Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Text Block [Abstract]

Schedule of prepaid royalties, future amortization expense

Amortization of these licenses is estimated as follows (in thousands):

Year Ending December 31:
2018	$	1,083
2019	675
2020	502
2021	502
2022	493
Thereafter	2,365
	$	5,620

Schedule of prepaid expenses and other current assets

Prepaid Expenses and Other Current Assets

	December 31,
	2017		2016
	(in thousands)
Prepaid service contracts – current portion	$	12,861	$	11,114
Manufacturing partners receivable	6,322		11,739
Prepaid postage	3,274		4,754
Other prepaid expenses and current assets	18,926		20,477
	$	41,383	$	48,084

Schedule of property and equipment

Property and Equipment, Net

	December 31,
	2017			2016
	(in thousands)
Manufacturing equipment	$	192,494		$	182,484
Computer equipment and software	188,593			177,525
Capitalized software and website development costs	134,585			134,427
Buildings under build-to-suit leases	56,468			56,468
Leasehold improvements	22,145			22,007
Rental equipment	19,208			18,786
Furniture and fixtures	8,255			11,057
	621,748			602,754
Less: Accumulated depreciation and amortization	(354,888		)	(318,644		)
Property and equipment, net	$	266,860		$	284,110

Schedule of intangible assets

Intangible Assets

Intangible assets are comprised of the following:

	Weighted Average Useful Life	December 31,
		2017			2016
		(in thousands)
Purchased technology	10 years	$	104,869		$	104,869
Less: accumulated amortization		(76,585		)	(69,768		)
		28,284			35,101
Customer relationships	5 years	75,146			75,146
Less: accumulated amortization		(73,759		)	(67,311		)
		1,387			7,835
Licenses and other	3 years	7,202			7,202
Less: accumulated amortization		(7,202		)	(6,718		)
		—			484
Total		$	29,671		$	43,420

Schedule of intangible assets, future amortization expense

Amortization of existing intangible assets is estimated to be as follows (in thousands):

Year Ending December 31:
2018	$	4,829
2019	3,408
2020	3,407
2021	3,407
2022	3,407
Thereafter	11,213
	$	29,671

Schedule of accrued liabilities

Accrued Liabilities

	December 31,
	2017		2016
	(in thousands)
Accrued production costs	$	37,552	$	38,755
Accrued compensation	31,331		17,066
Accrued marketing expenses	22,874		23,839
Accrued income, sales and other taxes	21,745		19,846
Capital lease obligations, current portion	16,859		16,092
Accrued other	28,887		23,271
	$	159,248	$	138,869

Schedule of other liabilities

Other Liabilities

	December 31,
	2017		2016
	(in thousands)
Financing obligations	$	53,682	$	55,355
Capital lease obligations, non-current portion	48,620		50,213
Deferred revenue, non-current portion	5,618		7,303
Deferred tax liability	1,012		20,446
Other liabilities	10,263		3,718
	$	119,195	$	137,035