Derivative Instruments - Summary of Effects of Cash Flow Hedges on Consolidated Statements of Operations (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains (losses) recognized in accumulated OCI, Effective portion of change in fair value | $ 3,205 | $ (527) | $ (1,154) | $ (35,290) |
| Interest Expense [Member] | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains (losses) reclassified from accumulated OCI into income | (2,891) | (3,020) | (7,861) | (9,226) |
| Gains (losses) recognized in interest expense, ineffective portion | 329 | 365 | 252 | (147) |
| Gain (Loss) on Derivative Instruments [Member] | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains (losses) reclassified from accumulated OCI into income | $ (2,207) | $ 0 | $ (2,207) | $ 0 |