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Acquistions Acquisitions (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Business Acquisition [Line Items]    
Goodwill $ 154,327 $ 153,291
Premiums and fees receivable 1,843,386 1,669,186
Noncontrolling interests $ 36,552 32,962
Selling and Marketing Expense [Member]    
Business Acquisition [Line Items]    
Business Acquisition, Percentage of Voting Interests Acquired 85.00%  
Cash and cash equivalents $ 1,072  
Real estate, furniture and equipment 701  
Goodwill and other intangibles assets 40,282  
Premiums and fees receivable 3,845  
Other assets 5,166  
Total assets acquired 51,066  
Other liabilities assumed (4,931)  
Noncontrolling interests (3,850)  
Net assets acquired $ 42,285 $ 42,300