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Consolidated Statement of Shareholders' Equity (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Treasury Stock
Total Shareholders' Equity
Noncontrolling Interests
Balance at Dec. 31, 2009 $ 92,225 $ 138 $ 43,210 $ 75,632 $ (31,628) $ 87,352 $ 4,873
Balance, shares at Dec. 31, 2009   13,829,000     (2,215,000)    
Proceeds from exercise of stock options 420 1 419     420  
Proceeds from exercise of stock options, shares 142,002 68,000          
Net tax benefit from exercise of stock options 336   336     336  
Issuance of restricted stock, shares   93,000          
Cancellation of restricted stock   (10,000)          
Compensation expense - restricted stock 1,245   1,245     1,245  
Compensation expense - stock options 47   47     47  
Purchase of business 8,133           8,133
Sale of business (92)           (92)
Acquisitions and sales of non controlling interests, net 350   313     313 37
Purchase and retirement of treasury stock (1,401)     (1,401)   (1,401)  
Purchase and retirement of treasury stock, shares   (87,000)          
Distributions to noncontrolling interest partners (9,580)           (9,580)
Net income 24,700     15,645   15,645 9,055
Balance at Dec. 31, 2010 116,383 139 45,570 89,876 (31,628) 103,957 12,426
Balance, shares at Dec. 31, 2010   13,893,000     (2,215,000)    
Proceeds from exercise of stock options, shares 375,080 139,000          
Net tax benefit from exercise of stock options 217   217     217  
Issuance of restricted stock, shares   160,000          
Cancellation of restricted stock   (18,000)          
Compensation expense - restricted stock 2,032   2,032     2,032  
Transfer of compensation liability for certain stock issued pursuant to long - term incentive plans 199   199     199  
Purchase of business 8,096           8,096
Acquisitions and sales of non controlling interests, net (13,083)   (11,885)     (11,885) (1,198)
Settlement of purchase price (3,835)           (3,835)
Purchase and retirement of treasury stock (4,656)     (4,656)   (4,656)  
Purchase and retirement of treasury stock, shares   (255,000)          
Distributions to noncontrolling interest partners (9,767)           (9,767)
Cash dividends to shareholders (3,789)     (3,789)   (3,789)  
Net income 29,783     20,974   20,974 8,809
Balance at Dec. 31, 2011 121,580 139 36,133 102,405 (31,628) 107,049 14,531
Balance, shares at Dec. 31, 2011   13,919,000     (2,215,000)    
Proceeds from exercise of stock options 22 2 20     22  
Proceeds from exercise of stock options, shares 3,802,263 130,000          
Net tax benefit from exercise of stock options 1,209   1,209     1,209  
Issuance of restricted stock, shares   81,000          
Compensation expense - restricted stock 2,102   2,102     2,102  
Transfer of compensation liability for certain stock issued pursuant to long - term incentive plans 135   135     135  
Purchase of business 2,892           2,892
Acquisitions and sales of non controlling interests, net (1,199)   (955)     (955) (244)
Contribution of noncontrolling interest partners 49           49
Transfer of losses from noncontrolling interests     (1,155)     (1,155) 1,155
Distributions to noncontrolling interest partners (9,332)           (9,332)
Cash dividends to shareholders (9,017)     (9,017)   (9,017)  
Net income 26,218     17,933   17,933 8,285
Balance at Dec. 31, 2012 $ 134,659 $ 141 $ 37,489 $ 111,321 $ (31,628) $ 117,323 $ 17,336
Balance, shares at Dec. 31, 2012   14,130,000     (2,215,000)