Investments (Tables)

6 Months Ended

Jun. 30, 2014

Investments [Abstract]

Investment Securities Stated at Fair Value

Assets or liabilities that have recurring fair value measurements are shown below as of June 30, 2014, and December 31, 2013:

As of June 30, 2014:

			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant  Other Observable Inputs		Significant Unobservable Inputs
Description	June 30, 2014		(Level 1)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	391,650,469	$	391,650,469	$	—	$	—
Short-Term Investments:
Other	65		65		—		—
Long-Term Investments:
Common Stocks	23,987,403		23,987,403		—		—
Mutual Funds – Equity	85,810,383		85,810,383		—		—
Total	$	501,448,320	$	501,448,320	$	—	$	—

As of December 31, 2013:

			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	December 31, 2013		(Level 1)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	309,591,724	$	309,591,724	$	—	$	—
Long-Term Investments:
Common Stocks	33,282,439		33,282,439		—		—
Mutual Funds – Equity	73,723,083		73,723,083		—		—
Total	$	416,597,246	$	416,597,246	$	—	$	—

Schedule of Amortized Cost, Unrealized Gains And Losses, And Market Value of Investment Securities

The amortized cost, unrealized gains and losses, and market value of investment securities are shown as of June 30, 2014, and December 31, 2013:

As of June 30, 2014:

			Unrealized
	Cost		Gains		Losses			Market Value
Short-Term Investments:
Other	$	65	$	—	$	—		$	65
Long-Term Investments:
Common Stocks	15,871,777		8,399,886		(284,260		)	23,987,403
Mutual Funds – Equity	70,322,085		15,489,334		(1,036		)	85,810,383
Total	$	86,193,927	$	23,889,220	$	(285,296	)	$	109,797,851

As of December 31, 2013:

			Unrealized
	Cost		Gains		Losses			Market Value
Long-Term Investments:
Common Stocks	$	22,799,035	$	10,532,007	$	(48,603	)	$	33,282,439
Mutual Funds – Equity	54,256,577		19,466,506		—			73,723,083
Total	$	77,055,612	$	29,998,513	$	(48,603	)	$	107,005,522

Schedule of Unrealized Loss on Investments

Unrealized losses on investments as of June 30, 2014, are as follows:

	Aggregate Unrealized Losses		Aggregate Fair Value
Less than one year	$	285,296	$	4,179,684

Unrealized losses on investments as of December 31, 2013, are as follows:

	Aggregate Unrealized Losses		Aggregate Fair Value
Less than one year	$	48,603	$	1,886,080