Interest Rate Swaps - Total Loss Recognized Converting Variable Rates to Fixed Rates and Location of the Loss (Detail) - Interest Rate Swap - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 31, 2016 |
|
| Derivative [Line Items] | |||||
| Location of Loss Reclassified from Accumulated Other Comprehensive Income into Income | Interest expense | Interest expense | |||
| Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income | $ 802 | $ 2,313 | $ 2,704 | $ 4,604 | |
| Location of Loss Recognized in Income on Derivatives | Interest expense | Interest expense | |||
| Amount of Loss Recognized in Income on Derivatives | $ 332 | $ 1,668 | $ 332 | $ 5,210 | $ 0 |