Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues	$ 23,110	$ 50,484	$ 99,971	$ 149,524
Cost of revenues:
Inventor royalties	5,610	9,573	24,091	17,167
Contingent legal fees	4,024	6,607	19,056	10,355
Litigation and licensing expenses - patents	9,918	5,268	19,566	8,649
Amortization of patents	12,578	5,393	24,308	10,519
Marketing, general and administrative expenses (including non-cash stock compensation expense of $6,268 and $11,426 for the three and six months ended June 30, 2013, respectively, and $6,000 and $11,090 for the three and six months ended June 30, 2012, respectively)	13,184	11,903	27,035	25,634
Research, consulting and other expenses - business development	726	1,967	1,750	3,083
Total operating costs and expenses	46,040	40,711	115,806	75,407
Operating income (loss)	(22,930)	9,773	(15,835)	74,117
Investment Income, Interest	397	100	839	156
Gain (Loss) on Investments	3	2	851	2
Total other income (expenses)	400	102	1,690	158
Income (loss) from operations before benefit from (provision for) income taxes	(22,530)	9,875	(14,145)	74,275
Benefit from (provision for) income taxes	9,050	(3,494)	5,778	(18,241)
Net income (loss) including noncontrolling interests in operating subsidiaries	(13,480)	6,381	(8,367)	56,034
Net (income) loss attributable to noncontrolling interests in operating subsidiaries	977	(60)	977	215
Net income (loss) attributable to Acacia Research Corporation	$ (12,503)	$ 6,321	$ (7,390)	$ 56,249
Net income (loss) per common share attributable to Acacia Research Corporation:
Basic earnings (loss) per share	$ (0.26)	$ 0.13	$ (0.15)	$ 1.22
Diluted earnings (loss) per share	$ (0.26)	$ 0.13	$ (0.15)	$ 1.19
Weighted average number of shares outstanding, basic	48,008,998	47,944,193	47,934,810	46,155,846
Weighted average number of shares outstanding, diluted	48,008,998	48,938,766	47,934,810	47,208,105