CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 17,372,000	$ 16,189,000
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Depreciation and amortization	5,793,000	4,304,000
Realized loss on investment securities, net	55,000	74,000
Share-based compensation	1,916,000	1,942,000
Deferred income taxes	4,832,000	244,000
Changes in assets and liabilities which provided (used) cash:
Accounts receivable	(874,000)	(188,000)
Inventory	130,000	(6,308,000)
Prepaid expenses & other current assets	(93,000)	1,721,000
Other assets	(639,000)	762,000
Accounts payable and accrued expenses	6,440,000	9,579,000
Income taxes	(1,566,000)	(867,000)
Net cash provided by operating activities	33,366,000	27,452,000
Cash Flows from Investing Activities:
Sale of investment securities	6,703,000	1,978,000
Purchase of investment securities	(8,085,000)	(12,614,000)
Purchase of property and equipment	(9,847,000)	(8,246,000)
Purchase of intangible assets	(259,000)
Net cash used in investing activities	(11,488,000)	(18,882,000)
Cash Flows from Financing Activities:
Repayment of long-term debt	(961,000)	(596,000)
Issuance of long-term debt		393,000
Decrease in note receivable	8,000	3,000
Excess tax benefits from share-based compensation	753,000	1,238,000
Proceeds from issuance of common stock		34,000
Purchase of treasury stock	(20,389,000)	(35,000)
Net cash (used in) provided by financing activities	(20,589,000)	1,037,000
NET CHANGE IN CASH AND CASH EQUIVALENTS	1,289,000	9,607,000
Cash and cash equivalents - beginning of the period	17,165,000	10,604,000
Cash and cash equivalents - end of period	18,454,000	20,211,000
Supplemental disclosure of cash flow information:
Interest paid	78,000	82,000
Income taxes paid	$ 4,854,000	$ 9,678,000

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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).