Fair Value of Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012
Fair value of convertible preferred stock warrant
Balance at December 31, 2011	$ 117
Unrealized loss included in other income (expense), net	118
Balance at June 30, 2012	$ 235

Unrealized loss included in other income expense net.

No definition available.

Name:	kalop_UnrealizedLossIncludedInOtherIncomeExpenseNet
Namespace Prefix:	kalop_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration