|
Debt (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 1 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Apr. 30, 2014
|
Dec. 31, 2013
|
May 31, 2013
|
Apr. 30, 2013
|
May 31, 2011
|
May 31, 2011
5.75% Senior Notes [Member]
|
Jun. 30, 2014
5.75% Senior Notes [Member]
|
Nov. 30, 2012
5.75% Senior Notes [Member]
|
Apr. 30, 2014
4.75% Percent Senior Notes [Member] [Member]
|
Jun. 30, 2014
4.75% Percent Senior Notes [Member] [Member]
|
|
| Debt Instrument [Line Items] | |||||||||||
| Senior notes, at par | $ 725,000 | $ 425,000 | $ 250,000 | $ 175,000 | $ 300,000 | ||||||
| Fair value of interest rate swap agreements | 9,506 | 9,576 | 8,935 | 571 | |||||||
| Debt Instrument, Interest Rate, Stated Percentage | 5.75% | 4.75% | |||||||||
| Senior notes due date | Jun. 01, 2017 | May 15, 2022 | |||||||||
| Senior notes, effective yield | 6.00% | 4.29% | |||||||||
| Derivative, Notional Amount | 300,000 | 250,000 | |||||||||
| Debt Instrument, Unamortized Premium | 5,166 | 6,052 | |||||||||
| Variable rate of swap, percentage | 3.73% | 2.52% | |||||||||
| Revolving credit facility, maximum borrowing capacity | 500,000 | 350,000 | |||||||||
| Revolving credit agreement | 70,000 | 150,000 | |||||||||
| Line of Credit Facility, Covenant Terms | The agreement contains non-financial and financial covenants, including requirements of minimum fixed charge coverage ratios, maximum debt-to-EBITDA ratios and minimum tangible net worth. The Company is required to not exceed a maximum debt-to-EBITDA ratio of 3.0 to 1.0. | ||||||||||
| Revolving credit facility, due date | Jun. 01, 2018 | ||||||||||
| Line of Credit, Minimum carrying amount of unrestricted cash | 100,000 | ||||||||||
| Debt, Weighted Average Interest Rate | 2.50% | ||||||||||
| Letters of Credit Outstanding, Amount | 30,649 | ||||||||||
| Letters of credit bore interest | 0.46% | ||||||||||
| Guarantor Obligations, Maximum Exposure, Undiscounted | $ 159,728 |