XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Investments (Schedule of Amortized Cost, Unrealized Gains And Losses, And Market Value of Investment Securities) (Details) - USD ($) | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cash & Cash Equivalents | $ 499,493,964 | $ 551,557,527
Cost | 217,452,974 | 98,427,114
Unrealized Gains | 5,454,908 | 6,146,311
Unrealized Losses | (4,114,992) | (4,869,531)
Market Value | 218,792,890 | 99,703,894
Investments and Cash | 718,286,854 | 651,261,421
Short-term Investments [Member] | Certificates of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 130,000,000 |
Unrealized Gains | 0 |
Unrealized Losses | 0 |
Market Value | 130,000,000 |
Short-term Investments [Member] | US Government Agencies Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 10,022,758 | 3,013,482
Unrealized Gains | 4,372 | 0
Unrealized Losses | 0 | (2,622)
Market Value | 10,027,130 | 3,010,860
Short-term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost |  | 1,512,405
Unrealized Gains |  | 0
Unrealized Losses |  | (390)
Market Value |  | 1,512,015
Short-term Investments [Member] | Other Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 41,736 | 24,480
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Market Value | 41,736 | 24,480
Short-term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 5,172,416 |
Unrealized Gains | 94,250 |
Unrealized Losses | 0 |
Market Value | 5,266,666 |
Long-Term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 1,984,889 |
Unrealized Gains | 1,730 |
Unrealized Losses | 0 |
Market Value | 1,986,619 |
Long-Term Investments [Member] | Common Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 13,987,384 | 17,395,641
Unrealized Gains | 3,724,622 | 4,078,912
Unrealized Losses | (823,075) | (1,019,749)
Market Value | 16,888,931 | 20,454,804
Long-Term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 55,994,531 | 76,481,106
Unrealized Gains | 1,619,354 | 2,067,399
Unrealized Losses | (3,291,917) | (3,846,770)
Market Value | 54,321,968 | 74,701,735
Long-Term Investments [Member] | Preferred Stock [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 249,260 |
Unrealized Gains | 10,580 |
Unrealized Losses | 0 |
Market Value | 259,840 |
Fair Value, Inputs, Level 1 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cash & Cash Equivalents | 499,493,964 | 551,557,527
Investments and Cash | 701,006,439 | 646,738,546
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | Certificates of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 130,000,000 |
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | US Government Agencies Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value |  | 0
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | Other Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 41,736 | 24,480
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 1 [Member] | Long-Term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 1 [Member] | Long-Term Investments [Member] | Common Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 16,888,931 | 20,454,804
Fair Value, Inputs, Level 1 [Member] | Long-Term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 54,321,968 | 74,701,735
Fair Value, Inputs, Level 1 [Member] | Long-Term Investments [Member] | Preferred Stock [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 259,840 |
Fair Value, Inputs, Level 2 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cash & Cash Equivalents | 0 | 0
Investments and Cash | 17,280,415 | 4,522,875
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | Certificates of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | US Government Agencies Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 10,027,130 | 3,010,860
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value |  | 1,512,015
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | Other Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 5,266,666 |
Fair Value, Inputs, Level 2 [Member] | Long-Term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 1,986,619 |
Fair Value, Inputs, Level 2 [Member] | Long-Term Investments [Member] | Common Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Long-Term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Long-Term Investments [Member] | Preferred Stock [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 3 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cash & Cash Equivalents | 0 | 0
Investments and Cash | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] | Certificates of Deposit [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] | US Government Agencies Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value |  | 0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] | Other Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 3 [Member] | Long-Term Investments [Member] | Corporate Bond Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 |
Fair Value, Inputs, Level 3 [Member] | Long-Term Investments [Member] | Common Stocks [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Long-Term Investments [Member] | Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | 0 | $ 0
Fair Value, Inputs, Level 3 [Member] | Long-Term Investments [Member] | Preferred Stock [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Market Value | $ 0 |

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 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 Sum of investments and unrestricted cash as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1,2) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_InvestmentsAndCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 + Details
Name: | us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_OtherDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesByTypeAxis=us-gaap_OtherLongTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_PreferredStockMember
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: |