Restructuring Costs - Schedule Of Restructuring Costs (Details)	3 Months Ended							9 Months Ended		18 Months Ended
	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2014 position
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 849,257	$ 884,668	$ 914,808	$ 941,978	$ 958,100	$ 461,362	$ 648,399	$ 914,808	$ 648,399
Provisions/Additions	384,829	202,679	157,693	310,314	315,283	809,245	(173,263)	745,201	951,265
Utilized/Paid	(471,503)	(238,090)	(187,833)	(337,484)	(331,405)	(312,507)	(13,774)
Ending Balance	762,583	849,257	884,668	914,808	941,978	958,100	461,362	762,583	941,978
Restructuring Costs Under the 2013 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | position										100
Facility and Other Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	387,895	423,306	453,446	480,616	496,738	0	0	453,446	0
Provisions/Additions	170,779	202,679	157,693	310,314	315,283	809,245	0
Utilized/Paid	(257,453)	(238,090)	(187,833)	(337,484)	(331,405)	(312,507)	0
Ending Balance	301,221	387,895	423,306	453,446	480,616	496,738	0	301,221	480,616
Restructuring Costs Under 2019 Plan [Member] [Domain]
Restructuring Reserve [Roll Forward]
Beginning Balance	461,362	461,362	461,362	461,362	461,362	461,362	648,399	461,362	648,399
Provisions/Additions	214,050	0	0	0	0	0	(173,263)
Utilized/Paid	(214,050)	0	0	0	0	0	(13,774)
Ending Balance	$ 461,362	$ 461,362	$ 461,362	$ 461,362	$ 461,362	$ 461,362	$ 461,362	$ 461,362	$ 461,362