Blue Nile 10-K 25 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 29, 2013	Feb. 17, 2014	Jun. 30, 2013
Document Information [Line Items]	'	'	'
Entity Registrant Name	'BLUE NILE INC	'	'
Entity Central Index Key	'0001091171	'	'
Document Type	'10-K	'	'
Document Period End Date	29-Dec-13	'	'
Amendment Flag	'false	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Current Fiscal Year End Date	'--12-29	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$463
Entity Common Stock, Shares Outstanding	'	12,772,230	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 29, 2013	Dec. 30, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$115,942	$87,017
Trade accounts receivable	3,005	2,578
Other accounts receivable	521	907
Inventories	34,530	33,270
Deferred income taxes	1,038	926
Prepaid Taxes	247	0
Prepaids and other current assets	1,318	1,229
Total current assets	156,601	125,927
Property and equipment, net	10,188	7,876
Intangible assets, net	140	195
Deferred income taxes	5,470	7,786
Note receivable	2,000	2,000
Other investments	2,280	2,000
Other assets	246	117
Total assets	176,925	145,901
Current liabilities:	'	'
Accounts payable	122,322	116,209
Accrued liabilities	10,751	12,439
Current portion of long-term financing obligation	51	60
Current portion of deferred rent	279	246
Total current liabilities	133,403	128,954
Long-term financing obligation, less current portion	574	625
Deferred rent, less current portion	2,229	2,188
Other long-term liabilities	114	25
Stockholders' equity:	'	'
Preferred stock, $0.001 par value; 5,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.001 par value; 300,000 shares authorized; 21,480 shares and 20,752 shares issued, respectively 12,932 shares and 12,503 shares outstanding, respectively	22	21
Additional paid-in capital	223,261	197,282
Accumulated other comprehensive loss	-26	-100
Retained earnings	93,758	82,883
Treasury stock, at cost; 8,548 and 8,249 shares outstanding, respectively	-276,410	-265,977
Total stockholders' equity	40,605	14,109
Total liabilities and stockholders' equity	$176,925	$145,901

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 29, 2013	Dec. 30, 2012
Stockholders' equity:	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	21,480,000	20,752,000
Common stock, shares outstanding	12,932,000	12,503,000
Treasury stock, shares outstanding	8,548,000	8,249,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Income Statement [Abstract]	'	'	'
Net sales	$450,008	$400,035	$348,013
Cost of sales	366,357	324,977	275,881
Gross profit	83,651	75,058	72,132
Selling, general and administrative expenses	69,343	62,771	55,213
Operating income	14,308	12,287	16,919
Other income, net:	'	'	'
Interest income, net	107	133	142
Other income, net	150	546	184
Total other income, net	257	679	326
Income before income taxes	14,565	12,966	17,245
Income tax expense	3,690	4,574	5,895
Net income	$10,875	$8,392	$11,350
Basic net income per share	$0.87	$0.64	$0.80
Diluted net income per share	$0.85	$0.63	$0.77

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Other Comprehensive Income (Loss), Tax [Abstract]	'	'	'
Net income	$10,875	$8,392	$11,350
Other comprehensive income (loss):	'	'	'
Foreign currency translation adjustments	74	23	-57
Total Comprehensive Income	$10,949	$8,415	$11,293

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement Of Changes In Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
In Thousands, except Share data
Stockholder's equity at period start at Jan. 02, 2011	$49,061	$20	$173,143	$63,141	($66)	($187,177)
Treasury stock at period start, shares at Jan. 02, 2011	'	'	'	'	'	-5,673,000
Stockholder's equity at period start, shares at Jan. 02, 2011	'	20,212,000	'	'	'	'
Net income	11,350	'	'	11,350	'	'
Other Comprehensive (Loss) Income	-57	'	'	'	-57	'
Tax benefit (deficiency) from exercise of stock options	771	'	771	'	'	'
Exercise of common stock options	7,171	1	7,170	'	'	'
Exercise of common stock options, shares	'	304,000	'	'	'	'
Issuance of common stock to directors	120	0	120	'	'	'
Issuance of common stock to directors, shares	'	3,000	'	'	'	'
Vesting of restricted stock units	'	0	'	'	'	'
Vesting of restricted stock units, shares	0	6,000	'	'	'	'
Stock-based compensation	6,558	'	6,558	'	'	'
Repurchase of common stock, shares	'	'	'	'	'	-1,084,000
Repurchase of common stock, value	-39,950	'	'	'	'	-39,950
Stockholder's equity at period end at Jan. 01, 2012	35,024	21	187,762	74,491	-123	-227,127
Stockholder's equity at period end, shares at Jan. 01, 2012	'	20,525,000	'	'	'	'
Treasury stock at period end, shares at Jan. 01, 2012	'	'	'	'	'	-6,757,000
Net income	8,392	'	'	8,392	'	'
Other Comprehensive (Loss) Income	23	'	'	'	23	'
Tax benefit (deficiency) from exercise of stock options	-2,567	'	-2,567	'	'	'
Exercise of common stock options	6,867	0	6,867	'	'	'
Exercise of common stock options, shares	'	221,000	'	'	'	'
Issuance of common stock to directors	120	0	120	'	'	'
Issuance of common stock to directors, shares	'	3,000	'	'	'	'
Vesting of restricted stock units	0	'	'	'	'	'
Vesting of restricted stock units, shares	0	3,000	'	'	'	'
Stock-based compensation	5,100	'	5,100	'	'	'
Repurchase of common stock, shares	'	'	'	'	'	-1,492,000
Repurchase of common stock, value	-38,850	'	'	'	'	-38,850
Stockholder's equity at period end at Dec. 30, 2012	14,109	21	197,282	82,883	-100	-265,977
Stockholder's equity at period end, shares at Dec. 30, 2012	'	20,752,000	'	'	'	'
Treasury stock at period end, shares at Dec. 30, 2012	8,249,000	'	'	'	'	-8,249,000
Net income	10,875	'	'	10,875	'	'
Other Comprehensive (Loss) Income	74	'	'	'	74	'
Tax benefit (deficiency) from exercise of stock options	-583	'	-583	'	'	'
Exercise of common stock options	21,377	1	21,376	'	'	'
Exercise of common stock options, shares	'	716,000	'	'	'	'
Issuance of common stock to directors	80	'	80	'	'	'
Issuance of common stock to directors, shares	'	2,000	'	'	'	'
Vesting of restricted stock units, shares	0	10,000	'	'	'	'
Stock-based compensation	5,106	'	5,106	'	'	'
Repurchase of common stock, shares	'	'	'	'	'	-299,000
Repurchase of common stock, value	-10,433	'	'	'	'	-10,433
Stockholder's equity at period end at Dec. 29, 2013	$40,605	$22	$223,261	$93,758	($26)	($276,410)
Stockholder's equity at period end, shares at Dec. 29, 2013	21,480,000	'	'	'	'	'
Treasury stock at period end, shares at Dec. 29, 2013	8,548,000	'	'	'	'	-8,548,000

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Operating activities:	'	'	'
Net income	$10,875	$8,392	$11,350
Adjustments to reconcile net income to net cash used in operating activities:	'	'	'
Depreciation and amortization	3,141	3,368	3,398
(Gain) loss on disposal of property and equipment	-7	45	35
Stock-based compensation	5,028	5,087	6,534
Deferred income taxes	2,204	1,030	-761
Tax (deficiency) benefit from exercise of stock options	-583	-2,567	771
Excess tax benefit from exercise of stock options	-361	-37	-646
Changes in assets and liabilities:	'	'	'
Receivables	-41	-323	-1,391
Inventories	-1,260	-4,003	-9,101
Prepaid federal income taxes	-247	0	0
Prepaid expenses and other assets	-218	-180	35
Accounts payable	6,432	20,392	5,207
Accrued liabilities	-1,688	3,052	-2,080
Other long-term liabilities	89	25	0
Deferred rent	74	163	2,103
Net cash provided by operating activities	23,438	34,444	15,454
Investing activities:	'	'	'
Purchases of property and equipment	-5,528	-2,525	-5,391
Purchase of other investments	-280	-2,000	0
Payments for notes receivable	0	-2,000	0
Net cash used in investing activities	-5,808	-6,525	-5,391
Financing activities:	'	'	'
Repurchase of common stock	-10,433	-38,850	-39,950
Proceeds from stock option exercises	21,377	8,572	5,466
Excess tax benefit from exercise of stock options	361	37	646
Principal payments under long-term financing obligation	-60	-59	-52
Net cash provided by (used in) financing activities	11,245	-30,300	-33,890
Effect of exchange rate changes on cash and cash equivalents	50	7	-43
Net increase (decrease) in cash and cash equivalents	28,925	-2,374	-23,870
Cash and cash equivalents, beginning of period	87,017	89,391	113,261
Cash and cash equivalents, end of period	115,942	87,017	89,391
Supplemental disclosure of cash flow information [Abstract]	'	'	'
Cash paid for income taxes	4,965	4,121	7,363
Cash paid for interest relating to long-term financing obligation	2	3	8
Non-cash investing and financing activities [Abstract]	'	'	'
Receivable from stock option exercises	0	0	1,705
Payable for purchases of property and equipment	$7	$325	$98

Description_Of_the_Company_And

Description Of the Company And Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 29, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Description Of the Company And Summary Of Significant Accounting Policies [Text Block]	'
	Description of the Company and Summary of Significant Accounting Policies
	The Company
	Blue Nile, Inc. (the “Company”) is the leading online retailer of high-quality diamonds and fine jewelry. In addition to sales of diamonds and fine jewelry, the Company provides education, guidance and support to enable customers to more effectively learn about and purchase diamonds and fine jewelry. The Company, a Delaware corporation, based in Seattle, Washington, was formed in March 1999. The Company serves consumers in over 40 countries and territories all over the world through its website at www.bluenile.com.
	Fiscal Year
	The Company’s fiscal year ends on the Sunday closest to December 31. Each fiscal year consists of four 13-week quarters, with one extra week added in the fourth quarter every five to six years. The Company's fiscal year 2014 ending January 4, 2015 will have one extra week in the fourth quarter as a result of the Company's 4-4-5 retail reporting calendar.
	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances are eliminated in consolidation.
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Some of the more significant estimates include the allowance for sales returns, accounting for income taxes, and assumptions used to determine stock-based compensation expense. Actual results could differ materially from those estimates.
	During the fiscal year ended December 29, 2013, there was a change in accounting estimate relating to our income tax expense. The Company recognized an income tax benefit resulting primarily from the domestic production activities deduction related to the current and prior tax years recorded in the fiscal year ended December 29, 2013. The out-of-period impact of this deduction decreased income tax expense and increased net income by $1.1 million and $0.08 per diluted share for the year ended December 29, 2013.
	In addition, as a result primarily of this deduction, the Company's effective tax rate decreased to 25.3% in the year-to-date ended December 29, 2013 from 35.3% in the year-to-date ended December 30, 2012.
	Foreign Currency
	The functional currency of most of the Company’s subsidiaries is the applicable local currency. Assets and liabilities have been translated to U.S. dollars using the exchange rates effective on the balance sheet dates, while income and expense accounts are translated at the average rates in effect during the periods presented. The resulting translation adjustments are recorded as a component of other comprehensive income within stockholders’ equity.
	The Company also recognizes gains and losses associated with transactions that are denominated in foreign currencies. The Company recorded a net loss resulting from foreign currency transactions of approximately $0.4 million for each of the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, within other income, net in the consolidated statements of operations.
	Concentration of Risk
	The Company maintains the majority of its cash and cash equivalents in accounts with five major financial institutions within and outside the United States, in the form of demand deposits, money market accounts, and time deposits. Deposits in these institutions may exceed the amounts of insurance provided, or deposits may not be covered by insurance. The Company has not experienced losses on its deposits of cash and cash equivalents. The Company’s trade accounts receivable are primarily derived from credit card purchases from customers and the majority are settled within two business days.
	The Company’s ability to acquire diamonds and fine jewelry is dependent on its relationships with various suppliers from whom it purchases diamonds and fine jewelry. The Company has reached agreements with certain suppliers to provide access to their inventories of diamonds for its customers, but the terms of these agreements are limited and do not govern the purchase of diamonds for its inventory. Purchase concentration by major supply vendor in fiscal year ended December 29, 2013 with comparative information for fiscal years ended December 30, 2012 and January 1, 2012, is as follows:
		Year Ended
		29-Dec-13		30-Dec-12		1-Jan-12
	Vendor A	10	%	6	%	8	%
	Vendor B	5	%	4	%	7	%
	Vendor C	5	%	4	%	6	%
		20	%	14	%	21	%
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with maturities of three months or less, from the date of purchase, to be cash equivalents.
	Short-term Investments
	The Company classifies highly liquid investments with maturities greater than three months but less than one year as short-term investments.
	Inventories
	The Company’s diamond and fine jewelry inventories are valued at the lower of cost or market, using the specific identification method for diamonds and weighted average cost method for fine jewelry and watches. The Company lists loose diamonds on its website that are typically not included in inventory until the Company receives a customer order for those diamonds. Upon receipt of a customer order, the Company purchases a specific diamond and records it in inventory until it is delivered to the customer, at which time the revenue from the sale is recognized and inventory is relieved.
	To determine if the cost of the Company's inventory should be written down, current and anticipated demand, customer preferences, age of the merchandise and fashion trends are considered. This write-down is equal to the difference between the cost of inventory and its estimated market value. The Company did not record any significant write-downs for the fiscal years ended December 29, 2013, December 30, 2012 or January 1, 2012.
	Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation. Maintenance and repairs are expensed as incurred. Depreciation expense is calculated on a straight-line basis over the estimated useful lives of the related assets. The cost and related accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and the related gain or loss is reported in the statement of operations. Estimated useful lives by major asset category are as follows:
	Asset	Life (in years)
	Software	5-Feb
	Computers and equipment	5-Feb
	Leasehold improvements	Shorter of lease term or asset life
	Building	Shorter of lease term or asset life
	Furniture and fixtures	7-May
	Capitalized Software
	The Company capitalizes costs to develop its website and internal-use software and amortizes such costs on a straight-line basis over the estimated useful life of the software once it is available for use. Costs related to the design and maintenance of internal-use software and website development are expensed as incurred.
	Impairment of Long-Lived Assets
	The Company reviews the carrying value of its long-lived assets, including property and equipment and definite-lived intangible assets, whenever events or changes in circumstances indicate that the carrying value may not be recoverable. To the extent the estimated future cash inflows attributable to the assets, less estimated future cash outflows, are less than the carrying amount, an impairment loss would be recognized. The Company did not record an impairment loss for long-lived assets for the fiscal years ended December 29, 2013, December 30, 2012 or January 1, 2012.
	Intangible Assets
	Intangible assets are recorded at cost and consist primarily of the costs incurred to acquire licenses and other similar agreements with finite lives. The gross carrying amount of these licenses was approximately $0.5 million at both December 29, 2013 and December 30, 2012. Accumulated amortization was approximately $0.4 million at both December 29, 2013 and December 30, 2012. Amortization expense was approximately $55,000 in the fiscal year ended December 29, 2013, $58,000 in the fiscal year ended December 30, 2012 and $54,000 in the fiscal year ended January 1, 2012. Amortization expense is estimated to be $37,000 in fiscal 2014, $22,000 in fiscal 2015, $19,000 in fiscal 2016, $14,000 in fiscal 2017, and $9,000 in fiscal 2018.
	Note Receivable and Other Investments
	The Company holds a minority ownership of a privately-held company in the form of convertible preferred shares, purchased for an aggregate amount of $2.0 million, which we account for under the cost method of accounting.
	The Company holds a $2.0 million note receivable (the "Note") from the same privately-held company. The interest rate changes over the term of the Note to LIBOR plus a predetermined rate per annum. The Note is recorded at its face amount on the Company's condensed consolidated balance sheet.
	On July 5, 2013, the Company purchased, for $280,000, a minority ownership in another privately-held company in the form of common stock and warrants, which we account for under the cost method of accounting.
	The Company reviews the investments for impairment when events and circumstances indicate that the decline in fair value of the asset below the carrying value is other-than-temporary. This evaluation consists of several qualitative and quantitative factors regarding the severity and duration of the unrealized loss as well as the Company's ability and intent to hold the investment until a forecasted recovery occurs. Additionally, the Company assesses whether it has plans to sell the security or it is more likely than not that the Company will be required to sell the investment before recovery of its amortized cost basis. Factors considered include recent and projected financial results and operating trends; publicly available information that may affect the value of the investment; duration and severity of the decline in value; and our strategy and intentions for holding the investment.
	Fair Value of Financial Instruments
	The carrying amounts for the Company’s cash, cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate fair value due to their short maturities.
	Treasury Stock
	Treasury stock is recorded at cost and consists primarily of the repurchase of the Company’s common stock in the open market.
	Income Taxes
	Deferred tax assets and liabilities are determined based on the differences between financial reporting and tax bases of assets and liabilities and are measured using the tax rates that will be in effect when the differences are expected to reverse. Future tax benefits, such as return reserves, are recognized to the extent that realization of such benefits is considered to be more likely than not.
	The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. The Company considers many factors when evaluating and estimating tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. If applicable, interest and penalties related to unrecognized tax benefits are included in the provision for income taxes.
	Revenue Recognition
	Net sales consist of products sold via the Internet and shipping revenue, net of estimated returns and promotional discounts and excluding sales taxes. The Company recognizes revenue when all of the following have occurred: persuasive evidence of an agreement with the customer exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable and collectability of the selling price is reasonably assured. The Company evaluates whether it is appropriate to record the gross amount of product sales and related costs or the net amount earned. Revenue is recorded at the gross amount when the Company is the primary obligor, is subject to inventory and credit risk, has latitude in establishing price and product specification, or has most of these indicators. When the Company is not primarily obligated and has no latitude in establishing the price, revenue will be recorded at the net amount earned.
	The Company requires payment at the point of sale. Amounts received before the customer assumes the risk of loss are not recorded as revenue. For sales to customers in the U.S., Canada, E.U., and the United Arab Emirates (the "U.A.E."), the Company recognizes revenue when delivery has occurred, which is typically one to three days after shipment. For international sales, other than to Canada, E.U., and the U.A.E., revenue is recognized upon shipment as this is when risk of loss transfers. The Company generally offers a return policy of 30 days and provides an allowance for sales returns during the period in which the sales are made. For both December 29, 2013 and December 30, 2012, the reserve for sales returns was $1.4 million and was recorded as an accrued liability. Sales and cost of sales reported in the consolidated statements of operations are reduced to reflect estimated returns. The estimates are based on the Company’s historical product return rates and current economic conditions.
	In 2011, the Company began offering a lifetime diamond upgrade program on all certified diamonds purchased since January 1, 2011. In November 2013, the Company expanded the diamond upgrade program to include all certified diamonds purchased since the Company's inception. This is accounted for as a guarantee and at December 29, 2013 and December 30, 2012, the estimated the fair value of the guarantee is inconsequential.
	The Company generally does not extend credit to customers, except through third party credit cards. The majority of sales are through credit cards, and trade accounts receivable are composed primarily of amounts due from financial institutions related to credit card sales. The Company does not maintain an allowance for doubtful accounts because payment is typically received within two business days after the sale is complete.
	Shipping and Handling Costs
	The Company’s shipping and handling costs primarily include payments to third-parties for shipping merchandise to the Company’s customers. Shipping and handling costs of approximately $4.6 million, $4.5 million and $4.2 million in the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, respectively, were included in cost of sales.
Cost of Sales
Cost of sales consists of the cost of merchandise sold to customers, inbound and outbound shipping costs, insurance on shipments, the costs incurred to set diamonds into ring, earring and pendant settings, including labor and related facility costs, and depreciation on assembly related property, plant and equipment.
Selling, General and Administrative Expenses
Selling, general and administrative expenses consist primarily of payroll and related benefit costs for the Company’s employees, marketing costs, stock-based compensation and credit card fees. These expenses also include certain facility-related costs, and fulfillment, customer service, technology and depreciation expenses, as well as professional fees and other general corporate expenses.
Fulfillment costs include costs incurred in operating and staffing the fulfillment center, including costs attributable to receiving, inspecting and warehousing inventories and picking, packaging and preparing customers’ orders for shipment. Fulfillment costs in the years ended December 29, 2013, December 30, 2012 and January 1, 2012 were approximately $3.6 million, $3.7 million and $3.5 million, respectively.
Marketing
Marketing costs are expensed as incurred. Costs associated with web portal advertising contracts are amortized over the period such advertising is expected to be used. Costs of advertising associated with radio, print and other media are expensed when such services are used. Marketing expense for the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012 was approximately $24.3 million, $21.0 million and $16.9 million, respectively.
Stock-Based Compensation
The Company measures compensation cost for all stock options and restricted stock units granted based on fair value on the measurement date, which is typically the grant date. The fair value of each stock option granted is estimated on the grant date using the Black-Scholes-Merton option valuation model. The fair value of each restricted stock unit ("RSU") is based on the fair market value of the Company’s common stock on the date of the grant. Stock-based compensation expense is recognized on a straight-line basis over the requisite service period for each stock option or restricted stock unit grant expected to vest with forfeitures estimated at the date of grant based on the Company’s historical experience and future expectations.

Inventories

Inventories	12 Months Ended
	Dec. 29, 2013
Inventory Disclosure [Abstract]	'
Inventories [Text Block]	'
	Inventories
	Inventories consist of the following (in thousands):
		December 29,		December 30,
		2013		2012
	Loose diamonds	$	3,321	$	1,583
	Fine jewelry and other	31,209		31,687
		$	34,530	$	33,270

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 29, 2013
Property and Equipment [Abstract]	'
Property, Plant and Equipment Disclosure [Text Block]	'
	Property and Equipment
	Property and equipment consist of the following (in thousands):
		December 29,			December 30,
		2013			2012
	Computers and equipment	$	4,325		$	4,275
	Software and website development	16,296			12,491
	Leasehold improvements	6,654			5,902
	Furniture and fixtures	1,255			976
	Building	940			940
		29,470			24,584
	Less: accumulated depreciation and amortization	(19,282		)	(16,708		)
	Property and equipment, net	$	10,188		$	7,876
	Total depreciation expense was approximately $3.1 million, $3.3 million, and $3.3 million for the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, respectively.
	Capitalized software costs include external direct costs and internal direct labor and related employee benefits costs of developing software for internal use. Amortization begins in the period in which the software is ready for its intended use. The Company had approximately $4.9 million and $2.7 million of unamortized computer software and website development costs at December 29, 2013 and December 30, 2012, respectively. Depreciation and amortization expense of capitalized software and website development costs was approximately $1.6 million, $2.0 million and $1.9 million in the fiscal years ended December 29, 2013,  December 30, 2012 and January 1, 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 29, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	Commitments and Contingencies
	Leases
	The Company leases its office and warehouse facilities and some equipment under non-cancelable lease agreements with initial terms that generally range from one to eleven years. Some of the leases include renewal provisions at the Company’s option. At the inception of the lease, the Company evaluates each agreement to determine whether the lease will be accounted for as an operating or capital lease. The term of the lease used for this evaluation includes renewal option periods only in instances in which the exercise of the renewal option can be reasonably assured and failure to exercise such option would result in an economic penalty. Some of the office leases contain rent escalation clauses and rent holidays. Rent expense is recorded on a straight-line basis over the lease term with the difference between the rent paid and the straight-line rent expense recorded as a deferred rent liability. Lease incentive payments received from the landlord are recorded as deferred rent liabilities and are amortized on a straight-line basis over the lease term as a reduction in rent. For both December 29, 2013 and December 30, 2012, the deferred rent balance related to lease incentives was approximately $1.9 million.
	During 2007, the Company made tenant improvements to its U.S. fulfillment center. Due to its financial involvement in the construction of the leased property, the Company recorded the building as property and equipment during the construction period. Upon completion, the transaction did not meet the criteria for sale-leaseback accounting, and accordingly, has been recorded as a long-term financing obligation.
	Future minimum lease payments at December 29, 2013 are as follows (in thousands):
		Financing			Operating
		Obligation			Leases
	2014	$	51		$	1,414
	2015	—			1,323
	2016	—			1,170
	2017	—			1,071
	2018	—			1,087
	Thereafter	—			3,148
	Total minimum lease payments	51			$	9,213
	Less: amounts representing interest	—
	Present value of minimum lease payments	51
	Residual value	574
	Less: current maturities	(51		)
	Total long-term financing obligation less current maturities	$	574
	Assets under the long-term financing obligation amounted to $0.6 million at December 29, 2013 and $0.7 million at December 30, 2012. These amounts are net of accumulated depreciation of approximately $0.3 million as of December 29, 2013 and December 30, 2012. Such assets are classified within property and equipment, net, in the accompanying balance sheets. The residual value of the long-term financing obligation represents the estimated fair value of the financing at the end of the Company’s lease term. Rent expense, which includes certain common area maintenance costs, was approximately $1.0 million, $0.8 million and $0.9 million for the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, respectively.
	Legal Proceedings
	In the ordinary course of business, the Company may be subject from time to time to various proceedings, lawsuits, disputes or claims. Although the Company cannot predict with assurance the outcome of any litigation, it does not believe there are currently any such actions that, if resolved unfavorably, would have a material impact on the Company’s financial condition or results of operations.

Preferred_Stock

Preferred Stock	12 Months Ended
	Dec. 29, 2013
Preferred Stock [Abstract]	'
Preferred Stock [Text Block]	'
	Preferred Stock
	The Company has 5,000,000 shares of undesignated preferred stock authorized for future issuance. Shares of preferred stock may be issued from time to time in one or more series, with designations, preferences, and limitations established by the Company’s board of directors.

Stockbased_Compensation

Stock-based Compensation	12 Months Ended
	Dec. 29, 2013
Stock-Based Compensation [Abstract]	'
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	'
	Stock-Based Compensation
	Stock Option Plans
	As of December 29, 2013, with the addition of the 2013 Plan, the Company has a total of five equity plans.
	The Company’s 1999 Equity Incentive Plan (“1999 Plan”) provides for the grant of incentive stock options, non-statutory stock options, stock bonuses and restricted stock awards, which may be granted to employees, including officers, non-employee directors and consultants. As of May 19, 2004, the effective date of the Company’s initial public offering, no additional awards were granted under the 1999 Plan.
	The Company’s 2004 Equity Incentive Plan (“2004 Plan”) provides for the grant of non-statutory stock options, restricted stock awards, stock appreciation rights, RSUs and other forms of equity compensation, which may be granted to employees, including officers, non-employee directors and consultants. Upon the effectiveness of the 2013 Plan (as defined below), the 2004 Plan was suspended and any equity compensation that would have been granted under the 2004 Plan was thereafter granted under the 2013 Plan.
	The Company’s 2004 Non-Employee Directors’ Stock Option Plan (“Directors’ Plan”) provides for the automatic grant of non-statutory stock options to purchase shares of common stock to non-employee directors. In April 2012, the Directors' Plan was suspended; therefore, any equity compensation that would have been granted under the Directors' Plan is now granted under the 2004 Plan. Upon the effectiveness of the 2013 Plan, any equity compensation that would have been granted under the Directors' Plan is now granted under the 2013 Plan.
	On May 21, 2013, the date of the Company's 2013 Annual Meeting of Stockholders (the "Annual Meeting"), the Company's stockholders approved the 2013 Equity Incentive Plan (the “2013 Plan”), effective as of such date. The 2013 Plan is intended to be the successor to the 2004 Plan and the Directors' Plan. Once the 2013 Plan became effective, the 2004 Plan was suspended and any equity compensation that would have been granted under the 2004 Plan is now granted under the 2013 Plan. The Directors' Plan was suspended in April 2012 and no equity compensation has been granted under the Directors' Plan since that date. The 2013 Plan provides for the grant of incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance stock awards, performance cash awards and other stock awards. Any equity compensation that would have been granted under the Directors' Plan, or subsequently under the 2004 Plan is now granted under the 2013 Plan. As of December 29, 2013, there were 1,014,962 shares of common stock reserved for future grants under the 2013 Plan.
	The majority of options granted generally provide for 25% vesting on the first anniversary from the date of grant with the remainder vesting monthly over the subsequent three years and expire 10 years from the date of grant. Nearly all outstanding stock options are non-qualified stock options. RSUs generally vest 25% on the first anniversary from the date of grant with the remaining vesting quarterly over three years.
	Employee Stock Purchase Plans
	In April 2004, the Company adopted the 2004 Employee Stock Purchase Plan (the “Purchase Plan”). As of December 29, 2013, 1,000,000 shares of common stock are authorized to be sold under the Purchase Plan. Commencing on the first day of the fiscal year in which the Company first makes an offering under the Purchase Plan, this amount will be increased annually for 20 years. The increase in amount is the lesser of 320,000 shares or one and one half percent of the number of shares of common stock outstanding on each such date, unless a lower number of shares is approved by the board of directors. The Purchase Plan is intended to qualify as an “employee stock purchase plan” within the meaning of Section 423 of the Internal Revenue Code. As of December 29, 2013, no shares of common stock have been offered for sale under the Purchase Plan.
	Option Grants to Non-Employees
	The Company accounts for equity instruments issued to non-employees at their fair value on the measurement date.
	Stock-Based Compensation Expense
	The following weighted average assumptions were used for the valuation of stock options granted during the periods presented:
		Year Ended
		December 29,				December 30,				January 1,
		2013				2012				2012
	Expected term	4.5 years				4.3 years				4.0 years
	Expected volatility	56.9		%		58.9		%		58.5		%
	Expected dividend yield	0		%		0		%		0		%
	Risk-free interest rate	0.9		%		0.7		%		0.9		%
	Estimated weighted average fair value per option granted	$	14.68			$	15.45			$	20.54
	•	Expected Term — This is the estimated period of time until exercise and is based primarily on historical experience for options with similar terms and conditions, giving consideration to future expectations. The Company also considers the expected terms of other companies that have similar contractual terms, expected stock volatility and employee demographics.
	•	Expected Volatility — This is based on the Company’s historical stock price volatility commensurate with the expected term of the options on the date of grant.
	•	Expected Dividend Yield — The Company has not paid dividends in the past and does not expect to pay dividends in the near future.
	•	Risk-Free Interest Rate — This is the rate on nominal U.S. Government Treasury Bills with lives commensurate with the expected term of the options on the date of grant.
	The assumptions used to calculate the fair value of options granted are evaluated and revised, as necessary, to reflect market conditions and the Company’s experience.
	The following table represents total stock-based compensation expense recognized in the consolidated financial statements (in thousands):
			Year Ended
			December 29,				December 30,				January 1,
			2013				2012				2012
	Stock-based compensation expense in selling, general and administrative expenses		$	4,860			$	4,867			$	6,322
	Stock-based compensation expense in cost of sales		88				100				92
	Total stock-based compensation expense in the consolidated statements of operations		$	4,948			$	4,967			$	6,414
	Total related tax benefit		$	1,732			$	1,753			$	2,194
	Stock-based compensation capitalized		$	158			$	133			$	144
	Stock-based compensation capitalized is included in property and equipment, net, in the consolidated balance sheets as a component of the cost capitalized for website development and the development of software for internal use. As of December 29, 2013, the Company had total unrecognized compensation costs related to unvested stock options and RSUs of approximately $7.8 million, before income taxes. The Company expects to recognize this cost over a weighted average period of 2.26 years for the options and 2.96 years for the RSUs.
	The following summarizes all stock option transactions from January 3, 2011 through December 29, 2013:
		Options			Weighted average				Weighted average		Total
					exercise price				remaining		intrinsic value
									contractual term
		(In thousands)							(In years)		(In thousands)
	Balance, January 3, 2011	2,445			$	38.04
	Granted	436			45.51
	Exercised	(304	)		23.57
	Canceled	(186	)		43.54
	Balance, January 1, 2012	2,391			40.82
	Granted	432			33.15
	Exercised	(220	)		31.15
	Canceled	(404	)		50.26
	Balance, December 30, 2012	2,199			38.55
	Granted	117			31.67
	Exercised	(716	)		29.88
	Canceled	(107	)		41.83
	Balance, December 29, 2013	1,493			$	41.93			6.14		$	15,022
	Vested and expected to vest at December 29, 2013	1,446			$	42.17			6.07		$	14,382
	Exercisable at December 29, 2013	1,053			$	44.6			5.29		$	9,357
	The following table summarizes additional information about stock options outstanding at December 29, 2013:
		Outstanding									Exercisable
		Options			Weighted Average
					Remaining		Exercise
					Contractual		Price
	Range of Exercise Price				Life						Options		Weighted Average
								Exercise Price
	(In thousands)			(In years)						(In thousands)
$18.50 — $32.42	402			6.14		$	27.72			246		$	25.85
$32.43 — $35.55	402			7.28		33.89				200		33.76
$35.56 — $50.89	386			5.81		44.67				340		44.86
$50.90 — $94.99	303			5.06		67.93				267		69.59
	1,493			6.14		41.93				1,053		44.6
The following summarizes all RSU activity from January 3, 2011 through December 29, 2013:
	RSUs			Weighted				Weighted		Aggregate
				Average Grant				Average		Intrinsic Value
				Date Fair Value				Remaining
								Contractual
								Term
	(In thousands)							(In years)		(In thousands)
Balance, January 3, 2011	6			$	25.61
Granted	—			—
Vested	(5	)		52.53
Canceled	(1	)		49.49
Balance, January 1, 2012	—			—
Granted	6			29.67
Vested	(3	)		35.23
Canceled	—			—
Balance, December 30, 2012	3			29.67
Granted	97			32.07
Vested	(10	)		38.76
Canceled	(2	)		31.34
Balance, December 29, 2013	88			$	31.01			1.32		$	4,184
Vested and expected to vest at December 29, 2013	77			$	36.37			1.19		$	3,666
The aggregate intrinsic value in the tables above are before applicable income taxes and represent the amount recipients would have received if all stock options had been exercised or RSUs had been released on the last business day of the period indicated, based on the closing stock price of the Company's common stock on such date.
The total intrinsic value of options exercised were approximately $7.3 million, $1.6 million and $5.9 million in the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, respectively. During the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, the total fair value of options vested was approximately $4.9 million, $4.6 million and $6.4 million, respectively.

Common_Stock

Common Stock	12 Months Ended
	Dec. 29, 2013
Common Stock [Abstract]	'
Treasury Stock [Text Block]	'
	Common Stock
	On October 28, 2013, the Company’s board of directors authorized the repurchase of up to $100.0 million of the Company's common stock within the 24-month period following the approval date of the stock repurchase program. No shares have been repurchased under this authorization during the fiscal year ended December 29, 2013. In the fiscal year ended December 29, 2013, the Company repurchased 299,240 shares of its common stock for an aggregate purchase price of approximately $10.4 million under a previous repurchase authorization that has since expired. In the fiscal year ended December 30, 2012, the Company repurchased 1.5 million shares of the Company’s common stock for an aggregate purchase price of approximately $38.9 million under the same previous repurchase authorization that has since expired.

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
	Dec. 29, 2013
Employee Benefit Plan [Abstract]	'
Compensation and Employee Benefit Plans [Text Block]	'
	Employee Benefit Plan
	The Company has a defined contribution plan pursuant to Section 401(k) of the Internal Revenue Code covering all eligible officers and employees. The Company provides a discretionary matching contribution, which has generally been $0.50 for every $1.00 contributed by the employee up to 4% of each employee’s salary. Such contributions were approximately $0.3 million for each of the fiscal years ended December 29, 2013 and December 30, 2012 and $0.2 million for the fiscal year ended January 1, 2012.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 29, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	Income Taxes
	The expense for income taxes consists of the following (in thousands):
		Year Ended
		December 29, 2013				December 30, 2012				January 1, 2012
	Current income tax expense	$	2,069			$	6,111			$	5,885
	Tax (deficiency) benefit from stock based compensation recorded in equity	(583		)		(2,567		)		771
	Deferred income tax expense (benefit)	2,204				1,030				(761		)
	Total income tax expense	$	3,690			$	4,574			$	5,895
	A reconciliation of the statutory Federal income tax rate to the effective tax rate is as follows:
		Year Ended
		29-Dec-13			30-Dec-12			1-Jan-12
	Statutory federal income tax rate	35	%		35	%		35	%
	Domestic production activities deduction	(7.8	)%		—	%		—	%
	Other, net	(1.9	)%		0.3	%		(0.8	)%
	Effective tax rate	25.3	%		35.3	%		34.2	%
	Deferred income taxes reflect the net tax effect of temporary differences between amounts recorded for financial reporting purposes and amounts used for tax purposes. The major components of deferred tax assets are as follows (in thousands):
		December 29,				December 30,
		2013				2012
	Deferred tax assets:
	Current:
	Reserves and allowances	$	804			$	722
	Deferred rent	96				86
	Inventory	261				295
	Other	190				141
	Noncurrent:
	Stock-based compensation	7,174				8,657
	Deferred rent	768				656
	Financing obligation	201				219
	Other	255				243
	Gross deferred tax assets	$	9,749			$	11,019
	Valuation allowance	(36		)		(27		)
	Gross deferred tax assets, net of valuation allowance	$	9,713			$	10,992
	Deferred tax liabilities:
	Current:
	Prepaid expenses	$	(295	)		$	(301	)
	Other	(18		)		(17		)
	Noncurrent:
	Leased building	(216		)		(234		)
	Excess of book over tax depreciation and amortization	(2,676		)		(1,728		)
	Gross deferred tax liabilities	(3,205		)		(2,280		)
	Net deferred tax assets	$	6,508			$	8,712
	At December 29, 2013, the Company had foreign net operating loss carryforwards for income tax purposes of approximately $0.1 million. If not utilized the foreign net operating loss carryforwards will begin to expire in 2018.
	The Company had a valuation allowance of $36,000 and $27,000 at December 29, 2013 and December 30, 2012, respectively. The valuation allowance relates to foreign net operating losses that would be realizable only upon the generation of future taxable income in the jurisdiction in which the losses were incurred.
	Prepaid income taxes were $0.2 million at December 29, 2013. Income taxes payable were $2.7 million at December 30, 2012 and were included in accrued liabilities.
	The Company has not provided for deferred taxes on unremitted earnings of subsidiaries outside the United States where such earnings are permanently reinvested. At December 29, 2013, unremitted earnings of foreign subsidiaries were $0.8 million. The amount of unrecognized deferred tax liability associated with these unremitted earnings is approximately $0.2 million. If these earnings were distributed in the form of dividends or otherwise, the Company would be subject to U.S. income taxes less an adjustment for applicable foreign tax credits.
	The tax benefit realized for the tax deduction from stock-based compensation totaled $2.7 million, $0.6 million, and $1.8 million for the years ended December 29, 2013, December 30, 2012, and January 1, 2012, respectively.
	As of December 29, 2013, the Company had $0.1 million of gross unrecognized tax benefits, all of which, if recognized, would affect the effective tax rate. The Company is no longer subject to U.S. federal income tax examinations by tax authorities for years before 2010. The following table summarizes the gross unrecognized tax benefits activity for the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012 (in thousands):
		Year Ended
		December 29,				December 30,				January 1,
		2013				2012				2012
	Unrecognized tax benefits - beginning balance	$	—			$	—			$	—
	Increase related to current year tax positions	86				—				—
	Unrecognized tax benefits - ending balance	$	86			$	—			$	—

Income_Per_Share

Income Per Share	12 Months Ended
	Dec. 29, 2013
Earnings Per Share [Abstract]	'
Net Income Per Share [Text Block]	'
	Income Per Share
	Basic net income per share is based on the weighted average number of common shares outstanding. Diluted net income per share is based on the weighted average number of common shares and common share equivalents outstanding. Common share equivalents included in the computation represent shares issuable upon assumed exercise of outstanding stock options and conversion of unvested restricted stock units except when the effect of their inclusion would be antidilutive.
	The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):
		Year Ended
		December 29,			December 30,			January 1,
		2013			2012			2012
	Net income	$	10,875		$	8,392		$	11,350
	Weighted average common shares outstanding	12,540			13,204			14,182
	Basic net income per share	$	0.87		$	0.64		$	0.8
	Dilutive effect of stock options and restricted stock units	220			223			493
	Common stock and common stock equivalents	12,760			13,427			14,675
	Diluted net income per share	$	0.85		$	0.63		$	0.77
	The following is a summary of the securities outstanding during the respective periods that have been excluded from the calculations because the effect on net income per share would have been antidilutive (in thousands):
		Year Ended
		December 29,		December 30,			January 1,
		2013		2012			2012
	Stock options	1,193		1,337			766

Segment_Information

Segment Information	12 Months Ended
	Dec. 29, 2013
Segment Information [Abstract]	'
Segment Reporting Disclosure [Text Block]	'
	Segment and Geographic Information
	The Company’s only operating segment is online retail jewelry. The Company sells jewelry to customers within and outside the United States. No customer accounted for 10% or more of the Company’s revenues. Net sales were attributed on the basis of the country to where the product was shipped. Revenue from customers in individual foreign countries was not material to the financial statements.
	The tables below represent information by geographic area (in thousands):
		Year Ended
		December 29,		December 30,		January 1,
		2013		2012		2012
	Net sales to customers:
	United States
	Engagement	$	255,832	$	226,578	$	186,243
	Non-engagement	120,988		111,070		105,905
	Total United States	376,820		337,648		292,148
	Other countries
	Engagement	58,958		49,932		44,942
	Non-engagement	14,230		12,455		10,923
	Total other countries	73,188		62,387		55,865
	Total	$	450,008	$	400,035	$	348,013
		Year Ended
		December 29,		December 30,		January 1,
		2013		2012		2012
	Long-lived assets (net book value):
	United States	$	10,026	$	7,803	$	8,254
	Other countries	162		73		86
	Total	$	10,188	$	7,876	$	8,340

Selected_Quarterly_Financial_I

Selected Quarterly Financial Information (unaudited)	12 Months Ended
	Dec. 29, 2013
Selected Quarterly Financial Information [Abstract]	'
Quarterly Financial Information [Text Block]	'
	Selected Quarterly Financial Information (unaudited)
	Summarized quarterly financial information for fiscal years 2013 and 2012 are as follows (in thousands, except per share data):
		Q1		Q2		Q3		Q4
	2013 quarter:
	Net sales	$	97,111	$	108,014	$	98,925	$	145,958
	Gross profit	17,646		20,097		18,687		27,221
	Net income	832		2,206		2,906		4,931
	Basic net income per share	0.07		0.18		0.23		0.38
	Diluted net income per share	0.07		0.17		0.23		0.38
		Q1		Q2		Q3		Q4
	2012 quarter:
	Net sales	$	83,103	$	90,981	$	89,830	$	136,121
	Gross profit	15,278		17,191		16,930		25,659
	Net income	154		1,578		1,741		4,919
	Basic net income per share	0.01		0.11		0.14		0.39
	Diluted net income per share	0.01		0.11		0.14		0.39

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 29, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions Disclosure [Text Block]	'
	Related Party Transactions
	Mark Vadon, the Company's founder, owns a significant number of shares of zulily, Inc., (“zulily”). zulily is an online store offering daily sales of top quality apparel, gear and other products for moms, babies and kids. In addition, Michael Potter and Eric Carlborg, directors of Blue Nile, Inc., are members of zulily’s board of directors and have an ownership interest in zulily.
	The Company did not sell any products to zulily during the fiscal year ended December 29, 2013. The Company sold products to zulily of approximately $9,800 and $65,000 in fiscal years ended December 30, 2012, and January 1, 2012, respectively. At December 30, 2012, the Company had receivables due from zulily of approximately $9,800 recorded in other accounts receivable in the consolidated balance sheet.
	As set forth in Note 1, the Company has a minority ownership in two privately-held companies. The Company sold products to one entity for approximately $1.8 million for fiscal year ended December 29, 2013, $1.2 million for fiscal year ended December 30, 2012, and $1.0 million for fiscal year ended January 1, 2012 respectively. The Company had receivables due from this entity of approximately $0.8 million at December 29, 2013 and $0.2 million at December 30, 2012 recorded in trade accounts receivable in the consolidated balance sheets. The Company sold products to the other entity for approximately $0.1 million for the fiscal year ended December 29, 2013. The Company did not have any receivables due from this entity as of December 29, 2013.

Revolving_Line_of_Credit

Revolving Line of Credit	12 Months Ended
	Dec. 29, 2013
Debt Disclosure [Abstract]	'
Debt Disclosure [Text Block]	'
	Revolving Line of Credit
	On February 11, 2013, the Company entered into a Credit Agreement (the "Credit Agreement") with U.S. Bank National Association (the "Lender"). The Credit Agreement provides for a $35.0 million (the "Credit Limit") unsecured, revolving credit facility. The Credit Agreement terminates on February 11, 2014 (the "Line Termination Date"). Under the terms and conditions of the Credit Agreement, the Company may borrow from the Lender until the Line Termination Date, with the aggregate principal amounts outstanding at any one time not to exceed the Credit Limit.
	As of the December 29, 2013, the Company does not have any amounts outstanding under the Credit Agreement and is in compliance with the covenants of the Credit Agreement.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 29, 2013
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	Subsequent Events
	On February 21, 2014, the Company renewed its Credit Agreement with the Lender. The renewed Credit Agreement provides for a $40.0 million (the "New Credit Limit") unsecured, revolving credit facility (the "Renewed Revolving Loan") with a $10.0 million accordion option. Under the terms and conditions of the Credit Agreement, the Company may borrow from the Lender for one year with annual renewals at the Lender's discretion. The aggregate principal amounts outstanding at any one time shall not exceed the New Credit Limit. There is a $60,000 modification fee for the Renewed Revolving Loan. Interest on the advances is the daily reset LIBOR rate plus 1.65%.
	The Renewed Revolving Loan also includes term-out provisions. The term-out provisions include the option to term out the outstanding line balance for a term of up to five years with full amortization. Outstanding term facilities will reduce availability on the revolving line of credit. The term out option will be subject to pro forma compliance with all covenants. Advances made for the purpose of repurchases of the Company’s common stock are required to be termed out at a minimum of $5.0 million. The Company also maintains the option to term out advances for other purposes in any increment. Interest on the termed out advances shall accrue interest on a fixed or floating basis rates predetermined by the Lender and Borrower.
	Pursuant to the terms of the Credit Agreement, the Company must reduce the outstanding balance of the Renewed Revolving Loan to no more than zero for a minimum of 30 consecutive days annually. The Credit Agreement further provides that the Company maintain compliance with certain covenants, including, among other things: (1) maintenance by the Company of an IBD/EBITDA ratio of no more than 2.50 to 1; and (2) maintenance by the Company of a fixed charge coverage ratio equal to at least 1.25 to 1.

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 29, 2013
Valuation and Qualifying Accounts [Abstract]	'
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	'
	SCHEDULE II
	VALUATION AND QUALIFYING ACCOUNTS
	Description	Balance at		Charged to		Deductions (A)			Balance at
		Beginning		Revenue,					End of
		of Period		Costs or					Period
				Expenses
				(In thousands)
	Reserve for sales returns:
	Year ended:
	29-Dec-13	$	1,367	$	38,911	$	(38,892	)	$	1,386
	30-Dec-12	1,087		36,720		(36,440		)	1,367
	January 1, 2012	1,019		33,634		(33,566		)	1,087
	Reserve for fraud:
	Year ended:
	29-Dec-13	$	128	$	291	$	(278	)	$	141
	30-Dec-12	102		356		(330		)	128
	January 1, 2012	104		177		(179		)	102
	____________________
	(A)	Deductions for sales returns and fraud consist of actual sales returns and credit card charge backs in each period.

Description_Of_the_Company_And1

Description Of the Company And Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 29, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Principles Of Consolidation, Policy [Policy Text Block]	'
	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances are eliminated in consolidation.
Use Of Estimates, Policy [Policy Text Block]	'
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Some of the more significant estimates include the allowance for sales returns, accounting for income taxes, and assumptions used to determine stock-based compensation expense. Actual results could differ materially from those estimates.
	During the fiscal year ended December 29, 2013, there was a change in accounting estimate relating to our income tax expense. The Company recognized an income tax benefit resulting primarily from the domestic production activities deduction related to the current and prior tax years recorded in the fiscal year ended December 29, 2013. The out-of-period impact of this deduction decreased income tax expense and increased net income by $1.1 million and $0.08 per diluted share for the year ended December 29, 2013.
	In addition, as a result primarily of this deduction, the Company's effective tax rate decreased to 25.3% in the year-to-date ended December 29, 2013 from 35.3% in the year-to-date ended December 30, 2012.
Foreign Currency, Policy [Policy Text Block]	'
	Foreign Currency
	The functional currency of most of the Company’s subsidiaries is the applicable local currency. Assets and liabilities have been translated to U.S. dollars using the exchange rates effective on the balance sheet dates, while income and expense accounts are translated at the average rates in effect during the periods presented. The resulting translation adjustments are recorded as a component of other comprehensive income within stockholders’ equity.
	The Company also recognizes gains and losses associated with transactions that are denominated in foreign currencies. The Company recorded a net loss resulting from foreign currency transactions of approximately $0.4 million for each of the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, within other income, net in the consolidated statements of operations.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with maturities of three months or less, from the date of purchase, to be cash equivalents.
Short-Term Investments, Policy [Policy Text Block]	'
	Short-term Investments
	The Company classifies highly liquid investments with maturities greater than three months but less than one year as short-term investments.
Inventory, Policy [Policy Text Block]	'
	Inventories
	The Company’s diamond and fine jewelry inventories are valued at the lower of cost or market, using the specific identification method for diamonds and weighted average cost method for fine jewelry and watches. The Company lists loose diamonds on its website that are typically not included in inventory until the Company receives a customer order for those diamonds. Upon receipt of a customer order, the Company purchases a specific diamond and records it in inventory until it is delivered to the customer, at which time the revenue from the sale is recognized and inventory is relieved.
Property, Plant and Equipment, Policy [Policy Text Block]	'
	Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation. Maintenance and repairs are expensed as incurred. Depreciation expense is calculated on a straight-line basis over the estimated useful lives of the related assets. The cost and related accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and the related gain or loss is reported in the statement of operations. Estimated useful lives by major asset category are as follows:
	Asset	Life (in years)
	Software	5-Feb
	Computers and equipment	5-Feb
	Leasehold improvements	Shorter of lease term or asset life
	Building	Shorter of lease term or asset life
	Furniture and fixtures	7-May
Internal Use Software, Policy [Policy Text Block]	'
	Capitalized Software
	The Company capitalizes costs to develop its website and internal-use software and amortizes such costs on a straight-line basis over the estimated useful life of the software once it is available for use. Costs related to the design and maintenance of internal-use software and website development are expensed as incurred.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	'
	Impairment of Long-Lived Assets
	The Company reviews the carrying value of its long-lived assets, including property and equipment and definite-lived intangible assets, whenever events or changes in circumstances indicate that the carrying value may not be recoverable. To the extent the estimated future cash inflows attributable to the assets, less estimated future cash outflows, are less than the carrying amount, an impairment loss would be recognized.
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	'
	Intangible Assets
	Intangible assets are recorded at cost and consist primarily of the costs incurred to acquire licenses and other similar agreements with finite lives. The gross carrying amount of these licenses was approximately $0.5 million at both December 29, 2013 and December 30, 2012. Accumulated amortization was approximately $0.4 million at both December 29, 2013 and December 30, 2012. Amortization expense was approximately $55,000 in the fiscal year ended December 29, 2013, $58,000 in the fiscal year ended December 30, 2012 and $54,000 in the fiscal year ended January 1, 2012. Amortization expense is estimated to be $37,000 in fiscal 2014, $22,000 in fiscal 2015, $19,000 in fiscal 2016, $14,000 in fiscal 2017, and $9,000 in fiscal 2018.
Receivables and Other Investments, Policies [Policy Text Block]	'
	Note Receivable and Other Investments
	The Company holds a minority ownership of a privately-held company in the form of convertible preferred shares, purchased for an aggregate amount of $2.0 million, which we account for under the cost method of accounting.
	The Company holds a $2.0 million note receivable (the "Note") from the same privately-held company. The interest rate changes over the term of the Note to LIBOR plus a predetermined rate per annum. The Note is recorded at its face amount on the Company's condensed consolidated balance sheet.
	On July 5, 2013, the Company purchased, for $280,000, a minority ownership in another privately-held company in the form of common stock and warrants, which we account for under the cost method of accounting.
	The Company reviews the investments for impairment when events and circumstances indicate that the decline in fair value of the asset below the carrying value is other-than-temporary. This evaluation consists of several qualitative and quantitative factors regarding the severity and duration of the unrealized loss as well as the Company's ability and intent to hold the investment until a forecasted recovery occurs. Additionally, the Company assesses whether it has plans to sell the security or it is more likely than not that the Company will be required to sell the investment before recovery of its amortized cost basis. Factors considered include recent and projected financial results and operating trends; publicly available information that may affect the value of the investment; duration and severity of the decline in value; and our strategy and intentions for holding the investment.
Fair Value of Financial Instruments, Policy [Policy Text Block]	'
	Fair Value of Financial Instruments
	The carrying amounts for the Company’s cash, cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate fair value due to their short maturities.
Treasury Stock, Policy [Text Block]	'
	Treasury Stock
	Treasury stock is recorded at cost and consists primarily of the repurchase of the Company’s common stock in the open market.
Income Tax, Policy [Policy Text Block]	'
	Income Taxes
	Deferred tax assets and liabilities are determined based on the differences between financial reporting and tax bases of assets and liabilities and are measured using the tax rates that will be in effect when the differences are expected to reverse. Future tax benefits, such as return reserves, are recognized to the extent that realization of such benefits is considered to be more likely than not.
	The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. The Company considers many factors when evaluating and estimating tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. If applicable, interest and penalties related to unrecognized tax benefits are included in the provision for income taxes.
Revenue Recognition, Policy [Policy Text Block]	'
	Revenue Recognition
	Net sales consist of products sold via the Internet and shipping revenue, net of estimated returns and promotional discounts and excluding sales taxes. The Company recognizes revenue when all of the following have occurred: persuasive evidence of an agreement with the customer exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable and collectability of the selling price is reasonably assured. The Company evaluates whether it is appropriate to record the gross amount of product sales and related costs or the net amount earned. Revenue is recorded at the gross amount when the Company is the primary obligor, is subject to inventory and credit risk, has latitude in establishing price and product specification, or has most of these indicators. When the Company is not primarily obligated and has no latitude in establishing the price, revenue will be recorded at the net amount earned.
	The Company requires payment at the point of sale. Amounts received before the customer assumes the risk of loss are not recorded as revenue. For sales to customers in the U.S., Canada, E.U., and the United Arab Emirates (the "U.A.E."), the Company recognizes revenue when delivery has occurred, which is typically one to three days after shipment. For international sales, other than to Canada, E.U., and the U.A.E., revenue is recognized upon shipment as this is when risk of loss transfers. The Company generally offers a return policy of 30 days and provides an allowance for sales returns during the period in which the sales are made. For both December 29, 2013 and December 30, 2012, the reserve for sales returns was $1.4 million and was recorded as an accrued liability. Sales and cost of sales reported in the consolidated statements of operations are reduced to reflect estimated returns. The estimates are based on the Company’s historical product return rates and current economic conditions.
	In 2011, the Company began offering a lifetime diamond upgrade program on all certified diamonds purchased since January 1, 2011. In November 2013, the Company expanded the diamond upgrade program to include all certified diamonds purchased since the Company's inception. This is accounted for as a guarantee and at December 29, 2013 and December 30, 2012, the estimated the fair value of the guarantee is inconsequential.
	The Company generally does not extend credit to customers, except through third party credit cards. The majority of sales are through credit cards, and trade accounts receivable are composed primarily of amounts due from financial institutions related to credit card sales. The Company does not maintain an allowance for doubtful accounts because payment is typically received within two business days after the sale is complete.
Shipping and Handling Cost, Policy [Policy Text Block]	'
	Shipping and Handling Costs
	The Company’s shipping and handling costs primarily include payments to third-parties for shipping merchandise to the Company’s customers. Shipping and handling costs of approximately $4.6 million, $4.5 million and $4.2 million in the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012, respectively, were included in cost of sales.
Cost of Sales, Policy [Policy Text Block]	'
	Cost of Sales
	Cost of sales consists of the cost of merchandise sold to customers, inbound and outbound shipping costs, insurance on shipments, the costs incurred to set diamonds into ring, earring and pendant settings, including labor and related facility costs, and depreciation on assembly related property, plant and equipment.
Selling, General and Administrative Expenses, Policy [Policy Text Block]	'
	Selling, General and Administrative Expenses
	Selling, general and administrative expenses consist primarily of payroll and related benefit costs for the Company’s employees, marketing costs, stock-based compensation and credit card fees. These expenses also include certain facility-related costs, and fulfillment, customer service, technology and depreciation expenses, as well as professional fees and other general corporate expenses.
	Fulfillment costs include costs incurred in operating and staffing the fulfillment center, including costs attributable to receiving, inspecting and warehousing inventories and picking, packaging and preparing customers’ orders for shipment. Fulfillment costs in the years ended December 29, 2013, December 30, 2012 and January 1, 2012 were approximately $3.6 million, $3.7 million and $3.5 million, respectively.
Marketing, Policy [Policy Text Block]	'
	Marketing
	Marketing costs are expensed as incurred. Costs associated with web portal advertising contracts are amortized over the period such advertising is expected to be used. Costs of advertising associated with radio, print and other media are expensed when such services are used. Marketing expense for the fiscal years ended December 29, 2013, December 30, 2012 and January 1, 2012 was approximately $24.3 million, $21.0 million and $16.9 million, respectively.
Stock-Based Compensation, Policy [Policy Text Block]	'
	Stock-Based Compensation
	The Company measures compensation cost for all stock options and restricted stock units granted based on fair value on the measurement date, which is typically the grant date. The fair value of each stock option granted is estimated on the grant date using the Black-Scholes-Merton option valuation model. The fair value of each restricted stock unit ("RSU") is based on the fair market value of the Company’s common stock on the date of the grant. Stock-based compensation expense is recognized on a straight-line basis over the requisite service period for each stock option or restricted stock unit grant expected to vest with forfeitures estimated at the date of grant based on the Company’s historical experience and future expectations.

Description_Of_the_Company_And2

Description Of the Company And Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 29, 2013
Description Of the Company And Summary of Significant Accounting Policies [Abstract]	'
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	'
		Year Ended
		29-Dec-13		30-Dec-12		1-Jan-12
	Vendor A	10	%	6	%	8	%
	Vendor B	5	%	4	%	7	%
	Vendor C	5	%	4	%	6	%
		20	%	14	%	21	%
Estimated Useful Lives By Major Asset Category [Table Text Block]	'
	Asset	Life (in years)
	Software	5-Feb
	Computers and equipment	5-Feb
	Leasehold improvements	Shorter of lease term or asset life
	Building	Shorter of lease term or asset life
	Furniture and fixtures	7-May

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 29, 2013
Inventory Disclosure [Abstract]	'
Schedule of Inventory [Table Text Block]	'
		December 29,		December 30,
		2013		2012
	Loose diamonds	$	3,321	$	1,583
	Fine jewelry and other	31,209		31,687
		$	34,530	$	33,270

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 29, 2013
Property and Equipment [Abstract]	'
Property and Equipment [Table Text Block]	'
		December 29,			December 30,
		2013			2012
	Computers and equipment	$	4,325		$	4,275
	Software and website development	16,296			12,491
	Leasehold improvements	6,654			5,902
	Furniture and fixtures	1,255			976
	Building	940			940
		29,470			24,584
	Less: accumulated depreciation and amortization	(19,282		)	(16,708		)
	Property and equipment, net	$	10,188		$	7,876

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 29, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	'
		Financing			Operating
		Obligation			Leases
	2014	$	51		$	1,414
	2015	—			1,323
	2016	—			1,170
	2017	—			1,071
	2018	—			1,087
	Thereafter	—			3,148
	Total minimum lease payments	51			$	9,213
	Less: amounts representing interest	—
	Present value of minimum lease payments	51
	Residual value	574
	Less: current maturities	(51		)
	Total long-term financing obligation less current maturities	$	574

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 29, 2013
Share-based Compensation [Abstract]	'
Weighted-Average Assumptions For Valuation Of Stock Options Granted [Table Text Block]	'
		Year Ended
		December 29,				December 30,				January 1,
		2013				2012				2012
	Expected term	4.5 years				4.3 years				4.0 years
	Expected volatility	56.9		%		58.9		%		58.5		%
	Expected dividend yield	0		%		0		%		0		%
	Risk-free interest rate	0.9		%		0.7		%		0.9		%
	Estimated weighted average fair value per option granted	$	14.68			$	15.45			$	20.54
Schedule of Stock Based Compensation Expense Recognized [Table Text Block]	'
			Year Ended
			December 29,				December 30,				January 1,
			2013				2012				2012
	Stock-based compensation expense in selling, general and administrative expenses		$	4,860			$	4,867			$	6,322
	Stock-based compensation expense in cost of sales		88				100				92
	Total stock-based compensation expense in the consolidated statements of operations		$	4,948			$	4,967			$	6,414
	Total related tax benefit		$	1,732			$	1,753			$	2,194
	Stock-based compensation capitalized		$	158			$	133			$	144
Summary of Stock Options, Activity [Table Text Block]	'
		Options			Weighted average				Weighted average		Total
					exercise price				remaining		intrinsic value
									contractual term
		(In thousands)							(In years)		(In thousands)
	Balance, January 3, 2011	2,445			$	38.04
	Granted	436			45.51
	Exercised	(304	)		23.57
	Canceled	(186	)		43.54
	Balance, January 1, 2012	2,391			40.82
	Granted	432			33.15
	Exercised	(220	)		31.15
	Canceled	(404	)		50.26
	Balance, December 30, 2012	2,199			38.55
	Granted	117			31.67
	Exercised	(716	)		29.88
	Canceled	(107	)		41.83
	Balance, December 29, 2013	1,493			$	41.93			6.14		$	15,022
	Vested and expected to vest at December 29, 2013	1,446			$	42.17			6.07		$	14,382
	Exercisable at December 29, 2013	1,053			$	44.6			5.29		$	9,357
Stock Options Outstanding, range of Exercise Price [Table Text Block]	'
		Outstanding									Exercisable
		Options			Weighted Average
					Remaining		Exercise
					Contractual		Price
	Range of Exercise Price				Life						Options		Weighted Average
													Exercise Price
		(In thousands)			(In years)						(In thousands)
	$18.50 — $32.42	402			6.14		$	27.72			246		$	25.85
	$32.43 — $35.55	402			7.28		33.89				200		33.76
	$35.56 — $50.89	386			5.81		44.67				340		44.86
	$50.90 — $94.99	303			5.06		67.93				267		69.59
		1,493			6.14		41.93				1,053		44.6
Summary of Restricted Stock Units, Activity [Table Text Block]	'
		RSUs			Weighted				Weighted		Aggregate
					Average Grant				Average		Intrinsic Value
					Date Fair Value				Remaining
									Contractual
									Term
		(In thousands)							(In years)		(In thousands)
	Balance, January 3, 2011	6			$	25.61
	Granted	—			—
	Vested	(5	)		52.53
	Canceled	(1	)		49.49
	Balance, January 1, 2012	—			—
	Granted	6			29.67
	Vested	(3	)		35.23
	Canceled	—			—
	Balance, December 30, 2012	3			29.67
	Granted	97			32.07
	Vested	(10	)		38.76
	Canceled	(2	)		31.34
	Balance, December 29, 2013	88			$	31.01			1.32		$	4,184
	Vested and expected to vest at December 29, 2013	77			$	36.37			1.19		$	3,666

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 29, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
		Year Ended
		December 29, 2013				December 30, 2012				January 1, 2012
	Current income tax expense	$	2,069			$	6,111			$	5,885
	Tax (deficiency) benefit from stock based compensation recorded in equity	(583		)		(2,567		)		771
	Deferred income tax expense (benefit)	2,204				1,030				(761		)
	Total income tax expense	$	3,690			$	4,574			$	5,895
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
		Year Ended
		29-Dec-13			30-Dec-12			1-Jan-12
	Statutory federal income tax rate	35	%		35	%		35	%
	Domestic production activities deduction	(7.8	)%		—	%		—	%
	Other, net	(1.9	)%		0.3	%		(0.8	)%
	Effective tax rate	25.3	%		35.3	%		34.2	%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
		December 29,				December 30,
		2013				2012
	Deferred tax assets:
	Current:
	Reserves and allowances	$	804			$	722
	Deferred rent	96				86
	Inventory	261				295
	Other	190				141
	Noncurrent:
	Stock-based compensation	7,174				8,657
	Deferred rent	768				656
	Financing obligation	201				219
	Other	255				243
	Gross deferred tax assets	$	9,749			$	11,019
	Valuation allowance	(36		)		(27		)
	Gross deferred tax assets, net of valuation allowance	$	9,713			$	10,992
	Deferred tax liabilities:
	Current:
	Prepaid expenses	$	(295	)		$	(301	)
	Other	(18		)		(17		)
	Noncurrent:
	Leased building	(216		)		(234		)
	Excess of book over tax depreciation and amortization	(2,676		)		(1,728		)
	Gross deferred tax liabilities	(3,205		)		(2,280		)
	Net deferred tax assets	$	6,508			$	8,712
Summary of Income Tax Contingencies [Table Text Block]	'
		Year Ended
		December 29,				December 30,				January 1,
		2013				2012				2012
	Unrecognized tax benefits - beginning balance	$	—			$	—			$	—
	Increase related to current year tax positions	86				—				—
	Unrecognized tax benefits - ending balance	$	86			$	—			$	—

Income_Per_Share_Tables

Income Per Share (Tables)	12 Months Ended
	Dec. 29, 2013
Earnings Per Share [Abstract]	'
Computation Basic And Diluted Net Income Per Share [Table Text Block]	'
		Year Ended
		December 29,			December 30,			January 1,
		2013			2012			2012
	Net income	$	10,875		$	8,392		$	11,350
	Weighted average common shares outstanding	12,540			13,204			14,182
	Basic net income per share	$	0.87		$	0.64		$	0.8
	Dilutive effect of stock options and restricted stock units	220			223			493
	Common stock and common stock equivalents	12,760			13,427			14,675
	Diluted net income per share	$	0.85		$	0.63		$	0.77
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	'
		Year Ended
		December 29,		December 30,			January 1,
		2013		2012			2012
	Stock options	1,193		1,337			766

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 29, 2013
Segment Information [Abstract]	'
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	'
		Year Ended
		December 29,		December 30,		January 1,
		2013		2012		2012
	Net sales to customers:
	United States
	Engagement	$	255,832	$	226,578	$	186,243
	Non-engagement	120,988		111,070		105,905
	Total United States	376,820		337,648		292,148
	Other countries
	Engagement	58,958		49,932		44,942
	Non-engagement	14,230		12,455		10,923
	Total other countries	73,188		62,387		55,865
	Total	$	450,008	$	400,035	$	348,013
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	'
		Year Ended
		December 29,		December 30,		January 1,
		2013		2012		2012
	Long-lived assets (net book value):
	United States	$	10,026	$	7,803	$	8,254
	Other countries	162		73		86
	Total	$	10,188	$	7,876	$	8,340

Selected_Quarterly_Financial_I1

Selected Quarterly Financial Information (unaudited) (Tables)	12 Months Ended
	Dec. 29, 2013
Quarterly Financial Information (unaudited) [Abstract]	'
Schedule of Quarterly Financial Information [Table Text Block]	'
		Q1		Q2		Q3		Q4
	2013 quarter:
	Net sales	$	97,111	$	108,014	$	98,925	$	145,958
	Gross profit	17,646		20,097		18,687		27,221
	Net income	832		2,206		2,906		4,931
	Basic net income per share	0.07		0.18		0.23		0.38
	Diluted net income per share	0.07		0.17		0.23		0.38
		Q1		Q2		Q3		Q4
	2012 quarter:
	Net sales	$	83,103	$	90,981	$	89,830	$	136,121
	Gross profit	15,278		17,191		16,930		25,659
	Net income	154		1,578		1,741		4,919
	Basic net income per share	0.01		0.11		0.14		0.39
	Diluted net income per share	0.01		0.11		0.14		0.39

Description_Of_the_Company_And3

Description Of the Company And Summary Of Significant Accounting Policies (Concentration of Risk) (Details)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Concentration Risk [Line Items]	'	'	'
Concentration Risk, Percentage	20.00%	14.00%	21.00%
Vendor A [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration Risk, Percentage	10.00%	6.00%	8.00%
Vendor B [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration Risk, Percentage	5.00%	4.00%	7.00%
Vendor C [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration Risk, Percentage	5.00%	4.00%	6.00%

Description_Of_the_Company_And4

Description Of the Company And Summary Of Significant Accounting Policies (Estimated Useful Lives By Major Asset Category) (Details)	12 Months Ended
	Dec. 29, 2013
Software [Member] | Minimum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'2
Software [Member] | Maximum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'5
Computers and equipment [Member] | Minimum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'2
Computers and equipment [Member] | Maximum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'5
Leasehold improvements [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'Shorter of lease term or asset life
Building [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'Shorter of lease term or asset life
Furniture and fixtures [Member] | Minimum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'5
Furniture and fixtures [Member] | Maximum [Member]	'
Estimated Useful Lives By Major Asset Category [Line Items]	'
Property and Equipment, Estimated useful lives by major asset category	'7

Description_Of_the_Company_And5

Description Of the Company And Summary Of Significant Accounting Policies (Use of Estimates) (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Use of Estimates [Abstract]	'	'	'
Domestic Production Activities Deduction, Amount	$1.10	'	'
Deduction per diluted share amount	$0.08	'	'
Effective Income Tax Rate, Percent	25.30%	35.30%	34.20%

Description_Of_the_Company_And6

Description Of the Company And Summary Of Significant Accounting Policies (Note Receivable and Other Investments) (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Jul. 05, 2013
			Convertible Preferred Shares [Member]	Common Stock and Warrants [Member]
Investment [Line Items]	'	'	'	'
Cost Method Investments	'	'	$2,000,000	$280,000
Receivables [Abstract]	'	'	'	'
Note receivable	$2,000,000	$2,000,000	'	'
Note Receivable, Interest Rate Description	'LIBOR plus a predetermined rate per annum	'	'	'

Description_Of_the_Company_And7

Description Of the Company And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Description Of The Company And Summary Of Significant Accounting Policies (Narrative) [Abstract]	'	'	'	'
Foreign Currency Transaction Loss	$400,000	$400,000	$400,000	'
Major financial institutions holding cash and cash equivalents	5	'	'	'
Losses on deposits of cash and equivalents	0	'	'	'
Significant inventory write-down	0	0	0	'
Impairment for Long-Lived Assets	0	0	0	'
Finite-Lived Intangible Assets, Gross	500,000	500,000	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	400,000	400,000	'	'
Amortization of Intangible Assets	55,000	58,000	'	54,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	37,000	'	'	'
Finite-Lived Intangible Assets, Amortization Expense, Year Two	22,000	'	'	'
Finite-Lived Intangible Assets, Amortization Expense, Year Three	19,000	'	'	'
Finite-Lived Intangible Assets, Amortization Expense, Year Four	14,000	'	'	'
Finite-Lived Intangible Assets, Amortization Expense, Year Five	9,000	'	'	'
Revenue Recognition, Sales Returns, Reserve for Sales Returns	1,400,000	1,400,000	'	'
Shipping, Handling and Transportation Costs	4,600,000	4,500,000	'	4,200,000
Fulfillment Costs	3,600,000	3,700,000	'	3,500,000
Marketing Expense	24,300,000	21,000,000	'	16,900,000
Estimated fair value of guarantee is inconsequential	$0	$0	'	'

Inventories_Schedule_of_Invent

Inventories (Schedule of Inventories) (Details) (USD $)	Dec. 29, 2013	Dec. 30, 2012
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Loose diamonds	$3,321	$1,583
Fine jewelry and other	31,209	31,687
Total Inventories	$34,530	$33,270

Property_and_Equipment_Schedul

Property and Equipment (Schedule of Property and Equipment) (Details) (USD $)	Dec. 29, 2013	Dec. 30, 2012
In Thousands, unless otherwise specified
Property and Equipment [Abstract]	'	'
Computer and equipment	$4,325	$4,275
Software and website development	16,296	12,491
Leasehold improvements	6,654	5,902
Furniture and fixtures	1,255	976
Building	940	940
Property and Equipment, Gross	29,470	24,584
Less: accumulated depreciation and amortization	-19,282	-16,708
Property and equipment, net	$10,188	$7,876

Property_and_Equipment_Narrati

Property and Equipment (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Property and Equipment [Abstract]	'	'	'
Depreciation expense	$3.10	$3.30	$3.30
Unamortized computer software and website development costs	4.9	2.7	'
Depreciation and amortization expense of capitalized software and website development costs	$1.60	$2	$1.90

Commitments_and_Contingencies_1

Commitments and Contingencies (Schedule Of Future Minimum Lease Payments) (Details) (USD $)	Dec. 29, 2013
In Thousands, unless otherwise specified
Purchase Commitment, Excluding Long-term Commitment [Line Items]	'
2014, Financing Obligation	$51
2015, Financing Obligation	0
2016, Financing Obligation	0
2017, Financing Obligation	0
2018, Financing Obligation	0
Thereafter, Financing Obligation	0
Total minimum lease payments, Financing Obligation	51
Less: amounts representing interest, Financing obligation	0
Present value of minimum lease payments, Financing Obligation	51
Residual value, Financing Obligation	574
Less: current maturities, Financing Obligation	-51
Total long-term financing obligation less current maturities, Financing Obligation	574
2014, Operating Leases	1,414
2015, Operating Leases	1,323
2016, Operating Leases	1,170
2017, Operating Leases	1,071
2018, Operating Leases	1,087
Operating Leases, Thereafter	3,148
Total minimum lease payments, Operating Leases	$9,213

Commitments_and_Contingencies_2

Commitments and Contingencies (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Commitments and Contingencies Disclosure [Abstract]	'	'	'
Deferred rent credit related to leasehold improvements	$1.90	$1.90	'
Assets Under Long Term Financing Obligation Net	0.6	0.7	'
Accumulated Depreciation For Assets Under Long Term Financing Obligation	0.3	0.3	'
Operating Leases, Rent Expense	$1	$0.80	$0.90

Preferred_Stock_Details

Preferred Stock (Details)	Dec. 29, 2013
Preferred Stock [Abstract]	'
Undesignated preferred stock authorized for future issuance	5,000,000

Stockbased_Compensation_Weight

Stock-based Compensation (Weighted-Average Assumptions For Valuation Of Stock Options Granted) (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Share-based Compensation [Abstract]	'	'	'
Expected term	'4 years 6 months	'4 years 3 months 18 days	'4 years
Expected volatility	56.90%	58.90%	58.50%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	0.90%	0.70%	0.90%
Estimated weighted-average fair value per option granted	$14.68	$15.45	$20.54

Stockbased_Compensation_Schedu

Stock-based Compensation (Schedule of Stock-Based Compensation Expense Recognized) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	$4,948	$4,967	$6,414
Total related tax benefit	1,732	1,753	2,194
Stock-based compensation capitalized	158	133	144
Selling, general and administrative expenses [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	4,860	4,867	6,322
Cost of sales [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	$88	$100	$92

Stockbased_Compensation_Narrat

Stock-based Compensation (Narrative) (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Common Stock, Capital Shares Reserved for Future Issuance	1,014,962	'	'
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP	1,000,000	'	'
Total unrecognized compensation costs related to unvested stock options and RSUs, before income taxes	$7.80	'	'
Total intrinsic value of options exercised	7.3	1.6	5.9
Total fair value of options vested	$4.90	$4.60	$6.40
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period in which compensation costs are expected to be recognized, in years	'2 years 3 months 4 days	'	'
Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period in which compensation costs are expected to be recognized, in years	'2 years 11 months 16 days	'	'

Stockbased_Compensation_Summar

Stock-based Compensation (Summary Of Stock Option Activity) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options, Weighted average remaining contractual term (In years), Balance, December 29, 2013	'6 years 1 month 21 days	'	'
Options, Weighted average remaining contractual term (In years), Vested and expected to vest, December 29, 2013	'6 years 0 months 26 days	'	'
Options, Weighted average remaining contractual term (In years), Exercisable, December 29, 2013	'5 years 3 months 15 days	'	'
Options, Total intrinsic value, Balance, December 29, 2013	15,022	'	'
Options, Total intrinsic value, Vested and expected to vest, December 29, 2013	14,382	'	'
Options, Total intrinsic value, Exercisable, December 29, 2013	9,357	'	'
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options, Balance, Beginning	2,199	2,391	2,445
Options, Granted	117	432	436
Options, Exercised	-716	-220	-304
Options, Canceled	-107	-404	-186
Options, Balance, Ending	1,493	2,199	2,391
Options, Vested and expected to vest at December 29, 2013	1,446	'	'
Options, Exercisable, December 29, 2013	1,053	'	'
Weighted average exercise price [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options, Weighted Average Exercise Price, Balance, Beginning	38.55	40.82	38.04
Options, Weighted Average Exercise Price, Granted	31.67	33.15	45.51
Options, Weighted Average Exercise Price, Exercised	29.88	31.15	23.57
Options, Weighted Average Exercise Price, Cancelled	41.83	50.26	43.54
Options, Weighted average exercise price, Balance, Ending	41.93	38.55	40.82
Options, Weighted Average Exercise Price, Vested and expected to vest, December 29, 2013	42.17	'	'
Options, Weighted Average Exercise Price, Exercisable, December 29, 2013	44.6	'	'

Stockbased_Compensation_Range_

Stock-based Compensation (Range of Exercise Price) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'6 years 1 month 21 days
Options [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options	1,493
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'6 years 1 month 21 days
Weighted Average Exercise Price	41.93
Exercisable Options	1,053
Exercisable Weighted Average Exercise Price	44.6
Options [Member] | $18.50 - $32.42 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options	402
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'6 years 1 month 21 days
Weighted Average Exercise Price	27.72
Exercisable Options	246
Exercisable Weighted Average Exercise Price	25.85
Options [Member] | $32.43 - $35.55 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options	402
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'7 years 3 months 11 days
Weighted Average Exercise Price	33.89
Exercisable Options	200
Exercisable Weighted Average Exercise Price	33.76
Options [Member] | $35.56 - $50.89 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options	386
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'5 years 9 months 22 days
Weighted Average Exercise Price	44.67
Exercisable Options	340
Exercisable Weighted Average Exercise Price	44.86
Options [Member] | $50.90 - $94.99 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options	303
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	'5 years 0 months 22 days
Weighted Average Exercise Price	67.93
Exercisable Options	267
Exercisable Weighted Average Exercise Price	69.59

Stockbased_Compensation_Summar1

Stock-based Compensation (Summary of RSU Activity) (Details) (Restricted Stock Units (RSUs) [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
RSUs, Balance, Beginning	3	0	6
RSUs, Granted	97	6	0
RSUs, Vested	-10	-3	-5
RSUs, Canceled	-2	0	-1
RSUs, Balance, Ending	88	3	0
RSUs, Vested and expected to vest at December 29, 2013	$77	'	'
RSUs, Weighted Average Grant Date Fair Value, Balance	$29.67	$0	$25.61
RSUs, Weighted Average Grant Date Fair Value, Granted	$32.07	$29.67	$0
RSUs, Weighted Average Grant Date Fair Value, Vested	$38.76	$35.23	$52.53
RSUs, Weighted Average Grant Date Fair Value, Canceled	$31.34	$0	$49.49
RSUs, Weighted Average Grant Date Fair Value, Balance	$31.01	$29.67	$0
RSUs, Weighted Average Grant Date Fair Value, Vested and expected to vest	$36.37	'	'
RSUs, Weighted Average Remaining Contractual Term (in years), Balance, December 29, 2013	'1 year 3 months 26 days	'	'
RSUs, Weighted Average Remaining Contractual Term (in years), Vested and expected to vest at December 29, 2013	'1 year 2 months 9 days	'	'
RSUs, Aggregate Intrinsic Value, Balance, December 29, 2013	4,184	'	'
RSUs, Aggregate Intrinsic Value, Vested and expected to vest at December 29, 2013	$3,666	'	'

Common_Stock_Details

Common Stock (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Aggregate purchase price of common stock repurchased	$10,433,000	$38,850,000	$39,950,000
Common Stock [Member]	'	'	'
Stock repurchase program, authorized amount	100,000,000	'	'
2013 Plan [Member] | Common Stock [Member]	'	'	'
Repurchase of common stock, shares	0	'	'
Aggregate purchase price of common stock repurchased	0	'	'
2012 Plan [Member] | Common Stock [Member]	'	'	'
Repurchase of common stock, shares	299,240	1,500,000	'
Aggregate purchase price of common stock repurchased	$10,400,000	$38,900,000	'

Employee_Benefit_Plan_Details

Employee Benefit Plan (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Employee Benefit Plan [Abstract]	'	'	'
Employee Benefit Plan, Contributions by Employer	$0.30	$0.30	$0.20

Income_Taxes_Schedule_Of_Expen

Income Taxes (Schedule Of Expense (Benefit) For Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'
Current income tax expense	$2,069	$6,111	$5,885
Tax (deficiency) benefit from stock based compensation recorded in equity	-583	-2,567	771
Deferred income tax expense (benefit)	2,204	1,030	-761
Income tax expense	$3,690	$4,574	$5,895

Income_Taxes_Reconciliation_Of

Income Taxes (Reconciliation Of Statutory Federal Income Tax Rate To Effective Tax Rate) (Details)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Effective Income Tax Rate Reconciliation, Percent [Abstract]	'	'	'
Statutory federal income tax rate	35.00%	35.00%	35.00%
Domestic production activities deduction	-7.80%	0.00%	0.00%
Other, net	-1.90%	0.30%	-0.80%
Effective tax rate	25.30%	35.30%	34.20%

Income_Taxes_Components_Of_Def

Income Taxes (Components Of Deferred Tax Assets) (Details) (USD $)	Dec. 29, 2013	Dec. 30, 2012
In Thousands, unless otherwise specified
Components of Deferred Tax Assets and Liabilities [Abstract]	'	'
Current Deferred Tax Assets, Reserves and allowances	$804	$722
Current Deferred Tax Assets, Deferred rent	96	86
Current Deferred Tax Assets, Inventory	261	295
Current Deferred Tax Assets, Other	190	141
Noncurrent Deferred Tax Asset, Stock-based compensation	7,174	8,657
Noncurrent Deferred Tax Asset, Deferred rent	768	656
Noncurrent Deferred Tax Asset, Financing Obligation	201	219
Noncurrent Deferred Tax Asset, Other	255	243
Deferred Tax Assets, Gross	9,749	11,019
Valuation Allowance	-36	-27
Gross deferred tax assets, net of valuation allowance	9,713	10,992
Current Deferred Tax Liabilities, Prepaid Expenses	-295	-301
Current Deferred Tax Liabilities, Other	-18	-17
Noncurrent Deferred Tax Liabilities, Leased building	-216	-234
Noncurrent Deferred Tax Liabilities, Excess of book over tax depreciation and amortization	-2,676	-1,728
Gross deferred tax liabilities	-3,205	-2,280
Net deferred tax assets	$6,508	$8,712

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Income Tax Disclosure [Abstract]	'	'	'	'
Operating Loss Carryforwards	$100,000	'	'	'
Valuation Allowance	36,000	27,000	'	'
Prepaid income taxes	247,000	0	'	'
Income taxes payable	'	2,700,000	'	'
Unremitted earnings from foreign subsidiaries	800,000	'	'	'
Deferred Tax Liabilities, Undistributed Foreign Earnings	200,000	'	'	'
Tax benefit realized for the tax deduction from stock-based compensation	2,700,000	600,000	1,800,000	'
Unrecognized tax benefits	$86,000	$0	$0	$0

Income_Taxes_Unrecognized_Tax_

Income Taxes (Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Income Tax Contingency [Line Items]	'	'	'
Unrecognized tax benefits	$0	$0	$0
Unrecognized tax benefits, Increase Resulting from Current Period Tax Positions	86	0	0
Unrecognized tax benefits	$86	$0	$0

Income_Per_Share_Computation_B

Income Per Share (Computation Basic And Diluted Net Income Per Share) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Earnings Per Share [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net income	$4,931	$2,906	$2,206	$832	$4,919	$1,741	$1,578	$154	$10,875	$8,392	$11,350
Weighted average common shares outstanding	'	'	'	'	'	'	'	'	12,540	13,204	14,182
Basic net income per share	$0.38	$0.23	$0.18	$0.07	$0.39	$0.14	$0.11	$0.01	$0.87	$0.64	$0.80
Dilutive effect of stock options and restricted stock units	'	'	'	'	'	'	'	'	220	223	493
Common stock and common stock equivalents	'	'	'	'	'	'	'	'	12,760	13,427	14,675
Diluted net income per share	$0.38	$0.23	$0.17	$0.07	$0.39	$0.14	$0.11	$0.01	$0.85	$0.63	$0.77

Income_Per_Share_Narrative_Det

Income Per Share (Narrative) (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Earnings Per Share [Abstract]	'	'	'
Stock option excluded from computation of diluted net income per share	1,193	1,337	766

Segment_Information_Geographic

Segment Information (Geographic Area Sales) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	$145,958	$98,925	$108,014	$97,111	$136,121	$89,830	$90,981	$83,103	$450,008	$400,035	$348,013
United States	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	376,820	337,648	292,148
United States | Engagement	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	255,832	226,578	186,243
United States | Non-engagement	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	120,988	111,070	105,905
Other countries	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	73,188	62,387	55,865
Other countries | Engagement	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	58,958	49,932	44,942
Other countries | Non-engagement	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	$14,230	$12,455	$10,923

Segment_Information_Longlived_

Segment Information (Long-lived assets) (Details) (USD $)	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
In Thousands, unless otherwise specified
Segment Information (Long-lived assets) [Line Items]	'	'	'
Long-lived assets (net book value)	$10,188	$7,876	$8,340
United States	'	'	'
Segment Information (Long-lived assets) [Line Items]	'	'	'
Long-lived assets (net book value)	10,026	7,803	8,254
Other countries	'	'	'
Segment Information (Long-lived assets) [Line Items]	'	'	'
Long-lived assets (net book value)	$162	$73	$86

Segment_Information_Narrative_

Segment Information (Narrative) (Details)	12 Months Ended
	Dec. 29, 2013
Segment and Geographic Information [Abstract]	'
Disclosure of Major Customers	'0

Selected_Quarterly_Financial_I2

Selected Quarterly Financial Information (unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Selected Quarterly Financial Information [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net Sales	$145,958	$98,925	$108,014	$97,111	$136,121	$89,830	$90,981	$83,103	$450,008	$400,035	$348,013
Gross Profit	27,221	18,687	20,097	17,646	25,659	16,930	17,191	15,278	83,651	75,058	72,132
Net income	$4,931	$2,906	$2,206	$832	$4,919	$1,741	$1,578	$154	$10,875	$8,392	$11,350
Basic net income per share	$0.38	$0.23	$0.18	$0.07	$0.39	$0.14	$0.11	$0.01	$0.87	$0.64	$0.80
Diluted net income per share	$0.38	$0.23	$0.17	$0.07	$0.39	$0.14	$0.11	$0.01	$0.85	$0.63	$0.77

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
zulily [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Revenues from products sold	$0	$9,800	$65,000
Receivables from related parties	0	9,800	'
Privately-held company [Member] | Convertible Preferred Shares [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Revenues from products sold	1,800,000	1,200,000	1,000,000
Receivables from related parties	800,000	200,000	'
Privately-held company [Member] | Common Stock and Warrants [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Revenues from products sold	100,000	'	'
Receivables from related parties	$0	'	'

Revolving_Line_of_Credit_Detai

Revolving Line of Credit (Details) (Revolving Credit Facility [Member], USD $)	Dec. 29, 2013
Revolving Credit Facility [Member]	'
Line of Credit Facility [Line Items]	'
Credit Agreement, Maximum Borrowing Capacity	$35,000,000
Credit Agreement, Amount Outstanding	$0

Subsequent_Events_Narrative_De

Subsequent Events (Narrative) (Details) (Renewed Revolving Loan [Member], USD $)	0 Months Ended
	Feb. 21, 2014
Renewed Revolving Loan [Member]	'
Subsequent Event [Line Items]	'
New Credit Limit	$40,000,000
Accordion option	10,000,000
Modification fee for the Renewed Revolving Loan	60,000
Interest on the advances	'daily reset LIBOR rate plus 1.65%
Advances minimum amount termed out for purpose of repurchases of Company's common stock	$5,000,000
Interest on the termed out advances	'fixed or floating basis rates predetermined by the Lender and Borrower

Subsequent_Events_Details

Subsequent Events (Details)	0 Months Ended
	Feb. 21, 2014
IBD/EBITDA Ratio [Member]	'
Line of Credit Facility, Covenant Terms [Line Items]	'
Line of Credit Facility, Covenant Terms	'2.50 to 1
Fixed Charge Coverage Ratio [Member]	'
Line of Credit Facility, Covenant Terms [Line Items]	'
Line of Credit Facility, Covenant Terms	'1.25 to 1

Valuation_and_Qualifying_Accou1

Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 29, 2013		Dec. 30, 2012		Jan. 01, 2012
Reserve for sales returns [Member]	'		'		'
Valuation and Qualifying Accounts Disclosure [Line Items]	'		'		'
Valuation Allowances and Reserves, Balance at Beginning of Period	$1,367		$1,087		$1,019
Valuation Allowances and Reserves, Charged to Cost and Expense	38,911		36,720		33,634
Valuation Allowances and Reserves, Deductions	-38,892	[1]	-36,440	[1]	-33,566	[1]
Valuation Allowances and Reserves, Balance at End of Period	1,386		1,367		1,087
Reserve for fraud [Member]	'		'		'
Valuation and Qualifying Accounts Disclosure [Line Items]	'		'		'
Valuation Allowances and Reserves, Balance at Beginning of Period	128		102		104
Valuation Allowances and Reserves, Charged to Cost and Expense	291		356		177
Valuation Allowances and Reserves, Deductions	-278	[1]	-330	[1]	-179	[1]
Valuation Allowances and Reserves, Balance at End of Period	$141		$128		$102
[1]	(A)Deductions for sales returns and fraud consist of actual sales returns and credit card charge backs in each period.