INVESTMENTS IN DEBT AND EQUITY SECURITIES: Level 4 (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Summary of investments in debt and equity securities
Available-for-sale Securities, Gross Unrealized Gain	$ 10,541,000		$ 6,792,000
Available-for-sale Securities, Gross Unrealized Loss	0		0
Available-for-sale Securities, Fair Value	33,179,000		31,913,000
Number of securities in an unrealized loss position (whole numbers)	0		0
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 0	$ 0