XML 92 R38.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summary of Significant Accounting Policies (Cash, Cash Equivalents and Investments) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash and cash equivalents [Member]    
Investment Holdings [Line Items]    
Amortized Cost $ 22,916us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember		 $ 33,047us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
Fair Market Value 22,916us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember		 33,047us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
Balance Per Balance Sheet 22,916us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember		 33,047us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
Cash and cash equivalents [Member] | Cash [Member]    
Investment Holdings [Line Items]    
Contracted Maturity, description
Demand
Demand
Amortized Cost 13,342us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember		 19,250us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember
Fair Market Value 13,342us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember		 19,250us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember
Balance Per Balance Sheet 13,342us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember		 19,250us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CashMember
Cash and cash equivalents [Member] | Money market funds [Member]    
Investment Holdings [Line Items]    
Contracted Maturity, description
Demand
Demand
Amortized Cost 9,574us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember		 13,797us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember
Fair Market Value 9,574us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember		 13,797us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember
Balance Per Balance Sheet 9,574us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember		 13,797us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_CashAndCashEquivalentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_MoneyMarketFundsMember
Short-term investments [Member]    
Investment Holdings [Line Items]    
Amortized Cost   3,061us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
Fair Market Value   3,063us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
Balance Per Balance Sheet   3,061us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
Short-term investments [Member] | Certificates of deposit [Member]    
Investment Holdings [Line Items]    
Amortized Cost   960us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CertificatesOfDepositMember
Fair Market Value   961us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CertificatesOfDepositMember
Balance Per Balance Sheet   960us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CertificatesOfDepositMember
Short-term investments [Member] | Certificates of deposit [Member] | Minimum [Member]    
Investment Holdings [Line Items]    
Contracted Maturity   110 years
Short-term investments [Member] | Certificates of deposit [Member] | Maximum [Member]    
Investment Holdings [Line Items]    
Contracted Maturity   163 years
Short-term investments [Member] | Corporate debentures [Member]    
Investment Holdings [Line Items]    
Amortized Cost   2,101us-gaap_InvestmentOwnedAtCost
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Fair Market Value   2,102us-gaap_InvestmentOwnedAtFairValue
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Balance Per Balance Sheet   $ 2,101us-gaap_InvestmentOwnedBalancePrincipalAmount
/ invest_InvestmentAxis
= us-gaap_ShortTermInvestmentsMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Short-term investments [Member] | Corporate debentures [Member] | Minimum [Member]    
Investment Holdings [Line Items]    
Contracted Maturity   23 years
Short-term investments [Member] | Corporate debentures [Member] | Maximum [Member]    
Investment Holdings [Line Items]    
Contracted Maturity   96 years