Service Agreements and Related Party Transactions - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
Mar. 31, 2012	Mar. 31, 2013	Mar. 19, 2012
Related Party Transactions [Abstract]
Expenses incurred under the agreements	$ 64	$ 443	$ 0
Description of fee			Fee equal to the product of (x) the ending dollar amount of assets under management during the calendar month in question and (y) .002 divided by 12
Administrative services agreement fee			$ 110
Pro Rata Share of the Common Stock Election		10,000,000
Percentage of Pro Rata Share of the Common Stock Election		5.00%
Percentage of interest in Litigation Proceeds		50.00%

Fee equal to the product of (x) the ending dollar amount of assets under management during the calendar month in question and (y) .002 divided by 12

10,000,000

50.00%