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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)
In Thousands
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-In Capital [Member]
USD ($)
Common Shares Held In Treasury [Member]
USD ($)
Retained Earnings [Member]
USD ($)
Accumulated Other Comprehensive Income (Loss) [Member]
USD ($)
Noncontrolling Interest [Member]
USD ($)
Total
USD ($)
BALANCE at Dec. 31, 2009     $ 158,748 $ (292) $ (89,150) $ 2,669 $ 4,492 $ 76,467
BALANCE (in shares) at Dec. 31, 2009 25,000 301            
Net income (loss)     0 0 11,530 0 (184) 11,346
Pension liability adjustments     0 0 0 5,089 0 5,089
Unrealized gain on marketable securities     0 0 0 8 0 8
Unrealized gain (loss) on derivatives     0 0 0 (1,710) 0 (1,710)
Currency translation adjustments     0 0 0 (1,994) 0 (1,994)
Exercise of share options     266 0 0 0 0 266
Exercise of share options (in shares) 26 0            
Issuance of restricted Common Shares ( in shares) 667 0            
Forfeited restricted Common Shares ( in shares) (243) 243            
Repurchased Common Shares for treasury     0 (826) 0 0 0 (826)
Repurchased Common Shares for treasury ( in shares) (57) 57            
Share-based compensation matters     2,573 0 0 0 0 2,573
BALANCE at Dec. 31, 2010     161,587 (1,118) (77,620) 4,062 4,308 91,219
BALANCE (in shares) at Dec. 31, 2010 25,393 601            
Net income (loss)     0 0 49,357 0 (3,820) 45,537
Unrealized gain on marketable securities     0 0 0 16 0 16
Unrealized gain (loss) on derivatives     0 0 0 (7,722) 0 (7,722)
Currency translation adjustments     0 0 0 (5,971) 0 (5,971)
Business acquisition     5,113 0 0 0 48,727 53,840
Business acquisition ( in shares) 647 0            
Capital contribution from noncontrolling interest     0 0 0 0 397 397
Exercise of share options     194 0 0 0 0 194
Exercise of share options (in shares) 19 0            
Issuance of restricted Common Shares ( in shares) 437 0            
Forfeited restricted Common Shares ( in shares) (223) 223            
Repurchased Common Shares for treasury     0 (752) 0 0 0 (752)
Repurchased Common Shares for treasury ( in shares) (51) 51            
Share-based compensation matters     3,881 0 0 0 0 3,881
BALANCE at Dec. 31, 2011     170,775 (1,870) (28,263) (9,615) 49,612 180,639
BALANCE (in shares) at Dec. 31, 2011 26,222 875            
Net income (loss)     0 0 5,361 0 (1,613) 3,748
Pension liability adjustments     0 0 0 (27) 0 (27)
Unrealized gain on marketable securities     0 0 0 0 0 0
Unrealized gain (loss) on derivatives     0 0 0 9,862 0 9,862
Currency translation adjustments     0 0 0 (10,502) (3,918) (10,502)
Business acquisition     10,197 0 0 0 0 10,197
Business acquisition ( in shares) 1,294 0            
Exercise of share options (in shares)               0
Issuance of restricted Common Shares ( in shares) 653 (611)            
Forfeited restricted Common Shares ( in shares) (142) 142            
Repurchased Common Shares for treasury     0 (15) 0 0 0 (15)
Repurchased Common Shares for treasury ( in shares) (114) 114            
Share-based compensation matters     3,850 0 0 0 0 3,850
BALANCE at Dec. 31, 2012     $ 184,822 $ (1,885) $ (22,902) $ (10,282) $ 44,081 $ 193,834
BALANCE (in shares) at Dec. 31, 2012 27,913 520