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Summary of Significant Accounting Policies and Nature of Operations - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 27, 2014
|
Sep. 28, 2013
|
Sep. 27, 2014
Segment
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Sep. 28, 2013
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Dec. 28, 2013
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Sep. 27, 2014
Website and Software Development
|
Sep. 27, 2014
Minimum
|
Sep. 27, 2014
Maximum
|
Sep. 27, 2014
AutoMD
|
Sep. 28, 2013
AutoMD
|
Sep. 27, 2014
AutoMD
|
Sep. 28, 2013
AutoMD
|
Oct. 08, 2014
Subsequent Event
AutoMD
|
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| Schedule Of Significant Accounting Policies [Line Items] | |||||||||||||
| Net loss | $ 2,494 | $ 1,399 | $ 4,473 | $ 14,309 | |||||||||
| Revenues | 67,965 | 61,724 | 212,940 | 195,018 | 80 | 69 | 223 | 262 | |||||
| Document fiscal year focus | 2014 | ||||||||||||
| Number of shares issued per agreement | 7,000,000 | ||||||||||||
| Original maturity of money market funds and short-term investments purchased | 90 days | ||||||||||||
| Other than temporary impairment charges on investments | 0 | 0 | |||||||||||
| Derivatives designated as hedging instruments in accumulated other comprehensive loss | 70 | ||||||||||||
| Reclassification of net losses from accumulated other comprehensive loss | 11 | ||||||||||||
| Recognized ineffective portion derivatives | 0 | ||||||||||||
| Expected reclassified net losses to other income/expense | 70 | ||||||||||||
| Derivative, notional value | 1,959 | 1,959 | |||||||||||
| Inventory | 44,816 | 44,816 | 36,986 | ||||||||||
| Inventory in-transit | 11,672 | 11,672 | 6,750 | ||||||||||
| Finite-lived intangible assets, useful life | 2 years | ||||||||||||
| Limited warranty description | The Company or the vendors supplying its products provide the Company’s customers limited warranties on certain products that range from 30 days to lifetime. | ||||||||||||
| Standard product warranty useful life, minimum | 1 year | ||||||||||||
| Standard product warranty useful life, maximum | 5 years | ||||||||||||
| Extended product warranty description | The product brands that include the extended warranty coverage are offered at three different service levels: (a) a five year unlimited product replacement, (b) a five year one-time product replacement, and (c) a three year one-time product replacement. | ||||||||||||
| Advertising costs | 4,458 | 4,000 | 13,860 | 12,908 | |||||||||
| Stock option grant, vesting period | 3 years | 4 years | |||||||||||
| The likeliness that the tax position will be realized upon ultimate settlement | 50.00% | ||||||||||||
| Unrecognized tax benefits, interest or penalties | $ 0 | $ 0 | $ 0 | ||||||||||
| Number of reportable segments | 2 | ||||||||||||