Represents the first customary conversion blockers under debt instrument.

No definition available.

Name:	kool_DebtInstrumentConvertibleFirstCustomaryConversionBlockers
Namespace Prefix:	kool_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the second customary conversion blockers under debt instrument.

+ References

No definition available.

+ Details

Name:	kool_DebtInstrumentConvertibleSecondCustomaryConversionBlockers
Namespace Prefix:	kool_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the minority interest acquired through exchange.

+ References

No definition available.

+ Details

Name:	kool_MinorityInterestAcquiredThroughExchange
Namespace Prefix:	kool_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the ownership in subsidiary exchanged.

+ References

No definition available.

+ Details

Name:	kool_OwnershipInSubsidiaryExchanged
Namespace Prefix:	kool_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=kool_NotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=kool_ThermoGenesisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=kool_CARTXpressMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 16 - Subsequent Events (Details Textual) - USD ($)	Jan. 29, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Common Stock, Par or Stated Value Per Share			$ 0.001	$ 0.001
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share	$ 0.001
Subsequent Event [Member] \| Convertible Debt [Member] \| Notes [Member]
Debt Instrument, Face Amount	$ 800,000
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	90.00%
Debt Instrument, Interest Rate, Stated Percentage	24.00%
Debt Instrument, Term	1 year 180 days
Debt Instrument, Convertible, First Customary Conversion Blockers	4.99%
Debt Instrument, Convertible, Second customary conversion blockers	9.99%
Subsequent Event [Member] \| Convertible Debt [Member] \| Notes [Member] \| Maximum [Member]
Debt Instrument, Convertible, Conversion Price	$ 0.18
Subsequent Event [Member] \| Convertible Debt [Member] \| Notes [Member] \| Minimum [Member]
Debt Instrument, Convertible, Conversion Price	$ 0.05
ThermoGenesis [Member]
Noncontrolling Interest, Ownership Percentage by Parent			80.00%
ThermoGenesis [Member] \| Subsequent Event [Member]
Minority Interest Acquired Through Exchange		20.00%
Noncontrolling Interest, Ownership Percentage by Parent		100.00%
CAR-TXpress [Member] \| Subsequent Event [Member]
Ownership in Subsidiary Exchanged		20.00%
Noncontrolling Interest, Ownership Percentage by Parent		80.00%