Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 127,540	$ 135,223
Restricted cash	11,512	10,725
Short-term investments	19,443	0
Accounts receivable	26,750	33,500
Deferred income tax	0	210
Prepaid expenses and other current assets	3,245	4,219
Total current assets	188,490	183,877
Loan receivable and accrued interest	18,616	0
Investment warrants	1,960	0
Property and equipment, net of accumulated depreciation and amortization	127	272
Patents, net of accumulated amortization	86,319	162,642
Other assets	491	1,110
Total assets	296,003	347,901
Current liabilities:
Accounts payable and accrued expenses	14,283	17,347
Accrued patent investment costs	0	1,000
Royalties and contingent legal fees payable	13,908	14,878
Total current liabilities	28,191	33,225
Deferred income taxes	0	210
Other liabilities	369	311
Total liabilities	28,560	33,746
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock, par value $0.001 per share; 10,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, par value $0.001 per share; 100,000,000 shares authorized; 50,476,042 shares issued and outstanding as of December 31, 2016 and 50,651,239 shares issued and outstanding as of December 31, 2015	50	51
Treasury stock, at cost, 1,729,408 shares as of December 31, 2016 and 2015	(34,640)	(34,640)
Additional paid-in capital	642,453	633,146
Accumulated comprehensive loss	(76)	(215)
Accumulated deficit	(342,198)	(288,131)
Total Acacia Research Corporation stockholders’ equity	265,589	310,211
Noncontrolling interests in operating subsidiaries	1,854	3,944
Total stockholders’ equity	267,443	314,155
Total liabilities and stockholders' equity	$ 296,003	$ 347,901