USE OF DERIVATIVES, OFFSETTING DISCLOSURES AND CHANGES IN OTHER COMPREHENSIVE INCOME BY COMPONENT, Changes in AOCI (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Beginning Balance |
|
|
$ 1,298,324
|
|
| Other comprehensive income (loss) before reclassifications |
$ (6,597)
|
|
(31,469)
|
|
| Amounts reclassified from accumulated other comprehensive income |
4,927
|
|
16,107
|
|
| Other comprehensive income (loss) |
(1,670)
|
$ (25,182)
|
(15,362)
|
$ (39,502)
|
| Ending Balance |
1,270,110
|
|
1,270,110
|
|
| Accumulated Other Comprehensive Income [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Beginning Balance |
122,403
|
|
136,095
|
|
| Ending Balance |
120,733
|
|
120,733
|
|
| Gains and Losses on Cash Flow Hedges [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Beginning Balance |
(61,526)
|
|
(18,434)
|
|
| Other comprehensive income (loss) before reclassifications |
12,558
|
|
(41,714)
|
|
| Amounts reclassified from accumulated other comprehensive income |
4,927
|
|
16,107
|
|
| Other comprehensive income (loss) |
17,485
|
|
(25,607)
|
|
| Ending Balance |
(44,041)
|
|
(44,041)
|
|
| Unrealized Gains and Losses on Available-for-sale Securities [Member] |
|
|
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
|
|
| Beginning Balance |
183,929
|
|
154,529
|
|
| Other comprehensive income (loss) before reclassifications |
(19,155)
|
|
10,245
|
|
| Amounts reclassified from accumulated other comprehensive income |
0
|
|
0
|
|
| Other comprehensive income (loss) |
(19,155)
|
|
10,245
|
|
| Ending Balance |
$ 164,774
|
|
$ 164,774
|
|