Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net revenue	$ 140,705us-gaap_SalesRevenueGoodsNet	$ 138,262us-gaap_SalesRevenueGoodsNet	$ 118,913us-gaap_SalesRevenueGoodsNet
Cost of revenue	116,437us-gaap_CostOfGoodsSold	111,145us-gaap_CostOfGoodsSold	97,848us-gaap_CostOfGoodsSold
Gross margin	24,268us-gaap_GrossProfit	27,117us-gaap_GrossProfit	21,065us-gaap_GrossProfit
Operating expenses:
Sales and marketing	15,733us-gaap_SellingAndMarketingExpense	11,888us-gaap_SellingAndMarketingExpense	9,184us-gaap_SellingAndMarketingExpense
Technology and design	8,611us-gaap_ResearchAndDevelopmentExpense	6,076us-gaap_ResearchAndDevelopmentExpense	3,968us-gaap_ResearchAndDevelopmentExpense
General and administrative	8,039us-gaap_GeneralAndAdministrativeExpense	9,296us-gaap_GeneralAndAdministrativeExpense	10,001us-gaap_GeneralAndAdministrativeExpense
Acquisition-related costs	264	0	0
Total operating expenses	32,647us-gaap_OperatingExpenses	27,260us-gaap_OperatingExpenses	23,153us-gaap_OperatingExpenses
Loss from operations	(8,379)us-gaap_OperatingIncomeLoss	(143)us-gaap_OperatingIncomeLoss	(2,088)us-gaap_OperatingIncomeLoss
Gain on sale of non-marketable securities	0	0	4,021
Interest and other income (expense), net	119us-gaap_NonoperatingIncomeExpense	(24)us-gaap_NonoperatingIncomeExpense	(122)us-gaap_NonoperatingIncomeExpense
(Loss) income from continuing operations before income taxes	(8,260)	(167)	1,811
Income tax provision	12us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	6us-gaap_IncomeTaxExpenseBenefit
Net (loss) income from continuing operations	(8,272)	(167)	1,805
Discontinued operations:
(Loss) income from discontinued operations, net of tax	0	(67)	12,102
Net (loss) income	$ (8,272)us-gaap_NetIncomeLoss	$ (234)us-gaap_NetIncomeLoss	$ 13,907us-gaap_NetIncomeLoss
(Loss) income per share from continuing operations:
Basic (in dollars per share)	$ (1.24)	$ (0.03)	$ 0.28
Diluted (in dollars per share)	$ (1.24)	$ (0.03)	$ 0.28
(Loss) income per share from discontinued operations:
Basic (in dollars per share)	$ 0.00	$ (0.01)	$ 1.87
Diluted (in dollars per share)	$ 0.00	$ (0.01)	$ 1.85
Net (loss) income per share:
Basic (in dollars per share)	$ (1.24)us-gaap_EarningsPerShareBasic	$ (0.04)us-gaap_EarningsPerShareBasic	$ 2.15us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ (1.24)us-gaap_EarningsPerShareDiluted	$ (0.04)us-gaap_EarningsPerShareDiluted	$ 2.12us-gaap_EarningsPerShareDiluted
Shares used in per share calculations:
Basic (shares)	6,697	6,620	6,466
Diluted (shares)	6,697	6,620	6,556

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-Topic 225

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