Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows used in operating activities:
Net loss	$ (16,890)	$ (8,746)
Net income (loss) from discontinued operations, net of tax	(89)	2,806
Net loss from continuing operations	(16,801)	(11,552)
Adjustments to reconcile net loss to net cash used in continuing operating activities:
Depreciation and amortization	1,503	924
Current income tax benefit resulting from income generated from discontinued operations	0	(1,463)
Deferred income tax benefit	(170)	(25)
Loss on disposal of property and equipment	4	10
Stock-based compensation	1,068	784
Changes in operating assets and liabilities:
Receivables	3,393	(5,456)
Finished goods inventories	(216)	(39)
Prepaid income taxes / income taxes payable	(209)	396
Prepaid expenses and other assets	(2,077)	(1,555)
Trade accounts payable and other accrued liabilities	(559)	762
Accrued compensation	(1,763)	(1,153)
Deferred revenue	1,073	1,741
Other non-current liabilities	(69)	(63)
Net cash used in continuing operating activities	(14,823)	(16,689)
Net cash provided by (used in) discontinued operating activities	(397)	5,980
Net cash used in operating activities	(15,220)	(10,709)
Cash flows provided by (used in) investing activities:
Purchases of marketable securities	(9,250)	(20,251)
Sales and maturities of marketable securities	17,965	9,000
Purchases of property and equipment	(425)	(367)
Proceeds from sale of property and equipment	43	0
Net cash provided by (used in) continuing investing activities	8,333	(11,618)
Net cash provided by discontinued investing activities	0	22
Net cash provided by (used in) investing activities	8,333	(11,596)
Cash flows provided by (used in) financing activities:
Checks written in excess of bank balance	0	74
Common stock repurchases to settle employee withholding liability	(45)	(52)
Principal payments on capital lease obligations	(168)	0
Proceeds from employee stock plans	142	108
Net cash provided by (used in) continuing financing activities	(71)	130
Net cash used in discontinued financing activities	0	(5)
Net cash provided by (used in) financing activities	(71)	125
Effect of exchange rate changes on cash	9	11
Net decrease in cash and cash equivalents	(6,949)	(22,169)
Cash and cash equivalents, beginning of period	11,684	37,725
Cash and cash equivalents, end of period	4,735	15,556
Supplemental disclosures of net cash received during the period for:
Income taxes received (paid), net	$ (95)	$ 473