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Long-Term Debt - Interest Expense Presented in Consolidated Statements of Operations for Continuing and Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
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Dec. 31, 2013
|
Dec. 31, 2012
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|
| Debt Instrument [Line Items] | |||
| Amortization of bond issue costs | $ 2,954 | $ 3,891 | $ 2,980 |
| Interest expense and amortization of bond issue costs | 33,065 | 60,616 | 59,084 |
| Continuing Operations [Member] | |||
| Debt Instrument [Line Items] | |||
| Interest expense | 29,831 | 56,311 | 55,662 |
| Amortization of bond issue costs | 2,954 | 3,891 | 2,980 |
| Interest expense and amortization of bond issue costs | 32,785 | 60,202 | 58,642 |
| Discontinued Operations [Member] | |||
| Debt Instrument [Line Items] | |||
| Interest expense | 280 | 414 | 442 |
| Interest expense and amortization of bond issue costs | $ 280 | $ 414 | $ 442 |