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Supplementary Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2015

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:

Available-for-sale securities:

	December 31, 2015
	Amortized		Aggregate		Unrealized	Unrealized
	cost		fair value		Gains	losses
	$ in thousands
Government and corporate bonds :
Classified as short term		410		409			(1)
Classified as long term*		5,666		5,637			(29)
		6,076		6,046			(30)

	December 31, 2014
	Amortized		Aggregate		Unrealized		Unrealized
	cost		fair value		Gains		losses
	$ in thousands
Government and corporate bonds :
Classified as long term*		5,942		5,890		2		(54	)
		5,942		5,890		2		(54	)

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:

	December 31
	2015			2014			2013
	$ in thousands
Balance at beginning of year		3,432			3,874			4,565
Increase (decrease) during the year		(206	)		485			(93	)
Bad debt written off		(333	)		(927	)		(598	)
Balance at end of year		2,893			3,432			3,874

NOTE 13 - SUPPLEMENTARY BALANCE SHEET INFORMATION (continued):

Other Accounts Receivable

	December 31
	2015		2014
	$ in thousands
(ii) Other:
Employees		917		1,014
Prepaid expenses		24,932		21,088
Receivable on account of the sale of the Thermal Products Business		12,000
Deposits in respect of rent and other		3,667		3,488
Government departments and agencies (mainly value added tax refundable)		9,736		8,522
Advance payments to suppliers		3,368		2,311
Derivative assets		288		1,665
Sundry		998		988
		55,906		39,076

Accounts Payable and Accruals Other

Accounts payable and accruals – other

	December 31
	2015		2014
	$ in thousands
Employees and employee institutions		33,784		28,932
Government departments and agencies		21,922		11,610
Derivative liabilities		1,943		2,109
Accrued expenses		37,270		33,511
Sundry		11		5,585
		94,930		81,747

Schedule of Deferred Revenue

Deferred income

	December 31
	2015		2014
	$ in thousands
Deferred income relating to warranty and installations commitments(*)		22,221		25,916
Deferred income		7,061		12,092
		29,282		38,008

*	The changes in deferred revenues relating to warranty and installation commitments:

Changes in Deferred Revenues

	December 31
	2015			2014
	$ in thousands
Balance at beginning of year		25,916			21,408
Revenue recognized during the year		(33,372	)		(25,661	)
Deferred revenues acquired		—			7,392
Deferred revenue relating to new sales		29,677			22,777
Balance at end of year		22,221			25,916

Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss)

	December 31
	2015			2014			2013
	$ in thousands
Accumulated gain (loss) in respect of derivative instruments designated for cash flows hedge, net of tax		(1,477	)		(1,928	)		409
Accumulated realized and unrealized loss on available for sale securities, net of tax		(29	)		(52	)
		(1,506	)		(1,980	)		409