CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 104,531	$ 62,313
Accounts receivable, net of allowances of $490 and $722 at December 31, 2013 and December 31, 2012, respectively	58,597	55,116
Inventories	31,457	26,903
Prepaid expenses	18,883	15,392
Deferred tax assets	12,635	11,860
Other current assets	7,675	9,172
Total current assets	233,778	180,756
Property and equipment, net	35,254	34,107
Non-current net investment in sales-type leases	11,485	13,228
Goodwill	111,343	111,407
Other intangible assets	81,602	85,550
Non-current deferred tax assets	1,102	993
Other assets	17,937	15,778
Total assets	492,501	441,819
Current liabilities:
Accounts payable	16,471	18,255
Accrued compensation	19,604	11,613
Accrued liabilities	13,746	11,988
Deferred service revenue	22,626	20,449
Deferred gross profit	19,957	20,772
Total current liabilities	92,404	83,077
Non-current deferred service revenue	17,763	19,892
Non-current deferred tax liabilities	28,162	26,491
Other long-term liabilities	5,175	4,809
Total liabilities	143,504	134,269
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; none issued	0	0
Common Stock, $0.001 par value; 100,000,000 shares authorized; 41,840,298 and 35,003,677 shares issued and outstanding, respectively, at December 31, 2013 and 39,493,469 and 33,541,493 shares issued and outstanding, respectively, at December 31 2012	41	39
Treasury stock, at cost, outstanding: 6,836,621 and 5,951,976 shares at December 31, 2013 and 2012, respectively	(110,962)	(90,000)
Additional paid-in capital	421,232	382,844
Retained earnings (accumulated deficit)	38,515	14,536
Accumulated other comprehensive income	171	131
Total stockholders' equity	348,997	307,550
Total liabilities and stockholders' equity	$ 492,501	$ 441,819