Stockholders' Equity (Details 5) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Class of Warrant or Right [Line Items]
Outstanding warrants, Beginning Balance	6,046,540	5,996,753
Warrants Issued	1,191,525	1,597,697
Warrants Exercised	(215,995)	(1,469,671)
Warrants Expired	0	(1,469,671)
Outstanding warrants, Ending Balance	7,020,070	6,046,540
Warrant Transactions [Member] | ZNWAA [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 2.00	$ 2.00
Warrant Termination Date	Jan. 31, 2021	Jan. 31, 2021
Outstanding warrants, Beginning Balance	1,498,804
Warrants Issued
Warrants Exercised		(25,813)
Warrants Expired
Outstanding warrants, Ending Balance	1,498,804	1,498,804
Warrant Transactions [Member] | ZNWAD [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00	$ 1.00
Warrant Termination Date	May 02, 2021	May 02, 2021
Outstanding warrants, Beginning Balance	243,853
Warrants Issued
Warrants Exercised		(50,481)
Warrants Expired
Outstanding warrants, Ending Balance	243,853	243,853
Warrant Transactions [Member] | ZNWAE [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00	$ 1.00
Warrant Termination Date	May 02, 2021	May 02, 2021
Outstanding warrants, Beginning Balance	2,144,510
Warrants Issued		10,493
Warrants Exercised	(40)	(894,102)
Warrants Expired
Outstanding warrants, Ending Balance	2,144,470	2,144,510
Warrant Transactions [Member] | ZNWAF [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00	$ 1.00
Warrant Termination Date	Aug. 14, 2021	Aug. 14, 2021
Outstanding warrants, Beginning Balance	359,610
Warrants Issued		100
Warrants Exercised	(25)	(100,721)
Warrants Expired
Outstanding warrants, Ending Balance	359,585	359,610
Warrant Transactions [Member] | ZNWAG [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00	$ 1.00
Warrant Termination Date	Jan. 08, 2021	Jan. 08, 2021
Outstanding warrants, Beginning Balance	240,578
Warrants Issued		6,030
Warrants Exercised		(179,752)
Warrants Expired
Outstanding warrants, Ending Balance	240,578	240,578
Warrant Transactions [Member] | ZNWAI [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 3.00	$ 3.00
Warrant Termination Date	Jun. 29, 2021	Jun. 29, 2021
Outstanding warrants, Beginning Balance	640,735
Warrants Issued		656,274
Warrants Exercised	(5)	(15,539)
Warrants Expired
Outstanding warrants, Ending Balance	640,730	640,735
Warrant Transactions [Member] | ZNWAH [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 5.00	$ 5.00
Warrant Termination Date	Apr. 19, 2021	Apr. 19, 2021
Outstanding warrants, Beginning Balance	372,400
Warrants Issued		373,900
Warrants Exercised		(1,500)
Warrants Expired
Outstanding warrants, Ending Balance	372,400	372,400
Warrant Transactions [Member] | ZNWAJ [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00	$ 1.00
Warrant Termination Date	Oct. 29, 2021	Oct. 29, 2021
Outstanding warrants, Beginning Balance	546,050
Warrants Issued		550,900
Warrants Exercised	(50)	(4,850)
Warrants Expired
Outstanding warrants, Ending Balance	546,000	546,050
Warrant Transactions [Member] | ZNWAK [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 0.01
Warrant Termination Date	Feb. 25, 2021
Outstanding warrants, Beginning Balance
Warrants Issued	673,600
Warrants Exercised	(215,875)
Warrants Expired
Outstanding warrants, Ending Balance	457,725
Warrant Transactions [Member] | ZNWAL [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 2.00
Warrant Termination Date	Aug. 26, 2021
Outstanding warrants, Beginning Balance
Warrants Issued	517,925
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	517,925
Warrant Transactions [Member] | ZNWAC [Member]
Class of Warrant or Right [Line Items]
Exercise Price		$ 1.00
Warrant Termination Date		May 02, 2018
Outstanding warrants, Beginning Balance
Warrants Issued
Warrants Exercised		(196,913)
Warrants Expired		(78,239)
Outstanding warrants, Ending Balance