National Storage Affiliates Trust Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE - iStorage Property Management Platform Acquisition (Details)

v3.8.0.1

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE - iStorage Property Management Platform Acquisition (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 04, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 5,750	$ 5,750
Property Management Platform [Member]
Business Acquisition [Line Items]
Aggregate purchase price	$ 20,000
Tangible fixed assets acquired	400
Goodwill	5,800
Pro forma revenue			4,900	$ 6,300
Pro forma net income			$ 600	$ 700
Property Management Platform [Member] \| Trade Names [Member]
Business Acquisition [Line Items]
Trade name acquired	3,200
Property Management Platform [Member] \| Service Agreements [Member]
Business Acquisition [Line Items]
Management contract acquired	$ 10,600
Amortization period of acquired management contract asset		15 years
Line of Credit [Member] \| Revolving line of credit [Member] \| Credit Facility [Member]
Business Acquisition [Line Items]
Effective interest rate (percent)		2.96%	2.17%

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