DEFERRED CHARGES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs [Abstract]
Deferred financing costs	$ 39,660us-gaap_DeferredFinanceCostsGross	$ 36,481us-gaap_DeferredFinanceCostsGross
Deferred leasing and other costs	37,275akr_DeferredLeasingAndOtherCosts	33,664akr_DeferredLeasingAndOtherCosts
Deferred costs, gross	76,935akr_DeferredCostsGross	70,145akr_DeferredCostsGross
Accumulated amortization	(46,256)	(39,370)
Total	$ 30,679	$ 30,775

For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Name:	us-gaap_DeferredFinanceCostsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant