Debt - Narrative (Details)			1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 27, 2020 USD ($)	Jul. 31, 2015 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jul. 31, 2020 EUR (€)	May 31, 2020 EUR (€)	Mar. 23, 2020 EUR (€)
Line of Credit Facility [Line Items]
Interest rate				7.25%	7.25%
Amortization of deferred financing cost					$ 2,875,000	$ 2,600,000	$ 2,476,000
Long-term debt gross				$ 276,457,000	$ 276,457,000
Payment Protection Program, CARES Act
Line of Credit Facility [Line Items]
Forgiveness ineligibility, interest rate				1.00%	1.00%
Forgiveness ineligibility, payment deferral period					6 months
Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.50%
Maximum | Payment Protection Program, CARES Act
Line of Credit Facility [Line Items]
Debt instrument, term					5 years
Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.375%
Minimum | Payment Protection Program, CARES Act
Line of Credit Facility [Line Items]
Debt instrument, term					2 years
Eurodollar
Line of Credit Facility [Line Items]
Margin of interest	6.25%
Eurodollar | Maximum
Line of Credit Facility [Line Items]
Margin of interest	6.25%
Eurodollar | Minimum
Line of Credit Facility [Line Items]
Margin of interest	6.00%
Base Rate
Line of Credit Facility [Line Items]
Margin of interest	5.25%
Revolving loan
Line of Credit Facility [Line Items]
Maximum borrowing available	$ 25,000,000.0
Debt issuance costs incurred	500,000	$ 1,300,000
Long-term debt gross				$ 0	$ 0
Term Loan
Line of Credit Facility [Line Items]
Face amount	275,000,000.0	425,000,000.0						€ 600,000	€ 300,000	€ 1,000,000.0
Interest rate								2.50%	2.20%	1.50%
Extinguishment of debt	107,100,000
Loan balance	403,800,000			274,313,000	274,313,000	405,875,000
Modification of debt	296,700,000
Write off of deferred debt issuance cost	700,000
Unamortized issuance costs	1,900,000
Debt issuance costs incurred	7,500,000	$ 12,900,000
Debt issuance costs, net				8,588,000	8,588,000	3,886,000
Long-term debt gross				0	0
Fair value of debt				271,600,000	271,600,000
Amortization per year		1.00%
Term Loan | Restated Credit Facility
Line of Credit Facility [Line Items]
Debt issuance costs incurred	6,400,000
Amortization of deferred financing cost				$ 800,000
Term Loan | Existing Lenders
Line of Credit Facility [Line Items]
Write off of deferred debt issuance cost	4,400,000
Term Loan | New Lenders
Line of Credit Facility [Line Items]
Debt issuance costs incurred	1,100,000
Bridge Loan
Line of Credit Facility [Line Items]
Maximum borrowing available	5,000,000.0
Letter-Of-Credit Sub-Facility
Line of Credit Facility [Line Items]
Maximum borrowing available	$ 10,000,000.0	$ 10,000,000.0
Credit Facility | Alternate Base Rate
Line of Credit Facility [Line Items]
Margin of interest		3.75%
Credit Facility | LIBOR
Line of Credit Facility [Line Items]
Margin of interest		4.75%
Variable rate base minimum		1.00%
Interest rate swap
Line of Credit Facility [Line Items]
Cash flow hedge, gain (loss)			$ 4,000,000.0
Interest rate swap | Derivative Financial Instruments, Liabilities
Line of Credit Facility [Line Items]
Mark-to-market adjustment					$ 100,000	$ (100,000)