Other Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Customer deposits and accrued rebates	$ 3,668	$ 2,907
Dividends payable	5,299	5,251
Accrued litigation, claims and professional fees	1,001	306
Current portion of environmental reserves	1,428	1,433
Other accrued expenses	6,475	8,039
Other current liabilities, Total	$ 17,871	$ 17,936