CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Cash flows from operating activities:
Net income (loss)	$ 1,348	$ 53	$ (6,200)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Income from discontinued operations		(4,166)	(702)
Depreciation of property and equipment	1,469	1,590	1,973
Amortization of intangibles	797	816	1,402
Amortization of discount		236	379
Deferred income taxes	367	253	220
Loss on extinguishment of debt		267
Fair value adjustment of warrant	117	144	40
Change in net pension liability	257	318	232
Loss (gain) on disposal of property and equipment	13	(2)	98
Stock-based compensation expense	1,914	1,248	1,428
Other	(320)	93	148
Changes in working capital:
Accounts receivable, net	(435)	(207)	(604)
Inventories	(85)	1,521	1,425
Prepaids, deposits and other current assets	(145)	780	(116)
Accounts payable	480	(1,204)	595
Other current liabilities	(431)	(5,522)	(554)
Net cash provided by operating activities of discontinued operations		(635)	1,663
Net cash provided by (used in) operating activities	5,346	(4,417)	1,427
Cash flows from investing activities:
Proceeds from sale of subsidiary, net of transaction costs		11,824
Acquisition of property and equipment	(962)	(320)	(553)
Proceeds from the sale of property and equipment	26	29	23
Net change in other assets	47	24	(10)
Purchase of short-term investments		(219)	(24)
Sale of short-term investments		87	198
Decrease (increase) in restricted cash, including reinvested interest		7,396	(7,396)
Net cash provided by (used in) investing activities of discontinued operations		(50)	149
Net cash (used in) provided by investing activities	(889)	18,771	(7,613)
Cash flows from financing activities:
Repayment of notes payable		(5,000)
Borrowings under lines of credit			642
Repayment of lines of credit			(642)
Repayment of capital lease lines of credit	(575)	(796)	(1,011)
Proceeds from the exercise of stock options	3,343	1,124	1
Redemption of Series A preferred stock		(6,800)
Net proceeds from public and private sale of equity securities			8,502
Net cash used in financing activities of discontinued operations		(50)	(136)
Net cash provided by (used in) financing activities	2,768	(11,522)	7,356
Effect of exchange rate changes on cash and cash equivalents	(19)	214	168
Increase in cash and cash equivalents	7,206	3,046	1,338
Cash and cash equivalents, at beginning of year	9,376	6,330	4,992
Cash and cash equivalents, at end of year	$ 16,582	$ 9,376	$ 6,330