Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 54,493	$ 81,995
Marketable securities	85,408	38,973
Accounts receivable, net of allowance for doubtful accounts of $301 and $331 at June 30, 2015 and December 31, 2014, respectively	33,405	33,167
Accounts receivable -unbilled	1,512	1,678
Prepaid royalties, net of amortization	15,607	13,030
Deferred tax assets	1,932	354
Other prepaid expenses and other current assets	6,511	5,414
Total current assets	198,868	174,611
Property and equipment:
Equipment	29,051	25,133
Leasehold improvements	5,983	5,860
Furniture and fixtures	4,730	4,554
Property and equipment, gross	39,764	35,547
Less accumulated depreciation and amortization	(28,482)	(26,105)
Total, property and equipment	11,282	9,442
Capitalized software development, net of accumulated amortization of $20,752 and $18,114 at June 30, 2015 and December 31, 2014, respectively	13,634	12,706
Goodwill	83,990	41,914
Intangible assets, net of accumulated amortization of $16,226 and $13,834 at June 30, 2015 and December 31, 2014, respectively	59,603	14,795
Non-marketable equity investments	2,756	1,757
Other assets	1,217	2,037
Total assets	371,350	257,262
Current liabilities:
Accounts payable	3,049	4,753
Accrued royalties	7,480	9,255
Accrued liabilities	9,658	7,224
Accrued compensation and related expenses	1,831	2,311
Deferred revenue	64,945	53,716
Total current liabilities	86,963	77,259
Deferred tax liabilities, noncurrent	5,654	5,838
Deferred revenue, noncurrent	4,232	3,657
Other long term liabilities	$ 2,598	$ 2,649
Commitments and contingencies
Shareholders' equity:
Common stock, no par value, 75,000 shares authorized; 31,640 and 27,677 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	$ 274,816	$ 174,926
Accumulated deficit	(2,835)	(7,030)
Accumulated other comprehensive loss	(78)	(37)
Total shareholders' equity	271,903	167,859
Total liabilities and shareholders' equity	$ 371,350	$ 257,262