Schedule II - Condensed Financial Information of Registrant - Condensed Balance Shsets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets [Abstract]
Debt securities, at fair value	$ 526,265	$ 428,641
Equity securities, at fair value	20,039	17,758
Total assets acquired	133,361	64,423
Deferred income taxes, net		3,199
Income taxes, net	2,552	5,220
Right-of-use assets	8,096
Reinsurance payable	28,633	14,975
Total assets	1,179,016	925,371
LIABILITIES AND SHAREHOLDERS’ EQUITY
Long-term debt	98,522	44,404
Lease liabilities	8,096
Other liabilities	37,246	19,302
Total liabilities	930,323	710,112
Preferred stock	0	0
Common stock	144	128
Additional paid-in capital	167,677	141,128
Accumulated other comprehensive income (loss)	10,281	(3,750)
Retained earnings	70,591	77,753
Total shareholders’ equity	248,693	215,259	$ 227,459	$ 234,465
Total liabilities and shareholders' equity	1,179,016	925,371
Parent Company [Member]
Assets [Abstract]
Investments in subsidiaries	268,767	224,951
Debt securities, at fair value	24,951	19,431
Equity securities, at fair value	1,751	1,490
Total assets acquired	21,031	4,109
Deferred income taxes, net	1,940	786
Income taxes, net	13,850	9,885
Note receivable and accrued interest to subsidiary	18,107	0
Right-of-use assets	7,716
Reinsurance payable	2,878	2,436
Total assets	360,991	263,088
LIABILITIES AND SHAREHOLDERS’ EQUITY
Due to subsidiaries, net	1,779	987
Long-term debt	98,522	44,404
Lease liabilities	7,716
Other liabilities	4,281	2,438
Total liabilities	112,298	47,829
Preferred stock	0	0
Common stock	144	128
Additional paid-in capital	167,677	141,128
Accumulated other comprehensive income (loss)	10,281	(3,750)
Retained earnings	70,591	77,753
Total shareholders’ equity	248,693	215,259
Total liabilities and shareholders' equity	$ 360,991	$ 263,088