INVESTMENTS: (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 3,448	$ 2,675
Gross Unrealized Losses	(79)	(215)
Gross Unrealized Gains	20	2
Fair Value	3,389	2,462
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	990	147
Gross Unrealized Losses	(1)	(2)
Gross Unrealized Gains	18	2
Fair Value	1,007	147
Government sponsored enterprise mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	102
Gross Unrealized Losses	0
Gross Unrealized Gains	1
Fair Value	103
Mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	2,356	2,528
Gross Unrealized Losses	(78)	(213)
Gross Unrealized Gains	1	0
Fair Value	$ 2,279	$ 2,315