Income Taxes - Narrative (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		65 Months Ended	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 ownership	Dec. 31, 2012 Internal Revenue Service (IRS) [Member]	Aug. 31, 2012 Internal Revenue Service (IRS) [Member]	Dec. 31, 2010 Internal Revenue Service (IRS) [Member]	Dec. 31, 2012 State and Local Jurisdiction [Member]	Dec. 31, 2011 State and Local Jurisdiction [Member]	Dec. 31, 2010 State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses				$ 158,282				$ 164,122
Operating loss carryforwards, expiration dates				2026			2015
Number of changes in ownership			2
Operating loss carryforwards decrease					1,900	83,503			46,243
Deferred tax assets, gross	80,347	58,359	58,359
Expense (benefit) from foreign income tax expense	$ 5	$ (9)