<?xml version="1.0" encoding="UTF-8"?>
<informationTable
	xsi:schemaLocation="http://www.sec.gov/edgar/document/thirteenf/informationtable eis_13FDocument.xsd"
	xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable"
	xmlns:n1="http://www.sec.gov/edgar/document/thirteenf/informationtable"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<infoTable>
		<nameOfIssuer>AMERICAN INTERNATIONAL GROUP</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>026874784</cusip>
		<value>5644</value>
		<shrsOrPrnAmt>
			<sshPrnamt>91300</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>91300</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CITIGROUP INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>172967424</cusip>
		<value>12899</value>
		<shrsOrPrnAmt>
			<sshPrnamt>233500</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>233500</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>FLEXTRONICS INTL LTD</nameOfIssuer>
		<titleOfClass>ORD</titleOfClass>
		<cusip>Y2573F102</cusip>
		<value>20679</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1828400</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>1828400</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>GULFPORT ENERGY CORP</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>402635304</cusip>
		<value>1342</value>
		<shrsOrPrnAmt>
			<sshPrnamt>33342</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>33342</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>INTERACTIVE BROKERS GRO-CL A</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>45841N107</cusip>
		<value>20110</value>
		<shrsOrPrnAmt>
			<sshPrnamt>483890</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>483890</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>MYLAN NV</nameOfIssuer>
		<titleOfClass>SHS EURO</titleOfClass>
		<cusip>N59465109</cusip>
		<value>13810</value>
		<shrsOrPrnAmt>
			<sshPrnamt>203500</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>203500</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>PDC ENERGY INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>69327R101</cusip>
		<value>2496</value>
		<shrsOrPrnAmt>
			<sshPrnamt>46535</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>46535</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>PLANTRONICS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>727493108</cusip>
		<value>16633</value>
		<shrsOrPrnAmt>
			<sshPrnamt>295375</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>295375</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>TWENTY-FIRST CENTURY FOX - B</nameOfIssuer>
		<titleOfClass>CL B</titleOfClass>
		<cusip>90130A200</cusip>
		<value>10662</value>
		<shrsOrPrnAmt>
			<sshPrnamt>330900</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>330900</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>EBAY INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>278642103</cusip>
		<value>11343</value>
		<shrsOrPrnAmt>
			<sshPrnamt>188300</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>DFND</investmentDiscretion>
		<votingAuthority>
			<Sole>0</Sole>
			<Shared>188300</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
</informationTable>
