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Property plant and equipment estimated useful live.

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Schedule Of Significant Accounting Policies [Line Items]

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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Fees charged to customers for the delivery, generally by postal or freight service providers, of product or goods purchased.

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Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Significant Accounting Policies [Line Items]
Foreign currency gain/loss	$ (3,000)	$ 4,200	$ (714)
Shipping and handling revenue	2,300	2,600	2,400
Freight-out expenses	11,500	11,000	11,300
Depreciation charge	6,600	8,000	7,200
Advertising expenses	3,400	3,700	3,900
Restructuring expenses	1,024	2,420	$ 437
Retained earnings	60,546	60,981
Accounting Standards Update 2016-09
Schedule Of Significant Accounting Policies [Line Items]
Retained earnings	(46)
Employee severance
Schedule Of Significant Accounting Policies [Line Items]
Restructuring expenses		700
Consulting expense
Schedule Of Significant Accounting Policies [Line Items]
Restructuring expenses		1,600
Severance and consulting expenses
Schedule Of Significant Accounting Policies [Line Items]
Restructuring Reserve	$ 0	$ 525
Performance Shares
Schedule Of Significant Accounting Policies [Line Items]
Vesting period	3 years
Number of shares range percentage	150.00%
Wal-Mart Stores Inc \| Net sales \| Credit Concentration Risk
Schedule Of Significant Accounting Policies [Line Items]
Percentage of net sales	15.00%	16.00%	16.00%
Costco Wholesale Corporation \| Net sales \| Credit Concentration Risk
Schedule Of Significant Accounting Policies [Line Items]
Percentage of net sales		10.00%
Depreciation Adjustment
Schedule Of Significant Accounting Policies [Line Items]
Depreciation charge		$ 1,200
Building and Improvements \| Minimum
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment depreciated over estimated useful lives	30 years
Machinery, Furniture and Equipment \| Minimum
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment depreciated over estimated useful lives	3 years
Machinery, Furniture and Equipment \| Maximum
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment depreciated over estimated useful lives	10 years