Operating Expenses (Tables)

6 Months Ended

Jun. 30, 2016

Operating Expenses [Abstract]

Schedule of Direct Operating Expenses

	Three months ended				Six months ended
	June 30,				June 30,
		2016		2015		2016		2015
Employee compensation expenses	$	9,332	$	6,278	$	15,590	$	10,875
Buildings, facilities and technology expenses		2,394		1,832		4,689		3,447
Travel, advertising and promotion expenses		7,979		6,933		13,916		11,087
Other costs of services		53		1,984		876		3,227
	$	19,758	$	17,027	$	35,071	$	28,636

Schedule of Selling, General and Administrative Expenses

	Three months ended				Six months ended
	June 30,				June 30,
		2016		2015		2016		2015
Employee compensation expenses	$	47,560	$	44,046	$	92,050	$	85,775
Buildings, facilities and technology expenses		12,969		10,287		24,205		20,333
Travel, advertising and promotion expenses		6,792		4,805		12,354		10,886
Professional fees		3,115		3,205		6,567		6,305
Other SG&A expenses		4,159		2,896		7,726		5,696
	$	74,595	$	65,239	$	142,902	$	128,995

Schedule of Depreciation and Amortization Expenses

	Three months ended				Six months ended
	June 30,				June 30,
		2016		2015		2016		2015
Depreciation expense	$	7,932	$	8,947	$	15,715	$	18,227
Amortization expense		2,352		1,822		4,649		3,158
	$	10,284	$	10,769	$	20,364	$	21,385