Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Current:
State	$ 142	$ 102
Foreign	350	244
Current tax	492	346
Deferred tax assets	1,763		1,992
Deferred tax assets related to properties located in Australia	1,412		1,414
Deferred tax liabilities	1,318		1,214
Valuation allowance	$ 168		$ 165