Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statements of Comprehensive Income
Net income	$ 3,217,198	$ 2,777,582	$ 5,438,598	$ 4,037,581
Other comprehensive income, net of tax:
Unrealized gain on available-for-sale securities, net of tax of $604 and $1,235 for the three and six months ended March 31, 2013	1,027		2,095
Other comprehensive income	1,027		2,095
Comprehensive income	3,218,225	2,777,582	5,440,693	4,037,581
Less: Comprehensive income attributable to noncontrolling interest		(292,503)		(562,189)
Comprehensive income attributable to Natural Grocers by Vitamin Cottage, Inc.	$ 3,218,225	$ 2,485,079	$ 5,440,693	$ 3,475,392

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

Net of tax amount of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

+ References

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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