Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Increase (Decrease) in Stockholders' Equity
Balance			$ 158,283
Balance (in shares)			173,644,532
Net loss attributable to the Company	$ (10,213)	$ (9,351)	$ (30,490)	$ (81,331)
Other comprehensive income			347
Stock based compensation			5,835
Stock option exercises			166
Exercise of warrants			47
Shares issued for acquisition			14,459
Balance	$ 148,647		$ 148,647
Balance (in shares)	180,338,980		180,338,980
Common Stock
Increase (Decrease) in Stockholders' Equity
Balance			$ 1,736
Balance (in shares)			173,644,532
Stock based compensation			$ 1
Stock based compensation (in shares)			65,421
Stock option exercises			$ 2
Stock option exercises (in shares)			173,334
Stock dividend (in shares)			34,272
Exercise of warrants (in shares)			26,882
Shares issued for acquisition			$ 64
Shares issued for acquisition (in shares)			6,394,539
Balance	$ 1,803		$ 1,803
Balance (in shares)	180,338,980		180,338,980
Additional Paid-in-Capital
Increase (Decrease) in Stockholders' Equity
Balance			$ 1,096,392
Stock based compensation			5,834
Stock option exercises			164
Stock dividend			78
Exercise of warrants			47
Shares issued for acquisition			14,395
Balance	$ 1,116,910		1,116,910
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity
Balance			898
Other comprehensive income			347
Balance	1,245		1,245
Treasury Stock
Increase (Decrease) in Stockholders' Equity
Balance			$ (2,662)
Balance (in shares)			378,116
Net loss attributable to the Company
Other comprehensive income
Stock based compensation
Stock based compensation (in shares)
Stock option exercises
Stock dividend
Stock dividend (in shares)
Exercise of warrants
Shares issued for acquisition
Balance	$ (2,662)		$ (2,662)
Balance (in shares)	378,116		378,116
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity
Balance			$ (938,081)
Net loss attributable to the Company			(30,490)
Stock dividend			(78)
Balance	$ (968,649)		$ (968,649)