-$40.00K	$100.0K	$120.0K
YoY Change	-123.53%	-47.37%	-45.45%
% of Gross Profit
Operating Expenses	$9.500M	$8.914M	$9.077M
YoY Change	-50.45%	-46.02%	-51.22%
Operating Profit		-$8.733M	-$8.965M
YoY Change		-45.0%	-51.49%
Interest Expense	-$10.00K	$480.0K	$20.00K
YoY Change	-100.38%	-700.0%	-86.67%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$9.280M	-$8.250M	-$8.950M
YoY Change	-41.49%	-48.28%	-51.17%
Income Tax	$0.00	$0.00	$0.00
% Of Pretax Income
Net Earnings	-$9.281M	-$8.254M	-$8.947M
YoY Change	-41.49%	-48.26%	-51.18%
Net Earnings / Revenue	-4124.89%	-4560.22%	-7988.39%
Basic Earnings Per Share
Diluted Earnings Per Share	-$71.89K	-$64.31K	-$69.83K
COMMON SHARES
Basic Shares Outstanding		128.6M shares	130.4M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2013 Q4	2013 Q3	2013 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$65.20M	$66.20M	$70.80M
YoY Change	-31.73%	-34.13%	-40.1%
Cash & Equivalents	$12.99M	$9.591M	$8.834M
Short-Term Investments	$52.20M	$56.60M	$62.00M
Other Short-Term Assets	$1.300M	$1.600M	$1.200M
YoY Change	-38.1%	-11.11%	-29.41%
Inventory
Prepaid Expenses	$474.0K	$844.0K	$356.0K
Receivables
Other Receivables
Total Short-Term Assets	$67.06M	$68.40M	$72.43M
YoY Change	-31.86%	-33.62%	-40.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$92.00K	$116.0K	$566.0K
YoY Change	-90.55%	-91.89%	-52.83%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$200.0K	$200.0K	$400.0K
YoY Change	-50.0%	-75.0%	-50.0%
Total Long-Term Assets	$287.0K	$311.0K	$980.0K
YoY Change	-79.26%	-96.09%	-81.68%
TOTAL ASSETS
Total Short-Term Assets	$67.06M	$68.40M	$72.43M
Total Long-Term Assets	$287.0K	$311.0K	$980.0K
Total Assets	$67.34M	$68.71M	$73.41M
YoY Change	-32.52%	-38.1%	-41.83%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.397M	$1.547M	$1.176M
YoY Change	-59.26%	-48.67%	-65.41%
Accrued Expenses	$1.783M	$1.985M	$1.358M
YoY Change	-48.76%	-52.41%	-84.02%
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	$7.587M	$6.837M	$5.004M
YoY Change	-46.37%	-39.26%	-58.27%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$0.00	$0.00	$0.00
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities	$7.587M	$6.837M	$5.004M
Total Long-Term Liabilities	$0.00	$0.00	$0.00
Total Liabilities	$7.600M	$6.800M	$5.000M
YoY Change	-46.1%	-39.82%	-58.33%
SHAREHOLDERS EQUITY
Retained Earnings	-$892.8M	-$883.5M	-$875.2M
YoY Change	4.49%	5.36%
Common Stock	$952.5M	$945.4M	$943.6M
YoY Change	1.33%	0.76%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$59.76M	$61.88M	$68.41M
YoY Change
Total Liabilities & Shareholders Equity	$67.34M	$68.71M	$73.41M
YoY Change	-32.52%	-38.11%	-41.83%

Cashflow Statement

Concept	2013 Q4	2013 Q3	2013 Q2
OPERATING ACTIVITIES
Net Income	-$9.281M	-$8.254M	-$8.947M
YoY Change	-41.49%	-48.26%	-51.18%
Depreciation, Depletion And Amortization	-$40.00K	$100.0K	$120.0K
YoY Change	-123.53%	-47.37%	-45.45%
Cash From Operating Activities	-$6.800M	-$5.730M	-$7.920M
YoY Change	-34.74%	-60.15%	-42.44%
INVESTING ACTIVITIES
Capital Expenditures	$60.00K	$0.00	-$30.00K
YoY Change	-700.0%	-100.0%	-92.31%
Acquisitions
YoY Change
Other Investing Activities	$4.090M	$6.050M	$1.230M
YoY Change	-75.08%	-63.66%	-86.57%
Cash From Investing Activities	$4.140M	$6.040M	$1.210M
YoY Change	-74.76%	-62.85%	-86.22%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	6.060M	430.0K	50.00K
YoY Change	8557.14%		-37.5%
NET CHANGE
Cash From Operating Activities	-6.800M	-5.730M	-7.920M
Cash From Investing Activities	4.140M	6.040M	1.210M
Cash From Financing Activities	6.060M	430.0K	50.00K
Net Change In Cash	3.400M	740.0K	-6.660M
YoY Change	-43.8%	-60.64%	35.92%
FREE CASH FLOW
Cash From Operating Activities	-$6.800M	-$5.730M	-$7.920M
Capital Expenditures	$60.00K	$0.00	-$30.00K
Free Cash Flow	-$6.860M	-$5.730M	-$7.890M
YoY Change	-34.1%	-59.07%	-40.99%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	386000	USD
CY2013Q2	dei	Entity Public Float EntityPublicFloat	193220000	USD
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="FONT-FAMILY: times;"><font size="2"><b>Use of Estimates</b></font></p> <p style="FONT-FAMILY: times;"><font size="2">        The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. On a regular basis, management evaluates these estimates and assumptions. Actual results could differ from those estimates.</font></p> </div>
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	73431000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5216000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	52248000	USD
CY2012Q4	gern	Gross Unrealized Gains Available For Sale Securities GrossUnrealizedGainsAvailableForSaleSecurities	48000	USD
CY2013Q4	gern	Gross Unrealized Gains Available For Sale Securities GrossUnrealizedGainsAvailableForSaleSecurities	5000	USD
CY2012Q4	gern	Gross Unrealized Losses Available For Sale Securities GrossUnrealizedLossesAvailableForSaleSecurities	7000	USD
CY2013Q4	gern	Gross Unrealized Losses Available For Sale Securities GrossUnrealizedLossesAvailableForSaleSecurities	19000	USD
CY2012Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	73472000	USD
CY2013Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	52234000	USD
CY2012Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	1972000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	3480000	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	51000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	22063000	USD
CY2012Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	73472000	USD
CY2012Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	752000	USD
CY2012Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1336000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	98417000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	974000	USD
CY2012Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	410000	USD
CY2012Q4	us-gaap	Assets Assets	99801000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	3429000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	14148000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	130000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	939867000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-854384000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	85653000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	99801000	USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Assets Assets	67344000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	67057000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7587000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	59757000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	67344000	USD
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	3000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	3000000	shares
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	56000	USD
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	130677949	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	130242695	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	130677949	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	130242695	shares
CY2012	gern	Licenses And Royalty Revenue LicensesAndRoyaltyRevenue	2709000	USD
CY2011	gern	Licenses And Royalty Revenue LicensesAndRoyaltyRevenue	2138000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	367000	USD
CY2013	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	23155000	USD
CY2012	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	51368000	USD
CY2011	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	69316000	USD
CY2013	us-gaap	Restructuring Charges RestructuringCharges	1462000	USD
CY2012	us-gaap	Restructuring Charges RestructuringCharges	2702000	USD
CY2011	us-gaap	Restructuring Charges RestructuringCharges	5449000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	15624000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	20397000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	23789000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	40241000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	74467000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	98554000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	-38958000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	-71758000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	-96116000	USD
CY2013	us-gaap	Depreciation Nonproduction DepreciationNonproduction	320000	USD
CY2012	us-gaap	Depreciation Nonproduction DepreciationNonproduction	830000	USD
CY2011	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1580000	USD
CY2013	us-gaap	Interest And Other Income InterestAndOtherIncome	951000	USD
CY2012	us-gaap	Interest And Other Income InterestAndOtherIncome	3097000	USD
CY2012	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.54
CY2011	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.78
CY2012	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	126941024	shares
CY2011	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	124506763	shares
CY2011	us-gaap	Interest And Other Income InterestAndOtherIncome	1024000	USD
CY2013	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1322000	USD
CY2012	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2184000	USD
CY2011	us-gaap	Contracts Revenue ContractsRevenue	300000	USD
CY2013	us-gaap	Revenues Revenues	1283000	USD
CY2012	us-gaap	Revenues Revenues	2709000	USD
CY2011	us-gaap	Revenues Revenues	2438000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-54000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-38000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	16000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-153000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-54000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	131000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-38433000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-68750000	USD
CY2011	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4422000	USD
CY2011	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	51000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	794000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	233000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-96848000	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1664000	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	831000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	142000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-5000	USD
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	200000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	271000	USD
CY2011	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	874000	USD
CY2011	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	-2000	USD
CY2011	gern	Research And Development Asset Acquired Other Than Through Business Combination Written Off Non Cash ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOffNonCash	594000	USD
CY2013	gern	Increase Decrease In Accrued Interest Receivable Net And Other Receivables IncreaseDecreaseInAccruedInterestReceivableNetAndOtherReceivables	-188000	USD
CY2012	gern	Increase Decrease In Accrued Interest Receivable Net And Other Receivables IncreaseDecreaseInAccruedInterestReceivableNetAndOtherReceivables	-646000	USD
CY2011	gern	Increase Decrease In Accrued Interest Receivable Net And Other Receivables IncreaseDecreaseInAccruedInterestReceivableNetAndOtherReceivables	-401000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-1081000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-1311000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-4085000	USD
CY2013	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	4000	USD
CY2012	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	-112000	USD
CY2011	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	658000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-62392000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-55146000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	4435000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	5311000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	15249000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2032000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	449000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-482000	USD
CY2013	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-431000	USD
CY2012	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	3548000	USD
CY2011	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	944000	USD
CY2013	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	-1878000	USD
CY2012	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	-1758000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-36680000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	612000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	144890000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	809000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	176832000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	1000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	32139000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	862000	USD
CY2013	gern	Amortization Related To Share Based Matching Contributions AmortizationRelatedToShareBasedMatchingContributions	458000	USD
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11497	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	294426	shares
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	532120	shares
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	795000	USD
CY2013	us-gaap	Property Plant And Equipment Useful Life PropertyPlantAndEquipmentUsefulLife	P4Y
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	40000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	40000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-14000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-14000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	00	USD
CY2013	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
CY2012Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	18796000	USD
CY2012Q4	gern	Cash And Cash Equivalents Unrealized Losses CashAndCashEquivalentsUnrealizedLosses	1000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	18795000	USD
CY2012Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue	794000	USD
CY2012	gern	Amortization Related To Share Based Matching Contributions AmortizationRelatedToShareBasedMatchingContributions	726000	USD
CY2011	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	3730000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	170000	USD
CY2012	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	79369000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	141016000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	60954000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	21054000	USD
CY2011	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	6422000	USD
CY2011	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	6422000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6553000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	150000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-29867000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	5958000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	386000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	6553000	USD
CY2013	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.30
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	150000	USD
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-9073000	USD
CY2013Q4	us-gaap	Restructuring Charges RestructuringCharges	430000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	45972000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16105000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12990000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	192735000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	146603000	USD
CY2011	us-gaap	Stock Issued During Period Value Purchase Of Assets StockIssuedDuringPeriodValuePurchaseOfAssets	28094000	USD
CY2013	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	252000	USD
CY2012	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	183000	USD
CY2011	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	744000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3263000	USD
CY2012	gern	Stock Issued During Period Value Restricted Stock Award Forfeitures Net Of Issuances Of Common Stock StockIssuedDuringPeriodValueRestrictedStockAwardForfeituresNetOfIssuancesOfCommonStock	-267000	USD
CY2013	gern	Stock Issued During Period Value Restricted Stock Award Forfeitures Net Of Issuances Of Common Stock StockIssuedDuringPeriodValueRestrictedStockAwardForfeituresNetOfIssuancesOfCommonStock	-6553000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5311000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15249000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4435000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	1715000	USD
CY2012	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	2087000	USD
CY2011	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	1680000	USD
CY2013	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	1297000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1284000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13451000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1192000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12477000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	92000	USD
CY2012Q4	gern	Accrued Sponsored Research Agreements Current AccruedSponsoredResearchAgreementsCurrent	266000	USD
CY2013Q4	gern	Accrued Service Provider Obligations Current AccruedServiceProviderObligationsCurrent	840000	USD
CY2012Q4	gern	Accrued Service Provider Obligations Current AccruedServiceProviderObligationsCurrent	290000	USD
CY2013Q4	gern	Accrued Clinical Trials Current AccruedClinicalTrialsCurrent	326000	USD
CY2012Q4	gern	Accrued Clinical Trials Current AccruedClinicalTrialsCurrent	1687000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	617000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1237000	USD
CY2013Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1783000	USD
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	11194000	USD
CY2013Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	195000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	237000	USD
CY2013	us-gaap	Payments For Restructuring PaymentsForRestructuring	2911000	USD
CY2013	us-gaap	Restructuring Reserve Accrual Adjustment RestructuringReserveAccrualAdjustment	-429000	USD
CY2013Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	94000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1422000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1474000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1311000	USD
CY2012	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Dividend Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedDividendRate	0	pure
CY2013	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Dividend Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedDividendRate	0	pure
CY2012	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Volatility Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedVolatilityRate	0.828	pure
CY2013	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Volatility Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedVolatilityRate	0.844	pure
CY2012	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Risk Free Interest Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodRiskFreeInterestRate	0.0025	pure
CY2013	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Risk Free Interest Rate ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodRiskFreeInterestRate	0.0013	pure
CY2012	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Term1 ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedTerm1	P2Y
CY2013	gern	Number Of Financial Institutions With Which Cash Cash Equivalents And Marketable Securities Are Placed NumberOfFinancialInstitutionsWithWhichCashCashEquivalentsAndMarketableSecuritiesArePlaced	5	item
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.35
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	4.25
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	4.26
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	3.08
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y9M29D
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y18D
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y9M7D
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	33798000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	32402000	USD
CY2013Q4	us-gaap	Share Price SharePrice	4.74
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	10109076	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	10410194	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	6.02
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	5.49
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	56000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2787000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1000	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	184000	USD
CY2013	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6567000	USD
CY2011	gern	Stock Issued During Period Value Employee Benefit Plan And Share Based Compensation StockIssuedDuringPeriodValueEmployeeBenefitPlanAndShareBasedCompensation	3778000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5311000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15249000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4435000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	6921000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P31M
CY2013	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	128380800	shares
CY2013Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1619275	shares
CY2013Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	33666145	shares
CY2012	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	1.00	pure
CY2011	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	1.00	pure
CY2013	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.75	pure
CY2012	gern	Defined Contribution Plan Vesting Period Of Matching Contributions DefinedContributionPlanVestingPeriodOfMatchingContributions	P4Y
CY2011	gern	Defined Contribution Plan Vesting Period Of Matching Contributions DefinedContributionPlanVestingPeriodOfMatchingContributions	P4Y
CY2011	gern	Defined Contribution Plan Service Period Of Employees To Be Fully Vested In Employer Matching Contribution DefinedContributionPlanServicePeriodOfEmployeesToBeFullyVestedInEmployerMatchingContribution	P4Y
CY2013	gern	Defined Contribution Plan Vesting Period Of Matching Contributions DefinedContributionPlanVestingPeriodOfMatchingContributions	P4Y
CY2013	gern	Defined Contribution Plan Service Period Of Employees To Be Fully Vested In Employer Matching Contribution DefinedContributionPlanServicePeriodOfEmployeesToBeFullyVestedInEmployerMatchingContribution	P4Y
CY2013Q4	gern	Defined Contribution Plan Unvested Employer Matching Contributions Amount To Be Amortized DefinedContributionPlanUnvestedEmployerMatchingContributionsAmountToBeAmortized	369000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	248700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	20000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	20500000	USD
CY2012Q4	gern	Deferred Tax Assets Capitalized Research And Development DeferredTaxAssetsCapitalizedResearchAndDevelopment	19400000	USD
CY2012Q4	gern	Deferred Tax Assets Capitalized License Fees DeferredTaxAssetsCapitalizedLicenseFees	1100000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	323700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	323700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	271800000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	6300000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	22700000	USD
CY2013Q4	gern	Deferred Tax Assets Capitalized Research And Development DeferredTaxAssetsCapitalizedResearchAndDevelopment	6600000	USD
CY2013Q4	gern	Deferred Tax Assets Capitalized License Fees DeferredTaxAssetsCapitalizedLicenseFees	700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	10100000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	-18739000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	-18326000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	-15953000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-15863000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.15
CY2012Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.14
CY2012Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13
CY2012Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.12
CY2012Q4	us-gaap	Restructuring Charges RestructuringCharges	2702000	USD
CY2013Q4	us-gaap	Revenues Revenues	225000	USD
CY2013Q4	us-gaap	Operating Expenses OperatingExpenses	9500000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	-9281000	USD
CY2013Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2013Q3	us-gaap	Revenues Revenues	181000	USD
CY2013Q3	us-gaap	Operating Expenses OperatingExpenses	8914000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	-8254000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	318200000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	318200000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	14200000	USD
CY2013Q4	gern	Deferred Taxes Valuation Allowance Stock Option Deduction DeferredTaxesValuationAllowanceStockOptionDeduction	5550000	USD
CY2011	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	27300000	USD
CY2013	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-5500000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10500000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11600000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	500000	USD
CY2013	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	item
CY2013	gern	Stock And Options Issued During Period Value Issued For Services StockAndOptionsIssuedDuringPeriodValueIssuedForServices	252000	USD
CY2012	gern	Stock And Options Issued During Period Value Issued For Services StockAndOptionsIssuedDuringPeriodValueIssuedForServices	135000	USD
CY2011	gern	Stock Issued During Period Value Purchase Of Research And Development Assets StockIssuedDuringPeriodValuePurchaseOfResearchAndDevelopmentAssets	27500000	USD
CY2011	gern	Reclassification Of Deposits To Other Current Assets ReclassificationOfDepositsToOtherCurrentAssets	180000	USD
CY2012	gern	Reclassification Of Deposits To Other Current Assets ReclassificationOfDepositsToOtherCurrentAssets	-526000	USD
CY2013	gern	Reclassification Of Deposits To Other Current Assets ReclassificationOfDepositsToOtherCurrentAssets	-219000	USD
CY2012	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	-38000	USD
CY2011	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	6000	USD
CY2013	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss	-54000	USD
CY2012Q1	us-gaap	Revenues Revenues	1254000	USD
CY2012Q2	us-gaap	Revenues Revenues	130000	USD
CY2012Q3	us-gaap	Revenues Revenues	636000	USD
CY2012Q4	us-gaap	Revenues Revenues	689000	USD
CY2012Q1	us-gaap	Operating Expenses OperatingExpenses	20172000	USD
CY2012Q2	us-gaap	Operating Expenses OperatingExpenses	18609000	USD
CY2012Q3	us-gaap	Operating Expenses OperatingExpenses	16513000	USD
CY2012Q4	us-gaap	Operating Expenses OperatingExpenses	19173000	USD
CY2013Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.06
CY2013Q2	us-gaap	Revenues Revenues	112000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	11600000	USD
CY2013Q2	us-gaap	Operating Expenses OperatingExpenses	9077000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	-8947000	USD
CY2013Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2013Q1	us-gaap	Revenues Revenues	765000	USD
CY2013Q1	us-gaap	Operating Expenses OperatingExpenses	12750000	USD
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CY2013Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.09
CY2013Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	10285000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	10285000	USD
CY2013	us-gaap	Share Based Goods And Nonemployee Services Transaction Valuation Method Expected Term1 ShareBasedGoodsAndNonemployeeServicesTransactionValuationMethodExpectedTerm1	P1Y
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CY2013Q4	gern	Number Of Products Available For Sale NumberOfProductsAvailableForSale	0	item
CY2013	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	-38379000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-68881000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	0	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2013Q4	us-gaap	Restricted Investments At Fair Value RestrictedInvestmentsAtFairValue	795000	USD
CY2013Q4	gern	Share Based Compensation Arrangement By Share Based Payment Award Number Of Options Granted With Exercise Price Below Or Greater Than Fair Value At Date Of Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsGrantedWithExercisePriceBelowOrGreaterThanFairValueAtDateOfGrant	0	shares
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	41007000	USD
CY2013Q4	gern	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	19000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	41007000	USD
CY2013Q4	gern	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLoss	19000	USD
CY2013Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	52234000	USD
CY2013Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	564000	USD
CY2013Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	474000	USD
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1397000	USD
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	3946000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	131000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	952403000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-892763000	USD
CY2013	gern	Licenses And Royalty Revenue LicensesAndRoyaltyRevenue	1283000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	-96853000	USD
CY2011	gern	Amortization Related To Share Based Matching Contributions AmortizationRelatedToShareBasedMatchingContributions	709000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-503000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-316000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	13000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	643000	USD
CY2013	gern	Stock Issued During Period Value Employee Benefit Plan And Share Based Compensation StockIssuedDuringPeriodValueEmployeeBenefitPlanAndShareBasedCompensation	839000	USD
CY2012	gern	Stock Issued During Period Value Employee Benefit Plan And Share Based Compensation StockIssuedDuringPeriodValueEmployeeBenefitPlanAndShareBasedCompensation	1361000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	13557771	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	16207250	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	6366000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	66853	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	6641045	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	2441287	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	17811506	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	15576216	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1960245	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	8144040	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	15122068	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.05
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.04
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	1.57
CY2013	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1697000	USD
CY2012	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-92000	USD
CY2011	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	1038000	USD
CY2011	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-350000	USD
CY2012	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	169000	USD
CY2011	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-1000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3000	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1196000	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	88977000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	108839000	USD
CY2011	us-gaap	Interest Paid InterestPaid	37000	USD
CY2013Q4	gern	Carrying Value Of Stem Cell Assets CarryingValueOfStemCellAssets	0	USD
CY2011	gern	Stock And Options Issued During Period Value Issued For Services StockAndOptionsIssuedDuringPeriodValueIssuedForServices	715000	USD
CY2012	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	69000	USD
CY2011	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	41000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	600000	USD
CY2013	gern	Gain Loss On Assets Surrendered GainLossOnAssetsSurrendered	0	USD
CY2012Q4	gern	Share Based Compensation Arrangement By Share Based Payment Award Number Of Options Granted With Exercise Price Below Or Greater Than Fair Value At Date Of Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsGrantedWithExercisePriceBelowOrGreaterThanFairValueAtDateOfGrant	0	shares
CY2011Q4	gern	Share Based Compensation Arrangement By Share Based Payment Award Number Of Options Granted With Exercise Price Below Or Greater Than Fair Value At Date Of Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsGrantedWithExercisePriceBelowOrGreaterThanFairValueAtDateOfGrant	0	shares
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD

Files In Submission

Name	View Source	Status
0001047469-14-002454-index-headers.html	Edgar Link	pending
0001047469-14-002454-index.html	Edgar Link	pending
0001047469-14-002454.txt	Edgar Link	pending
0001047469-14-002454-xbrl.zip	Edgar Link	pending
a2218685z10-k.htm	Edgar Link	pending
a2218685zex-10_36.htm	Edgar Link	pending
a2218685zex-10_37.htm	Edgar Link	pending
a2218685zex-12_1.htm	Edgar Link	pending
a2218685zex-23_1.htm	Edgar Link	pending
a2218685zex-31_1.htm	Edgar Link	pending
a2218685zex-31_2.htm	Edgar Link	pending
a2218685zex-32_1.htm	Edgar Link	pending
a2218685zex-32_2.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
g159659.jpg	Edgar Link	pending
gern-20131231.xml	Edgar Link	completed
gern-20131231.xsd	Edgar Link	pending
gern-20131231_cal.xml	Edgar Link	unprocessable
gern-20131231_def.xml	Edgar Link	unprocessable
gern-20131231_lab.xml	Edgar Link	unprocessable
gern-20131231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$GERN
GERON CORP Stock $gern

2013 Q4 Form 10-K Financial Statement

#000104746914002454 Filed on March 17, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GERN GERON CORP Stock $gern

2013 Q4 Form 10-K Financial Statement

#000104746914002454 Filed on March 17, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GERN
GERON CORP Stock $gern