Summary of Significant Accounting Policies (Details 10) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets
Accounts receivable and unbilled revenue, net	$ 1,793	$ 1,010
Liabilities
Deferred revenues	546	1,248
Equity
Accumulated deficit	(183,819)	$ (183,745)
Balances excluding revenue standard [Member]
Assets
Accounts receivable and unbilled revenue, net	307
Liabilities
Deferred revenues	707
Equity
Accumulated deficit	(185,466)
Impact of Revenue Standard [Member]
Assets
Accounts receivable and unbilled revenue, net	1,486
Liabilities
Deferred revenues	(161)
Equity
Accumulated deficit	$ 1,647

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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