Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues
Revenue from Contract with Customer	$ 90,771	$ 127,965
Principal transactions	1,344	(2,287)
Loss on sale, payoff and mark-to-market of loans	(38)	(532)
Net dividend income	1,184	1,281
Other income	2,373	1,017
Non-interest revenues	95,634	127,444
Interest income	21,801	66,494
Interest expense	(16,458)	(49,552)
Net interest income	5,343	16,942
Loss on repurchase, reissuance or early retirement of debt	(458)	(2,838)
Provision for loan losses	(438)	(5,124)
Total net revenues after provision for loan losses	100,081	136,424
Non-interest expenses
Compensation and benefits	77,314	97,359
Administration	9,387	8,904
Brokerage, clearing and exchange fees	2,706	3,097
Travel and business development	5,240	4,830
Managed deal expenses	3,136	4,849
Communications and technology	4,390	4,107
Occupancy	5,229	4,770
Professional fees	4,359	5,446
Depreciation	1,203	1,124
Other	500	1,994
Total non-interest expenses	113,464	136,480
Net loss before income taxes	(13,383)	(56)
Income tax expense (benefit)	(6,827)	1,167
Net loss	(6,556)	(1,223)
Less: Net income (loss) attributable to nonredeemable non-controlling interest	(7)	964
Net loss attributable to JMP Group LLC	$ (6,549)	$ (2,187)
Net loss attributable to JMP Group LLC per common share:
Basic (in dollars per share)	$ (0.32)	$ (0.10)
Diluted (in dollars per share)	$ (0.32)	$ (0.10)
Weighted average common shares outstanding:
Basic (in shares)	20,189	21,490
Diluted (in shares)	20,189	21,490
Total Investment Banking Revenues [Member]
Revenues
Revenue from Contract with Customer	$ 65,716	$ 88,107
Total Brokerage Revenue [Member]
Revenues
Revenue from Contract with Customer	17,628	20,710
Total Asset Management Fees [Member]
Revenues
Revenue from Contract with Customer	$ 7,427	$ 19,148