Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities (Details 6) - Jun. 30, 2015 - USD ($)	Total
Fair values transfers between Level 1 and Level 2
Fair value assets transfer from level 1 to level 2	$ 0
Fair value liabilities transfer from level 1 to level 2	0
Fair value assets transfer from level 2 to level 1	0
Fair value liabilities transfer from level 2 to level 1	0
Investment Securities
Level 3 Investment Securities
Balance at the beginning of the year	142,140,000
Net realized and unrealized gains (losses) included in earnings	1,089,000
Net realized and unrealized gains (losses) included in other comprehensive income (loss)	(693,000)
Settlements	(134,471,000)
Balance at the end of the year	$ 8,065,000

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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