Note 7 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Goodwill [Table Text Block]

	March 31,
	2016			2015
Goodwill	$	41,137		$	38,356
Accumulated impairment losses		(13,192	)		(13,192	)
Accumulated currency translation adjustment		(570	)		-
Net goodwill at beginning of year		27,375			25,164
Goodwill acquired in acquisition		14,887			2,781
Currency translation adjustment		93			(570	)
Net goodwill at end of year	$	42,355		$	27,375

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Identifiable Intangible Assets
Identified intangible assets consisted of the following as of March 31, 2016 (in thousands):
	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
Developed intellectual property	$	17,309	$	11,639	$	5,670
Customer relationships		13,520		12,961		559
In-process intellectual property		1,188		-		1,188
Contract backlog		7,329		7,329		-
Other intangible assets		1,599		1,409		190
Total identifiable intangible assets	$	40,945	$	33,338	$	7,607

Identified intangible assets consisted of the following as of March 31, 2015 (in thousands):
	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
Developed intellectual property	$	16,304	$	8,084	$	8,220
Customer relationships		13,020		11,290		1,730
Contract backlog		7,155		7,155		-
Other intangible assets		1,608		1,174		434
Total identifiable intangible assets	$	38,087	$	27,703	$	10,384

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

	Acquisition Date			Estimated
	Fair Value		Amortization	Useful Life
	(In thousands)		Method	(In months)
RadioPulse
Developed intellectual property	$	1,005	Accelerated		60
In process intellectual property		1,188	Straight-line		60
Customer relationships		500	Accelerated		36
Contract backlog		174	Straight-line		6
Total for RadioPulse	$	2,867
Acquired MCU Business
Developed intellectual property	$	11,504	Straight-line		60
Customer relationships		6,920	Accelerated		36
Contract backlog		5,155	Straight-line		9
Trade name		421	Straight-line		60
Total for Acquired MCU Business	$	24,000
Zilog
Developed intellectual property	$	4,800	Straight-line		72
Customer relationships		6,100	Accelerated		37
Contract backlog		2,000	Straight-line		12
Trade name		1,100	Straight-line		72
Total for Zilog	$	14,000