Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 22,953	$ 37,437
Marketable securities	36,404	55,586
Accounts receivable	85,400	82,554
Less allowance for doubtful accounts	1,078	6,111
Accounts receivable, net	84,322	76,443
Inventories:
Finished goods	36,078	33,851
Work in process	49,690	40,340
Raw materials	6,746	9,173
Total inventory	92,514	83,364
Deferred tax assets	8,083	8,906
Income tax receivable	213
Other current assets	19,584	9,018
Total current assets	264,073	270,754
Land and land improvements	4,007	2,010
Buildings	37,809	30,708
Machinery and equipment	114,056	90,700
PROPERTY, PLANT AND EQUIPMENT	155,872	123,418
Less allowance for depreciation	66,283	61,553
PROPERTY, PLANT AND EQUIPMENT, NET	89,589	61,865
GOODWILL	11,485	14,325
INTANGIBLE ASSETS	24,698	3,397
NOTE RECEIVABLE	3,695	3,571
Total assets	393,540	353,912
CURRENT LIABILITIES:
Accounts payable	38,323	39,077
Federal and state income taxes		1,642
Accrued liabilities	15,907	15,254
Total current liabilities	54,230	55,973
DEFERRED INCOME TAX	6,759	7,368
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, $1 par value: Authorized: 12,000,000 Issued: 7,440,518	7,441	7,441
Paid-in capital	4,998	4,472
Retained earnings	336,895	295,643
Accumulated other comprehensive income	8	53
Stockholders' Equity before Treasury Stock	349,342	307,609
Treasury stock, at cost	16,791	17,038
Total stockholders' equity	332,551	290,571
Total liabilities and stockholders' equity	$ 393,540	$ 353,912