CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Receivables, allowance for doubtful accounts	$ 215	$ 436
Shareholders' equity:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, stated value (in dollars per share)	$ 0.1	$ 0.1
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, issued (in shares)	13,494,399	13,396,176
Common stock, outstanding (in shares)	13,494,399	13,396,176