Consolidated Condensed Balance Sheets(Unaudited) (Parentheticals) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Accounts Receivable Allowance (in Dollars)	$ 1,592	$ 1,537
Drivers' Advances and Other Receivables Allowance (in Dollars)	$ 282	$ 2,499
Treasury stock shares	1,099,009	1,278,408
Common Class A [Member]
Par value (in Dollars per share)	$ 0.01	$ 0.01
Shares authorized	20,000,000	20,000,000
Shares issued	13,469,090	13,469,090
Shares Outstanding	12,370,081	12,190,682
Common Class B [Member]
Par value (in Dollars per share)	$ 0.01	$ 0.01
Shares authorized	5,000,000	5,000,000
Shares issued	2,350,000	2,350,000
Shares Outstanding	2,350,000	2,350,000