CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net Income	$ 29,687	$ 105,638	$ 58,136
Adjustments to reconcile net income to net cash used for operating activities:
Depreciation and amortization	80,622	54,095	44,908
Amortization of debt premium	(2,369)	0	0
Deferred income tax provision	(4,004)	17,170	(449)
Realized gain on investments	0	0	(1,588)
Convertible debt conversion charge	7,273	0	16,135
Loss on senior note repurchase	22,734	0	0
Gain on earthquake insurance recovery	(22,451)	0	0
Noncash Titan Europe gain	0	(26,700)	0
Supply agreement termination income	0	(26,134)	0
Stock-based compensation	4,815	4,087	2,392
Excess tax benefit from stock options exercised	68	(184)	(706)
Proceeds from Insurance Settlement, Operating Activities	35,808	0	0
Issuance of treasury stock under 401(k) plan	646	588	536
Gain on acquisition	0	(11,678)	(285)
(Increase) decrease in assets:
Accounts receivable	26,417	35,839	(105,619)
Inventories	(30,280)	23,917	(55,607)
Prepaid and other current assets	(39,825)	(25,229)	(2,214)
Other assets	1,960	6,987	1,134
Increase (decrease) in liabilities:
Accounts payable	9,479	(44,542)	44,991
Other current liabilities	(556)	7,839	9,192
Other liabilities	(3,375)	8,475	(6,530)
Net cash provided by operating activities	116,649	130,168	4,426
Cash flows from investing activities:
Capital expenditures	(80,131)	(65,740)	(35,744)
Acquisitions, net of cash acquired	(95,681)	780	(99,118)
Additional equity investment in Wheels India	(8,017)	0	0
Purchases of marketable securities	0	0	(30,000)
Sales of marketable securities	0	0	31,586
Increase in restricted cash	14,473	0	0
Insurance proceeds	2,879	0	0
Other	2,344	1,066	2,473
Net cash used for investing activities	(193,079)	(63,894)	(130,803)
Cash flows from financing activities:
Proceeds from borrowings	745,313	8,838	0
Repurchase of senior unsecured notes	(558,360)	0	(1,064)
Payment on debt	(200,721)	(20,811)	(8,856)
Term loan borrowing	43,391	8,333	25,879
Convertible note conversion	(14,090)	0	0
Capital contribution from noncontrolling interest	79,592	0	0
Proceeds from exercise of stock options	1,001	934	524
Excess of tax benefit from stock options exercised	(68)	184	706
Payment of financing fees	(12,332)	(1,275)	0
Dividends paid	(1,046)	(845)	(809)
Net cash provided by (used for) financing activities	82,680	(4,642)	16,380
Effect of exchange rate changes on cash	(6,004)	(1,688)	(333)
Net increase (decrease) in cash and cash equivalents	246	59,944	(110,330)
Cash and cash equivalents at beginning of period	189,114	129,170	239,500
Cash and cash equivalents at end of period	189,360	189,114	129,170
Supplemental Cash Flow Information [Abstract]
Interest paid	41,875	27,192	24,818
Income taxes paid	59,360	86,587	30,807
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Issuance of common stock for Titan Europe Plc acquisition	14,710	148,154	4,491
Issuance of common stock for convertible debt payment	45,903	0	73,909
Titan Europe [Member]
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Issuance of common stock for Titan Europe Plc acquisition		$ 121,813	$ 0