Stock Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended				1 Months Ended	3 Months Ended
	Dec. 31, 2013 Restricted Stock Units (RSUs)	Jun. 30, 2014 Restricted Stock Units (RSUs)	Jun. 30, 2013 Restricted Stock Units (RSUs)	Sep. 30, 2013 Restricted Stock Units (RSUs)	Dec. 31, 2013 Restricted Stock Units (RSUs) Performance Based Restricted Stock Unit	Dec. 31, 2013 Restricted Stock Units (RSUs) Time Based Restricted Stock Unit	Jun. 30, 2014 Restricted Stock	Jun. 30, 2013 Restricted Stock	Dec. 31, 2013 Minimum Restricted Stock Units (RSUs) Performance Based Restricted Stock Unit	Dec. 31, 2013 Maximum Restricted Stock Units (RSUs) Performance Based Restricted Stock Unit	Feb. 26, 2014 2014 Equity Incentive Plan	Feb. 26, 2014 2014 Director Plan	Feb. 28, 2014 2014 Non-Employee Director Equity Incentive Plan Restricted Stock	Jun. 30, 2014 2014 Non-Employee Director Equity Incentive Plan Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance											750,000	150,000
Vesting period	3 years					3 years								2 years
Actual amount of RSUs earned based on cumulative earnings					60.00%
Performance cycle					3 years
Target RSUs granted range									0.00%	150.00%
Unvested restricted stock outstanding		132,282		81,555
Compensation expense		$ 2.0	$ 2.2				$ 0.9	$ 1.0
Shares issued under the plan													16,000
Shares issued, price per share													$ 66.15
Vesting percentage per year														50.00%