Earnings Per Share Data (Details Textual) (USD $)	9 Months Ended
Sep. 30, 2012
Earnings Per Share Data (Textual) [Abstract]
Average market price of the common stock	$ 0.1456

Equity method investment quoted market value during period.

No definition available.

Name:	vcst_EquityMethodInvestmentQuotedMarketValueDuringPeriod
Namespace Prefix:	vcst_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration