Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 8,627		$ 8,416
Accounts receivable, net	144,676		144,041
Other receivables	21		40
Prepaid expenses	5,336		4,487
Deferred tax assets	16		1,640
Other current assets	1,213		1,173
Total current assets	159,889		159,797
Property, equipment and leasehold improvements, net	10,333		8,918
Goodwill	370,143		300,260
Intangible assets, net	152,896		146,168
Long-term accounts receivable, less current portion	31,708
Deferred tax assets, noncurrent	4,173
Deferred financing costs, net	10,258		11,458
Other assets	1,101		438
Total assets	740,501		627,039
Current liabilities:
Accounts payable	46,940		42,642
Accrued expenses	35,995		28,410
Accrued interest expense	10,918		10,247
Deferred revenue	3,951		1,332
Current portion of subordinated unsecured notes payable	275		1,932
Current portion of contingent earnout obligation	91		91
Current portion of working capital facilities	5,983
Other current liabilities	5,973		5,459
Total current liabilities	110,126		90,113
Senior unsecured notes payable	250,000		250,000
Senior secured revolving credit facility and working capital facilities, less current portion	128,402		44,063
Long-term subordinated unsecured notes payable, less current portion	300		717
Long-term contingent earnout obligation, less current portion			86
Deferred tax liability, noncurrent			2,159
Other long-term liabilities	7,525		1,977
Total liabilities	496,353		389,115
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value; Authorized 50,000,000 shares; no shares issued and outstanding at December 31, 2011 and 2012	0		0
Common stock, $0.0001 par value; Authorized 250,000,000 shares; issued and outstanding 34,090,618 and 34,341,360 shares at December 31, 2011 and 2012, respectively	3		3
Additional paid-in capital	285,938		268,162
Accumulated other comprehensive income (loss)	3,183		(1,429)
Accumulated deficit	(36,488)		(21,549)
Treasury stock, at cost; Outstanding 805,613 and 905,349 shares at December 31, 2011 and 2012, respectively	(8,488)		(7,263)
Total stockholders’ equity	244,148	[1]	237,924	[1]
Total liabilities and stockholders' equity	$ 740,501		$ 627,039

[1] Includes intercompany investments in subsidiaries.