<?xml version="1.0"?>
<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><infoTable><nameOfIssuer>AMERICAN EXPRESS CO</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>025816109</cusip><value>3250</value><shrsOrPrnAmt><sshPrnamt>46733</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>40582</Sole><Shared>0</Shared><None>6151</None></votingAuthority></infoTable><infoTable><nameOfIssuer>AUTOMATIC DATA PROCESSING IN</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>053015103</cusip><value>25</value><shrsOrPrnAmt><sshPrnamt>300</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>300</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>AUTOMATIC DATA PROCESSING IN</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>053015103</cusip><value>1511</value><shrsOrPrnAmt><sshPrnamt>17835</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>17062</Sole><Shared>0</Shared><None>773</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BANK AMER CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>060505104</cusip><value>170</value><shrsOrPrnAmt><sshPrnamt>10100</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>1200</Sole><Shared>0</Shared><None>8900</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BANK AMER CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>060505104</cusip><value>10</value><shrsOrPrnAmt><sshPrnamt>600</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>600</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BB&amp;T CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>054937107</cusip><value>280</value><shrsOrPrnAmt><sshPrnamt>7404</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>3024</Sole><Shared>0</Shared><None>4380</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BERKSHIRE HATHAWAY INC DEL</nameOfIssuer><titleOfClass>CL A</titleOfClass><cusip>084670108</cusip><value>6923</value><shrsOrPrnAmt><sshPrnamt>35</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>35</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BERKSHIRE HATHAWAY INC DEL</nameOfIssuer><titleOfClass>CL B NEW</titleOfClass><cusip>084670702</cusip><value>264</value><shrsOrPrnAmt><sshPrnamt>2000</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>2000</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BERKSHIRE HATHAWAY INC DEL</nameOfIssuer><titleOfClass>CL B NEW</titleOfClass><cusip>084670702</cusip><value>33588</value><shrsOrPrnAmt><sshPrnamt>254378</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>233999</Sole><Shared>0</Shared><None>20379</None></votingAuthority></infoTable><infoTable><nameOfIssuer>BRISTOL MYERS SQUIBB CO</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>110122108</cusip><value>269</value><shrsOrPrnAmt><sshPrnamt>3907</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>3407</Sole><Shared>0</Shared><None>500</None></votingAuthority></infoTable><infoTable><nameOfIssuer>HEARTLAND EXPRESS INC</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>422347104</cusip><value>8108</value><shrsOrPrnAmt><sshPrnamt>476368</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>432554</Sole><Shared>0</Shared><None>43814</None></votingAuthority></infoTable><infoTable><nameOfIssuer>MICROSOFT CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>594918104</cusip><value>1100</value><shrsOrPrnAmt><sshPrnamt>19830</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>19830</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>NORFOLK SOUTHERN CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>655844108</cusip><value>237</value><shrsOrPrnAmt><sshPrnamt>2800</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>800</Sole><Shared>0</Shared><None>2000</None></votingAuthority></infoTable><infoTable><nameOfIssuer>ORACLE CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>68389X105</cusip><value>861</value><shrsOrPrnAmt><sshPrnamt>23562</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>23562</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>PHILIP MORRIS INTL INC</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>718172109</cusip><value>432</value><shrsOrPrnAmt><sshPrnamt>4909</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>4209</Sole><Shared>0</Shared><None>700</None></votingAuthority></infoTable><infoTable><nameOfIssuer>PHILIP MORRIS INTL INC</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>718172109</cusip><value>395</value><shrsOrPrnAmt><sshPrnamt>4490</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>4490</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>SYSCO CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>871829107</cusip><value>14</value><shrsOrPrnAmt><sshPrnamt>350</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>0</Sole><Shared>0</Shared><None>350</None></votingAuthority></infoTable><infoTable><nameOfIssuer>SYSCO CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>871829107</cusip><value>15976</value><shrsOrPrnAmt><sshPrnamt>389649</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>355118</Sole><Shared>0</Shared><None>34531</None></votingAuthority></infoTable><infoTable><nameOfIssuer>TECH DATA CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>878237106</cusip><value>7470</value><shrsOrPrnAmt><sshPrnamt>112538</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>103506</Sole><Shared>0</Shared><None>9032</None></votingAuthority></infoTable><infoTable><nameOfIssuer>U S G CORP</nameOfIssuer><titleOfClass>COM NEW</titleOfClass><cusip>903293405</cusip><value>24</value><shrsOrPrnAmt><sshPrnamt>1000</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>1000</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>U S G CORP</nameOfIssuer><titleOfClass>COM NEW</titleOfClass><cusip>903293405</cusip><value>4493</value><shrsOrPrnAmt><sshPrnamt>184981</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>170496</Sole><Shared>0</Shared><None>14485</None></votingAuthority></infoTable><infoTable><nameOfIssuer>UNITED TECHNOLOGIES CORP</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>913017109</cusip><value>884</value><shrsOrPrnAmt><sshPrnamt>9199</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>9199</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>VANGUARD INDEX FDS</nameOfIssuer><titleOfClass>LARGE CAP ETF</titleOfClass><cusip>922908637</cusip><value>211</value><shrsOrPrnAmt><sshPrnamt>2260</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>2260</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable><infoTable><nameOfIssuer>VANGUARD INDEX FDS</nameOfIssuer><titleOfClass>TOTAL STK MKT</titleOfClass><cusip>922908769</cusip><value>17976</value><shrsOrPrnAmt><sshPrnamt>172345</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>155803</Sole><Shared>0</Shared><None>16542</None></votingAuthority></infoTable><infoTable><nameOfIssuer>WAL-MART STORES INC</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>931142103</cusip><value>537</value><shrsOrPrnAmt><sshPrnamt>8764</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>SOLE</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>8246</Sole><Shared>0</Shared><None>518</None></votingAuthority></infoTable><infoTable><nameOfIssuer>WAL-MART STORES INC</nameOfIssuer><titleOfClass>COM</titleOfClass><cusip>931142103</cusip><value>6</value><shrsOrPrnAmt><sshPrnamt>102</sshPrnamt><sshPrnamtType>SH</sshPrnamtType></shrsOrPrnAmt><investmentDiscretion>OTR</investmentDiscretion><otherManager>
		</otherManager><votingAuthority><Sole>102</Sole><Shared>0</Shared><None>0</None></votingAuthority></infoTable></informationTable>
