Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity, Class of Treasury Stock [Line Items]
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00	$ 1.00
Proceeds from issuance of common stock	$ 1,629	$ 41,713	$ 54,501
Treasury Stock, Shares, Acquired	0	0	100,000
Maximum number of shares authorized (in shares)			750,000
Average cost of repurchased stock (in dollars per share)			$ 8.66
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Number of common stock issued (in shares)		4,000,000	7,015,000
Public offering Price (in dollars per share)		$ 11.00	$ 8.25