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Fair value measurements (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Available-for-sale securities

Details of available-for-sale securities were as follows:

June 30, 2021			Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
			(In thousands)
Mortgage-backed securities			$	8,278		$	127		$	9		$	8,396
U.S. Treasury securities			2,893			—			21			2,872
Total			$	11,171		$	127		$	30		$	11,268

June 30, 2020			Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
			(In thousands)
Mortgage-backed securities			$	9,812		$	239		$	6		$	10,045
U.S. Treasury securities			1,170			7			—			1,177
Total			$	10,982		$	246		$	6		$	11,222

December 31, 2020			Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
			(In thousands)
Mortgage-backed securities			$	9,799		$	156		$	9		$	9,946
U.S. Treasury securities			1,386			—			5			1,381
Total			$	11,185		$	156		$	14		$	11,327

Assets and liabilities measured at fair value on a recurring basis

The Company's assets measured at fair value on a recurring basis were as follows:

			Fair Value Measurements at June 30, 2021, Using
			Quoted Prices in Active Markets for Identical Assets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Balance at June 30, 2021
			(In thousands)
Assets:
Money market funds			$	—		$	12,234		$	—		$	12,234
Insurance contracts*			—			105,684						105,684
Available-for-sale securities:
Mortgage-backed securities			—			8,396			—			8,396
U.S. Treasury securities			—			2,872			—			2,872
Total assets measured at fair value			$	—		$	129,186		$	—		$	129,186

*    The insurance contracts invest approximately 53 percent in fixed-income investments, 20 percent in common stock of large-cap companies, 10 percent in common stock of mid-cap companies, 9 percent in common stock of small-cap companies, 6 percent in target date investments and 2 percent in cash equivalents.

			Fair Value Measurements at June 30, 2020, Using
			Quoted Prices in Active Markets for Identical Assets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Balance at June 30, 2020
			(In thousands)
Assets:
Money market funds			$	—		$	8,478		$	—		$	8,478
Insurance contract*			—			92,413			—			92,413
Available-for-sale securities:
Mortgage-backed securities			—			10,045			—			10,045
U.S. Treasury securities			—			1,177			—			1,177
Total assets measured at fair value			$	—		$	112,113		$	—		$	112,113

*    The insurance contract invests approximately 38 percent in fixed-income investments, 23 percent in common stock of large-cap companies, 9 percent in common stock of mid-cap companies, 9 percent in common stock of small-cap companies, 4 percent in target date investments and 17 percent in cash equivalents.

			Fair Value Measurements at December 31, 2020, Using
			Quoted Prices in Active Markets for Identical Assets  (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs  (Level 3)			Balance at December 31, 2020
			(In thousands)
Assets:
Money market funds			$	—		$	8,917		$	—		$	8,917
Insurance contract*			—			100,104			—			100,104
Available-for-sale securities:
Mortgage-backed securities			—			9,946			—			9,946
U.S. Treasury securities			—			1,381			—			1,381
Total assets measured at fair value			$	—		$	120,348		$	—		$	120,348

*    The insurance contract invests approximately 57 percent in fixed-income investments, 18 percent in common stock of large-cap companies, 9 percent in common stock of mid-cap companies, 9 percent in common stock of small-cap companies, 5 percent in target date investments and 2 percent in cash equivalents.

Fair value of long term debt outstanding

The estimated fair value of the Company's Level 2 long-term debt was as follows:

			June 30, 2021			June 30, 2020			December 31, 2020
			(In thousands)
Carrying amount			$	2,337,049		$	2,281,876		$	2,213,130
Fair value			$	2,616,232		$	2,563,734		$	2,537,289

X

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

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- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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