Earnings (Loss) Per Share Data (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings (loss) per common share - Basic:
Net income	$ 0.51	$ 0.17	$ 1.03	$ 0.67
Effect of Dilutive Securities [Abstract]
Convertible Securities	$ 71	$ 72	$ 142	$ 143
Stock options, warrants and awards	0	0	0	0
Convertible Securities (in shares)	6,402,000	2,309,000	5,078,000	3,314,000
Stock options, warrants and awards, common shares (in shares)	662,000	583,000	620,000	640,000
Earnings (loss) per common share - Diluted:
Net income plus assumed conversions	52,290	18,764	106,715	74,574
Diluted shares (in shares)	109,931,000	113,472,000	108,736,000	114,987,000
Diluted earnings per share (per share)	$ 0.48	$ 0.17	$ 0.98	$ 0.65
Aggregate number of stock options, warrants and awards excluded from the computation of diluted EPS (in shares)	800,000	2,300,000	800,000	2,600,000
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	$ 52,219	$ 18,692	$ 106,573	$ 74,431
Weighted Average Number of Shares Outstanding, Basic	102,867,000	110,580,000	103,038,000	111,033,000