Consolidated Condensed Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Consolidated Condensed Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 108	$ 114
Common shares, par value	$ 1.00	$ 1.00
Common shares, shares authorized	20,000,000	20,000,000
Common shares, shares issued	5,707,000	5,687,000
Common shares, shares outstanding	5,707,000	5,687,000