XML 20 R13.htm IDEA: XBRL DOCUMENT v2.3.0.15
Taxes
9 Months Ended
Sep. 30, 2011
Taxes [Abstract] 
Taxes
(8) Taxes:
As of September 30, 2011, the Company's 2008 and subsequent tax years remain subject to examination by the IRS.  The effective rate differs from the normal statutory rate primarily as a result of tax-exempt investment income.