CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net loss	$ (9,970)	$ (10,148)	$ (14,179)
Adjustments to reconcile net loss to net cash used in operating activities:
Income from discontinued operations		(220)	(383)
Deferred income taxes	(2,098)	(204)	(2,056)
Depreciation and amortization	5,581	4,696	1,061
Accretion of interest to related party liability	748	772	525
Interest on debt note, bank line of credit and mortgage loan	223	79
Remeasurement of contingent consideration	510	221
Stock-based compensation expense	1,227	2,352	347
Gain on disposal of fixed assets			(1,417)
Impairment of intangibles			647
Loss and impairment on equity investments			2,244
Changes in operating assets and liabilities:
Accounts receivable	2,140	(4,400)	4,855
Inventories	1,923	(2,053)	1,483
Income taxes receivable	(44)	148	811
Other assets	570	(371)	331
Accounts payable	(2,112)	3,307	25
Liability to related party	(1,042)	(1,081)	(516)
Accrued expenses	(2,564)	(1,971)	722
Deferred revenue	(291)	1,054
Income taxes payable	555	(539)	(171)
Net cash used in operating activities from continuing operations	(4,645)	(8,358)	(5,671)
Net cash used in operating activities from discontinued operations		(941)	(258)
Net cash used in operating activities	(4,645)	(9,299)	(5,929)
Cash flows from investing activities:
Capital expenditures	(1,728)	(758)	(727)
Net cash (paid for) acquired from acquisitions	(5,154)	3,881	(10,892)
Proceeds from sale of assets, net			2,087
Sales and maturities of short-term investments		1,015
Net cash (used in) provided by investing activities	(6,882)	4,138	(9,532)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs	18,212	11,532
Payments on debt note and mortgage loan	(1,102)	(53)
Changes in bank line of credit, net	(605)	98
Proceeds from issuance of common stock upon options exercised	57
Proceeds from issuance of common stock upon warrants exercised	1,076
Net cash provided by financing activities	17,638	11,577
Effect of exchange rates on cash and cash equivalents	329	(453)	(253)
Net increase (decrease) in cash and cash equivalents	6,440	5,963	(15,714)
Cash and cash equivalents at beginning of year	10,799	4,836	20,550
Cash and cash equivalents at end of year	17,239	10,799	4,836
Supplemental disclosures of non-cash investing and financing activities:
Common stock issued in connection with business combinations	3,024	41,254	23,785
Conversion of stock options in connection with business combinations		3,007
Common stock issued in connection with contingent consideration	316	343
Common stock issued in connection with stock bonus and incentive plans	1,628	174
Stock option grants issued in connection with stock bonus and incentive plans	672
Common stock issued to affiliates for conversion of loan		291
Debt note issued in connection with business acquisition		1,990
Fair value of contingent consideration in connection with business combinations	5,060	298
Cash paid for interest expense	1,049	865	487
Income taxes paid	50	91	792
Property and equipment subject to accounts payable	979
Income taxes received	$ 83	$ 14	$ (1,078)