INVESTMENTS (Details 4) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Subtotal, debt securities position security	Dec. 31, 2012 Subtotal, debt securities	Mar. 31, 2013 Subtotal, debt securities Maximum	Sep. 30, 2012 Subtotal, debt securities Maximum	Mar. 31, 2013 Subtotal, debt securities NAIC Rating 1	Mar. 31, 2013 Subtotal, debt securities NAIC Rating 2	Mar. 31, 2013 Common Stock security position	Mar. 31, 2013 Equity securities	Dec. 31, 2012 Equity securities
Fixed income securities in unrealized loss positions
Total Cost or Amortized Cost	$ 168,887,000	$ 90,225,000			$ 166,218,000	$ 73,143,000			$ 158,976,000	$ 7,242,000		$ 2,669,000	$ 17,082,000
Fair Value	167,322,000	88,967,000			164,943,000	72,760,000			157,730,000	7,213,000		2,379,000	16,207,000
Unrealized Loss	(1,565,000)	(1,258,000)			(1,275,000)	(383,000)			(1,246,000)	(29,000)	(300,000)	(290,000)	(875,000)
Percent to Total					100.00%				97.70%	2.30%
Cash	22,371,000	44,314,000	70,306,000	81,184,000
Short-term investments, at cost	3,465,000	30,462,000
Other-than-temporary impairment (OTTI) losses recognized in net earnings or other comprehensive earnings	0
Number of unrealized loss positions					69						1
Unrealized losses as percentage of fixed income portfolio cost basis								0.10%
Number of securities in unrealized loss positions for 12 months or longer					1						0
Unrealized loss on securities in unrealized loss position for twelve consecutive month or longer	$ 17,000	$ 33,000			$ 17,000	$ 33,000	$ 100,000	$ 100,000