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Investments and Fair Value Measurements - Category of Financial Instruments Not Held at Fair Value (Parenthetical) (Detail) (Money Market Funds, USD $)
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Mar. 31, 2015
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Money Market Funds
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| Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | |
| Quoted market price |
$ 1.00samg_QuotedMarketPricePerCommonShare / us-gaap_CashAndCashEquivalentsAxis = us-gaap_MoneyMarketFundsMember |
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- Definition
Quoted market price per common share. No definition available.
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- Details
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