Tax Effects of Temporary Differences That Give Rise to Significant Portions of Net Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Discounted unpaid losses and loss adjustment expenses	$ 3,681	$ 3,482
Unearned premiums	10,234	9,206
Section 163(j) carryforward	9,023	11,075
Net operating loss carryforward	21,871	29,480
Partnership K1 basis differences	1,703	113
Loss on derivative instruments	2,158	853
Investment impairments	1	816
Stock options	1,352	1,375
Stat-to-GAAP reinsurance reserve	874	895
Unrealized loss on securities available-for-sale and investments in limited partnerships included in accumulated other comprehensive income (loss)	0	2,778
Unrealized loss on equity securities	0	1,409
Intercompany transfers	0	210
Other	1,840	1,860
Total deferred tax assets	52,737	63,552
Deferred tax liabilities:
Intangible assets	3,112	3,150
Unrealized gain on securities available-for-sale and investments in limited partnerships included in accumulated other comprehensive income (loss)	2,950	0
Unrealized gain on equity securities	3,438	0
Investment basis differences	0	212
Deferred acquisition costs	11,608	10,525
Depreciation and amortization	436	528
Other	116	548
Total deferred tax liabilities	21,660	14,963
Total net deferred tax assets	$ 31,077	$ 48,589