Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
OPERATING ACTIVITIES
Net income	$ 10,549	$ 11,553
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	6,166	5,397
Deferred income taxes	403	(479)
Share-based compensation expense	2,345	892
Loss (gain) on sale of property and equipment	27	(37)
Other, net	356	(228)
Changes in operating assets and liabilities	(13,799)	(11,443)
NET CASH PROVIDED BY OPERATING ACTIVITIES	6,047	5,655
INVESTING ACTIVITIES
Capital expenditures	(9,993)	(10,976)
Proceeds from the sale of property and equipment	49	91
Proceeds from sale of investments	0	1,679
Purchases of investments	0	(451)
NET CASH USED IN INVESTING ACTIVITIES	(9,944)	(9,657)
FINANCING ACTIVITIES
Proceeds (payments) of notes payable to banks	186	(1,966)
Proceeds from long-term debt	5,003	8,628
Payments of long-term debt	(1,612)	(777)
Dividends paid	(1,116)	(1,164)
Proceeds from issuance of common shares	450	68
Stock incentive plan payments	(3,935)	(3,799)
Purchase of common shares for treasury	(652)	(131)
Purchase of common shares for treasury from related parties	(8,286)	(881)
NET CASH USED IN FINANCING ACTIVITIES	(9,962)	(22)
Effects of exchange rate changes on cash, cash equivalents and restricted cash	(78)	1,615
Net decrease in cash, cash equivalents and restricted cash	(13,937)	(2,409)
Cash, cash equivalents and restricted cash at beginning of year	83,389	57,244
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 69,452	$ 54,835