Property and Equipment, Identifiable Intangible Assets and Goodwill - Identifiable Intangible Assets (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)
Identifiable intangible assets, net
Net balance, beginning of period	$ 304,411
Amortization expense	(7,344)
Net balance, end of period	297,067
Customer Relationships
Identifiable intangible assets, net
Net balance, beginning of period	276,848
Amortization expense	(6,526)
Net balance, end of period	270,322
Trade Names
Identifiable intangible assets, net
Net balance, beginning of period	27,563
Amortization expense	(818)
Net balance, end of period	$ 26,745

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration