Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities:
Net loss	$ (6,986)	$ (1,241)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	779	970
Change in fair value of contingent liability	(657)
Provision for doubtful accounts and other adjustments to accounts receivable		(291)
Provision for excess and obsolete inventory	4	31
Non-cash compensation related to stock options, ESPP and restricted stock	765	1,099
Loss on disposal of assets	18
Change in operating accounts:
Accounts receivable	2,800	(90)
Income tax receivable	98	664
Inventories	11
Prepaid expenses and other assets	(212)	(295)
Accounts payable and accrued liabilities	(460)	(968)
Deferred revenue	143	(1,385)
Net cash used in operating activities	(3,697)	(1,506)
Investing activities:
Acquisition of Birdstep Technology, net of cash received	(1,927)
Capital expenditures	(152)	(63)
Sales (purchases) of short-term investments	3,360	(1,440)
Net cash provided by (used in) investing activities	1,281	(1,503)
Financing activities:
Cash received from stock sale for employee stock purchase plan	7	8
Cash received from exercise of stock options		10
Net cash provided by financing activities	7	18
Net decrease in cash and cash equivalents	(2,409)	(2,991)
Cash and cash equivalents, beginning of period	8,819	10,165
Cash and cash equivalents, end of period	6,410	7,174
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$ 32	$ 12