Public Offerings (Details) (USD $)	0 Months Ended					3 Months Ended		9 Months Ended
	Jul. 25, 2013	Mar. 07, 2013	Aug. 01, 2012	Jul. 30, 2012	Jul. 26, 2012	Sep. 03, 2013	Sep. 04, 2012	Sep. 03, 2013	Sep. 04, 2012	Aug. 06, 2013	Apr. 10, 2013	Dec. 25, 2012
Public Offering [Line Items]
Number of shares sold by shareholders	6,000,000	4,750,000
Number of shares sold to cover over allotments										900,000	150,000
Proceeds from offering	$ 0	$ 0							$ 67,278,000
Offering costs and registration expense	400,000	400,000	3,700,000			381,000		793,000
Issuance of common stock for initial public offering net of fees and issuance costs					75,400,000				66,459,000
Issuance of common stock for initial public offering net of fees and issuance costs, shares					5,800,000
Issuance of common stock for initial public offering net of fees and issuance costs, price per share					$ 13.00
Proceeds from issuance IPO			70,100,000
Underwriting discounts and commissions			5,300,000
Membership interests converted to shares				18,000,000
Preferred stock, shares authorized			10,000,000			10,000,000		10,000,000				10,000,000
Preferred stock, par value per share			$ 0.001			$ 0.001		$ 0.001				$ 0.001
Common stock, shares authorized			190,000,000			190,000,000		190,000,000				190,000,000
Common stock, par value per share			$ 0.001			$ 0.001		$ 0.001				$ 0.001
Common stock, shares issued			23,800,000			23,811,692		23,811,692				23,794,667
Common stock, shares outstanding			23,800,000			23,811,692		23,811,692				23,794,667
Repayments of amounts outstanding under credit facility			61,000,000
Write-off of debt issuance costs							1,649,000		1,649,000
Principal Owner [Member]
Public Offering [Line Items]
Percentage of outstanding common stock owned	26.00%
Common stock, shares outstanding	6,200,000
Majority Shareholder [Member]
Public Offering [Line Items]
Percentage of outstanding common stock owned			75.60%
Common stock, shares outstanding			18,000,000
Payment in consideration for termination of asset advisory agreement			$ 3,000,000