Accounts Payable And Accrued Expenses (Schedule Of Accounts Payable And Accrued Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accounts payable	$ 3,026	$ 2,542
Payable to benefit providers and transit agencies	24,528	23,169
Accrued payables	18,627	11,198
Accrued compensation and related benefits	20,314	18,538
Other accrued expenses	3,379	2,891
Deferred revenue	3,092	2,203
Accounts payable and accrued expenses	$ 72,966	$ 60,541