Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 146,871,000	$ 150,301,000
Marketable securities	0	14,847,000
Accounts receivable, net	107,168,000	200,634,000
Inventory	132,816,000	144,236,000
Prepaid expenses and other current assets	26,124,000	25,958,000
Total current assets	412,979,000	535,976,000
Property and equipment, net	26,455,000	36,539,000
Operating Lease, Right-of-Use Asset	33,218,000	53,121,000
Intangible assets, net	1,937,000	5,247,000
Goodwill	146,459,000	146,459,000
Other long-term assets	12,539,000	15,461,000
Total assets	633,587,000	792,803,000
Current liabilities:
Accounts payable	124,996,000	160,695,000
Accrued expenses and other current liabilities	104,026,000	141,790,000
Short-term operating lease liabilities	9,053,000	9,099,000
Deferred revenue	19,459,000	15,467,000
Total current liabilities	257,534,000	327,051,000
Long-term taxes payable	16,783,000	13,726,000
Long-term debt	156,782,000	148,810,000
Long-term operating lease liabilities	54,293,000	62,961,000
Other long-term liabilities	5,098,000	6,726,000
Total liabilities	490,490,000	559,274,000
Commitments, contingencies and guarantees
Stockholders’ equity:
Preferred Stock, Value, Outstanding	0	0
Common Stocks, Including Additional Paid in Capital	951,639,000	930,875,000
Treasury Stock, Value	(113,613,000)	(113,613,000)
Accumulated deficit	(694,929,000)	(583,733,000)
Total stockholders’ equity	143,097,000	233,529,000
Total liabilities and stockholders’ equity	$ 633,587,000	$ 792,803,000
Preferred Stock, par value (usd per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (shares)	5,000,000	5,000,000
Preferred Stock, par value (usd per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (shares)	5,000,000	5,000,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Treasury Stock, Value	$ 113,613,000	$ 113,613,000
Common Stocks, Including Additional Paid in Capital	951,639,000	930,875,000
Preferred Stock, Value, Outstanding	$ 0	$ 0
Treasury Stock, Shares (shares)	10,710,000	10,710,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Treasury Stock, Shares (shares)	10,710,000	10,710,000
Common Class A [Member]
Common stock outstanding (shares)	121,337,000	117,922,000
Common Stock, Shares Authorized (shares)	500,000,000	500,000,000
Common Stock, Shares, Issued	121,337,000	117,922,000
Common Stock, Shares Authorized (shares)	500,000,000	500,000,000
Common Stock, Shares, Issued	121,337,000	117,922,000
Common Class B [Member]
Common stock outstanding (shares)	28,887,000	28,897,000
Common Stock, Shares Authorized (shares)	150,000,000	150,000,000
Common Stock, Shares, Issued	28,887,000	28,897,000
Common Stock, Shares Authorized (shares)	150,000,000	150,000,000
Common Stock, Shares, Issued	28,887,000	28,897,000