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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Cash flows from operating activities:      
Net (loss) income $ (65,077) $ (51,519) $ 13,045
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 54,655 54,376 57,618
Asset impairment 20,823 0 0
Deferred income tax provision (3,007) (2,300) (2,291)
Gain on building and investment sale 4,152 4,695 0
Loss on senior note repurchase (8,657) 0 0
Stock-based compensation 2,462 1,381 1,130
Issuance of treasury stock under 401(k) plan 1,245 1,076 561
Foreign currency translation loss (gain) 12,444 (4,657) 3,149
(Increase) decrease in assets:      
Accounts receivable (15,236) 56,832 (36,092)
Inventories 37,747 63,654 (77,919)
Prepaid and other current assets 2,312 1,912 (5,377)
Other long-term assets (1,071) (1,842) (13,054)
Increase (decrease) in liabilities:      
Accounts payable 11,942 (53,183) 29,364
Other current liabilities 24,025 (10,155) (2,866)
Other liabilities (13,226) (5,438) (3,444)
Net cash provided by (used for) operating activities 57,229 45,442 (36,176)
Cash flows from investing activities:      
Capital expenditures (21,680) (36,414) (39,000)
Proceeds from Sale of Equity Method Investments 32,852 19,021 0
Proceeds from Insurance Settlement, Investing Activities 8,657 0 0
Payment related to redeemable noncontrolling interest agreement 0 (71,722) 0
Other 13,392 (3,476) 2,069
Net cash provided by (used for) investing activities 33,221 (92,591) (36,931)
Cash flows from financing activities:      
Proceeds from borrowings 91,639 134,227 57,294
Payment on debt (126,393) (100,901) (38,557)
Dividends paid (603) (1,204) (1,201)
Proceeds from (Payments for) Other Financing Activities (3,208) 0 0
Net cash used for financing activities (38,565) 32,122 17,536
Effect of exchange rate changes on cash (1,253) 141 (6,314)
Net increase (decrease) in cash and cash equivalents 50,632 (14,886) (61,885)
Cash and cash equivalents, beginning of year 66,799 81,685 143,570
Cash and cash equivalents, end of year 117,431 66,799 81,685
Supplemental Cash Flow Information [Abstract]      
Interest Paid, Excluding Capitalized Interest, Operating Activities 29,233 32,498 30,800
Income taxes paid, net of refunds received 12,355 10,416 12,435
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]      
Transfer from Investments $ 0 $ 0 14,268
Stockholders' Equity, Other     $ (1,201)