Operating Expenses (Schedule of Direct Operating Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Expenses [Abstract]
Employee compensation expenses	$ 6,593	$ 5,309	$ 21,731	$ 16,185
Buildings, facilities and technology expenses	1,709	1,745	6,015	5,191
Travel, advertising and promotion expenses	4,991	5,120	18,287	16,207
Other costs of services	1,457	(129)	3,788	3,098
Cost of Services, Total	$ 14,750	$ 12,045	$ 49,821	$ 40,681