Investments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Gain (loss) on investments	$ 1,176	$ (101)
Other-than-temporary impairments	0	(18)
Net realized gains (losses)	1,176	(119)
US Treasury Securities and Obligation [Member]
Gain (loss) on investments	0	0
Corporate Bond Securities [Member]
Gain (loss) on investments	358	(114)
Collateralized Corporate Bank Loans [Member]
Gain (loss) on investments	173	1
Municipal Bonds [Member]
Gain (loss) on investments	(8)	(80)
Equity Securities Financial Services [Member]
Gain (loss) on investments	188	92
Equity Securities, Other [Member]
Gain (loss) on investments	$ 465	$ 0

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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