Significant Accounting Policies (Details) - USD ($) $ / shares in Units, shares in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2021	Mar. 11, 2020	Nov. 06, 2017
Disaggregation of Revenue
Shares authorized for repurchase														$ 75,000,000
Shares repurchased during the period (shares)									760
Weighted average share price of shares repurchased (per share)									$ 25.40
Common stock repurchases	[1]										$ 19,300,000
Sales		$ 378,900,000	$ 328,300,000	$ 322,000,000.0	$ 288,500,000	$ 312,400,000	$ 273,200,000	$ 289,600,000	$ 301,900,000	$ 1,317,700,000	1,177,100,000	$ 1,215,500,000
Cost of sales										993,500,000	845,000,000.0	918,000,000.0
Advertising costs										3,900,000	2,700,000	4,000,000.0
Research and development expense										12,700,000	9,100,000	9,200,000
(Loss) income from continuing operations		$ 12,100,000	$ 14,900,000	$ 6,500,000	$ 25,600,000	$ 37,500,000	$ 15,600,000	$ 13,800,000	$ 2,000,000.0	$ 59,100,000	$ 68,900,000	$ 31,400,000
Income (loss) from continuing operations, basic (usd per share)		$ 0.34	$ 0.42	$ 0.18	$ 0.72	$ 1.06	$ 0.44	$ 0.39	$ 0.06	$ 1.66	$ 1.95	$ 0.93
Income (loss) from continuing operations, diluted (usd per share)		$ 0.29	$ 0.36	$ 0.16	$ 0.63	$ 0.97	$ 0.43	$ 0.39	$ 0.06	$ 1.44	$ 1.89	$ 0.89
Scenario, Plan
Disaggregation of Revenue
Interest expense excluding amortization										$ 8,400,000
(Loss) income from continuing operations										$ 52,600,000
Income (loss) from continuing operations, basic (usd per share)										$ 0.18
Income (loss) from continuing operations, diluted (usd per share)										$ 0.16
Convertible Notes, due 2024 | Convertible Debt
Disaggregation of Revenue
Principal amount		$ 258,800,000				$ 258,800,000				$ 258,800,000	$ 258,800,000				$ 258,800,000
Interest expense excluding amortization										2,600,000	2,600,000	$ 2,600,000
Unamortized discount		0				(34,800,000)				0	(34,800,000)		$ (3,900,000)
Unamortized debt issuance costs		$ 2,900,000				$ 3,100,000				2,900,000	3,100,000
Shipping
Disaggregation of Revenue
Sales										11,800,000	10,600,000	11,300,000
Cost of sales										$ 17,600,000	$ 15,000,000.0	$ 15,800,000
Minimum
Disaggregation of Revenue
Finite lived intangible asset useful life										2 years
Maximum
Disaggregation of Revenue
Finite lived intangible asset useful life										15 years

[1] Includes $19.3 in shares repurchased through our share repurchase program. Refer to Note 2, “Significant Accounting Policies,” for further information.