Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Income Tax Assets and Liabilities (Details)

v3.4.0.3
Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($)
 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Components of Deferred Tax Assets [Abstract]      
Accrued liabilities and reserves $ 1,607,000 $ 2,877,000  
Stock option compensation 1,166,000 831,000  
Foreign deferred benefits 788,000 425,000  
Net operating loss carry-forward 614,000 683,000  
Inventories 529,000 519,000  
Capitalized transaction costs 531,000 601,000  
Interest rate swap included in Other Comprehensive Loss 444,000 261,000  
Foreign tax credit carry forward 52,000 57,000  
Unrealized gain on hedge 7,000 8,000  
Valuation allowance (169,000) (48,000)  
Other 24,000 91,000  
Total deferred tax assets 5,593,000 6,305,000  
Components of Deferred Tax Liabilities [Abstract]      
Intangible assets (22,189,000) (19,916,000)  
Intangible assets - foreign (7,787,000) (10,528,000)  
Property, plant and equipment (3,208,000) (2,976,000)  
Prepaid expenses (47,000) (50,000)  
Undistributed foreign earnings 0 (121,000)  
Total deferred tax liabilities (33,231,000) (33,591,000)  
Net deferred tax asset (liability) 27,638,000 27,286,000  
Release of valuation allowance for foreign net operating loss carry forward 0 $ (634,000) $ 0
Undistributed earnings on foreign subsidiaries 123,150,000    
GERMANY      
Components of Deferred Tax Liabilities [Abstract]      
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 2,142,000    
Minimum [Member]      
Components of Deferred Tax Liabilities [Abstract]      
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries 11,000,000    
Maximum [Member]      
Components of Deferred Tax Liabilities [Abstract]      
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries $ 13,000,000