CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 28,381	$ 45,118
Inventory, net	16,428	15,986
Prepaid expenses	4,620	6,673
Income tax receivable	466	454
Other current assets	7,292	5,818
Total current assets	57,187	74,049
Property and equipment, net	16,377	17,424
Right of use asset	4,075
Goodwill	19,976	19,976
Intangible assets, net	8,292	9,608
Other assets	1,535	1,787
Total assets	107,442	122,844
Current liabilities:
Accounts payable	10,691	14,864
Accrued compensation	15,523	23,024
Accrued expenses	35,737	31,842
Other current liabilities	2,396	1,817
Total current liabilities	64,347	71,547
Other liabilities	4,743	1,642
Total liabilities	69,090	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 108,871,913 outstanding at March 31, 2019 and 112,703,926 issued and 109,098,663 outstanding at December 31, 2018	113	113
Additional paid-in capital	166,296	164,744
Treasury stock at cost: 3,832,013 shares at March 31, 2019 and 3,605,263 shares at December 31, 2018	(38,224)	(38,642)
Accumulated deficit	(89,833)	(76,560)
Total stockholders’ equity	38,352	49,655
Total liabilities and stockholders’ equity	$ 107,442	$ 122,844