Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Cash flows from operating activities:
Net income (loss)	$ 4,918	$ (13,487)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	2,192	3,146
Stock-based compensation	1,085	1,057
Other non-cash items	108	(360)
Changes in assets and liabilities:
Accounts receivable	(5,636)	(15,079)
Advance billings	761	(1,256)
Inventories	(5,589)	759
Prepaid expenses and other assets	(1,462)	2,017
Accounts payable	(14,145)	5,665
Accrued compensation and benefits and other current liabilities	2,510	(3,761)
Deferred revenue	(3,127)	(475)
Other liabilities	(138)	231
Net cash used in operating activities	(18,523)	(21,543)
Cash flows from investing activities:
(Increase) decrease in restricted cash	70	(201)
Purchases of property and equipment	(738)	(1,126)
Other	10	0
Net cash used in investing activities	(658)	(1,327)
Cash flows from financing activities:
Proceeds from revolving credit facility, net of borrowing costs	0	19,610
Repayment of revolving credit facility	(14,000)	0
Proceeds from issuance of common stock, net	31,972	296
Net cash provided by financing activities	17,972	19,906
Effect of exchange rate changes on cash and cash equivalents	(920)	239
Net decrease in cash and cash equivalents	(2,129)	(2,725)
Cash and cash equivalents, beginning of period	14,578	14,354
Cash and cash equivalents, end of period	$ 12,449	$ 11,629