Supplementary Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2013

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Aggregate Fair Value and Unrealized Holding Gains and Losses by Major Security Type

The amortized cost basis, aggregate fair value and unrealized holding gains and losses by major security type were as follows:

	December 31,									December 31,
	2013									2012
	Amortized cost		Aggregate fair value (1)		Unrealized Gains (1)		Unrealized losses			Amortized cost		Aggregate fair value (1)		Unrealized Gains (1)		Unrealized losses
	$ in thousands
Government and corporate debentures:
Classified as short term		5,265		5,279		27		(13	)		2,238		2,221				(17	)
Classified as long term *		13,106		12,949		24		(181	)		12,788		12,831		97		(54	)
		18,371		18,228		51		(194	)		15,026		15,052		97		(71	)

* Matured in less than 5 years

(1) Marketable securities are valued based on quoted market prices in active markets (level 1). Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment.

Balance and Changes in Allowance

(i) Trade accounts receivable are presented net of an allowance for doubtful accounts, the balance and the changes in the allowance are comprised as follows:

	Year ended December 31
	2013			2012			2011
	$ in thousands
Balance at beginning of year		4,565			4,330			7,545
Increase (decrease) during the year		(93	)		1,849			(1,265	)
Bad debt written off		(598	)		(1,614	)		(1,950	)
Balance at end of year		3,874			4,565			4,330

Other Accounts Receivable

	December 31
	2013		2012
	$ in thousands
(ii) Other:
Employees		1,360		1,360
Prepaid expenses		14,122		12,832
Deposits in respect of rent and other		3,221		4,042
Israeli Government departments and agencies (mainly value added tax refundable		5,591		1,717
Advance payments to suppliers		5,299		1,725
Derivative assets		1,319		2,338
Sundry		634		5,822
		31,546		29,836

Accounts Payable and Accruals Other

d. Accounts payable and accruals - other

	December 31
	2013		2012
	$ in thousands
Employees and employee institutions		23,812		15,078
Government departments and agencies		9,903		7,238
Provision for restructuring				1,396
Derivative liabilities		131		573
Accrued expenses		18,942		22,337	*
Sundry		2,694		2,262
		55,482		48,884

* Includes a provision of $3,273,000 for non cancelable commitments included in the write- down of inventories of $14,255,000.

Schedule of Deferred Revenue

e. Deferred income

	December 31
	2013		2012
	$ in thousands
Deferred income relating to warranty commitments(*)		21,408		15,588
Deferred income		3,446		1,800
		24,854		17,388

* The changes in deferred revenues relating to warranty commitments:

Changes in Deferred Revenues

	Year ended December 31
	2013			2012
	$ in thousands
Balance at beginning of year		15,588			24,110
Revenue recognized during the year		(21,173	)		(29,608	)
Deferred revenue relating to new sales		26,993			21,086
Balance at end of year		21,408			15,588

Accumulated Other Comprehensive Income (Loss)

f. Accumulated other comprehensive income (loss)

	December 31
	2013		2012		2011
	$ in thousands
Accumulated gain (loss) in respect of derivative instruments designated for cash flows hedge, net of tax		409		628		(600	)
Accumulated currency translation adjustment						(860	)
		409		628		(1,460	)