XML 21 R28.htm IDEA: XBRL DOCUMENT
v2.4.1.9

RESTRUCTURING (Details) (USD $) | 3 Months Ended | 0 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 03, 2015
RESTRUCTURING |  |
Restructuring charges | $ 406,000 us-gaap_RestructuringCharges |
Outstanding restructuring liability |  |
Restructuring Charges. | 406,000 us-gaap_RestructuringCharges |
Accrual balance at the end of the period | 316,000 us-gaap_RestructuringReserveCurrent |
Employee Severance And Other Benefits |  |
RESTRUCTURING |  |
Restructuring charges | 406,000 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = gern_EmployeeSeveranceAndOtherBenefitsMember |
Stock-based compensation expense related to extension of the post-termination exercise period | (90,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost / us-gaap_RestructuringCostAndReserveAxis = gern_EmployeeSeveranceAndOtherBenefitsMember |
Outstanding restructuring liability |  |
Restructuring Charges. | 406,000 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = gern_EmployeeSeveranceAndOtherBenefitsMember |
Stock-based compensation expense related to extension of the post-termination exercise period | (90,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost / us-gaap_RestructuringCostAndReserveAxis = gern_EmployeeSeveranceAndOtherBenefitsMember |
Accrual balance at the end of the period | 316,000 us-gaap_RestructuringReserveCurrent / us-gaap_RestructuringCostAndReserveAxis = gern_EmployeeSeveranceAndOtherBenefitsMember |
March 2015 Restructuring |  |
RESTRUCTURING |  |
Number of positions before restructuring |  | 39 gern_RestructuringAndRelatedCostNumberOfPositionsBeforeRestructuring / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember
Number of positions after restructuring |  | 21 gern_RestructuringAndRelatedCostNumberOfPositionsAfterRestructuring / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember
Original exercise period for vested outstanding awards after termination |  | 90 days
Modified exercise period for vested outstanding awards after termination |  | 1 year
Aggregate estimated restructuring charges |  | 1,748,000 gern_ExpectedCostsRestructuringAndRelatedCost / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember
Expected cash payments |  | 1,377,000 gern_RestructuringChargesExpectedToBeSettledWithCash / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember
March 2015 Restructuring | One-time termination benefits |  |
RESTRUCTURING |  |
Restructuring charges | 406,000 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OneTimeTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember |
Stock-based compensation expense related to extension of the post-termination exercise period | 90,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OneTimeTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember |
Outstanding restructuring liability |  |
Restructuring Charges. | 406,000 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OneTimeTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember |
Stock-based compensation expense related to extension of the post-termination exercise period | $ 90,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OneTimeTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = gern_March2015RestructuringPlanMember |

X
- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References No definition available. + Details
Name: | gern_ExpectedCostsRestructuringAndRelatedCost
Namespace Prefix: | gern_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the number of positions after restructuring. + References No definition available. + Details
Name: | gern_RestructuringAndRelatedCostNumberOfPositionsAfterRestructuring
Namespace Prefix: | gern_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of positions before restructuring. + References No definition available. + Details
Name: | gern_RestructuringAndRelatedCostNumberOfPositionsBeforeRestructuring
Namespace Prefix: | gern_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the amount of cash expected to be paid in a future period to settle projected restructuring charges to be incurred pursuant to a duly authorized plan. + References No definition available. + Details
Name: | gern_RestructuringChargesExpectedToBeSettledWithCash
Namespace Prefix: | gern_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Modified exercise period in which an employee can exercise outstanding vested awards after termination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | gern_SharebasedCompensationArrangementBySharebasedPaymentAwardModifiedExercisePeriodAfterTermination
Namespace Prefix: | gern_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Original exercise period in which an employee can exercise outstanding vested awards after termination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | gern_SharebasedCompensationArrangementBySharebasedPaymentAwardOriginalExercisePeriodAfterTermination
Namespace Prefix: | gern_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
Name: | us-gaap_RestructuringReserveCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RestructuringReserveRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition An excess of the fair value of the modified award over the fair value of the award immediately before the modification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=gern_EmployeeSeveranceAndOtherBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=gern_March2015RestructuringPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |