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Debt and Credit Arrangements - Debt and Credit Arrangements (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Short-term debt
Current portion of long-term debt	$ 5,216	$ 3,354
Short-term debt	22,644	12,050
Long-term debt
Total long-term debt	38,549	57,076
Total long-term debt, less current portion	33,333	53,722
Total debt	55,977	65,772
Thailand Bhat Denominated Secured Notes Short-term Debt at 3.60% [Member]
Short-term debt
Short-term debt	5,291	3,670
Thailand Bhat Denominated Secured Notes Short-term Debt at 3.29% [Member]
Short-term debt
Short-term debt	2,384	1,882
Thailand Bhat Denominated Secured Notes Short-term Debt at 2.97% [Member]
Short-term debt
Short-term debt	957	0
France Euro Denominated Secured Notes Short-term Debt at 2.50% [Member]
Short-term debt
Short-term debt	6,142	0
Brazil Real Denominated Secured Notes Short-term Debt at 2.83% [Member]
Short-term debt
Short-term debt	0	1,152
Brazil Real Denominated Secured Notes Short-term Debt at 5.40% [Member]
Short-term debt
Short-term debt	1,854	752
Brazil Real Denominated Secured Notes Short-term Debt at 9.40% [Member]
Short-term debt
Short-term debt	0	1,240
Brazil Real Denominated Secured Notes Short-term Debt at 3.30% [Member]
Short-term debt
Short-term debt	800	0
U.S. Dollar Denominated Current Portion of Long Term Debt at 2.71% [Member]
Short-term debt
Current portion of long-term debt	0	1,448
Austria Euro Denominated Current Portion of Long Term Debt at 2.48% [Member]
Short-term debt
Current portion of long-term debt	25	30
Austria Euro Denominated Current Portion of Long Term Debt at 1.40% [Member]
Short-term debt
Current portion of long-term debt	0	560
Austria Euro Denominated Current Portion of Long Term Debt at 3.00% [Member]
Short-term debt
Current portion of long-term debt	22	22
Indonesia U.S. Dollar Denominated Current Portion of Long Term Debt at 3.50% [Member]
Short-term debt
Current portion of long-term debt	800	800
New Zealand U.S. Dollar Denominated Current Portion of Long Term Debt at 3.25% [Member]
Short-term debt
Current portion of long-term debt	4,369	494
Brazilian Real Denominated Long-term Debt at 4.60%, Due 2022 [Member]
Long-term debt
Total long-term debt	68	147
Australian Dollar Denominated Long Term Debt at 1.15% Due 2024 [Member]
Long-term debt
Total long-term debt	5,288	5,526
U.S. Dollar Denominated Long Term Debt at 1.27%, Due 2024 [Member]
Long-term debt
Total long-term debt	12,706	21,552
U.S. Dollar Denominated Long Term Debt at 2.71%, Due 2026 [Member]
Long-term debt
Total long-term debt	0	9,535
Brazilian Real Denominated Long-term Debt at 8.30%, Due 2025 [Member]
Long-term debt
Total long-term debt	1,800	0
Poland Zloty Denominated Long Term Debt at 1.33% Due 2024 [Member]
Long-term debt
Total long-term debt	6,696	6,524
Austria Euro Denominated Long Term Debt at 2.48% Due 2022 [Member]
Long-term debt
Total long-term debt	25	0
Austria Euro Denominated Long Term Debt at 2.32% Due 2030 [Member]
Long-term debt
Total long-term debt	128	224
Austria Euro Denominated Long Term Debt at 2.76% Due 2022 [Member]
Long-term debt
Total long-term debt	67	0
Indonesia U.S Dollar Denominated Long Term Debt at 3.50% Due 2024 [Member]
Long-term debt
Total long-term debt	6,667	7,467
Austria Euro Denominated Long Term Debt at 1.27% Due 2024 [Member]
Long-term debt
Total long-term debt	614	560
Austria Euro Denominated Long Term Debt at 3.00% Due 2025 [Member]
Long-term debt
Total long-term debt	121	134
New Zealand Dollar Denominated Long Term Debt at 3.25% Due 2021 [Member]
Long-term debt
Total long-term debt	4,369	0
New Zealand Dollar Denominated Long Term Debt at 3.90% Due 2021 [Member]
Long-term debt
Total long-term debt	$ 0	$ 5,407

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