XML 22 R28.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Cash and Cash Equivalents and Investments (Details 1) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Cash and Cash Equivalents |  |
Fair Value |  |
Amortized Cost | $ 41,960 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_CashMember | $ 137,266 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_CashMember
Gross Unrealized Gains | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_CashMember | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_CashMember
Gross Unrealized Losses | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_CashMember | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_CashMember
Estimated Fair Value | 41,960 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_CashMember | 137,266 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_CashMember
Certificates of Deposit |  |
Fair Value |  |
Amortized Cost | 552 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember | 552 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember
Gross Unrealized Gains | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember
Gross Unrealized Losses | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember | 0 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember
Estimated Fair Value | 552 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember | 552 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_CertificatesOfDepositMember
U.S. Treasury Securities |  |
Fair Value |  |
Amortized Cost | 272,562 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember | 201,584 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember
Gross Unrealized Gains | 50 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember | 3 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember
Gross Unrealized Losses | (27)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember | (66)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember
Estimated Fair Value | 272,585 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember | 201,521 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_USTreasurySecuritiesMember
Total Short-term Investments |  |
Fair Value |  |
Amortized Cost | 273,114 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember | 202,136 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember
Gross Unrealized Gains | 50 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember | 3 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember
Gross Unrealized Losses | (27)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember | (66)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember
Estimated Fair Value | 273,137 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember | 202,073 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_ShortTermInvestmentsMember
Total Cash and Cash Equivalents and Investments |  |
Fair Value |  |
Amortized Cost | 315,074 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_InvestmentsMember | 339,402 us-gaap_AvailableForSaleSecuritiesAmortizedCost / invest_InvestmentAxis = us-gaap_InvestmentsMember
Gross Unrealized Gains | 50 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_InvestmentsMember | 3 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / invest_InvestmentAxis = us-gaap_InvestmentsMember
Gross Unrealized Losses | (27)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_InvestmentsMember | (66)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / invest_InvestmentAxis = us-gaap_InvestmentsMember
Estimated Fair Value | $ 315,097 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_InvestmentsMember | $ 339,339 us-gaap_AvailableForSaleSecuritiesCurrent / invest_InvestmentAxis = us-gaap_InvestmentsMember

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: 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_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 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=6871852&loc=d3e26626-111562 + Details
Name: | us-gaap_AvailableForSaleSecuritiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | invest_InvestmentAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=us-gaap_InvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |