Note 9 - Capital Stock and Reserves - Stock Option Transactions (Details)
|
12 Months Ended |
36 Months Ended |
|
Mar. 31, 2025
$ / shares
|
Mar. 31, 2024
$ / shares
|
Mar. 31, 2023
$ / shares
|
Mar. 31, 2025
$ / shares
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 2.32
|
|
$ 5.87
|
$ 10.06
|
|
|
| Share options, balance |
|
333,500
|
|
211,300
|
224,300
|
224,300
|
|
| Share options, granted |
|
339,542
|
|
238,500
|
121,000
|
|
|
| Share options, exercised |
|
0
|
|
(36,000)
|
(13,000)
|
|
|
| Share options, forfeited |
|
(156,589)
|
|
(80,300)
|
(121,000)
|
|
|
| Share options, balance |
|
516,453
|
|
333,500
|
211,300
|
516,453
|
|
| Share options, exercisable |
|
496,171
|
|
333,500
|
211,300
|
496,171
|
|
| Weighted average exercise price, balance (in CAD per share) |
|
$ 7.38
|
|
$ 10.81
|
$ 12.88
|
$ 12.88
|
|
| Weighted average exercise price, exercised (in CAD per share) |
|
0
|
|
4.7
|
5.98
|
|
|
| Weighted average exercise price, forfeited (in CAD per share) |
|
5.86
|
|
9.95
|
14.67
|
|
|
| Weighted average exercise price, balance (in CAD per share) |
|
3.96
|
|
7.38
|
10.81
|
3.96
|
|
| Weighted average exercise price, exercisable (in CAD per share) |
|
$ 4.02
|
|
$ 7.38
|
$ 10.81
|
$ 4.02
|
|
| Weighted average remaining life (years) (Year) |
|
2 years 9 months 21 days
|
|
2 years 7 months 9 days
|
2 years 6 months 25 days
|
|
|
| Performance stock options [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 0
|
$ 0
|
|
|
| Share options, balance |
|
0
|
|
15,000
|
15,000
|
15,000
|
|
| Share options, granted |
|
|
|
0
|
0
|
|
|
| Share options, exercised |
|
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
|
|
(15,000)
|
0
|
|
|
| Share options, balance |
|
|
|
0
|
15,000
|
|
|
| Share options, exercisable |
|
|
|
0
|
0
|
|
|
| Weighted average exercise price, balance (in CAD per share) |
|
$ 0
|
|
$ 14.25
|
$ 14.25
|
$ 14.25
|
|
| Weighted average exercise price, forfeited (in CAD per share) |
|
|
|
14.25
|
0
|
|
|
| Weighted average exercise price, balance (in CAD per share) |
|
|
|
0
|
$ 14.25
|
|
|
| Weighted average remaining life (years) (Year) |
|
|
|
|
1 year
|
|
|
| Stock options expiring March 8, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 14.12
|
[1] |
$ 15.5
|
$ 15.5
|
|
|
| Share options, balance |
|
4,000
|
|
4,000
|
4,000
|
4,000
|
|
| Share options, granted |
|
0
|
|
0
|
0
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
(4,000)
|
|
0
|
0
|
|
|
| Share options, balance |
|
0
|
|
4,000
|
4,000
|
0
|
|
| Share options, exercisable |
|
0
|
|
4,000
|
4,000
|
0
|
|
| Stock options expiring March 1, 2024 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 16.5
|
$ 16.5
|
|
|
| Share options, balance |
|
0
|
|
15,000
|
15,000
|
15,000
|
|
| Share options, granted |
|
|
|
0
|
0
|
|
|
| Share options, exercised |
|
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
|
|
(15,000)
|
0
|
|
|
| Share options, balance |
|
|
|
0
|
15,000
|
|
|
| Share options, exercisable |
|
|
|
0
|
15,000
|
|
|
| Stock options expiring January 4, 2023 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
|
$ 14.25
|
|
|
| Share options, balance |
|
|
|
0
|
105,000
|
105,000
|
|
| Share options, granted |
|
|
|
|
0
|
|
|
| Share options, exercised |
|
|
|
|
0
|
|
|
| Share options, forfeited |
|
|
|
|
(105,000)
|
|
|
| Share options, balance |
|
|
|
|
0
|
|
|
| Share options, exercisable |
|
|
|
|
0
|
|
|
| Stock options expiring March 31, 2024 [member] | Performance stock options [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 14.25
|
$ 14.25
|
|
|
| Share options, balance |
|
0
|
|
15,000
|
15,000
|
15,000
|
|
| Share options, granted |
|
|
|
0
|
0
|
|
|
| Share options, exercised |
|
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
|
|
(15,000)
|
0
|
|
|
| Share options, balance |
|
|
|
0
|
15,000
|
|
|
| Share options, exercisable |
|
|
|
0
|
0
|
|
|
| Stock options expiring September 2, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 11.61
|
[1] |
$ 12.75
|
$ 12.75
|
|
|
| Share options, balance |
|
20,000
|
|
20,000
|
0
|
0
|
|
| Share options, granted |
|
0
|
|
0
|
20,000
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
0
|
|
0
|
0
|
|
|
| Share options, balance |
|
20,000
|
|
20,000
|
20,000
|
20,000
|
|
| Share options, exercisable |
|
20,000
|
|
20,000
|
20,000
|
20,000
|
|
| Stock Options Expiring November 14, 2024 [Member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 3.65
|
|
|
|
| Share options, balance |
|
0
|
|
0
|
|
|
|
| Share options, granted |
|
|
|
36,000
|
|
|
|
| Share options, exercised |
|
|
|
(36,000)
|
|
|
|
| Share options, forfeited |
|
|
|
0
|
|
|
|
| Share options, balance |
|
|
|
0
|
0
|
|
|
| Share options, exercisable |
|
|
|
0
|
|
|
|
| Stock options expiring September 6, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 12.52
|
[1] |
$ 13.75
|
$ 13.75
|
|
|
| Share options, balance |
|
8,000
|
|
8,000
|
0
|
0
|
|
| Share options, granted |
|
0
|
|
0
|
8,000
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
(8,000)
|
|
0
|
0
|
|
|
| Share options, balance |
|
0
|
|
8,000
|
8,000
|
0
|
|
| Share options, exercisable |
|
0
|
|
8,000
|
8,000
|
0
|
|
| Stock options expiring November 20, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 3.64
|
[1] |
$ 4
|
$ 4
|
|
|
| Share options, balance |
|
6,000
|
|
6,000
|
8,000
|
8,000
|
|
| Share options, granted |
|
0
|
|
0
|
0
|
|
|
| Share options, exercised |
|
0
|
|
0
|
(2,000)
|
|
|
| Share options, forfeited |
|
0
|
|
0
|
0
|
|
|
| Share options, balance |
|
6,000
|
|
6,000
|
6,000
|
6,000
|
|
| Share options, exercisable |
|
6,000
|
|
6,000
|
6,000
|
6,000
|
|
| Stock options expiring December 2, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 8.2
|
[1] |
$ 9
|
$ 9
|
|
|
| Share options, balance |
|
62,000
|
|
62,000
|
0
|
0
|
|
| Share options, granted |
|
0
|
|
0
|
62,000
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
(37,000)
|
|
0
|
0
|
|
|
| Share options, balance |
|
25,000
|
|
62,000
|
62,000
|
25,000
|
|
| Share options, exercisable |
|
25,000
|
|
62,000
|
62,000
|
25,000
|
|
| Stock options expiring December 13, 2025 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 8.65
|
[1] |
$ 9.5
|
$ 9.5
|
|
|
| Share options, balance |
|
21,000
|
|
31,000
|
0
|
0
|
|
| Share options, granted |
|
0
|
|
0
|
31,000
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
0
|
|
(10,000)
|
0
|
|
|
| Share options, balance |
|
21,000
|
|
21,000
|
31,000
|
21,000
|
|
| Share options, exercisable |
|
21,000
|
|
21,000
|
31,000
|
21,000
|
|
| Stock options expiring March 26, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 3.01
|
[1] |
$ 3.3
|
|
|
|
| Share options, balance |
|
20,000
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
20,000
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
20,000
|
[2] |
20,000
|
0
|
20,000
|
[2] |
| Share options, exercisable |
|
20,000
|
|
20,000
|
|
20,000
|
|
| Stock options expiring August 25, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 5.15
|
[1] |
$ 5.65
|
|
|
|
| Share options, balance |
|
17,500
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
17,500
|
|
|
|
| Share options, exercised |
|
0
|
|
0
|
|
|
|
| Share options, forfeited |
|
0
|
|
0
|
|
|
|
| Share options, balance |
|
17,500
|
|
17,500
|
0
|
17,500
|
|
| Share options, exercisable |
|
17,500
|
|
17,500
|
|
17,500
|
|
| Stock options expiring September 6, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 6.01
|
[1] |
$ 6.6
|
|
|
|
| Share options, balance |
|
40,000
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
40,000
|
|
|
|
| Share options, exercised |
|
0
|
|
0
|
|
|
|
| Share options, forfeited |
|
(15,000)
|
|
0
|
|
|
|
| Share options, balance |
|
25,000
|
|
40,000
|
0
|
25,000
|
|
| Share options, exercisable |
|
25,000
|
|
40,000
|
|
25,000
|
|
| Stock options expiring January 15, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 7.25
|
$ 7.25
|
|
|
| Share options, balance |
|
0
|
|
35,300
|
41,300
|
41,300
|
|
| Share options, granted |
|
|
|
0
|
0
|
|
|
| Share options, exercised |
|
|
|
0
|
(6,000)
|
|
|
| Share options, forfeited |
|
|
|
(35,300)
|
0
|
|
|
| Share options, balance |
|
|
|
0
|
35,300
|
|
|
| Share options, exercisable |
|
|
|
0
|
35,300
|
|
|
| Stock options expiring November 1, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 6.84
|
[1] |
$ 7.5
|
$ 7.5
|
|
|
| Share options, balance |
|
10,000
|
|
10,000
|
10,000
|
10,000
|
|
| Share options, granted |
|
0
|
|
0
|
0
|
|
|
| Share options, exercised |
|
0
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
0
|
|
0
|
0
|
|
|
| Share options, balance |
|
10,000
|
|
10,000
|
10,000
|
10,000
|
|
| Share options, exercisable |
|
10,000
|
|
10,000
|
10,000
|
10,000
|
|
| Stock options expiring October 21, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
|
$ 5.25
|
|
|
| Share options, balance |
|
|
|
0
|
5,000
|
5,000
|
|
| Share options, granted |
|
|
|
|
0
|
|
|
| Share options, exercised |
|
|
|
|
(5,000)
|
|
|
| Share options, forfeited |
|
|
|
|
0
|
|
|
| Share options, balance |
|
|
|
|
0
|
|
|
| Share options, exercisable |
|
|
|
|
0
|
|
|
| Stock Options Expiring December 4, 2026 [Member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 4.98
|
[1] |
$ 5.47
|
|
|
|
| Share options, balance |
|
20,000
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
20,000
|
|
|
|
| Share options, exercised |
|
0
|
|
0
|
|
|
|
| Share options, forfeited |
|
0
|
|
0
|
|
|
|
| Share options, balance |
|
20,000
|
|
20,000
|
0
|
20,000
|
|
| Share options, exercisable |
|
20,000
|
|
20,000
|
|
20,000
|
|
| Stock options expiring November 15, 2027 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
[1] |
$ 2.51
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
55,000
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
55,000
|
[3] |
0
|
|
55,000
|
[3] |
| Share options, exercisable |
|
55,000
|
|
|
|
55,000
|
|
| Stock options expiring December 3, 2026 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
|
$ 12.5
|
|
|
| Share options, balance |
|
|
|
0
|
6,000
|
6,000
|
|
| Share options, granted |
|
|
|
|
0
|
|
|
| Share options, exercised |
|
|
|
|
0
|
|
|
| Share options, forfeited |
|
|
|
|
(6,000)
|
|
|
| Share options, balance |
|
|
|
|
0
|
|
|
| Share options, exercisable |
|
|
|
|
0
|
|
|
| Stock options expiring March 27, 2028 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 1.2
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
83,333
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
83,333
|
|
0
|
|
83,333
|
|
| Share options, exercisable |
|
83,333
|
|
|
|
83,333
|
|
| Stock options expiring January 17, 2027 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
|
$ 20.25
|
|
|
| Share options, balance |
|
|
|
0
|
10,000
|
10,000
|
|
| Share options, granted |
|
|
|
|
0
|
|
|
| Share options, exercised |
|
|
|
|
0
|
|
|
| Share options, forfeited |
|
|
|
|
(10,000)
|
|
|
| Share options, balance |
|
|
|
|
0
|
|
|
| Share options, exercisable |
|
|
|
|
0
|
|
|
| Stock options expiring September 6, 2028 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 6.01
|
[1] |
$ 6.6
|
|
|
|
| Share options, balance |
|
85,000
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
85,000
|
|
|
|
| Share options, exercised |
|
0
|
|
0
|
|
|
|
| Share options, forfeited |
|
(25,000)
|
|
0
|
|
|
|
| Share options, balance |
|
60,000
|
|
85,000
|
0
|
60,000
|
|
| Share options, exercisable |
|
60,000
|
|
85,000
|
|
60,000
|
|
| Stock options expiring February 16, 2027 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
|
|
$ 17.5
|
$ 17.5
|
|
|
| Share options, balance |
|
0
|
|
20,000
|
20,000
|
20,000
|
|
| Share options, granted |
|
|
|
0
|
0
|
|
|
| Share options, exercised |
|
|
|
0
|
0
|
|
|
| Share options, forfeited |
|
|
|
(20,000)
|
0
|
|
|
| Share options, balance |
|
|
|
0
|
20,000
|
|
|
| Share options, exercisable |
|
|
|
0
|
20,000
|
|
|
| Stock options expiring February 15, 2029 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 3.98
|
|
$ 3.98
|
|
|
|
| Share options, balance |
|
20,000
|
|
0
|
|
|
|
| Share options, granted |
|
0
|
|
20,000
|
|
|
|
| Share options, exercised |
|
0
|
|
0
|
|
|
|
| Share options, forfeited |
|
(20,000)
|
|
0
|
|
|
|
| Share options, balance |
|
0
|
|
20,000
|
0
|
0
|
|
| Share options, exercisable |
|
0
|
|
20,000
|
|
0
|
|
| Stock options expiring July 23, 2029 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
[1] |
$ 3.81
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
36,000
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
(36,000)
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
0
|
|
0
|
|
| Share options, exercisable |
|
0
|
|
|
|
0
|
|
| Stock options expiring April 1, 2029 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
[1] |
$ 2.51
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
83,194
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
(11,589)
|
|
|
|
|
|
| Share options, balance |
|
71,605
|
[4] |
0
|
|
71,605
|
[4] |
| Share options, exercisable |
|
51,323
|
|
|
|
51,323
|
|
| Stock options expiring November 15, 2029 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
[1] |
$ 2.51
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
36,815
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
36,815
|
[5] |
0
|
|
36,815
|
[5] |
| Share options, exercisable |
|
36,815
|
|
|
|
36,815
|
|
| Stock options expiring February 12, 2030 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 1.418
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
36,000
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
36,000
|
[6] |
0
|
|
36,000
|
[6] |
| Share options, exercisable |
|
36,000
|
|
|
|
36,000
|
|
| Stock options expiring February 12, 2030 2 [member] |
|
|
|
|
|
|
|
| Statement Line Items [Line Items] |
|
|
|
|
|
|
|
| Share options, exercise price (in CAD per share) |
|
$ 1.38
|
|
|
|
|
|
| Share options, balance |
|
0
|
|
|
|
|
|
| Share options, granted |
|
9,200
|
|
|
|
|
|
| Share options, exercised |
|
0
|
|
|
|
|
|
| Share options, forfeited |
|
0
|
|
|
|
|
|
| Share options, balance |
|
9,200
|
|
0
|
|
9,200
|
|
| Share options, exercisable |
|
9,200
|
|
|
|
9,200
|
|
|
|