Compensation excluded for payroll costs.

No definition available.

Name:	atec_CompensationExcludedForPayrollCosts
Namespace Prefix:	atec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum amount of compensation to be considered to reduce forgiveness.

+ References

No definition available.

+ Details

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Namespace Prefix:	atec_
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Balance Type:	debit
Period Type:	duration

- Definition

Maximum percentage forgiven for non-payroll costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	atec_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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- Definition

Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total.

+ References

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+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
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-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Balance Type:	na
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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

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Period Type:	duration

- 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

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Period Type:	duration

- Details

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Period Type:

Debt - Paycheck Protection Loan (Details) - USD ($)		12 Months Ended
Debt - Paycheck Protection Loan (Details) - USD ($)	Apr. 23, 2020	Dec. 31, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Gain (loss) on debt extinguishment		$ (7,434,000)	$ (7,612,000)
Paycheck Protection Program Loans
Line Of Credit Facility [Line Items]
Proceeds from loan	$ 4,300,000
Debt instrument, maturity date	Apr. 21, 2022
Interest rate	1.00%
Debt instrument, Description	Commencing August 21, 2021, the Company was required to pay the lender equal monthly payments of principal and interest as required to fully amortize the principal amount outstanding on the PPP Loan by April 21, 2022, the date prescribed by guidance issued by U.S. Small Business Administration (“SBA”).
Amount of compensation excluded for payroll costs	$ 100,000
Maximum percentage forgiven for non-payroll costs.	25.00%
Maximum amount of compensation to reduce the forgiveness	$ 100,000
Debt forgiveness	4,300,000
Gain (loss) on debt extinguishment	$ 4,300,000