Discontinued Operations - Operating Results of PCT Segment (Details) - USD ($)		12 Months Ended
	May 18, 2017	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations		$ 38,399,236	$ (2,051,782)
PCT Segment [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		16,039,000	42,043,000
Cost of revenues		(15,321,000)	(35,519,000)
Research and development		(257,000)	(800,000)
Selling, general, and administrative		(3,251,000)	(7,558,000)
Other expense		(14,000)	(80,000)
Provision for income taxes		(10,541,000)	(138,000)
Gain on sale of segment	$ 51,744,000	51,744,000	0
Income (loss) from discontinued operations		$ 38,399,000	$ (2,052,000)