Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 99,180	$ 46,653
Accounts receivable, net of allowance for expected credit losses of $1,220 and for doubtful accounts of $1,634, respectively	25,732	35,869
Contract assets	2,364	2,125
Inventories	1,177	3,887
Prepaid expenses and other current assets	4,797	4,874
Total current assets	133,250	93,408
Property and equipment, net	8,789	12,230
Operating lease right-of-use assets	12,210	13,829
Goodwill	19,622	19,622
Intangible assets, net	8,400	8,400
Deferred income taxes, non-current	1,802	764
Other non-current assets	5,800	6,309
Total assets	189,873	154,562
Current liabilities:
Accounts payable	6,346	13,403
Contract liabilities	38,394	42,244
Accrued liabilities	11,233	9,033
Operating lease liabilities, current	5,009	4,719
Finance lease obligations, current	19	24
Total current liabilities	61,001	69,423
Deferred income taxes, non-current	923	880
Operating lease liabilities, non-current	8,597	10,617
Finance lease obligations, non-current	6	25
Other non-current liabilities	4,011	1,860
Commitments and contingencies (see Note 11)
Shareholders' equity:
Common shares, without par value, at $0.30 stated value; 80,000,000 shares authorized; 31,606,831 shares issued; and 24,010,727 and 23,609,398 shares outstanding at March 31, 2021 and March 31, 2020, respectively	9,482	9,482
Treasury shares, 7,596,104 and 7,997,433 at March 31, 2021 and March 31, 2020, respectively	2,278	2,401
Capital in excess of stated value	37,257	5,491
Retained earnings	35,376	58,984
Accumulated other comprehensive income	39	201
Total shareholders' equity	79,876	71,757
Total liabilities and shareholders' equity	189,873	$ 154,562
Series A Convertible Preferred Stock [Member]
Liabilities Noncurrent:
Series A convertible preferred stock, no par value	$ 35,459