Investments Amortized cost, gross unrealized gains and losses, and estimated fair value (Tables)

12 Months Ended

Dec. 31, 2018

Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value [Abstract]

Unrealized Gain (Loss) on Investments [Table Text Block]

The amortized cost, gross unrealized gains and losses, and estimated fair value of the Company's available-for-sale investments at December 31, 2018 and December 31, 2017 are summarized in the tables shown below:

(in thousands)	December 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated  Fair Value
Fixed maturities:
U.S. government, government agencies and authorities	$	5,594	$	1	$	48	$	5,547
States, municipalities and political subdivisions	621		—		14		607
Mortgage-backed	3,256		—		70		3,186
Corporate	2,961		—		41		2,920
Total fixed maturities	12,432		1		173		12,260

(in thousands)	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated  Fair Value
Fixed maturities:
U.S. government, government agencies and authorities	$	5,671	$	—	$	59	$	5,612
States, municipalities and political subdivisions	639		—		13		626
Mortgage-backed	2,933		—		57		2,876
Corporate	5,464		—		37		5,427
Total fixed maturities	14,707		—		166		14,541
Equity investments:
Common stock	3,883		—		313		3,570
Warrants - publicly traded	25		146		—		171
Warrants - not publicly traded	960		173		285		848
Total equity investments	4,868		319		598		4,589
Total fixed maturities and equity investments	$	19,575	$	319	$	764	$	19,130

Debt Securities, Available-for-sale [Line Items]

Schedule of Unrealized Loss on Investments [Table Text Block]

The following tables highlight the aggregate unrealized loss position, by security type, of available-for-sale investments in unrealized loss positions as of December 31, 2018 and December 31, 2017. The tables segregate the holdings based on the period of time the investments have been continuously held in unrealized loss positions.

(in thousands)									December 31, 2018
	Less than 12 Months				Greater than 12 Months				Total
	Estimated Fair Value		Unrealized Loss		Estimated Fair Value		Unrealized Loss		Estimated Fair Value		Unrealized Loss
Fixed maturities:
U.S. government, government agencies and authorities	$	1,497	$	1	$	2,609	$	47	$	4,106	$	48
States, municipalities and political subdivisions	—		—		606		14		606		14
Mortgage-backed	800		1		2,134		69		2,934		70
Corporate	595		1		2,151		40		2,746		41
Total fixed maturities	2,892		3		7,500		170		10,392		173

(in thousands)									December 31, 2017
	Less than 12 Months				Greater than 12 Months				Total
	Estimated Fair Value		Unrealized Loss		Estimated Fair Value		Unrealized Loss		Estimated Fair Value		Unrealized Loss
Fixed maturities:
U.S. government, government agencies and authorities	$	4,067	$	50	$	1,545	$	9	$	5,612	$	59
States, municipalities and political subdivisions	626		13		—		—		626		13
Mortgage-backed	2,876		57		—		—		2,876		57
Corporate	2,427		37		—		—		2,427		37
Total fixed maturities	9,996		157		1,545		9		11,541		166
Equity investments:
Common stock	3,570		313		—		—		3,570		313
Warrants	675		285		—		—		675		285
Total equity investments	4,245		598		—		—		4,245		598
Total	$	14,241	$	755	$	1,545	$	9	$	15,786	$	764