Legal Matters (Details) $ in Millions	1 Months Ended					3 Months Ended
	Mar. 31, 2015 USD ($)	Jan. 31, 2015 USD ($)	Jul. 31, 2014 USD ($)	Mar. 31, 2012 USD ($)	Nov. 30, 2011 USD ($) item	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)
Legal Matters
Claim settlement		$ 3.6
General and administrative expenses
Legal Matters
Claim settlement						$ 3.6
Claim from public transit authority customer
Legal Matters
Number of former employees alleged for loss of revenue due to inappropriate and illegal actions | item					1
Period prior to acquisition of contract during which a former employee was committing illegal acts					2 years
Amount of recoupment sought under claim for alleged lost revenue, fees and damages					$ 4.5
Default judgment award amount				$ 2.9
Estimated loss of revenue				$ 2.9			$ 2.6
Percentage of insurance proceeds	40.00%		40.00%
Amount to be paid under settlement agreement excluding percentage of insurance proceeds received	$ 0.7		$ 2.6
Amount received from insurer	1.8
Claim from public transit authority customer | General and administrative expenses
Legal Matters
Claim settlement	$ 1.1