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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Common Stock [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
 [1]
Total
Balance (in shares) at Mar. 31, 2018     3,801,439      
Balance at Mar. 31, 2018     $ 30,516 $ 68,281 $ 564 $ 99,361
Exercise of stock options and vesting of restricted stock units (in shares)     88,699      
Exercise of stock options and vesting of restricted stock units     $ 5,095     5,095
Dividends paid       (2,462)   (2,462)
Stock-based compensation expense     $ 4,212     4,212
Foreign currency translation         (2,379) (2,379)
Net income       7,484   7,484
Foreign currency translation         (2,379) (2,379)
Balance (in shares) at Mar. 31, 2019     3,890,138      
Balance at Mar. 31, 2019     $ 39,823 73,303 (1,815) 111,311
Exercise of stock options and vesting of restricted stock units (in shares)     65,752      
Exercise of stock options and vesting of restricted stock units     $ 4,945     4,945
Dividends paid       (2,722)   (2,722)
Stock-based compensation expense     $ 5,525     5,525
Foreign currency translation         (8,367) (8,367)
Net income       1,778   1,778
Proceeds from issuance of common stock, net of issuance costs (in shares)     431,250      
Proceeds from issuance of common stock, net of issuance costs     $ 84,995     84,995
Proceeds from conversion feature of convertible senior notes, due 2025, net of allocated costs and deferred taxes of $8,338     $ 22,735     22,735
Currency translation recognized in earnings from the exit of Cold Chain Packaging Division         (187) (187)
Foreign currency translation         (8,367) $ (8,367)
Balance (in shares) at Mar. 31, 2020     4,387,140     4,387,140
Balance at Mar. 31, 2020 $ (9) $ (9) $ 158,023 72,359 (10,369) $ 220,013
Exercise of stock options and vesting of restricted stock units (in shares)     63,428     56,000
Exercise of stock options and vesting of restricted stock units     $ 4,426     $ 4,426
Dividends paid       (3,165)   (3,165)
Stock-based compensation expense     $ 9,268     9,268
Foreign currency translation         26,485 26,485
Net income       3,274   3,274
Proceeds from issuance of common stock, net of issuance costs (in shares)     690,000      
Proceeds from issuance of common stock, net of issuance costs     $ 145,935     145,935
Foreign currency translation         26,485 $ 26,485
Balance (in shares) at Mar. 31, 2021     5,140,568     5,140,568
Balance at Mar. 31, 2021     $ 317,652 $ 72,459 $ 16,116 $ 406,227
[1] Accumulated Other Comprehensive Income (Loss).