Consolidated Statements of Changes in Convertible Preferred Units, Members' (Deficit) and Stockholders' Equity (Unaudited) - USD ($)	Total	Electrocore, LLC	ElectroCore, Inc	Conversion Of Series A Preferred Units	Conversion of Series B Preferred Units	Series A Preferred Units	Series A Preferred Units Conversion Of Series A Preferred Units	Series B Preferred Units	Series B Preferred Units Conversion of Series B Preferred Units	Common Units	Common Units Conversion of Member Common Units	Common Stock	Common Stock Conversion Of Series A Preferred Units	Common Stock Conversion of Series B Preferred Units	Common Stock Conversion of Member Common Units	Common Stock Profits Interests	Additional Paid-in Capital	Additional Paid-in Capital Conversion Of Series A Preferred Units	Additional Paid-in Capital Conversion of Series B Preferred Units	Additional Paid-in Capital Conversion of Member Common Units	Accumulated Deficit	Accumulated Deficit Electrocore, LLC	Accumulated Deficit ElectroCore, Inc	Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income Electrocore, LLC	(Deficit)/Equity attributable to Electrocore LLC and electroCore, Inc. subsidiaries and affiliate	(Deficit)/Equity attributable to Electrocore LLC and electroCore, Inc. subsidiaries and affiliate Electrocore, LLC	(Deficit)/Equity attributable to Electrocore LLC and electroCore, Inc. subsidiaries and affiliate ElectroCore, Inc	(Deficit)/Equity attributable to Electrocore LLC and electroCore, Inc. subsidiaries and affiliate Conversion Of Series A Preferred Units	(Deficit)/Equity attributable to Electrocore LLC and electroCore, Inc. subsidiaries and affiliate Conversion of Series B Preferred Units	Noncontrolling Interest	Noncontrolling Interest Electrocore, LLC
Balances, beginning of period at Dec. 31, 2017	$ (89,467,556)					$ 53,518,463		$ 68,755,544		$ 40,180,619							$ 22,596,485				$ (152,928,928)			$ 80,213		$ (90,071,611)					$ 604,055
Balances, beginning of period, shares at Dec. 31, 2017						70,918,506		105,186,020		218,982,140
Net loss attributable subsidiaries and affiliates		$ (9,443,535)																				$ (9,498,540)					$ (9,498,540)					$ 55,005
Other comprehensive income	(139,261)																							(139,261)		(139,261)
Noncontrolling interest distributions	(49,920)																														(49,920)
Stock and Unit-based compensation (net of forfeitures)	267,145																267,145									267,145
Balances, end of period at Mar. 31, 2018	(98,833,127)					$ 53,518,463		$ 68,755,544		$ 40,180,619							22,863,630				(162,427,468)			(59,048)		(99,442,267)					609,140
Balances, end of period, shares at Mar. 31, 2018						70,918,506		105,186,020		218,982,140		0
Balances, beginning of period at Dec. 31, 2017	(89,467,556)					$ 53,518,463		$ 68,755,544		$ 40,180,619							22,596,485				(152,928,928)			80,213		(90,071,611)					604,055
Balances, beginning of period, shares at Dec. 31, 2017						70,918,506		105,186,020		218,982,140
Net loss attributable subsidiaries and affiliates	(40,429,571)
Balances, end of period at Sep. 30, 2018	80,394,815											$ 29,450					102,694,632				(22,995,331)			30,454		79,759,205					635,610
Balances, end of period, shares at Sep. 30, 2018												29,450,034
Balances, beginning of period at Mar. 31, 2018	(98,833,127)					$ 53,518,463		$ 68,755,544		$ 40,180,619							22,863,630				(162,427,468)			(59,048)		(99,442,267)					609,140
Balances, beginning of period, shares at Mar. 31, 2018						70,918,506		105,186,020		218,982,140		0
Net loss attributable subsidiaries and affiliates		$ (11,619,797)	$ (6,162,299)																			$ (11,619,797)	$ (6,162,299)		$ (5,085)		$ (11,624,882)	$ (6,162,299)				$ 5,085
Reclass of accumulated deficit to APIC																	(174,047,265)				174,047,265
Other comprehensive income	100,788																							105,873		105,873					(5,085)
Temporary equity conversion of units to common stock				$ 53,518,463	$ 68,755,544		$ (53,518,463)		$ (68,755,544)									$ 53,514,523	$ 68,749,700										$ 53,518,463	$ 68,755,544
Temporary equity conversion of units to common stock, shares							(70,918,506)		(105,186,020)
Conversion of units to common stock, shares											(218,982,140)	1,345,230	3,939,917	5,843,668	12,099,280	1,345,230
Conversion of units to common stock	1,345										$ (40,180,619)	$ 1,345	$ 3,940	$ 5,844	$ 12,099	$ 1,345				$ 40,168,520						1,345
Stock dividend issued to Series A preferred holders												$ 242					3,628,850				(3,629,092)
Stock dividend issued to Series A preferred holders, shares												241,939
Common stock issued related to initial public offering	89,698,655											$ 5,980					89,692,675									89,698,655
Common stock issued related to initial public offering, shares												5,980,000
Issuance costs related to initial public offering	(12,012,086)																(12,012,086)									(12,012,086)
Reclass of warrant liability to equity	4,110,467																4,110,467									4,110,467
Noncontrolling interest distributions	26,469																														26,469
Stock and Unit-based compensation (net of forfeitures)	5,364,448																5,364,448									5,364,448
Balances, end of period at Jun. 30, 2018	92,948,870											$ 29,450					102,033,462				(9,791,391)			41,740		92,313,261					635,609
Balances, end of period, shares at Jun. 30, 2018												29,450,034
Net loss attributable subsidiaries and affiliates	(13,203,940)		$ (13,203,940)																				$ (13,203,940)					$ (13,203,940)
Other comprehensive income	(11,286)																							(11,286)		(11,286)
Noncontrolling interest distributions	1																														1
Stock and Unit-based compensation (net of forfeitures)	661,170																661,170									661,170
Balances, end of period at Sep. 30, 2018	80,394,815											$ 29,450					102,694,632				(22,995,331)			30,454		79,759,205					635,610
Balances, end of period, shares at Sep. 30, 2018												29,450,034
Balances, beginning of period at Dec. 31, 2018	66,185,701											$ 29,450					103,791,013				(38,331,215)			60,843		65,550,091					635,610
Balances, beginning of period, shares at Dec. 31, 2018												29,450,035
Net loss attributable subsidiaries and affiliates	(13,861,530)																				(13,861,530)					(13,861,530)
Other comprehensive income	83,713																							83,713		83,713
Issuance of warrants in settlement of lawsuit	16,692																16,692									16,692
Stock issuance												$ 183					(183)
Stock issuance, shares												183,205
Stock and Unit-based compensation (net of forfeitures)	744,032																744,032									744,032
Balances, end of period at Mar. 31, 2019	53,168,608											$ 29,633					104,551,554				(52,192,745)			144,556		52,532,998					635,610
Balances, end of period, shares at Mar. 31, 2019												29,633,240
Balances, beginning of period at Dec. 31, 2018	66,185,701											$ 29,450					103,791,013				(38,331,215)			60,843		65,550,091					635,610
Balances, beginning of period, shares at Dec. 31, 2018												29,450,035
Net loss attributable subsidiaries and affiliates	(36,649,794)
Balances, end of period at Sep. 30, 2019	32,294,514											$ 29,468					106,498,093				(74,981,008)			112,351		31,658,904					635,610
Balances, end of period, shares at Sep. 30, 2019												29,468,966
Balances, beginning of period at Mar. 31, 2019	53,168,608											$ 29,633					104,551,554				(52,192,745)			144,556		52,532,998					635,610
Balances, beginning of period, shares at Mar. 31, 2019												29,633,240
Net loss attributable subsidiaries and affiliates	(12,100,520)																				(12,100,520)					(12,100,520)
Other comprehensive income	(39,098)																							(39,098)		(39,098)
Stock cancellations												$ (52)					52
Stock cancellations, shares												(51,549)
Stock and Unit-based compensation (net of forfeitures)	726,799																726,799									726,799
Balances, end of period at Jun. 30, 2019	41,755,789											$ 29,581					105,278,405				(64,293,265)			105,458		41,120,179					635,610
Balances, end of period, shares at Jun. 30, 2019												29,581,691
Net loss attributable subsidiaries and affiliates	(10,687,743)																				(10,687,743)					(10,687,743)
Other comprehensive income	6,893																							6,893		6,893
Stock cancellations												$ (141)					141
Stock cancellations, shares												(140,927)
Stock issuance under the employee stock purchase plan												$ 28					(28)
Stock issuance under the employee stock purchase plan, shares												28,202
Stock and Unit-based compensation (net of forfeitures)	1,219,575																1,219,575									1,219,575
Balances, end of period at Sep. 30, 2019	$ 32,294,514											$ 29,468					$ 106,498,093				$ (74,981,008)			$ 112,351		$ 31,658,904					$ 635,610
Balances, end of period, shares at Sep. 30, 2019												29,468,966