Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts (in Dollars)	$ 460	$ 430
Accumulated depreciation (in Dollars)	19,421	18,239
Accumulated amortization (in Dollars)	$ 4,270	$ 3,385
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	22,111,675	23,644,301
Common stock outstanding	22,102,549	23,644,301
Treasury stock, shares	9,126	0