Accumulated Other Comprehensive Loss (Details Textual) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Available For Sale Securities Unrealized Losses	$ 6,000	$ 100,000

This item represents the unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	seac_AvailableForSaleSecuritiesUnrealizedLosses
Namespace Prefix:	seac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant