Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 115,374,000	$ 147,449,000
Available for sale securities	0	245,000
Inventory	111,854,000	116,349,000
Accounts receivable, net	104,872,000	38,864,000
Prepaid expenses and other current assets	8,656,000	6,626,000
Total current assets	340,756,000	309,533,000
Property and equipment, net	9,855,000	10,380,000
Operating lease assets	28,026,000	29,038,000
Goodwill	55,053,000	55,053,000
Other intangible assets, net	282,112,000	291,212,000
Other assets	71,917,000	75,985,000
Total assets	787,719,000	771,201,000
Current liabilities:
Accounts payable	54,379,000	39,217,000
Accrued expenses and other current liabilities	124,887,000	129,071,000
Short-term deferred revenue	34,886,000	39,830,000
Total current liabilities	214,152,000	208,118,000
Deferred revenue, net of current portion	42,799,000	33,120,000
Operating lease liabilities, net of current portion	26,207,000	27,528,000
Derivative liability	1,740,000	1,650,000
Long-term debt, net	76,072,000	75,805,000
Other non-current liabilities	30,385,000	30,223,000
Total liabilities	391,355,000	376,444,000
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock $0.00001 par value, 25,000,000 shares authorized; 0 shares issued and outstanding at March 31, 2020 and December 31, 2019
Common stock $0.00001 par value; 175,000,000 shares authorized at March 31, 2020 and December 31, 2019; 130,251,440 and 121,674,568 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	1,000	1,000
Additional paid-in capital	1,251,164,000	1,188,810,000
Accumulated deficit	(854,801,000)	(794,054,000)
Total stockholders' equity	396,364,000	394,757,000
Total liabilities and stockholders' equity	$ 787,719,000	$ 771,201,000