Consolidated Statements of Shareholders' Equity (Parentheticals) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock [Member] | Common Class A [Member]
Shares of treasury stock purchased	11,445	324,093	51,864
Shares of common stock issued for the exercise of stock options	155,253	786,303	176,013
Issuance of restriced shares, net of forfeitures		10,074	42,969
Dividends declared per common share (in Dollars per share)	$ 0.05	$ 0.42	$ 0.15
Common Stock [Member] | Common Class B [Member]
Shares of treasury stock purchased	1,908	54,015	8,644
Shares of common stock issued for the exercise of stock options	31,876	131,051	29,336
Issuance of restriced shares, net of forfeitures		1,679	7,162
Dividends declared per common share (in Dollars per share)	$ 0.31	$ 2.54	$ 0.88
Common Class A [Member]
Shares of common stock issued for the exercise of stock options	155,253
Common Class B [Member]
Shares of common stock issued for the exercise of stock options	31,875