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Represents the fair value of awards granted using the disclosed option pricing methodology.

No definition available.

Name:	stag_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValue
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Represents the number of simulations run to determine the fair value of awards.

No definition available.

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Represents the index percentage base assumption in the calculation of total stockholder return hurdle used in valuation model to determine the fair value of awards granted.

No definition available.

Name:	stag_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsReturnRateBasisUsedInCalculatingRelativeTotalStockholderReturnHurdle
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Represents the limit on the amount of aggregate reward that all recipients collectively can earn.

No definition available.

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Represents the percentage of excess total stockholder return above relative total stockholder return hurdle, which comprises the outperformance pool.

No definition available.

Name:	stag_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfExcessTotalStockholderReturnAboveRelativeTotalStockholderReturnHurdle
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Represents the percentage points added to the reference rate over the measurement period to compute the relative total stockholder return hurdle.

No definition available.

Name:	stag_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageUsedInCalculatingRelativeTotalStockholderReturnHurdle
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Represents the minimum percentage increase in the total stockholder return over the measurement period for determining eligibility of awards to recipients.

No definition available.

Name:	stag_ShareBasedCompensationArrangementByShareBasedPaymentAwardThresholdPercentageOfIncreaseInCumulativeStockholderReturn
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Represents the period of time over which specified terms of share-based award must be met.

No definition available.

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- Details

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(iv)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Details

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Price of a single share of a number of saleable stocks of a company.

No definition available.