Fair value measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on a Recurring Basis

The following tables present the balances of assets measured at fair value on a recurring basis as of December 31, 2019 and 2018, by level within the fair value hierarchy.

	December 31, 2019
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Fixed maturities:
U.S. Treasury securities and obligations of U.S. government agencies	$	112	$	—	$	—	$	112
Obligations of states, municipalities and political subdivisions	—		172,893		—		172,893
Corporate and other securities	—		184,768		—		184,768
Commercial mortgage and asset-backed securities	—		197,970		—		197,970
Residential mortgage-backed securities	—		173,789		—		173,789
Total fixed maturities	112		729,420		—		729,532
Equity securities:
Exchange traded funds	54,463		—		—		54,463
Nonredeemable preferred stock	—		23,831		—		23,831
Total equity securities	54,463		23,831		—		78,294
Total	$	54,575	$	753,251	$	—	$	807,826

	December 31, 2018
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Fixed maturities:
U.S. Treasury securities and obligations of U.S. government agencies	$	611	$	—	$	—	$	611
Obligations of states, municipalities and political subdivisions	—		154,600		—		154,600
Corporate and other securities	—		96,752		—		96,752
Commercial mortgage and asset-backed securities	—		149,867		—		149,867
Residential mortgage-backed securities	—		108,421		—		108,421
Total fixed maturities	611		509,640		—		510,251
Equity securities:
Exchange traded funds	38,987		—		—		38,987
Nonredeemable preferred stock	—		18,724		—		18,724
Total equity securities	38,987		18,724		—		57,711
Total	$	39,598	$	528,364	$	—	$	567,962