|
Debt (Details) (USD $)
|
Mar. 31, 2015
|
Dec. 31, 2014
|
| Debt [Line Items] |
|
|
| Revolving credit agreement |
$ 19,602,000 |
$ 0 |
| Original issue premium |
6,722,000 |
7,017,000 |
| Debt, Long-term and Short-term, Combined Amount, Total |
761,324,000 |
742,017,000 |
| Obligations under capital leases |
1,007,000 |
1,110,000 |
| Debt and Capital Lease Obligations |
762,331,000 |
743,127,000 |
| Less current portion: |
532,000 |
534,000 |
| Long-term Debt, Excluding Current Maturities, Total |
761,799,000 |
742,593,000 |
| Notes due 2020 |
|
|
| Debt [Line Items] |
|
|
| Senior Notes |
$ 735,000,000 |
$ 735,000,000 |