Debt (Details) - USD ($)	11 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt		$ 162,734,000	$ 173,699,000
Less debt issuance costs		(2,135,000)	(1,125,000)
Total long-term debt		160,599,000	172,574,000
Less current portion		(9,466,000)	(6,960,000)
Long-term debt, less current portion		151,133,000	165,614,000
Long-term Debt, Fiscal Year Maturity [Abstract]
Total long-term debt		160,599,000	172,574,000
Amended and Restated
Debt Instrument [Line Items]
Revolving loans, potential increment in maximum borrowing capacity		$ 100,000,000
Duration of interest rate cash flow hedge		3 years
Derivative, notional amount		$ 50,000,000
Effective interest rate		4.17%
Interest expense, net	$ 7,800,000	$ 6,900,000	7,200,000
Amended and Restated | LIBOR
Debt Instrument [Line Items]
Base margin		1.75%
Amended and Restated | Base Rate
Debt Instrument [Line Items]
Base margin		0.50%
Term Loan
Debt Instrument [Line Items]
Long-term debt		$ 80,800,000	94,375,000
Total long-term debt		80,800,000
Long-term Debt, Fiscal Year Maturity [Abstract]
2019		10,000,000
2020		11,875,000
2021		14,375,000
2022		15,000,000
2023		29,550,000
Total long-term debt		80,800,000
Revolving Loans
Debt Instrument [Line Items]
Long-term debt		81,934,000	79,324,000
Revolving loans maximum borrowing capacity		300,000,000
Letters of credit outstanding		$ 57,000	$ 0
Minimum | Amended and Restated
Debt Instrument [Line Items]
Stated interest rate		3.00%
Maximum | Amended and Restated
Debt Instrument [Line Items]
Stated interest rate		6.00%