Income Taxes Income Taxes - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 16, 2014
Income Tax Disclosure [Abstract]
Business Combination, Indemnification Assets, Amount as of Acquisition Date				$ 1,100,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	100,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit, beginning of period	582,000	8,565,000	2,109,000
Additions for tax positions related to the current year	573,000	190,000	0
Additions for tax positions of prior years	2,097,000	207,000	7,390,000
Reductions for tax positions of prior years	(326,000)	(8,380,000)	(934,000)
Unrecognized tax benefit, end of period	$ 2,926,000	$ 582,000	$ 8,565,000