v2.4.0.6

3. Interest, Advances and Promissory Notes Payable (Detail) - Advances Payable Activity (USD $)	18 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
		$ 213,678
Advances accrued		234,600
Advances reclassified as accounts payable		(64,259)
Advances repaid from proceeds of line of credit	$ 1,000,000	$ (283,492)

X

- Definition

The aggregate amount of accrued advances to be paid.

+ References

No definition available.

+ Details

Name:	alrt_AdvancesAccrued
Namespace Prefix:	alrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow from advancing money.

+ References

No definition available.

+ Details

Name:	alrt_AdvancesPayableNet
Namespace Prefix:	alrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase for additional borrowings on the credit facility during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-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=6881521&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

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

X

- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

+ Details

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