Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 60,548	$ 65,626
Short-term investments	53,138	47,379
Accounts receivable, net	22,995	15,863
Unbilled contract receivable	17,853	51,923
Other current assets	15,084	19,150
Total current assets	169,618	199,941
Restricted cash	8,469	0
Property and equipment, net	37,586	38,855
Intangible assets, net	513,325	541,879
Goodwill	386,413	382,963
Other assets	27,892	22,798
Total assets	1,143,303	1,186,436
Current liabilities:
Accounts payable	4,239	7,531
Accrued legal fees	9,004	7,505
Accrued liabilities	29,391	29,086
Current portion of long-term debt	6,000	6,000
Deferred revenue	2,827	895
Total current liabilities	51,461	51,017
Long-term deferred tax liabilities	803	32,565
Long-term debt, net	576,345	577,239
Other long-term liabilities	17,708	17,830
Commitments and contingencies (Note 13)
Stockholders’ equity:
Preferred stock: $0.001 par value; 10,000 shares authorized and no shares issued and outstanding	0	0
Common stock: $0.001 par value; 150,000 shares authorized; 60,242 and 59,596 shares issued, respectively, and 49,418 and 48,854 shares outstanding, respectively	60	59
Additional paid-in capital	656,670	644,194
Treasury stock at cost: 10,824 and 10,742 shares of common stock at each period end, respectively	(303,365)	(300,114)
Accumulated other comprehensive loss	(110)	(148)
Retained earnings	143,731	163,794
Total stockholders’ equity	496,986	507,785
Total liabilities and stockholders’ equity	$ 1,143,303	$ 1,186,436