Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 670,292	$ 745,491
Short-term investments	168,953	179,204
Accounts receivable, less allowances of $0 and $537	19,380	28,272
Prepaid and other current assets	62,387	63,365
Total current assets	921,012	1,016,332
PROPERTY AND EQUIPMENT, NET	11,918	10,217
PATENTS, NET	447,194	436,339
DEFERRED TAX ASSETS	79,897	73,168
OTHER NON-CURRENT ASSETS	78,744	76,026
Total non-current assets	617,753	595,750
TOTAL ASSETS	1,538,765	1,612,082
CURRENT LIABILITIES:
Current portion of long-term debt	0	94,170
Accounts payable	11,394	13,393
Accrued compensation and related expenses	24,002	29,162
Deferred revenue	141,528	146,654
Taxes payable	102	51
Dividends payable	10,781	10,746
Other accrued expenses	16,123	11,382
Total current liabilities	203,930	305,558
LONG-TERM DEBT	359,119	350,588
LONG-TERM DEFERRED REVENUE	139,396	123,653
OTHER LONG-TERM LIABILITIES	45,614	46,002
TOTAL LIABILITIES	748,059	825,801
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS’ EQUITY:
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	0	0
Common Stock, $0.01 par value, 100,000 shares authorized, 71,377 and 71,268 shares issued and 30,804 and 30,701 shares outstanding	713	712
Additional paid-in capital	734,565	727,402
Retained earnings	1,413,382	1,412,779
Accumulated other comprehensive income (loss)	370	(74)
TOTAL SHAREHOLDERS’ EQUITY	2,149,030	2,140,819
Treasury stock, 40,573 and 40,567 shares of common held at cost	1,379,611	1,379,262
Total InterDigital, Inc. shareholders’ equity	769,419	761,557
Noncontrolling interest	21,287	24,724
Total equity	790,706	786,281
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 1,538,765	$ 1,612,082