CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 18,324	$ 18,298
Accounts receivable, net of allowance for doubtful accounts of $7,374 and $7,532, at March 31, 2013 and December 31, 2012, respectively	13,477	13,792
Other receivables, net of allowance for doubtful accounts of $93 and $85 at March 31, 2013 and December 31, 2012, respectively	6,738	6,515
Inventory	3,118	2,894
Prepaid expenses and other current assets	1,940	1,923
Total current assets	43,597	43,422
Property and equipment, net	19,301	19,851
Intangible assets, net	9,053	9,664
Goodwill	16,446	16,446
Other assets	666	627
Total assets	89,063	90,010
Current liabilities:
Accounts payable	7,235	6,349
Accrued liabilities	9,351	9,946
Deferred revenue	2,231	2,195
Total current liabilities	18,817	18,490
Deferred tax liability	881	866
Deferred rent	546	656
Total liabilities	20,244	20,012
Shareholders' equity:
Common stock, $0.001 par value; 200,000,000 shares authorized; 25,276,515 and 25,189,340 shares issued and outstanding at March 31, 2013 and December 31, 2012, respectively	25	25
Paid-in capital	257,356	256,448
Accumulated deficit	(188,562)	(186,475)
Total stockholders' equity	68,819	69,998
Total liabilities and stockholders' equity	$ 89,063	$ 90,010