Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (5,422)	$ (5,052)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation and amortization	134	117
Stock-based compensation	697	612
Proceeds received from cost method investment	0	(827)
Restructuring charge	0	12
Other	81	58
Changes in operating assets and liabilities:
Accounts receivable	405	24
Prepaids and other	(163)	1,127
Other non-current assets	9	(62)
Accounts payable and accrued expenses	9	(7)
Restructuring accrual	0	(462)
Unearned revenue and deferred maintenance	(1,633)	(797)
Other noncurrent liabilities	(409)	251
Net cash used for operating activities	(6,292)	(5,006)
Cash flows from investing activities:
Purchase of property and equipment	(70)	(281)
Proceeds received from cost method investments	0	827
Purchase of short-term investment	(12,547)	(62,209)
Maturities of short-term investment	31,503	42,726
Net cash provided by (used for) investing activities	18,886	(18,937)
Cash flows from financing activities:
Proceeds from issuance of common stock, net	382	395
Proceeds from exercise of common stock options, net	102	1,772
Net cash provided by financing activities	484	2,167
Effect of exchange rates on cash and cash equivalents	(2)	160
Net increase (decrease) in cash and cash equivalents	13,076	(21,616)
Cash and cash equivalents at beginning of year	23,789	45,405
Cash and cash equivalents at end of year	36,865	23,789
Supplemental cash flows disclosures:
Cash paid for income taxes	$ 31	$ 16