Summary of Significant Accounting Policies (Details)	12 Months Ended
Dec. 31, 2012 M D
Cash and cash equivalents
Maximum term of original or remaining maturity to classify highly liquid investments as cash and cash equivalents (in days)	90
Marketable securities
Maximum maturity period for short-term marketable securities (in months)	12
Minimum maturity period for long-term marketable securities (in months)	12

Represents the maximum threshold for the maturity period of investments in debt securities below which it is classified as short-term.

No definition available.

Name:	advs_DebtMaturityPeriodForShortTermInvestmentClassificationThreshold
Namespace Prefix:	advs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration