|
Subsequent Events (Details) (USD $)
|
3 Months Ended | 3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 25, 2012
|
Mar. 31, 2013
Restaurants [Member]
|
Apr. 01, 2013
Secondary Public Offering [Member]
April Secondary Offering [Member]
|
Jun. 30, 2013
Secondary Public Offering [Member]
April Secondary Offering [Member]
|
Apr. 17, 2013
Secondary Public Offering [Member]
April Secondary Offering [Member]
|
|
| Subsequent Event [Line Items] | ||||||
| Number of New Restaurants | 2 | |||||
| Number of Restaurants | 41 | 43 | ||||
| Sale of Stock | 3,000,000 | |||||
| Share Price | $ 33.00 | |||||
| Sale of Stock, Underwriter Option | 450,000 | |||||
| Registration Costs and Expenses | $ 417,000 | $ 0 | $ 115,000 | $ 370,000 | ||