Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Summary of Company's Current Debt Portfolio (Detail)

v2.4.0.6
Long-Term Debt - Summary of Company's Current Debt Portfolio (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Total debt $ 476,449 $ 479,205
Less current portion 10,000 10,000
Total long-term debt 466,449 469,205
9.125% Senior Notes, due April 2018 [Member]
   
Debt Instrument [Line Items]    
Total debt 428,949 429,205
Term Note [Member]
   
Debt Instrument [Line Items]    
Total debt $ 47,500 $ 50,000