Taxes on Income (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Taxes on Income [Abstract]
Tax benefit realized from equity compensation plans	$ 3,001,000	$ 3,212,000	$ 1,348,000
Operating loss carryforwards	5,699,000	601,000
Expiration dates, operating loss carryforwards	Dec. 31, 2030
Unrecognized tax benefits including interest and penalties	1,215,000
Amount that would impact the effective tax rate, if recognized	827,000
Income tax penalties and interest recognized	(421,000)	(43,000)	16,000
Accrued liabilities for payment of interest and penalties	$ 266,000	$ 790,000	$ 977,000