Condensed Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income of Continuing Operations [Member]	Accumulated Other Comprehensive Income of Discontinued Operations [Member]	Total
Balance at Dec. 31, 2009	$ 694	$ (150)	$ 1,296,391	$ 264,917	$ 82,994	$ 40,316	$ 1,685,162
Balance, (in shares) at Dec. 31, 2009	69,412,000	246,000
Net income / (loss)	0	0	0	(104,667)	0	0	(104,667)
Foreign currency translation adjustment	0	0	0	0	(22,770)	(40,316)	(63,086)
Comprehensive income	0	0	0	(104,667)	(22,770)	(40,316)	(167,753)
Common stock issued in connection with options (in shares)	263,000	0
Common stock issued in connection with options	3	0	5,915	0	0	0	5,918
Common stock issued in connection with acquisitions (in shares)	1,078,000	0
Common stock issued in connection with acquisitions	11	0	41,333	0	0	0	41,344
Balance at Dec. 31, 2010	708	(150)	1,343,639	160,250	60,224	0	1,564,671
Balance, (in shares) at Dec. 31, 2010	70,753,000	246,000
Net income / (loss)	0	0	0	4,135	0	0	4,135
Foreign currency translation adjustment	0	0	0	0	168,169	0	168,169
Comprehensive income	0	0	0	4,135	168,169	0	172,304
Common stock issued in connection with options (in shares)	83,000	0
Common stock issued in connection with options	0	0	1,407	0	0	0	1,407
Common stock issued in connection with acquisitions (in shares)	1,897,000	0
Common stock issued in connection with acquisitions	19	0	23,156	0	0	0	23,175
Balance at Jun. 30, 2011	$ 727	$ (150)	$ 1,368,202	$ 164,385	$ 228,393	$ 0	$ 1,761,557
Balance, (in shares) at Jun. 30, 2011	72,733,000	246,000