INVESTMENTS IN DEBT AND EQUITY SECURITIES: Level 4 (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Summary of investments in debt and equity securities
Available-for-sale Securities, Gross Unrealized Gain	$ 2,612,000		$ 2,612,000		$ 4,876,000
Available-for-sale Securities, Gross Unrealized Loss	37,000		37,000		0
Available-for-sale Securities, Fair Value	21,346,000		21,346,000		24,561,000
Number of securities in an unrealized loss position (whole numbers)	1		1		0
Proceeds from sales	0	0	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	37,000		37,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,222,000		1,222,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0
Other than Temporary Impairment Recognized	$ 0

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