The following table summarizes the Company's investments in cash equivalents and marketable securities held by investment managers and overnight investments:

	September 30, 2011			December 31, 2010
	(in thousands)
Overnight Holdings
Money market funds (cash equivalents)	$	18,367		$	157,680
Investment Holdings
Money market funds (cash equivalents)		60,174			72,258
Marketable securities		55,394			43,367
		133,935			273,305
Cash held in demand accounts		105,194			31,295
Outstanding checks		(13,825	)		(26,404	)
Total cash, cash equivalents and marketable securities	$	225,304		$	278,196

Cash and cash equivalents	$	169,910		$	234,829
Marketable securities		55,394			43,367
	$	225,304		$	278,196

Tabular disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.

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The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

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+ References+ Details