Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities:
Net loss	$ (4,323)	$ (559)
Adjustments to reconcile net loss to net cash provided by operating activities:
Gain on interest rate swap	(54)	(170)
Depreciation and amortization	14,025	8,609
Amortization of deferred rent	(143)	(56)
Share-based compensation	4,696	977
Provision for doubtful accounts	1,095	149
Amortization of deferred financing costs	514	406
Deferred income taxes	(3,937)	(2,576)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(4,910)	(1,975)
Prepaid expenses and other current assets	(357)	(926)
Accounts payable and accrued expenses	3,469	2,679
Accrued interest expense	(5,428)	427
Deferred revenue and customer deposits	539	(537)
Other liabilities	(387)	(182)
Net cash provided by operating activities	4,799	6,266
Investing activities:
Cash paid for acquisitions, net		(187,303)
Purchases of equipment and leasehold improvements, net	(552)	(1,968)
Working capital and other settlements for acquisitions	908	(325)
Net cash (used in) provided by investing activities	356	(189,596)
Financing activities:
Borrowings under senior secured revolving credit facility	11,000	165,000
Proceeds from the exercise of options and warrants	50	263
Excess tax benefit related to share-based compensation		438
Purchases of stock for treasury	(387)
Payment of deferred financing costs	(414)	(445)
Repayment of subordinated unsecured notes payable	(546)	(361)
Net borrowings (repayments) under working capital facilities	(3,789)	130
Repayment under senior secured revolving credit facility	(11,000)	(165,000)
Other	(95)	(18)
Net cash provided by (used in) financing activities	(5,181)	165,007
Exchange rate impact on cash and cash equivalents	76	80
Net increase (decrease) in cash and cash equivalents	50	(18,243)
Cash and cash equivalents, beginning of period	8,416	33,624
Cash and cash equivalents, end of period	8,466	15,381
Supplemental disclosure of noncash investing and financing activities:
Issuance of common stock for acquisitions		30,269
Supplemental disclosures of cash flow information:
Cash paid for interest	11,570	988
Cash paid for income taxes	$ 1,228	$ 1,430