Investments in debt and equity securities (Tables)

3 Months Ended

Mar. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Investments in debt securities

The total fair values of the Company's investments in debt and equity securities are as follows:

	March 31, 2020	December 31, 2019
	($000 omitted)
Investments in:
Debt securities	584,153	605,721
Equity securities	28,250	39,318
	612,403	645,039

The amortized costs and fair values of investments in debt securities are as follows:

	March 31, 2020		December 31, 2019
	Amortized costs	Fair values	Amortized costs	Fair values
	($000 omitted)
Municipal	48,780	50,348	52,176	53,823
Corporate	300,203	302,527	299,074	309,142
Foreign	218,918	224,681	234,734	236,073
U.S. Treasury Bonds	6,547	6,597	6,664	6,683
	574,448	584,153	592,648	605,721

Proceeds from sales of investments in securities are as follows: 

		Three Months Ended   March 31,
		2020	2019
	($000 omitted)
Proceeds from sales of debt securities		11,503	6,318
Proceeds from sales of equity securities		293	640
Total proceeds from sales of investments in securities		11,796	6,958

Investments in equity securities

The total fair values of the Company's investments in debt and equity securities are as follows:

	March 31, 2020	December 31, 2019
	($000 omitted)
Investments in:
Debt securities	584,153	605,721
Equity securities	28,250	39,318
	612,403	645,039

Investment gains and losses recognized during the periods ended March 31, 2020 and 2019 related to investments in equity securities are as follows:

		Three Months Ended   March 31,
		2020		2019
	($000 omitted)
Net investment (losses) gains recognized on equity securities during the period		(11,061	)	3,657
Less: Net realized (losses) gains on equity securities sold during the period		(507	)	111
Net unrealized investment (losses) gains recognized on equity securities still held at March 31		(10,554	)	3,546

Gross unrealized gains and losses

Gross unrealized gains and losses on investments in debt securities are as follows:

	March 31, 2020		December 31, 2019
	Gains	Losses	Gains	Losses
	($000 omitted)
Municipal	1,570	2	1,649	2
Corporate	6,203	3,879	10,091	23
Foreign	6,407	644	2,362	1,023
U.S. Treasury Bonds	91	41	60	41
	14,271	4,566	14,162	1,089

Debt securities according to contractual terms

Debt securities as of March 31, 2020 mature, according to their contractual terms, as follows (actual maturities may differ due to call or prepayment rights):

	Amortized costs	Fair values
	($000 omitted)
In one year or less	77,995	78,047
After one year through five years	303,007	307,426
After five years through ten years	160,301	166,107
After ten years	33,145	32,573
	574,448	584,153

Gross unrealized losses on investments and fair values of related securities

Gross unrealized losses on investments in debt securities and the fair values of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2020, were:

	Less than 12 months		More than 12 months		Total
	Losses	Fair values	Losses	Fair values	Losses	Fair values
	($000 omitted)
Municipal	2	52	—	—	2	52
Corporate	3,879	103,187	—	—	3,879	103,187
Foreign	584	31,671	60	4,224	644	35,895
U.S. Treasury Bonds	—	—	41	2,105	41	2,105
	4,465	134,910	101	6,329	4,566	141,239

Gross unrealized losses on investments in debt securities and the fair values of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2019, were:

	Less than 12 months		More than 12 months		Total
	Losses	Fair values	Losses	Fair values	Losses	Fair values
	($000 omitted)
Municipal	2	53	—	—	2	53
Corporate	23	7,420	—	—	23	7,420
Foreign	318	92,108	705	55,875	1,023	147,983
U.S. Treasury Bonds	—	—	41	2,215	41	2,215
	343	99,581	746	58,090	1,089	157,671