Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 47,865	$ 9,751
Accounts receivable, net		245,449	203,189
Prepaid expenses		16,809	13,805
Deferred tax assets			3,776
Other current assets		1,958	1,437
Total current assets		312,081	231,958
Property, equipment and leasehold improvements, net		20,145	15,726
Goodwill	[1]	508,297	495,679
Intangible assets, net		84,673	102,583
Long-term accounts receivable, less current portion		62,717	46,401
Deferred tax assets, noncurrent		50,405	29,682
Deferred financing costs, net		9,394	6,169
Other assets		3,969	1,946
Total assets	[2]	1,051,681	930,144
Current liabilities:
Accounts payable		60,599	57,033
Accrued expenses		60,748	53,978
Accrued interest expense		6,245	10,667
Deferred revenue		3,684	6,402
Current portion of contingent earnout obligation			4,473
Current portion of working capital facilities			40,396
Other current liabilities		9,056	6,950
Total current liabilities		140,332	179,899
Senior unsecured notes payable		500,000	250,000
Senior secured revolving credit facility and working capital facilities, less current portion		35,243	143,853
Long-term contingent earnout obligation, less current portion			2,114
Deferred tax liability, noncurrent		3,333
Other long-term liabilities		12,738	9,403
Total liabilities		$ 691,646	$ 585,269
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value; Authorized 50,000 shares; no shares issued and outstanding at December 31, 2014 and December 31, 2015		$ 0	$ 0
Common stock, $0.0001 par value; Authorized 250,000 shares; issued 41,276 and 42,983 shares at December 31, 2014 and December 31, 2015, respectively		4	4
Additional paid-in capital		446,409	403,945
Accumulated other comprehensive loss		(26,003)	(14,376)
Accumulated deficit		(30,619)	(36,210)
Treasury stock, at cost; Outstanding 905 and 1,705 shares at December 31, 2014 and December 31, 2015, respectively		(29,756)	(8,488)
Total stockholders’ equity		360,035	344,875
Total liabilities and stockholders' equity		$ 1,051,681	$ 930,144

[1] Goodwill recorded in connection with certain tax benefits to be realized in the Company's U.S. income tax returns has been reflected in the United States segment.

[2] Total assets and long-lived assets include goodwill. Goodwill recorded in connection with certain tax benefits to be realized in the Company's U.S. income tax returns has been reflected in the United States segment.