Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015
Cash flows from operating activities:
Net income	$ 14,385	$ 39,837
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	27,960	21,903
Stock-based compensation	7,606	5,828
Net loss on disposals and impairments of assets	7	184
Excess tax benefits from stock-based compensation	(472)	(1,945)
Deferred income taxes	985	(4,515)
Changes in operating assets and liabilities:
Accounts receivable	5,489	(825)
Inventories	12,904	(14,842)
Income taxes	15,324	4,221
Prepaid expenses and other assets	(6,838)	(944)
Accounts payable	(15,282)	7,879
Customer prepayments	(26,885)	(3,066)
Accrued compensation and benefits	9,249	(8,121)
Other taxes and withholding	1,654	(2,622)
Other accruals and liabilities	1,034	2,082
Net Cash Provided by (Used in) Operating Activities	47,120	45,054
Cash flows from investing activities:
Purchases of property and equipment	(23,764)	(38,938)
Proceeds from marketable debt securities	15,090	41,932
Proceeds from sales of property and equipment	67	41
Investments in marketable debt securities	0	(19,306)
Net cash used in investing activities	(8,607)	(16,271)
Repurchases of common stock
Repurchases of common stock	(71,366)	(51,629)
Net increase (decrease) in short-term borrowings	12,574	(7,478)
Proceeds from issuance of common stock	1,623	2,458
Excess tax benefits from stock-based compensation	472	1,945
Debt issuance costs	(409)	0
Net cash used in financing activities	(57,106)	(54,704)
Cash and cash equivalents, at beginning of period	(18,593)	(25,921)
Cash and cash equivalents, at end of period	20,994	$ 51,995
Cash and cash equivalents, at end of period	$ 2,401