Basis of Reporting (Details Textual) - USD ($)			3 Months Ended		6 Months Ended
	Apr. 22, 2016	Feb. 25, 2014	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Accounting Policies [Line Items]
Implementation costs deferred during the period			$ 0	$ 19,000	$ 0	$ 116,000
Unamortized deferred implementation costs			51,000		51,000		$ 229,000
Internal use software development costs expensed			153,000	201,000	275,000	409,000
Internal use software development costs capitalized			210,000	189,000	357,000	366,000
Foreign currency translation adjustment			(7,100,000)		(7,100,000)		(5,500,000)
Foreign currency transaction gain (loss)			$ (248,000)	$ 146,000	$ (322,000)	$ (22,000)
Antidilutive securities excluded from computation of earnings per share (shares)			0	67,000	8,000	138,000
Accounts receivable transferred under agreement			$ 6,300,000	$ 6,200,000	$ 10,700,000	$ 12,000,000
Loss on sale of receivables			30,000	34,000	45,000	$ 87,000
Reserve amount on factored accounts (percent)	20.00%
Receivables factored during the period			647,000
Factoring liability			525,000		525,000		0
Factoring reserve receivable			100,000		100,000
Inventory, net			521,000		521,000		$ 625,000
Market development agreement, inventory required to be sold within one year of agreement to avoid discount (percent)		75.00%
Market development agreement, inventory discount against original purchase price, percent		10.00%
Inventory write-down			$ 104,000	$ 300,000
Impairment of long-lived assets held-for-use					$ 0
Prime Rate [Member]
Accounting Policies [Line Items]
Factor fee, basis spread on variable rate (percent)	6.49%