CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 96,929	$ 45,118
Inventory, net	14,952	15,986
Prepaid expenses	2,548	6,673
Income tax receivable	534	454
Other current assets	7,537	5,818
Total current assets	122,500	74,049
Property and equipment, net	14,672	17,424
Right of use asset	3,852	0
Goodwill	19,976	19,976
Intangible assets, net	8,104	9,608
Other assets	1,206	1,787
Total assets	170,310	122,844
Current liabilities:
Accounts payable	10,792	14,864
Accrued compensation	19,210	23,024
Accrued expenses	42,817	31,842
Current portion of long term debt	3,750	0
Other current liabilities	1,534	1,817
Total current liabilities	78,103	71,547
Long term debt, net	63,071	0
Other liabilities	4,452	1,642
Total liabilities	145,626	73,189
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock; $.001 par value; 5,000,000 shares authorized and 0 shares issued and outstanding	0	0
Common stock; $.001 par value; 150,000,000 shares authorized; 112,703,926 issued and 111,548,892 outstanding at June 30, 2019 and 112,703,926 issued and 109,098,663 outstanding at December 31, 2018	113	113
Additional paid-in capital	136,298	164,744
Treasury stock at cost: 1,155,034 shares at June 30, 2019 and 3,605,263 shares at December 31, 2018	(4,684)	(38,642)
Accumulated deficit	(107,043)	(76,560)
Total stockholders' equity	24,684	49,655
Total liabilities and stockholders' equity	$ 170,310	$ 122,844