XML 57 R44.htm IDEA: XBRL DOCUMENT v3.3.1.900

Note 4 - Fair Value of Financial Instruments (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents:
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents:	$ 61,385,000	$ 69,552,000
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents:
Money Market Funds [Member]
Cash equivalents:	61,385,000	$ 69,552,000
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents:
Investments
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents:	250,000	$ 3,000,000
Investments	25,750,000	$ 6,750,000
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents:
Investments
Certificates of Deposit [Member]
Cash equivalents:	250,000	$ 3,000,000
Investments	$ 25,750,000	$ 6,750,000
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investments
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	$ 2,001,000
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Investments
Corporate Debt Securities [Member]
Investments	$ 2,001,000
Fair Value, Inputs, Level 1 [Member]
Cash equivalents:
Investments
Fair Value, Inputs, Level 2 [Member]
Cash equivalents:	$ 61,635,000	$ 72,552,000
Investments	$ 27,751,000
Fair Value, Inputs, Level 3 [Member]
Cash equivalents:
Investments
Cash equivalents:	$ 61,635,000	$ 72,552,000
Investments	$ 27,751,000	$ 6,750,000

X

- Definition

Fair value portion 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

+ Details

Name:	us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_MarketableSecuritiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: