Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014
Cash flows from operating activities:
Net income	$ 6,305	$ 2,465
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	610	733
Stock-based compensation	516	298
Other non-cash items	253	101
Changes in assets and liabilities:
Accounts receivable	(4,820)	(10,892)
Advance billings	265	(525)
Inventories	(757)	(9,649)
Prepaid expenses and other assets	57	(3,100)
Accounts payable	(340)	2,674
Accrued compensation and benefits and other current liabilities	823	2,900
Deferred revenue	(100)	1,629
Other liabilities	138	(95)
Net cash provided by (used in) operating activities	2,950	(13,461)
Cash flows from investing activities:
Purchases of property and equipment	(458)	(403)
Other	0	10
Net cash used in investing activities	(458)	(393)
Cash flows from financing activities:
Repayment of revolving credit facility	0	(14,000)
Proceeds from issuance of common stock, net	1,225	31,126
Net cash provided by financing activities	1,225	17,126
Effect of exchange rate changes on cash and cash equivalents	(31)	(507)
Net increase in cash and cash equivalents	3,686	2,765
Cash and cash equivalents, beginning of period	22,760	14,578
Cash and cash equivalents, end of period	26,446	17,343
Supplemental disclosure of non-cash transactions:
Transfer of inventories into property and equipment	$ 1,988	$ 0