Credit loss related to trade receivables

No definition available.

Name:	are_Creditlossrelatedtotradereceivables
Namespace Prefix:	are_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Receivables from Revenue Transactions Within Scope of Revenue Recognition

+ References

No definition available.

+ Details

Name:	are_ReceivablesFromRevenueTransactionsWithinScopeOfRevenueRecognition
Namespace Prefix:	are_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

+ Details

Name:	us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Name:	us-gaap_NewAccountingPronouncementEarlyAdoptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense related to estimated loss to be realized from lease transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Recent accounting pronouncements (Details) - USD ($)	12 Months Ended
Recent accounting pronouncements (Details) - USD ($)	Dec. 31, 2019	Jan. 01, 2020	Dec. 31, 2018
New Accounting Pronouncement
Net investment in direct financing leases	$ 39,916,000		$ 39,149,000
Provision for Lease Losses	2,200,000
Credit loss related to trade receivables	259,000
Subsequent Event
New Accounting Pronouncement
Net investment in direct financing leases		$ 37,700,000
Accounting Standards Update 2014-09 - Revenue from Contract with Customers
New Accounting Pronouncement
Receivables From Revenue Transactions Within Scope Of Revenue Recognition	$ 16,100,000