Consolidated Balance Sheets [Parenthetical] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 334	$ 552
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares outstanding	12,144,485	12,729,837
Treasury Stock, shares	619,667	2,000
Class B Convertible Common Stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	3,000,000	3,000,000
Common stock, shares outstanding	1,025,158	1,025,176