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 and losses recognized for other than temporary impairments (OTTI) of the subject investments.

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+ Details

- Definition

The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

+ References

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+ Details

Subsequent Events (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended
Subsequent Events (Details) (USD $)	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jul. 23, 2013 Executive Officer [Member] Subsequent Event [Member]	Jun. 30, 2013 Rudolph Technologies, Inc [Member]	Jun. 30, 2013 Rudolph Technologies, Inc [Member]	Aug. 08, 2013 Rudolph Technologies, Inc [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Available-for-sale shares sold						24,431	31,931	10,000
Proceeds from Sale and Maturity of Available-for-sale Securities			$ 405,000	$ 0				$ 131,000
Gain on sale of available-for-sale securities	$ 298,000	$ 0	$ 401,000	$ 0		$ 297,000	$ 400,000	$ 129,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term					10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price					$ 4.21