Organization And Summary Of Significant Accounting Policies (Schedule of fair value, assets measured on recurring basis)(Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Cash and Cash Equivalents [Member]
Cash and cash equivalents	$ 36,865	$ 23,789
Cash [Member]
Cash and cash equivalents	36,814	23,010
Money Market Funds [Member]
Cash and cash equivalents	51	779
Fixed Income Securities [Member]
Fixed income securities	9,535	28,492
Certificate Of Deposits [Member]
Fixed income securities		22,191
Corporate Bonds - Financial [Member]
Fixed income securities	7,227	4,303
Corporate Bonds - Industrial [Member]
Fixed income securities		1,998
International Bonds - Financial [Member]
Fixed income securities	2,308
Fair Value, Inputs, Level 1 [Member] \| Cash and Cash Equivalents [Member]
Cash and cash equivalents	36,865	23,789
Fair Value, Inputs, Level 1 [Member] \| Cash [Member]
Cash and cash equivalents	36,814	23,010
Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member]
Cash and cash equivalents	51	779
Fair Value, Inputs, Level 1 [Member] \| Fixed Income Securities [Member]
Fixed income securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Certificate Of Deposits [Member]
Fixed income securities		0
Fair Value, Inputs, Level 1 [Member] \| Corporate Bonds - Financial [Member]
Fixed income securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Corporate Bonds - Industrial [Member]
Fixed income securities		0
Fair Value, Inputs, Level 1 [Member] \| International Bonds - Financial [Member]
Fixed income securities	0
Fair Value, Inputs, Level 2 [Member] \| Cash and Cash Equivalents [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 [Member] \| Cash [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 [Member] \| Money Market Funds [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 [Member] \| Fixed Income Securities [Member]
Fixed income securities	9,535	28,492
Fair Value, Inputs, Level 2 [Member] \| Certificate Of Deposits [Member]
Fixed income securities		22,191
Fair Value, Inputs, Level 2 [Member] \| Corporate Bonds - Financial [Member]
Fixed income securities	7,227	4,303
Fair Value, Inputs, Level 2 [Member] \| Corporate Bonds - Industrial [Member]
Fixed income securities		1,998
Fair Value, Inputs, Level 2 [Member] \| International Bonds - Financial [Member]
Fixed income securities	2,308
Fair Value, Inputs, Level 3 [Member] \| Cash and Cash Equivalents [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] \| Cash [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] \| Money Market Funds [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] \| Fixed Income Securities [Member]
Fixed income securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Certificate Of Deposits [Member]
Fixed income securities		0
Fair Value, Inputs, Level 3 [Member] \| Corporate Bonds - Financial [Member]
Fixed income securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Corporate Bonds - Industrial [Member]
Fixed income securities		0
Fair Value, Inputs, Level 3 [Member] \| International Bonds - Financial [Member]
Fixed income securities	$ 0

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item 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 Company 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.

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