INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 11,315	$ 18,909
Short term bank deposits	40,613	30,767
Marketable securities	54,291	48,266
Trade receivables, net	6,709	4,068
Prepaid expenses and other current assets	2,935	4,017
Total current assets	115,863	106,027
Long term bank deposits	30,746	41,334
Severance pay fund	7,678	7,297
Deferred tax assets	1,928	1,628
Property and equipment, net	3,844	3,731
Goodwill	46,612	46,612
Intangible assets, net	3,905	4,214
Other long-term assets	3,642	1,806
Total long-term assets	98,355	106,622
Total assets	214,218	212,649
Current liabilities:
Trade payables	1,423	693
Deferred revenues	1,429	2,763
Accrued expenses and other payables	4,410	3,633
Accrued payroll and related benefits	11,516	11,894
Total current liabilities	18,778	18,983
Long term liabilities:
Accrued severance pay	8,168	7,571
Total long-term liabilities	$ 8,168	$ 7,571
Stockholders' equity:
Preferred Stock: $0.001 par value: 5,000,000 shares authorized; none issued and outstanding
Common Stock: $0.001 par value: 60,000,000 shares authorized; 23,595,160 shares issued at March 31, 2016 and December 31, 2015. 20,434,620 and 20,529,933 shares outstanding at March 31, 2016 and December 31, 2015, respectively	$ 20	$ 21
Additional paid in-capital	209,886	208,744
Treasury stock at cost (3,160,540 and 3,065,227 shares of common stock at March 31, 2016 and December 31, 2015, respectively)	(53,783)	(51,798)
Accumulated other comprehensive loss	(11)	(419)
Retained earnings	31,160	29,547
Total stockholders' equity	187,272	186,095
Total liabilities and stockholders' equity	$ 214,218	$ 212,649