CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net Income (loss)	$ (90,287)	$ (130,425)	$ 29,687
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	69,618	88,704	80,622
Amortization of debt premium	0	0	(2,369)
Mining asset impairment	0	23,242	0
Mining inventory writedown	0	16,690	0
Deferred income tax provision	27,969	(24,800)	(4,004)
Convertible debt conversion charge	0	0	7,273
Loss on note repurchase	0	0	22,734
Gain on earthquake insurance recovery	0	0	(22,451)
Noncash goodwill impairment charge	0	36,571	0
Stock-based compensation	2,335	5,360	4,815
Excess tax benefit from stock-based compensation	0	672	68
Insurance proceeds	0	0	35,808
Issuance of treasury stock under 401(k) plan	583	639	646
Non-cash foreign currency translation	12,058	8,829	198
(Increase) decrease in assets:
Accounts receivable	497	54,686	26,417
Inventories	31,333	20,933	(30,280)
Prepaid and other current assets	9,946	30,324	(39,825)
Other assets	(4,780)	(1,145)	1,960
Increase (decrease) in liabilities:
Accounts payable	1,402	(26,135)	9,479
Other current liabilities	(172)	(2,089)	(556)
Other liabilities	3,428	15,764	(3,348)
Net cash provided by operating activities	63,930	117,820	116,874
Cash flows from investing activities:
Capital expenditures	(48,429)	(58,439)	(80,131)
Acquisitions, net of cash acquired	0	(13,395)	(95,681)
Additional equity investment in Wheels India	0	0	(8,017)
Insurance proceeds	0	0	2,879
Increase (Decrease) in Restricted Cash	0	14,268	(14,473)
Other	(1,508)	1,296	2,119
Net cash used for investing activities	(49,937)	(56,270)	(193,304)
Cash flows from financing activities:
Proceeds from borrowings	5,727	15,708	788,704
Repurchase of senior notes	0	0	(558,360)
Payment on debt	(5,521)	(60,345)	(200,721)
Convertible note conversion	0	0	(14,090)
Capital contribution from noncontrolling interest	0	0	79,592
Proceeds from exercise of stock options	145	141	1,001
Adjustments to Additional Paid in Capital, Income Tax Deficiency from Share-based Compensation	0	(672)	(68)
Payment of financing fees	0	(33)	(12,332)
Dividends paid	(1,077)	(1,073)	(1,046)
Net cash provided by (used for) financing activities	(726)	(46,274)	82,680
Effect of exchange rate changes on cash	(14,530)	(3,185)	(6,004)
Net increase (decrease) in cash and cash equivalents	(1,263)	12,091	246
Cash and cash equivalents at beginning of period	201,451	189,360	189,114
Cash and cash equivalents at end of period	200,188	201,451	189,360
Supplemental Cash Flow Information [Abstract]
Interest paid	34,072	34,014	41,875
Income Taxes Paid, Net	(195)	(25,588)	59,360
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Issuance of common stock for Titan Europe acquisition	(42)	(1,202)	168
Issuance of common stock for convertible debt payment	$ 0	$ 0	$ 45,903