Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Mar. 30, 2014
Segment Reporting Information [Line Items]
Net revenues	$ 128,542us-gaap_SalesRevenueNet	$ 147,406us-gaap_SalesRevenueNet
Gross profit	56,537us-gaap_GrossProfit	62,286us-gaap_GrossProfit
Operating expenses	56,871us-gaap_OperatingExpenses	60,120us-gaap_OperatingExpenses
Interest expense, net	(711)us-gaap_InterestIncomeExpenseNet	(989)us-gaap_InterestIncomeExpenseNet
Other gain (loss), net	371us-gaap_OtherNonoperatingIncomeExpense	(86)us-gaap_OtherNonoperatingIncomeExpense
(Loss) earnings before income taxes	(674)	1,091
Concentration risk, percentage	10.00%us-gaap_ConcentrationRiskPercentage1	10.00%us-gaap_ConcentrationRiskPercentage1
Restructuring expenses	1,304us-gaap_RestructuringCharges	1,892us-gaap_RestructuringCharges
Acquisition costs	79	0
Chief Financial Officer
Segment Reporting Information [Line Items]
Operating expenses	800
Merchandise Availability Solutions
Segment Reporting Information [Line Items]
Net revenues	81,526	93,464
Gross profit	41,285	43,942
Merchandise Availability Solutions \| Electronic Article Surveillance (EAS) Systems
Segment Reporting Information [Line Items]
Net revenues	31,200	40,100
Merchandise Availability Solutions \| Alpha Business
Segment Reporting Information [Line Items]
Net revenues	21,200	24,800
Merchandise Availability Solutions \| Electronic Article Surveillance (EAS) Consumables
Segment Reporting Information [Line Items]
Net revenues	22,100	24,300
Apparel Labeling Solutions
Segment Reporting Information [Line Items]
Net revenues	37,185	42,081
Gross profit	11,548	14,085
Retail Merchandising Solutions
Segment Reporting Information [Line Items]
Net revenues	9,831	11,861
Gross profit	$ 3,704	$ 4,259

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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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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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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