CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Cash flows from operating activities
Net income	$ 2,697	$ 5,939
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,762	1,477
Deferred income taxes	110	36
Amortization of premium discounts on short-term investments	29
Tax benefits from stock-based compensation		(390)
Stock based compensation	282	392
Loss on disposal of property and equipment	20	18
Changes in assets and liabilities:
Accounts receivable	1,045	1,509
Inventories	(3,785)	(1,388)
Prepaid expenses and other current assets	(66)	(592)
Other assets	(53)	5
Merchandise accounts payable	2,009	243
Accrued expenses and other current liabilities	(14)	(3,262)
Income taxes	1,005	709
Other liabilities		(409)
Net cash provided by operating activities	5,041	4,287
Cash flows from investing activities
Purchases of property and equipment	(2,713)	(2,429)
Purchases of short-term investments	(6,318)	(19,871)
Net cash used in investing activities	(9,031)	(22,300)
Cash flows from financing activities
Proceeds from exercise of stock options		238
Tax benefits from stock-based compensation		390
Net cash provided by financing activities		628
Net decrease in cash and cash equivalents	(3,990)	(17,385)
Cash and cash equivalents
Beginning of year	41,136	41,993
End of period	$ 37,146	$ 24,608