Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 01, 2019
Operating Loss Carryforwards [Line Items]
Income tax benefit from TCJA		$ 3,800,000
Deferred tax liability for purchase of Cloverleaf				$ 9,600,000
Income tax expense (benefit)	$ (5,157,000)	(3,619,000)	$ 9,393,000
Deferred tax liability from outside basis difference	400,000
Undistributed earnings of foreign subsidiaries		13,800,000
GILTI	200,000
Operating loss carryforwards	36,100,000
Operating loss carryforwards, subject to expiration	20,400,000
Operating loss carryforwards, not subject to expiration	21,400,000
Change in valuation allowance	(3,600,000)
Valuation allowance	16,043,000	19,627,000
Reasonably possible decrease in unrecognized tax benefits in the next twelve months	0
Decreases due to lapse in statute of limitations	431,000	353,000	73,000
U.S.
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	41,800,000
Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	900,000
Alternative Minimum Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	2,200,000
TSR
Operating Loss Carryforwards [Line Items]
Valuation allowance		$ 16,000,000.0	19,600,000
Tax Year Prior to 2017
Operating Loss Carryforwards [Line Items]
Payments of tax settlements			$ 4,300,000
Tax Year 2017
Operating Loss Carryforwards [Line Items]
Payments of tax settlements	600,000
Cloverleaf and Lanier Cold Storage
Operating Loss Carryforwards [Line Items]
Deferred tax liability for purchase of Cloverleaf	9,626,000
Income tax expense (benefit)	(9,600,000)
Change in valuation allowance	$ (6,000,000.0)