Equity - Schedule of Restricted Stock Activity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Number of Shares
Non-vested as of end of period (in shares)			966,579
Restricted Stock Awards
Number of Shares
Non-vested as of beginning of period (in shares)	99,561		99,561
Granted (in shares)			0
Vested (in shares)			(97,098)
Forfeited (in shares)			(2,463)
Non-vested as of end of period (in shares)			0
Weighted Average Grant Date Fair Value
Granted (in dollars per share)			$ 0.00
Vested (in dollars per share)			$ 5.85
Forfeited (in dollars per share)			$ 5.68
Non-vested as of end of period (in dollars per share)			$ 0.00	$ 5.84
Restricted Stock Disclosures:
Award vesting period			3 years
Restricted Stock Units
Number of Shares
Non-vested as of beginning of period (in shares)	854,928		854,928
Granted (in shares)			661,500
Vested (in shares)			(411,406)
Forfeited (in shares)			(138,443)
Non-vested as of end of period (in shares)			966,579	854,928
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 4.63	$ 3.88	$ 4.89
Vested (in dollars per share)			$ 4.64
Forfeited (in dollars per share)			$ 4.54
Non-vested as of end of period (in dollars per share)			$ 4.71	$ 4.51
Restricted Stock Disclosures:
Award vesting period			3 years
Remaining unamortized stock-based compensation expense			$ 2.7
Remaining unamortized stock-based compensation expense, period for recognition (in years)			1 year 9 months 12 days
Outstanding non-vested RSUs aggregate intrinsic value			5.5
Outstanding non-vested RSUs weighted average remaining contractual term (in years)			1 year 1 month 12 days
Aggregate intrinsic value of vested shares			2.4	1.2	1.8
Shares expected to vest			900,000
Aggregate intrinsic value of equity items other than options, expected to vest			$ 4.9
Weighted average contractual term for equity investments other than options expected to vest			1 year 0 months 12 days