XML 35 R12.htm IDEA: XBRL DOCUMENT v2.4.1.9
Taxes
3 Months Ended
Mar. 31, 2015
Taxes [Abstract]  
Taxes
(6) Taxes:
 
As of March 31, 2015, the Company’s calendar years 2011 through 2014 remain subject to examination by the IRS.  The effective federal income tax rate differs from the normal statutory rate primarily as a result of tax-exempt investment income.