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Cash and Cash Equivalents, Including Restricted Cash - Schedule of Cash and Cash Equivalents, Including Restricted Cash Balances (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 120,456	$ 52,342	$ 59,747	$ 15,423
Restricted cash	11,392	10,096
Total	131,848	62,438
Bank of America [Member] \| A-1 Credit Rating [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	120,456	52,342
Restricted cash	$ 11,392	$ 10,096

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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