XML 15 R8.htm IDEA: XBRL DOCUMENT v2.4.0.6
Marketable Securities
3 Months Ended
Mar. 31, 2012
Marketable Securities [Abstract]  
Marketable Securities
3.  Marketable Securities
 
The Company held $15.1 million of marketable securities at March 31, 2012.  The Company has classified these investments as available for sale.  These investments are comprised of federally insured certificates of deposit as follows: $5.1 million with a maturity date of July 12, 2012; $7.0 million with a maturity date of October 4, 2012; and $3.0 million on March 28, 2013.