Significant Customer and Other Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
Sales [Member]
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Sales [Member] | Rotating Electrical Products [Member]
Concentration Risk [Line Items]
Concentration risk percentage	81.00%	78.00%	78.00%	80.00%
Sales [Member] | Wheel Hub Products [Member]
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	19.00%	18.00%	19.00%
Sales [Member] | Brake Master Cylinders Products [Member]
Concentration Risk [Line Items]
Concentration risk percentage	3.00%	3.00%	4.00%	1.00%
Sales [Member] | Other Products [Member]
Concentration Risk [Line Items]
Concentration risk percentage	1.00%	0.00%	0.00%	0.00%
Sales [Member] | Customer A [Member]
Concentration Risk [Line Items]
Concentration risk percentage	42.00%	49.00%	46.00%	48.00%
Sales [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk percentage	21.00%	16.00%	19.00%	19.00%
Sales [Member] | Customer C [Member]
Concentration Risk [Line Items]
Concentration risk percentage	14.00%	16.00%	17.00%	18.00%
Sales [Member] | Customer D [Member]
Concentration Risk [Line Items]
Concentration risk percentage	5.00%	3.00%	4.00%	3.00%
Sales [Member] | Customer E [Member]
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	4.00%	5.00%	3.00%
Accounts Receivable - Trade [Member] | Customer A [Member]
Concentration Risk [Line Items]
Concentration risk percentage			45.00%		37.00%
Accounts Receivable - Trade [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk percentage			13.00%		17.00%
Accounts Receivable - Trade [Member] | Customer C [Member]
Concentration Risk [Line Items]
Concentration risk percentage			9.00%		15.00%
Accounts Receivable - Trade [Member] | Customer D [Member]
Concentration Risk [Line Items]
Concentration risk percentage			13.00%		9.00%
Accounts Receivable - Trade [Member] | Customer E [Member]
Concentration Risk [Line Items]
Concentration risk percentage			2.00%		4.00%