Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	5 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2011
Schedule of change in the balance of unrecognized income tax benefits
Balance at beginning of period	$ 2,340	$ 1,050	$ 223	$ 2,507	$ 1,050
Additions based on tax positions related to the current period	167	90		89	979
Additions for tax positions of prior periods			319		311
Reductions for tax positions of prior periods
Settlements				(2,373)
Lapses of statutes of limitations
Balance at end of period	$ 2,507	$ 1,140	$ 542	$ 223	$ 2,340