CONSOLIDATED AND COMBINED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Mar. 31, 2013 |
Dec. 31, 2013 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Net income (loss) |
|
$ (10,481)
|
$ 4,796
|
$ (16,357)
|
| Other comprehensive income (loss) |
|
|
|
|
| Unrealized loss on derivative contracts |
|
0
|
(1,551)
|
(1,942)
|
| Reclassification of other comprehensive loss to interest expense |
|
0
|
1,699
|
1,077
|
| Other comprehensive income (loss) |
|
0
|
148
|
(865)
|
| Comprehensive income (loss) |
|
(10,481)
|
4,944
|
(17,222)
|
| Comprehensive loss attributable to noncontrolling interests |
|
10,481
|
7,496
|
17,222
|
| Comprehensive income (loss) attributable to National Storage Affiliates Trust and NSA predecessor |
|
$ 0
|
$ 12,440
|
$ 0
|
| NSA Predecessor [Member] |
|
|
|
|
| Net income (loss) |
$ (1,253)
|
|
|
|
| Other comprehensive income (loss) |
|
|
|
|
| Unrealized loss on derivative contracts |
0
|
|
|
|
| Reclassification of other comprehensive loss to interest expense |
0
|
|
|
|
| Other comprehensive income (loss) |
0
|
|
|
|
| Comprehensive income (loss) |
(1,253)
|
|
|
|
| Comprehensive loss attributable to noncontrolling interests |
0
|
|
|
|
| Comprehensive income (loss) attributable to National Storage Affiliates Trust and NSA predecessor |
$ (1,253)
|
|
|
|