Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,056	$ 1,293
Convertible preferred stock, par value	$ 1,000.00	$ 1,000.00
Convertible preferred stock, authorized shares	500	500
Convertible preferred stock, issued shares	0	0
Convertible preferred stock, outstanding shares	0	0
Common stock, par value	$ 100.00	$ 100.00
Common stock, shares authorized	80,000	80,000
Common stock, shares issued	14,855	14,855
Common stock, shares outstanding	14,117	13,871
Treasury Stock, shares	738	984