CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 19,306	$ 18,298
Accounts receivable, net of allowance for doubtful accounts of $7,325 and $7,532, at June 30, 2013 and December 31, 2012, respectively	12,452	13,792
Other receivables, net of allowance for doubtful accounts of $88 and $85 at June 30, 2013 and December 31, 2012, respectively	6,584	6,515
Inventory	3,683	2,894
Prepaid expenses and other current assets	3,620	1,923
Total current assets	45,645	43,422
Property and equipment, net	18,725	19,851
Intangible assets, net	8,458	9,664
Goodwill	16,446	16,446
Other assets	667	627
Total assets	89,941	90,010
Current liabilities:
Accounts payable	7,935	6,349
Accrued liabilities	11,033	9,946
Deferred revenue	2,016	2,195
Total current liabilities	20,984	18,490
Deferred tax liability	879	866
Deferred rent	484	656
Total liabilities	22,347	20,012
Shareholders' equity:
Common stock, $0.001 par value; 200,000,000 shares authorized; 25,549,762 and 25,189,340 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively	25	25
Paid-in capital	258,430	256,448
Accumulated deficit	(190,861)	(186,475)
Total stockholders' equity	67,594	69,998
Total liabilities and stockholders' equity	$ 89,941	$ 90,010