Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents	$ 53,511	$ 38,449
Accounts receivable, net	79	76
Inventories	3,615	3,923
Interest receivable	12	6
Other current assets	7,069	6,689
Total Current Assets	64,286	49,143
Inventories	1,028	709
Property and equipment, net	5,921	4,408
Intellectual property, net	46,892	46,898
In-process research and development	17,191	16,511
Goodwill	132,394	130,869
Other long term assets	64	64
Total Assets	267,776	248,602
Current Liabilities
Accounts payable	3,140	4,450
Accrued expenses	6,663	7,395
Contingent consideration - current portion	13,300	12,500
Notes payable - current portion	7,493	6,727
Total Current Liabilities	30,596	31,072
Long Term Liabilities
Contingent consideration - less current portion	11,056	11,000
Net deferred tax liabilities	14,210	16,263
Notes payable - less current portion, net of debt discount	11,057	12,990
Total Liabilities	$ 66,919	$ 71,325
Commitments and Contingencies
Stockholders' Equity
Common stock $0.001 par value, 750,000,000 shares authorized at March 31, 2016 and December 31, 2015; 109,457,941 and 100,180,872 shares issued at March 31, 2016 and December 31, 2015, respectively; and 109,386,396 and 100,149,453 shares outstanding at March 31, 2016 and December 31, 2015, respectively	$ 109	$ 100
Additional paid-in capital	396,098	363,280
Accumulated deficit	(195,777)	(182,864)
Treasury stock at cost, 71,545 and 31,419 shares at March 31, 2016 and December 31, 2015, respectively	(203)	(73)
Accumulated other comprehensive income (loss)	630	(3,166)
Total Stockholders' Equity	200,857	177,277
Total Liabilities and Stockholders' Equity	$ 267,776	$ 248,602