CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Trade receivables, allowances (in dollars)	$ 489	$ 593
Intangibles, accumulated amortization (in dollars)	$ 12,056	$ 8,996
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	41,908	35,496