Operating Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Summary of Domestic and International Operations

The following tables present information on the Company’s domestic and international operations as of and for the years ended December 31, 2014, 2013 and 2012 (dollars in thousands).

	Year Ended December 31,
	2014		2013		2012
Revenue
Domestic	$	474,715	$	395,549	$	334,066
International		335,122		369,774		326,862
Total revenue	$	809,837	$	765,323	$	660,928
Income from operations
Domestic	$	111,869	$	73,858	$	55,011
International		103,139		68,738		59,166
Total income from operations	$	215,008	$	142,596	$	114,177
Depreciation and amortization
Domestic	$	16,284	$	14,536	$	11,988
International		2,448		2,607		1,284
Total depreciation and amortization	$	18,732	$	17,143	$	13,272
Expenditures for property and equipment
Domestic	$	12,414	$	12,527	$	15,628
International		870		2,345		2,244
Total expenditures for property and equipment	$	13,284	$	14,872	$	17,872

	December 31,
	2014		2013
Property and equipment, net
Domestic	$	29,274	$	34,091
International		4,711		5,314
Total property and equipment, net	$	33,985	$	39,405
Assets
Domestic	$	595,180	$	475,050
International		165,017		217,102
Total assets	$	760,197	$	692,152

Summary of Company's Revenue by Geographical Region

The following table presents the Company’s revenue by geographic region for the years ended December 31, 2014, 2013 and 2012 (dollars in thousands):

	Year Ended December 31,
	2014		2013		2012
Revenue
United States	$	474,715	$	395,549	$	334,066
United Kingdom		325,014		360,186		308,415
Other international countries		10,108		9,588		18,447
Total revenue	$	809,837	$	765,323	$	660,928