Financing Arrangements - Narrative (Details)	1 Months Ended				12 Months Ended
	May 31, 2022 USD ($)	Apr. 30, 2022 GBP (£)	Aug. 31, 2021 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Feb. 28, 2021 GBP (£)
Debt Instrument [Line Items]
Borrowings on lines of credit					$ 287,276,000	$ 286,154,000	$ 173,794,000
Payments of convertible debt					0	38,567,000	0
Gain (loss) on extinguishment of debt					0	(1,000,000)	419,000
Long-term debt					114,115,000	114,803,000
Proceeds from financing obligation			$ 7,900,000		0	8,004,000	0
Long-term debt, gross					114,249,000	114,991,000
Current debt					22,438,000	19,210,000
Interest expense					7,000,000	8,800,000	11,000,000
Interest costs capitalized					0	0	0
2023					23,000,000
2024					4,000,000
2025					7,000,000
2027					80,000,000
Foreign Line of Credit
Debt Instrument [Line Items]
Current debt					$ 14,300,000	11,800,000
Revolving credit facility | U.K. Subsidiary
Debt Instrument [Line Items]
Maximum borrowing capacity | £		£ 2,000,000						£ 6,000,000
Interest rate, stated percentage					6.70%
Quarterly principal payment | £		350,000
Balloon payment | £		£ 2,800,000
Long-term debt					$ 8,500,000
Revolving credit facility | SONIA | U.K. Subsidiary
Debt Instrument [Line Items]
Basis spread on variable rate		3.25%
Convertible Notes due 2021
Debt Instrument [Line Items]
Payments of convertible debt				$ 38,600,000
Face amount repurchased						28,300,000	33,100,000
Cost of repurchase						28,100,000	29,100,000
Gain (loss) on extinguishment of debt						(1,000,000)	$ 400,000
Convertible Notes due 2021 | Senior notes
Debt Instrument [Line Items]
Debt instrument, face amount				$ 100,000,000
Interest rate, stated percentage				4.00%
Amended ABL Facility | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 175,000,000				167,600,000
Maximum borrowing capacity, option to increase	$ 250,000,000
Debt instrument, term	5 years
Borrowings on lines of credit					80,300,000
Letters of credit outstanding, amount					3,300,000
Remaining borrowing capacity					$ 84,000,000
Unused capacity, commitment fee percentage	0.375%				0.375%
Threshold for commitment fee	50.00%
Average daily unused portion, commitment fee	0.25%
Weighted average interest rate					5.90%
Fixed charge coverage ratio	1.00
Line of credit facility, covenant, minimum, fixed charge leverage ratio	4.00
Long-term debt					$ 80,300,000	86,500,000
Long-term debt, gross					$ 80,300,000	86,500,000
Amended ABL Facility | Revolving credit facility | Fed Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Amended ABL Facility | Revolving credit facility | B S B Y
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%				1.75%
Amended ABL Facility | Revolving credit facility | B S B Y | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Amended ABL Facility | Revolving credit facility | B S B Y | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Amended ABL Facility | Revolving credit facility | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate					0.75%
Amended ABL Facility | Revolving credit facility | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Amended ABL Facility | Revolving credit facility | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Financing obligation
Debt Instrument [Line Items]
Weighted average interest rate			5.40%
Long-term debt					$ 3,402,000	6,610,000
Long-term debt, gross					3,437,000	6,688,000
U.K. term loan | Secured Debt | U.K. Subsidiary
Debt Instrument [Line Items]
Debt instrument, face amount | £		£ 7,000,000
U.K. term loan | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt					7,102,000	5,984,000
Long-term debt, gross					$ 7,201,000	$ 6,094,000