Name:	drts_CommitmentsAndContingenciesLineItems
Namespace Prefix:	drts_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Income earned during the period from non-repayable sum of money awarded to an entity to carry out a specific purpose.

No definition available.

Name:	drts_GrantIncome
Namespace Prefix:	drts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The number of shares purchasable through stock options dependent on the achievement of various milestones.

No definition available.

Name:	drts_MilestoneNumberOfOrdinaryStockOptions
Namespace Prefix:	drts_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The maximum potential amount of payment based on a agreement.

No definition available.

Name:	drts_PotentialPayment
Namespace Prefix:	drts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The percentage at which royalty payments will be paid out on relative to the amount of grants received plus interest at LIBOR rate.

No definition available.

Name:	drts_RoyaltyPaymentAsPercentageOfGrants
Namespace Prefix:	drts_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The percentage at which royalty payments will be paid out on.

No definition available.

Name:	drts_RoyaltyRate
Namespace Prefix:	drts_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The per share exercise price of option.

No definition available.

Name:	drts_StockOptionExercisePrice
Namespace Prefix:	drts_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The fair value of liabilities assumed in noncash investing or financing activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586

Name:	us-gaap_LiabilitiesAssumed1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

Name:	us-gaap_RoyaltyExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer.

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 210.5-02.19(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910