Consolidated Statements of Shareholders' Equity Statement (USD $) In Thousands, unless otherwise specified	6 Months Ended				6 Months Ended				6 Months Ended				3 Months Ended	6 Months Ended			6 Months Ended				6 Months Ended
	Jun. 30, 2014 Preferred Stock Including Additional Paid in Capital [Member]	Jun. 30, 2013 Preferred Stock Including Additional Paid in Capital [Member]	Dec. 31, 2013 Preferred Stock Including Additional Paid in Capital [Member]	Dec. 31, 2012 Preferred Stock Including Additional Paid in Capital [Member]	Jun. 30, 2014 Common Stock [Member]	Jun. 30, 2013 Common Stock [Member]	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Jun. 30, 2014 Additional Paid-in Capital [Member]	Jun. 30, 2013 Additional Paid-in Capital [Member]	Dec. 31, 2013 Additional Paid-in Capital [Member]	Dec. 31, 2012 Additional Paid-in Capital [Member]	Jun. 30, 2014 Accumulated Other Comprehensive (Loss) Income [Member]	Jun. 30, 2013 Accumulated Other Comprehensive (Loss) Income [Member]	Dec. 31, 2013 Accumulated Other Comprehensive (Loss) Income [Member]	Dec. 31, 2012 Accumulated Other Comprehensive (Loss) Income [Member]	Jun. 30, 2014 Retained Earnings [Member]	Jun. 30, 2013 Retained Earnings [Member]	Dec. 31, 2013 Retained Earnings [Member]	Dec. 31, 2012 Retained Earnings [Member]	Jun. 30, 2014 Shareholders' Equity [Member]	Jun. 30, 2013 Shareholders' Equity [Member]	Dec. 31, 2013 Shareholders' Equity [Member]	Dec. 31, 2012 Shareholders' Equity [Member]
Total shareholders' equity	$ 109,658	$ 109,658	$ 109,658	$ 55,407	$ 547	$ 552	$ 543	$ 543	$ 762,502	$ 767,172	$ 761,550	$ 759,214	$ 30,944	$ (35,100)	$ (33,816)	$ 52,511	$ (290,737)	$ (235,045)	$ (252,059)	$ (250,965)	$ 612,914	$ 607,237	$ 585,876	$ 616,710
Stock issuance	0	54,251			1	7			165	7,466											166	61,724
Granting and vesting of restricted stock					4	3			1,350	1,096											1,354	1,099
Amortization of stock issuance costs									(59)	(59)											(59)	(59)
Adjustments for tax withholding on share-based compensation					(1)	(1)			(504)	(545)											(505)	(546)
Net (loss) income																	(6,733)	51,136			(6,733)	51,136
Dividends on preferred stock																	(4,588)	(3,313)			(4,588)	(3,313)
Dividends on common stock																	(27,357)	(31,903)			(27,357)	(31,903)
Other comprehensive income													$ 64,760	$ (87,611)							$ 64,760	$ (87,611)