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Consolidated Statements Of Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Loss [Member]
Noncontrolling Interests [Member]
BALANCE - value at Dec. 31, 2013 $ 242,101 $ 6   $ 275,183 $ (31,770) $ (473) $ (845)
BALANCE - shares at Dec. 31, 2013   59,670          
Share-based compensation, Value 2,694     2,694      
Share-based compensation, Shares   118          
Vesting of restricted stock units, including impact of shares withheld for taxes, value (497)     (497)      
Vesting of restricted stock units, including impact of shares withheld for taxes, shares   111          
Exercise of stock options and purchases from employee stock plan, Value 1,568     1,568      
Exercise of stock options and purchases from employee stock plan, Shares   271          
Excess income tax benefit from share-based compensation 206     206      
Purchase of noncontrolling interests (143)     (988)     $ 845
Net income (loss) 10,295       10,295    
Other comprehensive income (loss)—net of tax (261)         (261)  
BALANCE - value at Dec. 31, 2014 255,963 $ 6   278,166 (21,475) (734)  
BALANCE - shares at Dec. 31, 2014   60,170          
Share-based compensation, Value 4,040     4,040      
Share-based compensation, Shares   154          
Vesting of restricted stock units, including impact of shares withheld for taxes, value (267)     (267)      
Vesting of restricted stock units, including impact of shares withheld for taxes, shares   115          
Exercise of stock options and purchases from employee stock plan, Value 1,365     1,365      
Exercise of stock options and purchases from employee stock plan, Shares   270          
Excess income tax benefit from share-based compensation (57)     (57)      
Purchase of treasury stock, value (1,433)   $ (1,433)        
Purchase of treasury stock, shares     (278)        
Net income (loss) (6,189)       (6,189)    
Other comprehensive income (loss)—net of tax (1,249)         (1,249)  
BALANCE - value at Dec. 31, 2015 252,173 $ 6 $ (1,433) 283,247 (27,664) (1,983)  
BALANCE - shares at Dec. 31, 2015   60,709 (278)        
Share-based compensation, Value 2,455     2,455      
Share-based compensation, Shares   148          
Vesting of restricted stock units, including impact of shares withheld for taxes, value (171)     (171)      
Vesting of restricted stock units, including impact of shares withheld for taxes, shares   74          
Exercise of stock options and purchases from employee stock plan, Value 905     905      
Exercise of stock options and purchases from employee stock plan, Shares   309          
Excess income tax benefit from share-based compensation (133)     (133)      
Net income (loss) (8,177)       (8,177)    
Other comprehensive income (loss)—net of tax 838         838  
BALANCE - value at Dec. 31, 2016 $ 247,890 $ 6 $ (1,433) $ 286,303 $ (35,841) $ (1,145)  
BALANCE - shares at Dec. 31, 2016   61,240 (278)