Note 12 - Notes Payable - Net Present Value of Financing Obligation (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Minimum lease payments, Total	$ 16,948
Less: Amortization of discount	(2,425)
Failed Sale- Leaseback - Financing Obligation, Total	14,523
Less: Current portion of failed sale-leaseback financing obligation payments	(494)
Net present value of failed sale-leaseback financing obligation payments, net of current portion	$ 14,029

Represents total discount on sale leaseback.

No definition available.

Name:	alti_DiscountOnSalesLeaseback
Namespace Prefix:	alti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The current portion (within one year or the normal operating cycle, if longer) related to the asset(s) sold in connection with the property sold to another party and leased back to the seller.

+ References

No definition available.

+ Details

Name:	alti_SaleLeasebackTransactionLeasePaymentsCurrent
Namespace Prefix:	alti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The net present value of leaseback payments related to the asset(s) sold in connection with the property sold to another party and leased back to the seller.

+ References

No definition available.

+ Details

Name:	alti_SaleLeasebackTransactionLeasePaymentsNetPresentValue
Namespace Prefix:	alti_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The noncurrent portion (after one year or beyond the normal operating cycle, if longer) of leaseback payments related to the asset(s) sold in connection with the property sold to another party and leased back to the seller.

+ References

No definition available.

+ Details

Name:	alti_SaleLeasebackTransactionLeasePaymentsNoncurrent
Namespace Prefix:	alti_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77914019&loc=d3e50824-112756

+ Details

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