Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 11,027	$ 3,651	$ 2,165
Additions for tax positions of the current year	126	9,039	1,775
Additions for tax positions of prior year	245	2,316	286
Odyssey balance at date of acquisition			1,331
Changes in judgment	(2,312)	(584)	29
Settlements during the period	(274)	(3,184)	(4)
Lapses of applicable statute of limitations	(456)	(211)	(1,931)
Ending balance	$ 8,356	$ 11,027	$ 3,651

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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