Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash dividends paid, per share (in dollars per share)	$ 0.03	$ 0.23
Common Stock Par Value [Member] | Common Stock [Member]
Issuance of stock (in shares)	20,219,217
Issuance of nonvested common stock (in shares)	59,680	12,500
Class B Stock Par Value [Member] | Common Stock [Member]
Issuance of stock (in shares)	404,383