Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Composition of Goodwill and Changes

Composition of goodwill and changes therein the years ended December 31, 2014 and 2013 are as follows:

	December 31
	2014		2013
	$ in thousands
Balance at the beginning of year		12,444		12,444
Acquired during the year (see Note 3)		167,001
Balance at the end of the year		179,445		12,444

Summary of Other Intangible Assets

Other intangible assets are composed as follows:

	December 31
	2014		2013
	$ in thousands
Cost:
Intellectual property		120,780		59,910
Customer relations		100,831		31,063
Trade name		5,960
In-process research and development		6,920
Backlog		10,398
		244,889		90,973
Less:
Accumulated amortization		99,807		80,572
		145,082		10,401

Estimated Amortization Expense

Estimated amortization expense for the years stated below is as follows:

	$ in thousands
Year ending December 31:
2015		33,030
2016		25,273
2017		25,213
2018		25,201
2019		17,919
2020 and thereafter		11,526
		138,162