Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 16,484		$ 12,085
Certificates of deposit	10,064		8,110
Investments held to maturity at amortized cost	19,097		16,040
Accounts receivable, net	52,895		39,063
Income tax receivable	0		1,073
Notes receivable	29		29
Inventories, net	36,608		32,140
Prepaid expenses and other	829		304
Deferred tax assets	5,895		4,779
Total current assets	141,901		113,623
Property, plant and equipment:
Land	2,233		1,417
Buildings	63,164		61,821
Machinery and equipment	121,909		119,439
Furniture and fixtures	10,136		9,748
Total property, plant and equipment	197,442		192,425
Less: Accumulated depreciation	110,277		105,142
Property, plant and equipment, net	87,165		87,283
Certificates of deposit	6,000		2,638
Investments held to maturity at amortized cost	5,682		10,981
Note receivable	904		919
Total assets	241,652		215,444
Current liabilities:
Revolving credit facility	0		0
Accounts payable	10,904		7,779
Dividends payable	4,779		0
Accrued liabilities	33,857		28,550
Total current liabilities	49,540		36,329
Deferred revenue	841		585
Deferred tax liabilities	13,579		14,424
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued	0		0
Common stock, $.004 par value, 100,000,000 shares authorized, 55,049,445 and 55,067,031 issued and outstanding at June 30, 2014 and December 31, 2013, respectively	220	[1]	221	[1]
Additional paid-in capital	0		0
Retained earnings	177,472		163,885
Total stockholders' equity	177,692		164,106
Total liabilities and stockholders' equity	$ 241,652		$ 215,444

[1] Reflects three-for-two stock split effective July 16, 2014