CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 12,302,000	$ 10,439,000
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Depreciation and amortization	3,662,000	2,817,000
Realized (gain) loss on investment securities, net	(12,000)	15,000
Share-based compensation	1,299,000	1,269,000
Deferred income taxes	209,000	(5,000)
Changes in assets and liabilities which provided (used) cash:
Accounts receivable	(524,000)	(328,000)
Inventory	3,823,000	(3,890,000)
Prepaid expenses & other current assets	325,000	1,777,000
Other assets	(1,000)	134,000
Accounts payable and accrued expenses	5,915,000	7,688,000
Income taxes	3,508,000	(127,000)
Net cash provided by operating activities	30,506,000	19,789,000
Cash Flow from Investing Activities:
Sale of investment securities	4,927,000	1,302,000
Purchase of investment securities	(6,277,000)	(2,680,000)
Purchase of property and equipment	(5,549,000)	(5,139,000)
Purchase of intangible assets	(131,000)	0
Net cash used in investing activities	(7,030,000)	(6,517,000)
Cash Flow from Financing Activities:
Repayment of long-term debt	(730,000)	(398,000)
Decrease in note receivable	5,000	2,000
Excess tax benefits from share-based compensation	709,000	764,000
Proceeds from issuance of common stock	0	34,000
Purchase of treasury stock	(12,333,000)	(35,000)
Net cash (used in) provided by financing activities	(12,349,000)	367,000
NET CHANGE IN CASH AND CASH EQUIVALENTS	11,127,000	13,639,000
Cash and cash equivalents - beginning of the period	17,165,000	10,604,000
Cash and cash equivalents - end of period	28,292,000	24,243,000
Supplemental disclosure of cash flow information:
Interest paid	50,000	55,000
Income taxes	$ 2,639,000	$ 5,304,000