SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 1 (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 customer
Schedule of Significant Accounting Policies
Number of customers with concentration risk			0
Foreign Currency Transaction Gain (Loss), before Tax	$ 2,256,000	$ 363,000	$ 6,033,000
Investments
Term of original or remaining maturity to classify available-for-sale securities as short-term (in days)	90 days
Fair value of investment	3,247,000	3,753,000
Prior Period Adjustment
Increase in net income due to error corrections			8,000,000
Auction-rate securities
Investments
Fair value of investment	1,066,000
Minimum [Member] | Auction-rate securities
Investments
Short-term interest rate reset period (in days)	7 days
Period of contractual maturities (in years)	10 years
Maximum [Member]
Cash and Cash Equivalents
Term of original or remaining maturity to classify investments as cash and cash equivalents (in days)	90 days
Maximum [Member] | Auction-rate securities
Investments
Short-term interest rate reset period (in days)	28 days
Reversal of Subcontractor Cost of Revenue Accruals [Member]
Prior Period Adjustment
Error correction and adjustment			6,900,000
Depreciation on Fixed Assets [Member]
Prior Period Adjustment
Error correction and adjustment			$ 1,700,000
Credit Concentration Risk | Accounts receivable
Schedule of Significant Accounting Policies
Number of customers with concentration risk	0	2