Initial Public Offering (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended			3 Months Ended	9 Months Ended		0 Months Ended		1 Months Ended	0 Months Ended		3 Months Ended			0 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2012	Jun. 30, 2012 Convertible Debentures [Member] Interest Expense [Member]	Jun. 30, 2013 Convertible Debentures [Member] Interest Expense [Member]	Jun. 30, 2012 Convertible Debentures [Member] Interest Expense [Member]	Jun. 12, 2013 Common Stock [Member]	Jun. 12, 2013 Common Stock [Member] Convertible Debentures [Member]	Dec. 31, 2012 Common Stock [Member] Convertible Debentures [Member]	Jun. 12, 2013 IPO [Member]	Jun. 11, 2013 IPO [Member]	Jun. 30, 2013 IPO [Member] Convertible Debentures [Member] Interest Expense [Member]	Jun. 30, 2013 IPO [Member] Convertible Debentures [Member]	Jun. 12, 2013 IPO [Member] Redeemable Preferred Stock, Series A-1 [Member]	Jun. 12, 2013 IPO [Member] Common Stock [Member]	Jun. 12, 2013 IPO [Member] Common Stock [Member] Convertible Debentures [Member]	Jun. 12, 2013 IPO [Member] Convertible A-1 and A-2 Preferred Stock [Member]	Jun. 12, 2013 IPO [Member] Preferred Class A [Member] Submittal Exchange [Member]
Class of Stock [Line Items]
Shares converted into stock														0.35				0.50
Common stock, shares outstanding	22,799,000		8,570,000							22,839,000	9,935,000
Offering price per share															$ 15.00
Recognition of unamortized debt discount upon conversion				$ 0	$ 2,250	$ 0						$ 863
Aggregate offering price, net of issuance costs	79,038	0													80,213
Payments of Stock Issuance Costs															6,037
Other income related to conversion option													82
Aggregate offering proceeds	77,709														77,709
Discounts and commission costs															$ 2,504
Shares of stock issued							5,750,000			750,000					5,750,000
Shares converted into stock																	5,336,000	963,000
Shares issued for preferred stock dividends																	412,000
Shares isued in debt converstion								443,000	826,000							443,000