Debt Instrument, Convertible, Net Of Tax

No definition available.

Name:	cry_DebtInstrumentConvertibleNetOfTax
Namespace Prefix:	cry_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt Instrument, Convertible, Redemption Percentage Of Principal Amount

+ References

No definition available.

+ Details

Name:	cry_DebtInstrumentConvertibleRedemptionPercentageOfPrincipalAmount
Namespace Prefix:	cry_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument, debt default, interest rate in addition if there is a default.

+ References

No definition available.

+ Details

Name:	cry_DebtInstrumentDebtDefaultInterestRate
Namespace Prefix:	cry_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, First Lien Net Leverage Ratio

+ References

No definition available.

+ Details

Name:	cry_DebtInstrumentFirstLienNetLeverageRatio
Namespace Prefix:	cry_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Maximum Principal Amount Of Loans Outstanding Under Revolving Credit Facility

+ References

No definition available.

+ Details

Name:	cry_LineOfCreditFacilityMaximumPrincipalAmountOfLoansOutstandingUnderRevolvingCreditFacility
Namespace Prefix:	cry_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Maximum Threshold Principal Amount Of Loans Outstanding, Percentage

+ References

No definition available.

+ Details

Name:	cry_LineOfCreditFacilityMaximumThresholdPrincipalAmountOfLoansOutstandingPercentage
Namespace Prefix:	cry_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility, percentage threshold of principal amount outstanding.

+ References

No definition available.

+ Details

Name:	cry_LineOfCreditFacilityPercentageThresholdOfPrincipalAmountOutstanding
Namespace Prefix:	cry_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum Liquidity Covenant Restrictions Requirement

+ References

No definition available.

+ Details

Name:	cry_MinimumLiquidityCovenantRestrictionsRequirement
Namespace Prefix:	cry_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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=120520924&loc=SL6031898-161870

+ Details

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ 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
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+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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+ Details

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

- Definition

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

+ References

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
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-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
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Balance Type:	na
Period Type:	duration

- 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

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
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-Paragraph 1
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Period Type:

- Details

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- Details

Name:	srt_StatementScenarioAxis=cry_CircumstanceAfterJuly52023Member
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- Details

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Debt (Narrative) (Details)			1 Months Ended	9 Months Ended	12 Months Ended
Debt (Narrative) (Details)	Jun. 18, 2020 USD ($) $ / shares	Apr. 29, 2020 USD ($)	Jun. 30, 2015	Sep. 30, 2018	Dec. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2020 USD ($)	Dec. 01, 2017 USD ($)
Line of Credit Facility [Line Items]
Term loan balance					$ 300,148,000	$ 223,176,000
Credit facility default interest rate					2.00%
Credit facility aggregate interest rate					4.25%
Credit facility commitment fee percentage					0.50%
Credit facility repayments					$ 30,000,000
Proceeds from issuance of convertible debt					100,000,000
Interest expense					16,700,000	14,900,000	$ 15,800,000
Government Sponsored Debt [Member]
Line of Credit Facility [Line Items]
Loan term			9 years
2.45% Sparkasse Zollernalb (KFW Loan 1) [Member]
Line of Credit Facility [Line Items]
Term loan balance					$ 886,000	1,061,000
Interest rate on amounts borrowed			2.45%		2.45%
1.40% Sparkasse Zollernalb (KFW Loan 2) [Member]
Line of Credit Facility [Line Items]
Term loan balance					$ 1,457,000	1,615,000
Interest rate on amounts borrowed			1.40%		1.40%
Convertible Senior Notes [Member]
Line of Credit Facility [Line Items]
Credit facility repayments					$ 30,000,000.0
Face value	$ 100,000,000.0
Interest rate on amounts borrowed	4.25%
Maturity date					Jul. 01, 2025
Proceeds from issuance of convertible debt	$ 96,500,000
Conversion ratio	42.6203
Conversion principle amount	$ 1,000
Conversion price \| $ / shares	$ 23.46
Conversion feature					$ 16,400,000
Conversion, Net of tax					4,700,000
Interest expense					$ 4,200,000
Convertible Senior Notes [Member] \| Circumstance I [Member]
Line of Credit Facility [Line Items]
Conversion trading day threshold \| item					20
Conversion consecutive trading day threshold \| item					30
Conversion percentage of stock price threshold					130.00%
Convertible Senior Notes [Member] \| Circumstance II [Member]
Line of Credit Facility [Line Items]
Conversion principle amount					$ 1,000
Conversion trading day threshold \| item					5
Conversion consecutive trading day threshold \| item					5
Conversion percentage of stock price threshold					98.00%
Convertible Senior Notes [Member] \| Circumstance After July 5, 2023 [Member]
Line of Credit Facility [Line Items]
Conversion trading day threshold \| item					20
Conversion consecutive trading day threshold \| item					30
Conversion percentage of stock price threshold					130.00%
Conversion percentage of principal amount					100.00%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility aggregate commitments									$ 30,000,000.0
Term loan balance					$ 79,555,000
Credit facility maturity date					Dec. 01, 2022
Credit facility outstanding balance								$ 30,000,000.0
Credit facility aggregate interest rate								5.20%
Credit facility repayments					$ 30,000,000.0
Line of credit facility, percentage threshold of principal amount outstanding					25.00%
Revolving Credit Facility [Member] \| Amended Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum percentage allowed for total principal amount of loans		25.00%
Maximum principal amount of loans outstanding		$ 7,500,000
First lien net leverage ratio		3.4
Minimum liquidity requirement		$ 12,000,000.0
Revolving Credit Facility [Member] \| Minimum [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Credit facility margin					3.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Credit facility margin					4.00%
Revolving Credit Facility [Member] \| Maximum [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Credit facility margin					3.25%
Revolving Credit Facility [Member] \| Maximum [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Credit facility margin					4.25%
Secured Debt [Member]
Line of Credit Facility [Line Items]
Credit facility aggregate commitments									255,000,000.0
Credit facility outstanding balance									225,000,000.0
Term Loan [Member]
Line of Credit Facility [Line Items]
Term loan balance					$ 218,250,000	$ 220,500,000			$ 225,000,000.0
Credit facility maturity date					Dec. 01, 2024
Term Loan [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Credit facility margin				3.00%	2.25%
Term Loan [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Credit facility margin				4.00%	3.25%