Consolidated Statements of Cash Flows (unaudited) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities:
Net loss	$ (6,375,000)	$ (7,630,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Gain on interest rate swap	(94,000)	(115,000)
Depreciation and amortization	32,148,000	27,787,000
Amortization of deferred rent	(172,000)	(114,000)
Share-based compensation	8,414,000	9,545,000
Excess tax benefit related to share-based compensation	(1,752,000)
Provision for doubtful accounts	2,113,000	1,434,000
Amortization of deferred financing costs	1,081,000	1,048,000
Deferred income taxes	(11,029,000)	(12,481,000)
Other		(896,000)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(19,544,000)	(13,802,000)
Prepaid expenses and other current assets	402,000	769,000
Accounts payable and accrued expenses	12,314,000	9,410,000
Accrued interest expense	(520,000)	168,000
Deferred revenue and customer deposits	1,165,000	1,314,000
Other liabilities	(537,000)	(215,000)
Net cash provided by operating activities	17,614,000	16,222,000
Investing activities:
Purchases of equipment and leasehold improvements, net	(3,313,000)	(2,955,000)
Working capital and other settlements for acquisitions		1,506,000
Proceeds from foreign currency net investment hedge	3,810,000
Net cash provided by (used in) investing activities	497,000	(1,449,000)
Financing activities:
Borrowings under senior secured revolving credit facility	77,000,000	11,000,000
Proceeds from the exercise of options and warrants	6,032,000	328,000
Excess tax benefit related to share-based compensation	1,752,000
Purchases of stock for treasury		(387,000)
Repayment of subordinated unsecured notes payable		(759,000)
Payment of deferred financing costs	(52,000)	(624,000)
Net repayments under working capital facilities	(3,216,000)	(4,341,000)
Repayments under senior secured revolving credit facility	(98,300,000)	(16,000,000)
Other		(95,000)
Net cash used in financing activities	(16,784,000)	(10,878,000)
Exchange rate impact on cash and cash equivalents	(787,000)	51,000
Net increase in cash and cash equivalents	540,000	3,946,000
Cash and cash equivalents, beginning of period	8,627,000	8,416,000
Cash and cash equivalents, end of period	9,167,000	12,362,000
Supplemental disclosures of cash flow information:
Cash paid for interest	14,272,000	12,083,000
Cash paid for income taxes	$ 5,010,000	$ 3,307,000