Represents amount of transfers between fair value measurement levels.

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- References

No definition available.

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- References

No definition available.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers Between Fair Value Measurement Levels	$ 0		$ 0
Cash and Cash Equivalents
Cash and Cash Equivalents, at Carrying Value	24,278	$ 62,780	$ 81,548	$ 14,668
Available-for-Sale Securities:
Available-for-sale Securities	18,539
U.S. Government-sponsored Securities
Available-for-Sale Securities:
Available-for-sale Securities	3,706
Corporate Debt Securities
Available-for-Sale Securities:
Available-for-sale Securities	14,833
Level 1
Assets:
Total assets	23,515	62,004
Level 1 \| Money market funds
Cash and Cash Equivalents
Cash and Cash Equivalents, at Carrying Value	23,515	62,004
Level 2
Assets:
Total assets	18,539
Level 2 \| U.S. Government-sponsored Securities
Available-for-Sale Securities:
Available-for-sale Securities	3,706
Level 2 \| Corporate Debt Securities
Available-for-Sale Securities:
Available-for-sale Securities	14,833
Recurring
Assets:
Total assets	42,054	62,004
Recurring \| U.S. Government-sponsored Securities
Available-for-Sale Securities:
Available-for-sale Securities	3,706
Recurring \| Corporate Debt Securities
Available-for-Sale Securities:
Available-for-sale Securities	14,833
Recurring \| Money market funds
Cash and Cash Equivalents
Cash and Cash Equivalents, at Carrying Value	$ 23,515	$ 62,004