Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016
Cash flows from operating activities
Net income (loss)	$ (1,856,000)	$ 7,527,000
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation of property, plant, and equipment	9,934,000	9,555,000
Impairment charges	0	1,578,000
Provision for doubtful accounts	121,000	273,000
Stock-based compensation	2,103,000	2,043,000
Deferred income taxes	1,904,000	469,000
Cash gain on investments	154,000	0
Other non-cash charges (gain), net	14,000	(41,000)
Changes in assets and liabilities:
Accounts receivable	3,562,000	1,795,000
Inventories	(1,825,000)	17,043,000
Prepaid expenses and other assets	(156,000)	(2,395,000)
Accounts payable	(14,670,000)	(7,632,000)
Income taxes	(2,041,000)	(11,314,000)
Accrued and other liabilities	(1,362,000)	(3,127,000)
Net cash (used in) provided by operating activities	(4,118,000)	15,774,000
Cash flows from investing activities
Purchases of property, plant, and equipment	(6,057,000)	(11,651,000)
Purchases of investments	(39,298,000)	(30,000,000)
Proceeds from maturities and sales of investments	33,350,000	0
Proceeds from disposal of property, plant, and equipment	0	8,000
Net cash used in investing activities	(12,005,000)	(41,643,000)
Cash flows from financing activities
Tax withholdings for equity compensation	(595,000)	(631,000)
Repurchase of common stock	(3,278,000)	(15,695,000)
Other financing activities, net	0	(27,000)
Net cash used in financing activities	(3,873,000)	(16,353,000)
Effect of exchange rate changes on cash and cash equivalents	(17,000)	(3,000)
Net decrease in cash and cash equivalents	(20,013,000)	(42,225,000)
Cash and cash equivalents, beginning of period	86,375,000	97,681,000
Cash and cash equivalents, end of period	66,362,000	55,456,000
Supplemental disclosure of cash flow information
Cash paid for income taxes, net	$ 769,000	$ 15,396,000