Summary of Assets and Liabilities and Operating Results related to Three Lions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 1,229	$ 7,638	$ 1,229	$ 7,638	$ 7,267	$ 8,743
Prepaid expenses and other current assets	843		843		105
Total current assets	2,308		2,308		7,408
Non-current assets	296		296		295
Total assets	6,185		6,185		7,703
Revenue
General and administrative expenses	245	318	852	1,177
Operating loss	(245)	(318)	(852)	(1,177)
Three Lions Entertainment, LLC ("Three Lions")
Current assets:
Cash and cash equivalents	2,037		2,037
Prepaid expenses and other current assets	47		47
Total current assets	2,084		2,084
Non-current assets	786		786
Total assets	2,870		2,870
Accounts payable and other current liabilities	384		384
Total liabilities	384		384
Net assets	2,486		2,486
Revenue
General and administrative expenses			2,810
Operating loss			(2,810)
Net loss			$ (2,810)