Note 14 - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands		Mar. 31, 2026	Dec. 31, 2025
Total		$ 306,683	$ 195,380
Liabilities		6,106	5,543
Unconditional Purchase Obligation [Member]
Liabilities	[1]	6,106	1,839
Mandatorily redeemable noncontrolling interest	[1]		3,704
Fair Value, Inputs, Level 1 [Member]
Total		0	0
Liabilities		0	0
Fair Value, Inputs, Level 1 [Member] | Unconditional Purchase Obligation [Member]
Liabilities	[1]	0	0
Mandatorily redeemable noncontrolling interest	[1]		0
Fair Value, Inputs, Level 2 [Member]
Total		306,683	195,380
Liabilities		0	0
Fair Value, Inputs, Level 2 [Member] | Unconditional Purchase Obligation [Member]
Liabilities	[1]	0	0
Mandatorily redeemable noncontrolling interest	[1]		0
Fair Value, Inputs, Level 3 [Member]
Total		0	0
Liabilities		6,106	5,543
Fair Value, Inputs, Level 3 [Member] | Unconditional Purchase Obligation [Member]
Liabilities	[1]	6,106	1,839
Mandatorily redeemable noncontrolling interest	[1]		3,704
Certificates of Deposit [Member]
Cash Equivalents	[2]	8,997	1,734
Short term investments	[2]	72	213
Other assets	[2]	253	206
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Cash Equivalents	[2]	0	0
Short term investments	[2]	0	0
Other assets	[2]	0	0
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Cash Equivalents	[2]	8,997	1,734
Short term investments	[2]	72	213
Other assets	[2]	253	206
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]
Cash Equivalents	[2]	0	0
Short term investments	[2]	0	0
Other assets	[2]	0	0
Money Market Funds [Member]
Cash Equivalents		7,039	4,215
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash Equivalents		0	0
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash Equivalents		7,039	4,215
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Cash Equivalents		0	0
US Treasury Securities [Member]
Cash Equivalents		290,322	189,012
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Cash Equivalents		0	0
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Cash Equivalents		290,322	189,012
US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Cash Equivalents		$ 0	$ 0

[1] The fair value of mandatorily redeemable noncontrolling interest is based on discounted redemption value using risk-free rates offered for similar financing with the same remaining maturities.

[2] The majority of certificates of deposit are foreign deposits.