CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 84,746	$ 95,812
Accounts receivable, net	35,420	35,423
Inventory	11,582	10,361
Prepaid expenses	4,695	5,605
Income tax receivable	9,991	10,045
Other current assets	3,530	3,371
Total current assets	149,964	160,617
Property and equipment, net	11,044	11,437
Right of use asset	3,567	3,623
Goodwill	19,976	19,976
Intangible assets, net	5,918	6,004
Other assets	344	375
Total assets	190,813	202,032
Current liabilities:
Accounts payable	6,925	8,765
Accrued compensation	16,153	18,467
Accrued expenses	30,676	30,460
Other current liabilities	1,657	1,470
Total current liabilities	55,411	59,162
Long term debt, net	47,799	47,697
Other liabilities	3,624	3,755
Total liabilities	106,834	110,614
Commitments and contingencies (Note 13)
Convertible preferred stock Series B; $0.001 par value; 100,000 shares authorized, issued and outstanding at March 31, 2021 and December 31, 2020	92,030	91,568
Stockholders' deficit
Preferred stock Series A; $0.001 par value; 5,000,000 shares authorized, 0 issued and outstanding at March 31, 2021 and December 31, 2020	0	0
Common stock; $0.001 par value; 187,500,000 shares authorized; 112,703,926 issued and 111,620,629 outstanding at March 31, 2021 and 112,703,926 issued and 110,930,243 outstanding at December 31, 2020	113	113
Additional paid-in capital	156,733	158,610
Treasury stock at cost; 1,083,297 shares at March 31, 2021 and 1,773,683 shares at December 31, 2020	(5,091)	(7,449)
Accumulated deficit	(159,806)	(151,424)
Total stockholders' deficit	(8,051)	(150)
Total liabilities, convertible preferred stock, and stockholders’ deficit	$ 190,813	$ 202,032