CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]
Shares issued in exercise of options (in shares)	16,960	833,334	455,051
Release from treasury stock for equity plans, net of return of shares to treasury for forfeited shares	125,108	165,348	150,173