2.2.0.25falsefalse008040 - Disclosure - Fair Value Measurements (Tables)truefalsefalse1falsefalseUSDfalsefalse4/1/2010 - 12/31/2010 USD ($) USD ($) / shares $c00035http://www.sec.gov/CIK0000038074duration2010-04-01T00:00:002010-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0frx_ScheduleToFinancialStatementsAbstractfrxfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSchedule to Financial Statements [Abstract]3false0us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">The following table presents the level within the fair value hierarchy at which the Company’s financial assets are carried at fair value and measured on a recurring basis:</div><div style="DISPLAY: block; TEXT-INDENT: 0pt"> </div><div align="left"><table style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman" cellspacing="0" cellpadding="0" width="60%"><tr><td style="PADDING-BOTTOM: 2px" valign="bottom" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">Description</div></td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: -2.6pt">Fair value at</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: -2.6pt">December 31, 2010</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Quoted prices in active markets for identical assets</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 1)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Significant other observable market inputs</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 2)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Unobservable</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">market inputs</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 3)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Money market accounts</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">1,336,695</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">959,668</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">377,027</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Municipal bonds and notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">341,893</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">341,893</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Commercial paper</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">989,321</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">229,212</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">760,109</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Variable rate demand notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">199,905</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">199,905</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Floating rate notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">412,355</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">412,355</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Auction rate securities</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">35,189</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">35,189</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Certificates of deposit</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">478,297</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">213,569</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">264,728</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Corporate bonds</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">404,875</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">404,875</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Government agency bonds</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">72,965</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">72,965</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr></table></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"> </div><div style="DISPLAY: block; TEXT-INDENT: 0pt"> </div><div align="left"><table style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman" cellspacing="0" cellpadding="0" width="60%"><tr><td style="PADDING-BOTTOM: 2px" valign="bottom" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">Description</div></td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: -2.6pt">Fair value at</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: -2.6pt">March 31, 2010</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Quoted prices in active markets for identical assets</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 1)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Significant other observable market inputs</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 2)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td style="PADDING-BOTTOM: 2px" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 1px solid; TEXT-ALIGN: center" valign="bottom" width="12%" colspan="2"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">Unobservable</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">market inputs</div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"> (Level 3)</div></td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Money market accounts</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">1,839,944</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">1,390,393</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">449,551</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Municipal bonds and notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">426,872</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">426,872</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Commercial paper</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">433,952</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">141,156</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">292,796</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Variable rate demand notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">157,199</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">157,199</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Floating rate notes</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">359,293</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">359,293</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td valign="bottom" width="12%" colspan="2"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Auction rate securities</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">36,089</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">36,089</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Certificates of deposit</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">497,285</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">418,929</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">78,356</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Corporate bonds</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">299,207</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">299,207</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td valign="bottom" align="left" width="44%"><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">Government agency bonds</div></td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">14,941</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%">14,941</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td><td valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="TEXT-ALIGN: right" valign="bottom" width="11%"> </td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr></table></div>The following table presents the level within the fair value hierarchy at which the Company’s financial assets are carried at fair value and measured onfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element represents the disclosure related to assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 falsefalseFair value assets measured on a recurring basis4false0us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">The following table presents a reconciliation of the Level 3 investments measured at fair value on a recurring basis using unobservable inputs for the nine months ended December 31, 2010:</div><div style="DISPLAY: block; TEXT-INDENT: 0pt"> </div><div align="left"><table style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman" cellspacing="0" cellpadding="0" width="40%"><tr><td valign="bottom" align="left" width="80%"><div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -9pt; MARGIN-RIGHT: 0pt" align="left">Balance at March 31, 2010</div></td><td valign="bottom" align="right" width="1%"> </td><td style="TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="TEXT-ALIGN: right" valign="bottom" width="17%">36,089</td><td style="TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr><tr><td style="PADDING-BOTTOM: 2px" valign="bottom" align="left" width="80%"><div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -9pt; MARGIN-RIGHT: 0pt" align="left">Sales</div></td><td style="PADDING-BOTTOM: 2px" valign="bottom" align="right" width="1%"> </td><td style="BORDER-BOTTOM: black 2px solid; TEXT-ALIGN: left" valign="bottom" width="1%"> </td><td style="BORDER-BOTTOM: black 2px solid; TEXT-ALIGN: right" valign="bottom" width="17%">( 900</td><td style="PADDING-BOTTOM: 2px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%">)</td></tr><tr><td style="PADDING-BOTTOM: 4px" valign="bottom" align="left" width="80%"><div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -9pt; MARGIN-RIGHT: 0pt" align="left">Balance at December 31, 2010</div></td><td style="PADDING-BOTTOM: 4px" valign="bottom" align="right" width="1%"> </td><td style="BORDER-BOTTOM: black 4px double; TEXT-ALIGN: left" valign="bottom" width="1%">$</td><td style="BORDER-BOTTOM: black 4px double; TEXT-ALIGN: right" valign="bottom" width="17%">35,189</td><td style="PADDING-BOTTOM: 4px; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap" width="1%"> </td></tr></table></div>The following table presents a reconciliation of the Level 3 investments measured at fair value on a recurring basis using unobservable inputs for the ninefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element represents, for the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c falsefalseFair value assets measured on recurring basis, unobservable input reconciliation13Fair Value Measurements (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue