Unaudited Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Service revenue	$ 508,251	$ 343,953	$ 1,014,046	$ 633,356
Operating expenses:
Service expense	450,058	309,130	893,926	569,066
General and administrative expense	23,316	16,156	48,000	29,775
Depreciation and amortization	14,957	5,143	29,857	8,871
Total operating expenses	488,331	330,429	971,783	607,712
Operating income	19,920	13,524	42,263	25,644
Other expenses:
Interest expense, net	4,545	1,261	10,552	2,846
Loss on equity investment	1,059		3,542
(Gain) Loss on foreign currency translation	(714)	61	(395)	101
Income before income taxes	15,030	12,202	28,564	22,697
Provision for income taxes	8,396	5,530	15,693	9,738
Net income	6,634	6,672	12,871	12,959
Net income available to common stockholders (Note 9)	$ 4,181	$ 6,672	$ 9,243	$ 12,959
Earnings per common share:
Basic (in Dollars per share)	$ 0.26	$ 0.47	$ 0.58	$ 0.93
Diluted (in Dollars per share)	$ 0.26	$ 0.46	$ 0.57	$ 0.91
Weighted-average number of common shares outstanding:
Basic (in Shares)	16,097,198	14,171,013	16,036,959	14,006,944
Diluted (in Shares)	16,240,898	14,453,964	16,193,372	14,306,898