Investment in Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2016

Investment in Preferred Stock [Abstract]

Schedule of Changes in Level 3 Investments

The changes in the Level 3 investment during the year ended December 31, 2016 were as follows:

	2016
Beginning balance	$	—
Receipt of Preferred Shares as consideration for amendments to collaboration agreements	120,000
Additional Preferred Shares received as dividend income	7,421
Unrealized appreciation in the fair value of the investment in preferred stock	2,124
Ending balance	$	129,545