CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 53,312	$ 71,262
Accounts receivable - less allowance for doubtful accounts of $760 and $743 at March 31, 2013 and December 31, 2012, respectively	48,649	43,086
Inventories	60,696	54,924
Restricted cash	12,993	12,993
Prepaid expenses and other current assets	6,765	4,482
Refundable income taxes	2,988	2,955
Deferred income taxes	2,545	1,434
Total Current Assets	187,948	191,136
Property, plant and equipment - net	38,823	34,988
Deferred income taxes	3,648	1,403
Intangible assets - net	20,067	20,963
Goodwill	22,038	14,218
Other assets	12,840	12,510
TOTAL ASSETS	285,364	275,218
Current Liabilities:
Accounts payable	25,135	18,862
Accrued expenses	34,437	25,360
Accrued restructuring costs	0	122
Notes payable	122	205
Income taxes payable	1,207	1,040
Dividends payable	799	799
Total Current Liabilities	61,700	46,388
Long-term Liabilities:
Liability for uncertain tax positions	2,168	2,161
Minimum pension obligation and unfunded pension liability	11,462	11,045
Other long-term liabilities	234	233
Total Long-term Liabilities	13,864	13,439
Total Liabilities	75,564	59,827
Commitments and Contingencies
Stockholders' Equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	17,583	20,452
Retained earnings	193,897	195,212
Accumulated other comprehensive loss	(2,816)	(1,427)
Total Stockholders' Equity	209,800	215,391
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	285,364	275,218
Class A [Member]
Stockholders' Equity:
Common Stock	217	217
Class B [Member]
Stockholders' Equity:
Common Stock	$ 919	$ 937