Note B - Restricted Cash and Cash Equivalents and Restricted Investments Available for Sale (Detail) - Gross Unrealized Holding Gains And Losses (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Gross unrealized holding gains	$ 8
Gross unrealized holding losses	$ 3

Gross unrealized holding gains for restricted investments.

No definition available.

Name:	ksws_GrossUnrealizedHoldingGainsRestrictedInvestments
Namespace Prefix:	ksws_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant