Consolidated Statement of Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Common stock, shares issued	4,800,000
Common stock, shares repurchased	3,250	1,111,690
Warrants repurchased	1,400,000
Preferred stock, issuance costs		$ 256,000
Common stock issued 2009 Participation Plan (in shares)	3,000
Other comprehensive income:
Tax on unrealized (loss) gain on securities	2,132,000	(5,000)	(129,000)
Tax on foreign currency translation gain	3,311,000	4,269,000	1,472,000	160,000
Tax on forward foreign currency loss	$ (1,347,000)