Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Measurement

Schedule of fair value of financial instruments

	Carrying		Fair		Fair Value Measurements
As of December 31, 2019	Amount		Value		Level 1		Level 2		Level 3
Recurring assets and liabilities:
Long-term debt	$	1,398,385	$	632,796	$	—	$	632,796	$	—
Interest rate swap liability		501		501		—		501		—
Acquisition contingent liability	$	721	$	721	$	—	$	—	$	721
Nonrecurring assets and liabilities:
Goodwill		359,771		359,771		—		—		359,771

	Carrying		Fair		Fair Value Measurements
As of December 31, 2018 (As Restated)	Amount		Value		Level 1		Level 2		Level 3
Recurring assets and liabilities:
Long-term debt	$	1,306,423	$	1,316,306	$	—	$	1,316,306	$	—
Interest rate swap asset (1)		3,836		3,836		—		3,836		—
Acquisition contingent liability	$	721	$	721	$	—	$	—	$	721
Nonrecurring assets and liabilities:
Goodwill		708,258		708,258		—		—		708,258

(1) Due to an error in presentation of this table in the financial statement for the year ended December 31, 2018, the carrying amount and fair value of the interest rate swap was disclosed as zero. The table has been restated to include the carrying amount and fair value of the interest rate swap asset as at December 31, 2018.

Schedule of net assets and liabilities classified as Level 3 for reconciliation

	December 31,		December 31,
	2019		2018
Balance as of January 1,	$	721	$	721
Payments/Reductions		—		—
Balance as of December 31,	$	721	$	721