Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Jun. 30, 2011	Jun. 30, 2010
Consolidated Balance Sheets [Abstract]
Amortized cost of investments	$ 162,575	$ 177,300	$ 187,907
Allowance for premiums and fees receivable	$ 364	$ 406	$ 418
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000	10,000	10,000
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000	75,000
Common stock, shares issued	40,928	48,458	48,509
Common stock, shares outstanding	40,928	48,458	48,509