Income Taxes Income tax (Details) (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Foreign Deferred Tax Assets [Member]	Dec. 31, 2011 Foreign Deferred Tax Assets [Member] Foreign Tax Authority [Member]	Dec. 31, 2010 Foreign Deferred Tax Assets [Member] Foreign Tax Authority [Member]	Dec. 31, 2013 Foreign Deferred Tax Assets [Member] UK	Dec. 31, 2011 Foreign Deferred Tax Assets [Member] UK	Dec. 31, 2010 Foreign Deferred Tax Assets [Member] UK	Dec. 31, 2013 Foreign Deferred Tax Assets [Member] AUSTRALIA
Operating Loss Carryforwards [Line Items]
State net operating loss carry forwards	$ 93,000,000
Foreign tax credits	2,100,000
Foreign net operating losses	21,000,000
Valuation Allowance, Deferred Tax Asset, Change in Amount					900,000	600,000	600,000	100,000	500,000	400,000	1,000,000
Gross unrecognized tax benefits	85,000	588,000	1,070,000	1,351,000
Interest and penalties realted to unrecognized tax benefits	200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	600,000
Undistributed earnings of foreign subsidiaries	$ 40,000,000