Restatement of Previously Issued Financial Statements Effects of the error corrections and immaterial adjustments on the Company’s consolidated balance sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Oct. 12, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	$ 11,361		$ 14,541
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	2,433		4,589
Limited liability investments	7,078		9,094
Alternative Investment	31,416		32,211
Investments in private companies, at adjusted cost	4,620		4,870
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	10,662	$ 10,662	10,662		$ 10,662	$ 10,662	$ 10,662
Other investments, at cost which approximates fair value	3,316		3,721
Short-term investments, at cost which approximates fair value	151		151
Investments	71,037		79,839
Cash and cash equivalents	10,618		5,377
Restricted cash	13,760		14,985
Investment in investee	4,947		5,230
Accrued investment income	301		507
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	5,218		4,431
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	8,864		7,247
Deferred acquisition costs, net	6,662	6,428	6,325		6,054	$ 5,867	$ 5,827
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	105,246		108,008
Goodwill	80,843		80,843	$ 9,051
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	78,935		79,446
Other assets	3,592		4,302	205
Assets held for sale	115,107		110,145
Total assets	505,130		506,685	13,037
Accrued expenses and other liabilities	11,254		10,359	2,368
Income taxes payable	2,801		2,644
Deferred service fees	44,368		41,113
Unpaid loss and loss adjustment expenses	2,594		1,329		$ 1,800
Bank loan	4,417		4,917
Notes payable	201,543		203,648
Subordinated debt, at fair value	52,822		52,105
Net deferred income tax liabilities	28,819		28,763
Liabilities held for sale	112,866		105,900
Total liabilities	461,484		450,778	$ 3,168
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	5,692		5,180
Additional paid-in capital	356,247		356,171
Accumulated deficit	(365,128)		(310,953)
Accumulated other comprehensive income (loss)	36,546		(3,852)
Stockholders' Equity Attributable to Parent	27,665		41,366
Noncontrolling interests in consolidated subsidiaries	10,289		9,361
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	37,954		50,727
Liabilities and Equity	505,130		506,685
Immaterial Accounting Adjustments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	0		0
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	0		0
Limited liability investments	(764)		(850)
Alternative Investment	0		0
Investments in private companies, at adjusted cost	755		850
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	0		0
Other investments, at cost which approximates fair value	0		0
Short-term investments, at cost which approximates fair value	0		0
Investments	(9)		0
Cash and cash equivalents	(947)		(722)
Restricted cash	0		0
Investment in investee	0		0
Accrued investment income	0		0
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	45		145
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	1,010		759
Deferred acquisition costs, net	0		0
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	0		0
Goodwill	731		731
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	(584)		(616)
Other assets	0		0
Assets held for sale	0		0
Total assets		246	297
Accrued expenses and other liabilities	(129)		(997)
Income taxes payable	0		0
Deferred service fees	3,147		(1,144)
Unpaid loss and loss adjustment expenses	(2,615)		0
Bank loan	0		0
Notes payable	0		0
Subordinated debt, at fair value	0		0
Net deferred income tax liabilities	23		18
Liabilities held for sale	0		0
Total liabilities	426		(2,123)
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	215		(281)
Additional paid-in capital	(362)		150
Accumulated deficit	10		2,585
Accumulated other comprehensive income (loss)	0		0
Stockholders' Equity Attributable to Parent	(352)		2,735
Noncontrolling interests in consolidated subsidiaries	(43)		(34)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(395)		2,701
Liabilities and Equity	246		297
Adjustments for Error Correction 1 [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	0		0
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	244		113
Limited liability investments	3,515		6,113
Alternative Investment	3,629		4,545
Investments in private companies, at adjusted cost	0		0
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	0		0
Other investments, at cost which approximates fair value	1,400		1,400
Short-term investments, at cost which approximates fair value	0		0
Investments	8,788		12,171
Cash and cash equivalents	0		0
Restricted cash	0		0
Investment in investee	0		0
Accrued investment income	0		0
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	0		0
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	0		0
Deferred acquisition costs, net	0		0
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	0		0
Goodwill	0		0
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	0		0
Other assets	0		0
Assets held for sale	(8,788)		(12,171)
Total assets		0	0
Accrued expenses and other liabilities	0		0
Income taxes payable	0		0
Deferred service fees	0		0
Unpaid loss and loss adjustment expenses	0		0
Bank loan	0		0
Notes payable	0		0
Subordinated debt, at fair value	0		0
Net deferred income tax liabilities	0		0
Liabilities held for sale	0		0
Total liabilities	0		0
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	0		0
Additional paid-in capital	0		0
Accumulated deficit	0		0
Accumulated other comprehensive income (loss)	0		0
Stockholders' Equity Attributable to Parent	0		0
Noncontrolling interests in consolidated subsidiaries	0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	0		0
Liabilities and Equity	0		0
Adjustments for Error Correction 2 [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	0		0
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	0		0
Limited liability investments	(890)		(1,091)
Alternative Investment	22,918		21,895
Investments in private companies, at adjusted cost	3,865		4,020
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	10,662		10,662
Other investments, at cost which approximates fair value	0		0
Short-term investments, at cost which approximates fair value	0		0
Investments	36,555		35,486
Cash and cash equivalents	612		310
Restricted cash	0		0
Investment in investee	0		0
Accrued investment income	140		176
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	0		0
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	(53)		(48)
Deferred acquisition costs, net	0		0
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	0		0
Goodwill	0		0
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	0		0
Other assets	0		0
Assets held for sale	(14,909)		(14,136)
Total assets		22,345	21,788
Accrued expenses and other liabilities	437		432
Income taxes payable	0		0
Deferred service fees	0		0
Unpaid loss and loss adjustment expenses	0		0
Bank loan	0		0
Notes payable	16,976		17,179
Subordinated debt, at fair value	0		0
Net deferred income tax liabilities	0		0
Liabilities held for sale	0		0
Total liabilities	17,413		17,611
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	0		0
Additional paid-in capital	0		0
Accumulated deficit	(221)		(51)
Accumulated other comprehensive income (loss)	224		0
Stockholders' Equity Attributable to Parent	3		(51)
Noncontrolling interests in consolidated subsidiaries	4,929		4,228
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,932		4,177
Liabilities and Equity	22,345		21,788
Adjustments for Error Correction 3 [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	0		0
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	0		0
Limited liability investments	0		0
Alternative Investment	0		0
Investments in private companies, at adjusted cost	0		0
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	0		0
Other investments, at cost which approximates fair value	0		0
Short-term investments, at cost which approximates fair value	0		0
Investments	0		0
Cash and cash equivalents	(13,760)		(14,985)
Restricted cash	13,760		14,985
Investment in investee	0		0
Accrued investment income	0		0
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	0		0
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	0		0
Deferred acquisition costs, net	0		0
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	0		0
Goodwill	0		0
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	0		0
Other assets	0		0
Assets held for sale	0		0
Total assets		0	0
Accrued expenses and other liabilities	0		0
Income taxes payable	0		0
Deferred service fees	0		0
Unpaid loss and loss adjustment expenses	0		0
Bank loan	0		0
Notes payable	0		0
Subordinated debt, at fair value	0		0
Net deferred income tax liabilities	0		0
Liabilities held for sale	0		0
Total liabilities	0		0
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	0		0
Additional paid-in capital	0		0
Accumulated deficit	0		0
Accumulated other comprehensive income (loss)	0		0
Stockholders' Equity Attributable to Parent	0		0
Noncontrolling interests in consolidated subsidiaries	0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	0		0
Liabilities and Equity	0		0
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	11,361		14,541
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	2,433		4,589
Limited liability investments	7,078		9,094
Alternative Investment	31,416		32,211
Investments in private companies, at adjusted cost	4,620		4,870
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	10,662		10,662
Other investments, at cost which approximates fair value	3,316		3,721
Short-term investments, at cost which approximates fair value	151		151
Investments	71,037		79,839
Cash and cash equivalents	10,618		5,377
Restricted cash	13,760		14,985
Investment in investee	4,947		5,230
Accrued investment income	301		507
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	5,218		4,431
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	8,864		7,247
Deferred acquisition costs, net	6,662		6,325
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	105,246		108,008
Goodwill	80,843		80,843
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	78,935		79,446
Other assets	3,592		4,302
Assets held for sale	115,107		110,145
Total assets		505,130	506,685
Accrued expenses and other liabilities	11,254		10,359
Income taxes payable	2,801		2,644
Deferred service fees	44,368		41,113
Unpaid loss and loss adjustment expenses	2,594		1,329
Bank loan	4,417		4,917
Notes payable	201,543		203,648
Subordinated debt, at fair value	52,822		52,105
Net deferred income tax liabilities	28,819		28,763
Liabilities held for sale	112,866		105,900
Total liabilities	461,484		450,778
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	5,692		5,180
Additional paid-in capital	356,247		356,171
Accumulated deficit	(365,128)		(310,953)
Accumulated other comprehensive income (loss)	36,546		(3,852)
Stockholders' Equity Attributable to Parent	27,665		41,366
Noncontrolling interests in consolidated subsidiaries	10,289		9,361
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	37,954		50,727
Liabilities and Equity	505,130		506,685
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Fixed maturities, at fair value (amortized cost of $11,605 and $14,707, respectively)	11,361		14,541
Equity investments, at fair value (cost of $2,340 and $4,868, respectively)	2,189		4,476
Limited liability investments	5,217		4,922
Alternative Investment	4,869		5,771
Investments in private companies, at adjusted cost	0		0
Real estate investments, at fair value (cost $10,225 and $10,225, respectively)	0		0
Other investments, at cost which approximates fair value	1,916		2,321
Short-term investments, at cost which approximates fair value	151		151
Investments	25,703		32,182
Cash and cash equivalents	24,713		20,774
Restricted cash	0		0
Investment in investee	4,947		5,230
Accrued investment income	161		331
Service fee receivable, net of allowance for doubtful accounts of $315 and $318, respectively	5,173		4,286
Other receivables, net of allowance for doubtful accounts of zero and zero, respectively	7,907		6,536
Deferred acquisition costs, net	6,662		6,325
Property and equipment, net of accumulated depreciation of $13,794 and $11,683, respectively	105,246		108,008
Goodwill	80,112		80,112
Intangible assets, net of accumulated amortization of $8,729 and $8,218, respectively	79,519		80,062
Other assets	3,592		4,302
Assets held for sale	138,804		136,452
Total assets		$ 482,539	484,600
Accrued expenses and other liabilities	10,946		10,924
Income taxes payable	2,801		2,644
Deferred service fees	41,221		42,257
Unpaid loss and loss adjustment expenses	5,209		1,329
Bank loan	4,417		4,917
Notes payable	184,567		186,469
Subordinated debt, at fair value	52,822		52,105
Net deferred income tax liabilities	28,796		28,745
Liabilities held for sale	112,866		105,900
Total liabilities	443,645		435,290
Redeemable Class A preferred stock, no par value; unlimited number authorized; 222,876 and 222,876 issued and outstanding at June 30, 2018 and December 31, 2017, respectively; redemption amount of $7,441 and $7,182 at June 30, 2018 and December 31, 2017, respectively	5,477		5,461
Additional paid-in capital	356,609		356,021
Accumulated deficit	(364,917)		(313,487)
Accumulated other comprehensive income (loss)	36,322		(3,852)
Stockholders' Equity Attributable to Parent	28,014		38,682
Noncontrolling interests in consolidated subsidiaries	5,403		5,167
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	33,417		43,849
Liabilities and Equity	$ 482,539		$ 484,600