Restructuring and Relocation - HQ Relocation (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended	12 Months Ended		6 Months Ended	3 Months Ended																12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Headquarters Relocation	Mar. 31, 2013 Headquarters Relocation	Jun. 30, 2012 Headquarters Relocation	Mar. 31, 2012 Headquarters Relocation	Jun. 30, 2013 Headquarters Relocation	Dec. 31, 2012 Headquarters Relocation	Dec. 31, 2011 Headquarters Relocation position	Jun. 30, 2013 Headquarters Relocation Maximum	Jun. 30, 2013 Headquarters Relocation Total Exit Costs	Mar. 31, 2013 Headquarters Relocation Total Exit Costs	Jun. 30, 2012 Headquarters Relocation Total Exit Costs	Mar. 31, 2012 Headquarters Relocation Total Exit Costs	Jun. 30, 2013 Headquarters Relocation One-Time Termination Costs	Mar. 31, 2013 Headquarters Relocation One-Time Termination Costs	Jun. 30, 2012 Headquarters Relocation One-Time Termination Costs	Mar. 31, 2012 Headquarters Relocation One-Time Termination Costs	Jun. 30, 2013 Headquarters Relocation Relocation, Recruiting, and Other Costs	Mar. 31, 2013 Headquarters Relocation Relocation, Recruiting, and Other Costs	Jun. 30, 2012 Headquarters Relocation Relocation, Recruiting, and Other Costs	Mar. 31, 2012 Headquarters Relocation Relocation, Recruiting, and Other Costs	Jun. 30, 2013 Headquarters Relocation Other Relocation Costs	Mar. 31, 2013 Headquarters Relocation Other Relocation Costs	Jun. 30, 2012 Headquarters Relocation Other Relocation Costs	Mar. 31, 2012 Headquarters Relocation Other Relocation Costs	Dec. 31, 2011 Other restructuring position
Restructuring Cost and Reserve [Line Items]
Expected number of positions relocated from Cincinnati											300
Expected number of positions relocated from elsewhere in the US																													100
Relocation expected cost										$ 30,000,000
Relocation expected capital expenditures										5,000,000
Relocation, cost incurred to date									26,000,000
Relocation, cost incurred to date, capital expenditures									5,000,000
Relocation, expected costs remaining - less than												1,000,000
Restructuring Reserve Roll Forward
Beginning balance					2,006,000	3,027,000	7,027,000	5,655,000	3,027,000	5,655,000			2,006,000	3,109,000	7,027,000	5,547,000	1,204,000	2,031,000	5,899,000	5,303,000	802,000	1,078,000	1,128,000	244,000	0	(82,000)	0	108,000
Amounts expensed	41,000	6,770,000	258,000	10,633,000	(7,000)	199,000	6,770,000	3,863,000					(7,000)	117,000	4,707,000	3,515,000	(23,000)	63,000	1,026,000	1,131,000	16,000	54,000	3,681,000	2,384,000	0	82,000	2,063,000	348,000
Amounts paid					(1,262,000)	(1,220,000)	(5,718,000)	(2,491,000)					(1,262,000)	(1,220,000)	(3,937,000)	(2,035,000)	(585,000)	(890,000)	(1,225,000)	(535,000)	(677,000)	(330,000)	(2,712,000)	(1,500,000)	0	0	(1,781,000)	(456,000)
Ending balance					$ 737,000	$ 2,006,000	$ 8,079,000	$ 7,027,000	$ 737,000	$ 3,027,000	$ 5,655,000		$ 737,000	$ 2,006,000	$ 7,797,000	$ 7,027,000	$ 596,000	$ 1,204,000	$ 5,700,000	$ 5,899,000	$ 141,000	$ 802,000	$ 2,097,000	$ 1,128,000	$ 0	$ 0	$ 282,000	$ 0