Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ (6,722)	$ 1,364
Adjustments to reconcile net income (loss) to cash (used in) provided by operating activities:
Depreciation and amortization	3,760	3,189
Provision for doubtful accounts		85
Stock-based compensation expense	1,992	1,284
Change in fair value of warrant liability	(1,970)	(63)
Changes in operating assets and liabilities:
Accounts receivable	1,191	(7,069)
Note receivable	114
Prepaid expenses and other	554	(178)
Accounts payable and accrued liabilities	63	3,181
Deferred revenue	(398)	30
Net cash (used in) provided by operating activities	(1,416)	1,823
Cash flows from investing activities:
Capital expenditures	(2,013)	(1,715)
Issuance of notes receivable	(1,085)
Proceeds from notes receivable	585
Acquisitions, net of cash acquired	(6,217)
Purchases of intangible assets	(554)	(3,887)
Net cash used in investing activities	(9,284)	(5,602)
Cash flows from financing activities:
Proceeds from the exercise of warrants		6,974
Proceeds from the exercise of options	158	1,784
Proceeds from the public offering of common stock	18,227
Payment of revolving credit facility	(7,000)	(3,000)
Proceeds from revolving credit facility		3,000
Payment of financing related costs	(282)	(10)
Net cash provided by financing activities	11,103	8,748
Net increase in cash and cash equivalents	403	4,969
Cash and cash equivalents, beginning of the period	13,079	10,080
Cash and cash equivalents, end of the period	13,482	15,049
Supplemental cash flow information:
Interest paid	64	381
Income taxes paid	$ 11	$ 206