Investments Fixed maturities by contractual periods (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Held-to-maturity Securities [Line Items]

Investments Classified by Contractual Maturity Date [Table Text Block]

(in thousands)	September 30, 2018
	Amortized Cost		Estimated Fair Value
Due in one year or less	$	5,138	$	5,117
Due after one year through five years	4,937		4,781
Due after five years through ten years	125		117
Due after ten years	1,116		1,061
Total	$	11,316	$	11,076

Schedule of Realized Gain (Loss) [Table Text Block]

(in thousands)	Three months ended September 30,					Nine months ended September 30,
	2018			2017		2018			2017
Gross realized gains	$	—		$	—	$	398		$	—
Gross realized losses	(414		)	—		(415		)	(1		)
Net realized losses	$	(414	)	$	—	$	(17	)	$	(1	)