Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 5,022	$ 9,276	$ 15,781	$ 3,970
Total assets	5,022	9,276
Liabilities:
Warrants potentially settleable in cash	1,869	4,115
Total liabilities	1,869	4,115
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Cash and cash equivalents	5,022	9,276
Total assets	5,022	9,276
Liabilities:
Warrants potentially settleable in cash
Total liabilities
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash and cash equivalents
Total assets
Liabilities:
Warrants potentially settleable in cash
Total liabilities
Unobservable Inputs (Level 3) [Member]
Assets:
Cash and cash equivalents
Total assets
Liabilities:
Warrants potentially settleable in cash	1,869	4,115
Total liabilities	$ 1,869	$ 4,115

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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