Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
OPERATING ACTIVITIES:
Net loss	$ (4,133)us-gaap_NetIncomeLoss	$ (3,124)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:
Provision for inventory obsolescence	30us-gaap_InventoryWriteDown	93us-gaap_InventoryWriteDown
Recovery of doubtful accounts	(100)	(63)
Stock-based compensation expense	178us-gaap_ShareBasedCompensation	148us-gaap_ShareBasedCompensation
Depreciation and amortization	190	178
Noncash implied license revenue	(177)us-gaap_RecognitionOfDeferredRevenue
Loss on disposal of asset	50us-gaap_GainLossOnDispositionOfAssets1
Deferred income taxes	3us-gaap_DeferredIncomeTaxExpenseBenefit	3us-gaap_DeferredIncomeTaxExpenseBenefit
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue	469	(3,622)
Other current and noncurrent assets	1,231	(142)
Inventories	(2,561)us-gaap_IncreaseDecreaseInInventories	(843)us-gaap_IncreaseDecreaseInInventories
Deferred costs		30
Accounts payable	(1,196)	2,191
Accrued expenses	(205)	2,090
Customer deposits	2,127	(1,164)
Deferred revenue and other short term liabilities	(1,479)	1,841
Other liabilities	35	100
Net cash used in operating activities	(5,538)	(2,284)
INVESTING ACTIVITIES:
Purchases of property and equipment	(248)	(195)
Net cash used in investing activities	(248)	(195)
FINANCING ACTIVITIES:
Proceeds from revolving line of credit	4,000
Repayments on revolving line of credit	(4,000)us-gaap_RepaymentsOfLinesOfCredit
Proceeds from the exercise of stock options	3
Debt principal payments		(59)us-gaap_RepaymentsOfLongTermDebt
Net cash provided by (used in) financing activities	3	(59)
Effect of exchange rate change on cash	(32)
Change in cash and cash equivalents	(5,815)	(2,538)
Cash and cash equivalent - Beginning of Year	13,142	4,534
Cash and cash equivalent - End of Year	7,327	1,996
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest		16us-gaap_InterestPaidNet
Cash paid for income taxes	9us-gaap_IncomeTaxesPaidNet	6us-gaap_IncomeTaxesPaidNet
Noncash financing activity:
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