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	$ 12,437	$ 8,355	$ 21,309
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation	11,342	10,661	10,153
Credit for asbestos litigation	(16,340)	(540)	0
Deferred income tax provision	111	2,545	5,975
Pension and other postretirement benefits - expense in excess of contributions	6,491	10,074	607
Stock-based compensation	1,196	1,258	1,954
Equity losses in Chinese joint venture (including an impairment charge of $6,407 in 2013)	8,930	1,594	502
Provisions for bad debts and inventories	155	346	(24)
Provision for warranties net of settlements	204	988	396
Excess tax benefits from the exercise of stock options	(5)	(16)	(47)
Provision for environmental liabilities	0	0	303
Other - net	108	(13)	438
Changes in assets/liabilities:
Receivables	4,196	5,188	(12,852)
Inventories	7,060	(1,101)	301
Other assets, including insurance receivable - asbestos	28,179	10,507	16,544
Accounts payable	(183)	(3,894)	(732)
Accrued payrolls and employee benefits	(2,045)	(1,209)	(582)
Other liabilities, including asbestos liability	(24,062)	(19,299)	(21,958)
Net cash flows provided by operating activities	37,774	25,444	22,287
Cash flows from investing activities:
Purchases of property, plant and equipment	(11,805)	(9,668)	(15,780)
Purchases of long-term marketable securities	(921)	(770)	(857)
Proceeds from the sale of long-term marketable securities	782	694	776
Proceeds from government grant	0	373	484
Other	18	2	5
Net cash flows used in investing activities	(11,926)	(9,369)	(15,372)
Cash flows from financing activities:
Dividends paid	(7,455)	(7,442)	(7,429)
Proceeds from the issuance of common stock	214	123	167
Excess tax benefits from the exercise of stock options	5	16	47
Net cash flows used in financing activities	(7,236)	(7,303)	(7,215)
Effect of exchange rate changes on cash and cash equivalents	409	229	167
Net increase (decrease) in cash and cash equivalents	19,021	9,001	(133)
Cash and cash equivalents at beginning of year	78,889	69,888	70,021
Cash and cash equivalents at end of year	97,910	78,889	69,888
Supplemental disclosures of cash flow information:
Income tax payments	2,905	4,462	5,711
Interest payments	246	246	316
Non-cash investing activities:
Purchases of property, plant and equipment in accounts payable	$ 884	$ 710	$ 2,418