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Investment in Non-Consolidated Joint Venture - Components of Joint Venture Investment (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 1 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Sep. 30, 2014
Joint Venture [Member]
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Beginning Balance     $ 35,595
Dividends received   2,538 (2,538)
Our share of cumulative earnings (225) (225) 291
Ending Balance $ 33,348 $ 33,348 $ 33,348