Consolidated Statement of Cash Flows - USD ($)	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Payments to Acquire Property, Plant, and Equipment							$ (439,000)
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (10,296,000)	$ (8,072,000)				$ (12,514,000)	(9,312,000)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
(Income) loss from discontinued operations, net of taxes	(594,000)	(358,000)		$ (358,000)		(980,000)	97,000
(Loss) gain on disposal of discontinued operations, net of taxes	(6,628,000)	1,017,000	$ 1,017,000			(6,628,000)	1,017,000
Equity in net loss (income) of investee	385,000	145,000				284,000	(2,240,000)
Equity in net income of limited liability investments	(189,000)	(365,000)				(181,000)	(600,000)
Loss on change in fair value of limited liability investment						1,461,000	1,659,000
Depreciation and amortization expense						2,678,000	3,153,000
Contingent consideration benefit	0	(212,000)				0	(212,000)
Stock-based compensation expense, net of forfeitures	300,000	300,000				588,000	588,000
Net realized (gains) losses	(132,000)	1,000				(397,000)	1,000
Gain on change in fair value of equity investments	421,000	0				(744,000)	0
Net change in unrealized loss on private company investments						(155,000.000)	(1,265,000.000)
Loss on change in fair value of debt						1,061,000	4,591,000
Deferred income taxes						56,000	1,098,000
Amortization of fixed maturities premiums and discounts						32,000	47,000
Amortization of note payable premium						(473,000)	(483,000)
Gain on disposal of subsidiary	17,000	0			$ 0	17,000	0	$ 0
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]
Service fee receivable, net						(787,000)	(88,000)
Other receivables, net						(1,617,000)	(1,733,000)
Deferred acquisition costs, net						(337,000)	(227,000)
Unpaid loss and loss adjustment expenses						1,265,000	(402,000)
Deferred service fees						3,255,000	2,100,000
Other, net						(3,566,000)	1,578,000
Cash (used in) provided by operating activities - continuing operations						(4,150,000)	(137,000)
Cash used in operating activities - discontinued operations						(1,909,000)	(6,966,000)
Net cash used in operating activities						(6,059,000)	(7,103,000)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from sales and maturities of fixed maturities						4,965,000	145,000
Proceeds from sales of equity investments						3,704,000	0
Purchases of fixed maturities						1,885,000	192,000
Purchases of equity investments						806,000	506,000
Proceeds from Sale of Equity Method Investments						2,199,000
Net proceeds from (acquisitions of) limited liability investments							2,408,000
Payments to Acquire Investments						(666,000)	(484,000)
Purchases of investments in private companies						(95,000)	171,000
Net proceeds from other investments						405,000	373,000
Net proceeds from short-term investments						0	(250,000)
Proceeds from disposal of subsidiary						565,000	0
Net proceeds from sale of discontinued operations						1,129,000	1,017,000
Net purchases of property and equipment						593,000
Cash provided by (used in) investing activities - continuing operations						10,298,000	(2,415,000)
Cash Provided by (Used in) Investing Activities, Discontinued Operations						(3,086,000)	8,612,000
Net Cash Provided by (Used in) Investing Activities						7,212,000	6,197,000
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Principal payments on bank loan						(500,000)	0
Principal payments on note payable						1,632,000	1,457,000
Cash used in financing activities - continuing operations						(2,132,000)	(1,457,000)
Cash used in financing activities - discontinued operations						0	0
Net cash used in financing activities						(2,132,000)	(1,457,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect						4,016,000	(4,009,000)
Cash and cash equivalents and restricted cash of continuing operations at end of period	10,618,000					10,618,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations									$ 43,874,000	$ 36,005,000
Less: cash and cash equivalents and restricted cash of discontinued operations at beginning of period									23,512,000	4,524,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 24,378,000	$ 27,472,000				$ 24,378,000	$ 27,472,000		$ 20,362,000	$ 31,481,000