Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 4,155	$ 10,081
Accounts receivable, net	15,527	14,246
Inventories, net	19,661	19,578
Deferred income taxes	2,495	2,495
Prepaid expenses and other	2,063	1,025
Total current assets	43,901	47,425
Other assets:
Goodwill	34,380	34,186
Other intangible assets	1,924	2,045
Assets held for sale	6,649	6,649
Other assets	129	94
Total other assets	43,082	42,974
Property and equipment:
Land	11,465	11,321
Buildings	32,542	32,255
Equipment	124,576	124,100
Construction in progress	1,350	1,477
Property and equipment	169,933	169,153
Less accumulated depreciation	118,875	118,026
Net property and equipment	51,058	51,127
Total assets	138,041	141,526
LIABILITIES AND STOCKHOLDERS' EQUITY
Current maturities of note payable to affiliate	1,000	1,000
Accounts payable and accrued liabilities	13,075	16,240
Income taxes payable to affiliate	239	194
Income taxes	448	1,326
Total current liabilities	14,762	18,760
Noncurrent liabilities:
Long-term debt	22,233	23,185
Deferred income taxes	14,749	14,166
Other	747	705
Total noncurrent liabilities	37,729	38,056
Stockholders' equity:
Preferred stock
Additional paid-in capital	55,125	55,125
Retained earnings	17,942	17,967
Accumulated other comprehensive income	12,359	11,494
Total stockholders' equity	85,550	84,710
Total liabilities and stockholders' equity	138,041	141,526
Commitments and contingencies (Note 1)
Common Stock Class A [Member]
Stockholders' equity:
Common stock	24	24
Common Stock Class B [Member]
Stockholders' equity:
Common stock	$ 100	$ 100