XML 21 R6.htm IDEA: XBRL DOCUMENT v3.3.1.900
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Issuance of shares in connection with acquisitions (in shares) 148,769 36,000 52,542
Vesting of restricted stock for common stock (in shares)   69,675 67,021
Acquisition of treasury stock (in shares) 191,420 200,000 5,400
Issuance of treasury shares for vesting of restricted stock (in shares) 57,401 66,676