CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 3,990,000	$ 6,358,000
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Depreciation and amortization	2,381,000	1,648,000
Realized (gain) loss on investment securities, net	(13,000)	(115,000)
Share-based compensation	573,000	682,000
Deferred income taxes	111,000	580,000
Loss on disposal of fixed assets	40,000
Changes in assets and liabilities which provided (used) cash:
Accounts receivable	(700,000)	(192,000)
Inventory	4,622,000	3,667,000
Prepaid expenses and other current assets	(585,000)	(257,000)
Other assets	251,000	4,000
Accounts payable and accrued expenses	7,333,000	3,578,000
Income taxes, prepaid	2,705,000	2,795,000
Net cash provided by operating activities	20,708,000	18,748,000
Cash Flow from Investing Activities:
Sale of investment securities	2,582,000	3,638,000
Purchase of investment securities	(2,859,000)	(5,537,000)
Purchase of property and equipment	(2,492,000)	(3,083,000)
Net cash used in investing activities	(2,769,000)	(4,982,000)
Cash Flow from Financing Activities:
Repayment of long-term debt and capital leases	(270,000)	(239,000)
Decrease in note receivable	4,000	2,000
Excess tax benefits from share-based compensation		495,000
Net cash provided by financing activities	(266,000)	258,000
NET CHANGE IN CASH AND CASH EQUIVALENTS	17,673,000	14,024,000
Cash and cash equivalents - beginning of the period	14,262,000	17,165,000
Cash and cash equivalents - end of period	31,935,000	31,189,000
Supplemental disclosure of cash flow information:
Interest paid	29,000	25,000
Income tax refunds received, net	$ 515,000

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).