Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Company's intangible assets

The following table highlights the Company’s intangible assets (amounts in thousands):

	March 31, 2017				March 31, 2016
	Carrying Amount		Accumulated Amortization		Carrying Amount		Accumulated Amortization
Indefinite Lived Intangible Assets:
Trademarks	$	7,207	$	—	$	7,207	$	—
Amortizing Intangibles:
Purchased technology, customer relationships and patents (3 - 18 years)	39,527		16,953		43,089		16,995
	$	46,734	$	16,953	$	50,296	$	16,995

Summary of changes in carrying amount of goodwill

The changes in the carrying amount of goodwill for the years ended March 31, 2017 and 2016 are as follows (amounts in thousands):    

	Fiscal Year 2017							Fiscal Year 2016
	Solid Capacitors		Film and Electrolytic			Corporate (1)		Solid Capacitors		Film and Electrolytic			Corporate (1)
Gross balance at beginning of fiscal year
Goodwill	$	35,584	$	1,092		$	4,710	$	35,584	$	1,092		$	—
Accumulated impairment losses	—		(1,092		)	—		—		(1,092		)	—
Net balance at the end of the year	$	35,584	$	—		$	4,710	$	35,584	$	—		$	—
Acquisitions	$	—	$	—		$	—	$	—	$	—		$	4,710
Impairment charges	$	—	$	—		$	—	$	—	$	—		$	—
Balance at the end of the year
Goodwill	$	35,584	$	1,092		$	4,710	$	35,584	$	1,092		$	4,710
Accumulated impairment losses	—		(1,092		)	—		—		(1,092		)	—
Balance at the end of the year, net	$	35,584	$	—		$	4,710	$	35,584	$	—		$	4,710