XML 41 R29.htm IDEA: XBRL DOCUMENT v3.25.3

INVESTMENTS (Tables)

9 Months Ended

Sep. 30, 2025

Investments, Debt and Equity Securities [Abstract]

Schedule of Carrying Amounts of Investment Securities and Fair Values

The amortized cost, gross unrealized gains and losses and estimated fair values of debt securities available-for-sale are as follows:

			As of September 30, 2025
			Amortized Cost												Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
			(In millions)
Short-term investments			$	0.9											$	—					$	—					$	0.9
U.S. Treasury			2.6												—						—						2.6
Municipal			4.9												0.2						—						5.0
Corporate			169.9												3.8						—						173.6
Mortgage and other asset-backed securities			228.8												3.0						(0.5)						231.3
Total investments			$	407.0											$	6.9					$	(0.5)					$	413.4

			As of December 31, 2024
			Amortized Cost												Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
			(In millions)
Short-term investments			$	14.4											$	—					$	—					$	14.4
U.S. Treasury			2.6												—						—						2.6
Municipal			10.6												0.1						(0.1)						10.6
Corporate			152.0												0.8						(0.9)						151.9
Mortgage and other asset-backed securities			170.1												0.6						(1.7)						169.1
Total investments			$	349.8											$	1.6					$	(2.7)					$	348.6

Schedule of Amortized Cost and Fair Value of TCA's Investment

A summary of amortized costs and fair value of investments by time to maturity, is as follows:

			As of September 30, 2025
			Amortized Cost						Fair Value
			(In millions)
Due in 1 year or less			$	0.9					$	0.9
Due in 1-5 years			122.0						124.3
Due in 6-10 years			53.3						54.8
Due after 10 years			2.1						2.1
Total by maturity			178.3						182.1
Mortgage and other asset-backed securities			228.8						231.3
Total investment securities			$	407.0					$	413.4

Schedule of Unrealized Loss on Investments

The following tables summarize the amount of unrealized losses, defined as the amount by which the amortized cost exceeds fair value, and the related fair value of investments with unrealized losses. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months. The reference point for determining how long an investment was in an unrealized loss position was September 30, 2025.

			As of September 30, 2025
			Less than 12 Months												Greater than 12 Months												Total
			Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
			(In millions)
Short-term investments			$	—					$	—					$	0.8					$	—					$	0.8					$	—
U.S. Treasury			0.8						—						0.8						—						1.7						—
Municipal			—						—						—						—						—						—
Corporate			4.9						—						—						—						4.9						—
Mortgage and other asset-backed securities			39.7						(0.3)						11.5						(0.2)						51.2						(0.5)
Total debt securities			$	45.4					$	(0.3)					$	13.1					$	(0.2)					$	58.6					$	(0.5)

			As of December 31, 2024
			Less than 12 Months												Greater than 12 Months												Total
			Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
			(In millions)
Short-term investments			$	0.3					$	—					$	3.9					$	—					$	4.1					$	—
U.S. Treasury			1.1						—						1.4						—						2.5						—
Municipal			3.4						(0.1)						1.6						—						4.9						(0.1)
Corporate			64.3						(0.5)						26.6						(0.4)						90.9						(0.9)
Mortgage and other asset-backed securities			78.5						(1.0)						26.4						(0.7)						104.9						(1.7)
Total debt securities			$	147.5					$	(1.6)					$	59.8					$	(1.2)					$	207.3					$	(2.7)

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-4

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration