Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities
Net income/(loss)	$ 34,938	$ 37,636	$ (33,458)
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation	57,502	54,447	60,254
Amortization	8,883	8,549	8,572
Noncash interest expense	753	753	2,281
Gain on early retirement of debt			(51,959)
Settlement of accreted debt discount			(11,955)
Provision for deferred income taxes, other credits and long-term liabilities	237	13,125	(20,727)
Provision for write-off of property, plant and equipment	2,345	4,630	15,541
Provision for impairment of investment			2,624
Increase in cash surrender value of life insurance			(2,445)
Loss/(gain) on disposition of discontinued operations			10,000
(Gain) on disposition of assets	(1,022)	(9,404)	(815)
Stock option expense			70
Excess tax benefit of options exercised	(93)	(450)
Compensation and benefits paid or payable in Class A Common Stock	2,812	4,896	5,406
Changes in operating assets and liabilities, net of business acquisitions and divestitures:
Accounts receivable	(12,082)	(9,509)	43,524
Inventories	7,105	16,639	42,069
Income taxes prepaid and receivable	(3,747)	997	(23,651)
Prepaid expenses and other current assets	314	(2,031)	2,137
Accounts payable	(1,677)	(7,700)	(23,476)
Accrued liabilities	6,124	(16,776)	(9,000)
Income taxes payable	2,422	1,009	(2,369)
Other, net	455	2,761	1,352
Net cash provided by operating activities	105,269	99,572	13,975
Investing Activities
Purchases of property, plant and equipment	(24,988)	(27,334)	(38,262)
Purchased software	(3,692)	(4,257)	(4,234)
Purchase price adjustment from sale of discontinued operations			(10,000)
Proceeds from sale of assets	2,860	12,256	7,534
Cash received from life insurance policy terminations		49,302	2,272
Acquisitions, net of cash acquired		(1,902)
Premiums paid for life insurance policies			(957)
Net cash provided by/(used in) investing activities	(25,820)	28,065	(43,647)
Financing Activities
Proceeds from borrowings	14,386	17,712	123,314
Principal payments on debt	(65,575)	(92,448)	(12,989)
Early retirement of debt			(73,664)
Proceeds from options exercised	789	125	24
Excess tax benefit of options exercised	93	450
Debt issuance costs		(4,471)
Dividends paid	(15,616)	(14,885)	(14,593)
Net cash (used in)/provided by financing activities	(65,923)	(93,517)	22,092
Effect of exchange rate changes on cash and cash equivalents	(3,373)	(9,285)	(1,525)
Increase/(decrease) in cash and cash equivalents	10,153	24,835	(9,105)
Change in cash balances of discontinued operations	(9,169)	(1,049)	(754)
Cash and cash equivalents at beginning of year	117,925	94,139	103,998
Cash and cash equivalents at end of year	$ 118,909	$ 117,925	$ 94,139