Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Allowances for accounts receivable	$ 997	$ 1,051
Common stock, par value	$ 0.02	$ 0.02
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	14,524,015	14,524,015
Common stock, shares outstanding	14,524,015	14,524,015