Investment in Joint Ventures (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
Investment in Joint Ventures (Details) - USD ($)	Jan. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Mar. 31, 2015	May 15, 2013
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Investment in joint ventures		$ 0			$ 0		$ 2,098,529
Credit loss							11,996,247
Senior notes		55,000,000			55,000,000
Finance income		0			0	$ 1,152,580
Maximum
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Finance income		0
ICON Mauritius MI II
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Credit loss			$ 2,092,652	$ (6,421,994)
Jurong Aromatics Corporation
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Total subordinated credit facility									$ 208,038,290
Interest rate									12.50%
Credit loss			$ 5,365,776				31,637,426
Tolling period	1 year
Financing Receivable, Allowance for Credit Losses		0			0		5,365,776
Jurong Aromatics Corporation \| Minimum
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Interest rate								15.50%	12.50%
Jurong Aromatics Corporation \| Maximum
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Interest rate									15.00%
Jurong Aromatics Corporation \| ICON Mauritius MI II
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Investment in joint ventures		$ 0			$ 0		$ 2,098,529
Credit loss				$ (17,342,915)
ICON ECI Fund Fifteen LP \| Jurong Aromatics Corporation
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Ownership percentage									40.00%
Fund Twelve \| Jurong Aromatics Corporation
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Ownership percentage									21.00%
ICON Leasing Fund Eleven, LLC \| Jurong Aromatics Corporation
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Ownership percentage									39.00%
Total subordinated credit facility									$ 28,462,500
Investment in joint ventures									$ 11,100,376

ICON LEASING FUND ELEVEN, LLC 10-Q