Derivative Financial Instruments - CF Hedges (Details)
$ in Thousands |
Dec. 31, 2016
USD ($)
DerivativeInstrument
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Jun. 19, 2014
USD ($)
|
Sep. 30, 2013
USD ($)
|
Apr. 30, 2011
USD ($)
|
Oct. 31, 2009
USD ($)
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Stated interest rate (as a percent) |
|
|
6.25%
|
|
|
|
|
| Senior Notes 6.25 Percent Due 2022 |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Aggregate principal amount |
$ 375,000
|
$ 375,000
|
$ 375,000
|
$ 375,000
|
|
|
|
| Stated interest rate (as a percent) |
|
|
6.25%
|
6.25%
|
|
|
|
| Cash Flow Hedges | Working Capital Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Hedged borrowings |
300,000
|
|
|
|
|
|
|
| Cash Flow Hedges | Interest Rate Swaps |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Hedged borrowings |
$ 100,000
|
|
|
|
|
|
|
| Number of agreements in place | DerivativeInstrument |
1
|
|
|
|
|
|
|
| Cash Flow Hedges | Interest Rate Swaps | Credit Agreement Maturing 2018 [Member] |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Fixed rate (as a percent) |
|
|
|
|
1.819%
|
|
3.93%
|
| Cash Flow Hedges | Interest Rate Swaps | Credit Agreement Maturing 2018 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Hedged borrowings |
|
|
|
|
$ 100,000
|
|
$ 100,000
|
| Cash Flow Hedges | Interest Rate Cap | Credit Agreement Maturing 2018 [Member] |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Maximum cap rate (as a percent) |
|
|
|
|
|
5.50%
|
|
| Cash Flow Hedges | Interest Rate Cap | Credit Agreement Maturing 2018 [Member] | London Interbank Offered Rate (LIBOR) [Member] |
|
|
|
|
|
|
|
| Fair values of derivative financial instruments |
|
|
|
|
|
|
|
| Hedged borrowings |
|
|
|
|
|
$ 100,000
|
|