Note 7 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Goodwill [Table Text Block]

	March 31,
	2017			2016
Goodwill	$	56,024		$	41,137
Accumulated impairment losses		(13,192	)		(13,192	)
Accumulated currency translation adjustment		(477	)		(570	)
Net goodwill at beginning of year		42,355			27,375
Goodwill acquired in acquisition		-			14,887
Currency translation adjustment		(128	)		93
Net goodwill at end of year	$	42,227		$	42,355

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

	Gross Intangible Assets		Accumulated Impairment		Accumulated Amortization		Net Intangible Assets
Developed intellectual property	$	17,309	$	265	$	14,168	$	2,876
Customer relationships		13,520		123		13,397		-
In-process intellectual property		1,188		1,003		185		-
Contract backlog		7,329		-		7,329		-
Other intangible assets		1,591		-		1,483		108
Total identifiable intangible assets	$	40,937	$	1,391	$	36,562	$	2,984

	Gross Intangible Assets		Accumulated Impairment		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

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

			Amortization	Estimated
	Fair Value		Method	Useful Life
	(In thousands)			(In months)
RadioPulse:
Developed intellectual property	$	1,005	Accelerated		60
Customer relationships		500	Accelerated		36
In-process research and development expense		1,188	Straight-line		60
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