Annual report pursuant to Section 13 and 15(d)

Deferred Charges and Other Assets (Parenthetical) (Detail)

v2.4.1.9
Deferred Charges and Other Assets (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Other Noncurrent Assets Disclosure [Line Items]    
Debt issue costs, accumulated amortization $ 11,045us-gaap_AccumulatedAmortizationDeferredFinanceCosts $ 5,800us-gaap_AccumulatedAmortizationDeferredFinanceCosts