Consolidated Statement of Income - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest and fees on loans				$ 608		$ 1,283
Interest income		$ 32,644
Total interest expense		7,925
Net interest income		24,719
Provision for loan losses		30,576
Net interest loss after provision for loan losses		(5,857)
Other income (loss)
Sponsorship and race winnings		5,228
Other Expense
Race team related		(2,540)
Loss before income taxes/net investment loss before taxes		(17,905)
Income tax benefit		4,021		7,018	$ 4,661	8,990
Net loss after taxes/net decrease on net assets resulting from operations		(13,884)
Bank Holding Company Accounting [Member]
Interest and fees on loans		32,026
Medallion lease income		30
Interest and dividends on investment securities		588
Total interest income/total investment income	[1]	32,644
Interest on deposits		4,200
Interest on short term borrowings		1,859
Interest on long term debt		1,866
Total interest expense	[2]	7,925
Net interest income		24,719
Provision for loan losses	[3]	30,576
Net interest loss after provision for loan losses		(5,857)
Other income (loss)
Sponsorship and race winnings		5,228
Impairment of equity investments		(474)
Writedown of loan collateral in process of foreclosure		(96)
Other income		220
Total other income		4,878
Other Expense
Salaries and employee benefits		5,639
Race team related		2,540
Professional fees		2,246
Loan servicing fee		1,128
Collection costs		837
Travel, meals and entertainment		603
Rent expense		591
Regulatory fees		582
Amortization of intangible assets		361
Other expenses	[4]	2,399
Total other expenses		16,926
Loss before income taxes/net investment loss before taxes	[5]	(17,905)
Income tax benefit		4,021
Net loss after taxes/net investment loss after taxes		(13,884)
Net loss after taxes/net decrease on net assets resulting from operations		(13,884)
Less: income attributable to the noncontrolling interest		763
Total net income (loss) attributable to Medallion Financial Corp./net decrease on net assets resulting from operations		$ (14,647)
Basic and diluted net loss per share		$ (0.60)
Distributions declared per share		$ 0
Weighted average common shares outstanding Basic and diluted		24,230,815
Investment Company Accounting [Member]
Interest income			$ 3,287	2,915		6,385
Medallion lease income			40	52		119
Interest and dividends on investment securities			14
Dividends and interest income on short-term investments				11		15
Total interest income/total investment income	[1]		4,033	3,787		8,037
Interest expense			3,551	3,408		6,742
Total interest expense	[2]		3,551	3,408		6,742
Net interest income			482	379		1,295
Net interest loss after provision for loan losses			482	379		1,295
Other income (loss)
Other income			60	12		14
Total other income			60	12		14
Other Expense
Salaries and employee benefits			2,349	2,097		2,861
Professional fees			723	616		1,308
Travel, meals and entertainment			206	220		415
Rent expense			243	262		527
Other expenses	[4]		587	487		796
Total other expenses			4,108	3,682		5,907
Loss before income taxes/net investment loss before taxes	[5]		(3,566)	(3,291)		(4,598)
Income tax benefit			336	1,998		2,870
Net loss after taxes/net investment loss after taxes			(3,230)	(1,293)		(1,728)
Net realized gains (losses) on investments(5)	[6]		(34,745)	1,996		2,841
Income tax benefit			8,426
Total net realized gains (losses) on investments			(26,319)	1,996		2,841
Net change in unrealized appreciation on Medallion bank and other controlled subsidiaries			29,115	930		9,054
Net change in unrealized depreciation on investments other than securities			(1,915)
Net change in unrealized depreciation on investments			(4,403)	(11,450)		(19,973)
Income tax (provision) benefit			(8,122)	5,020		6,120
Net unrealized appreciation (depreciation) on investments			14,675	(5,500)		(4,799)
Net realized/unrealized losses on investments			(11,644)	(3,504)		(1,958)
Net loss after taxes/net decrease on net assets resulting from operations			(14,874)	(4,797)		(3,686)
Total net income (loss) attributable to Medallion Financial Corp./net decrease on net assets resulting from operations			$ (14,874)	$ (4,797)		$ (3,686)
Basic and diluted net loss per share			$ (0.62)	$ (0.20)		$ (0.15)
Distributions declared per share			$ 0	$ 0		$ 0
Weighted average common shares outstanding Basic and diluted			24,154,879	23,925,567		23,909,344
Investment Company Accounting [Member] | Controlled Subsidiary Investment [Member]
Interest income			$ 10	$ 44		$ 126
Dividend income from controlled subsidiaries			28
Investment Company Accounting [Member] | Affiliate Investment [Member]
Interest income			$ 654	$ 765		$ 1,392
Bank Holding Company and Investment Company [Member]
Interest and fees on loans					32,026
Interest income					3,287
Medallion lease income					70
Interest and dividends on investment securities					602
Total interest income/total investment income	[1]				36,677
Interest on deposits					4,200
Interest on short term borrowings					1,859
Interest on long term debt					1,866
Interest expense					3,551
Total interest expense	[2]				11,476
Net interest income					25,201
Provision for loan losses					30,576
Net interest loss after provision for loan losses					(5,375)
Other income (loss)
Sponsorship and race winnings					5,228
Impairment of equity investments					(474)
Writedown of loan collateral in process of foreclosure					(96)
Other income					280
Total other income					4,938
Other Expense
Salaries and employee benefits					7,988
Race team related					2,540
Professional fees					2,969
Loan servicing fee					1,128
Collection costs					837
Travel, meals and entertainment					809
Rent expense					834
Regulatory fees					582
Amortization of intangible assets					361
Other expenses	[4]				2,986
Total other expenses					21,034
Loss before income taxes/net investment loss before taxes	[5]				(21,471)
Income tax benefit					4,357
Net loss after taxes/net investment loss after taxes					(17,114)
Net realized gains (losses) on investments(5)	[6]				(34,745)
Income tax benefit					8,426
Total net realized gains (losses) on investments					(26,319)
Net change in unrealized appreciation on Medallion bank and other controlled subsidiaries					29,115
Net change in unrealized depreciation on investments other than securities					(1,915)
Net change in unrealized depreciation on investments					(4,403)
Income tax (provision) benefit					(8,122)
Net unrealized appreciation (depreciation) on investments					14,675
Net realized/unrealized losses on investments					(11,644)
Net loss after taxes/net decrease on net assets resulting from operations					(28,758)
Less: income attributable to the noncontrolling interest					763
Total net income (loss) attributable to Medallion Financial Corp./net decrease on net assets resulting from operations					$ (29,521)
Basic and diluted net loss per share					$ (1.22)
Distributions declared per share					$ 0
Weighted average common shares outstanding Basic and diluted					24,193,057
Bank Holding Company and Investment Company [Member] | Controlled Subsidiary Investment [Member]
Interest income					$ 10
Dividend income from controlled subsidiaries					28
Bank Holding Company and Investment Company [Member] | Affiliate Investment [Member]
Interest income					$ 654

[1] (1) Included in interest and investment income is $487 and $978 of paid in kind interest for the three and six months ended June 30, 2018 and $502 and $990 for the comparable 2017 periods.

[2] (2) Average borrowings outstanding were $1,197,450 and $1,201,386, and the related average borrowing costs were 2.65% and 1.93% for the three and six months ended June 30, 2018, and were $335,010 and $338,459 and 4.08% and 4.02% for the comparable 2017 periods.

[3] Beginning balance reflects the transition to Bank Holding Company Accounting by netting previously established unrealized depreciation against the gross loan balances resulting in a starting point of zero for this table.

[4] See Note 11 for the components of other operating expenses.

[5] (4) Includes $256 of net revenues received from Medallion Bank for the three months ended March 31, 2018 and $230 and $457 for the three and six months ended June 30, 2017, primarily for expense reimbursements. See Notes 6 and 13 for additional information.

[6] (5) There were no net losses on investment securities of affiliated issuers for the three months ended March 31, 2018 and June 30, 2017 and for the six months ended June 30, 2017.