BUSINESS SEGMENTS - Selected financial information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
BUSINESS SEGMENTS
Revenue	$ 70,932	$ 107,382	$ 141,546	$ 173,158
Cost of sales	54,658	72,045	106,391	119,856
Gross profit	16,274	35,337	35,155	53,302
Services
BUSINESS SEGMENTS
Cost of sales	25,955	18,764	49,202	35,928
Product sales
BUSINESS SEGMENTS
Cost of sales	24,473	50,630	48,496	78,269
Asset Management Solutions
BUSINESS SEGMENTS
Revenue	37,121	76,265	80,267	115,478
Cost of sales	24,528	49,308	50,738	76,472
Gross profit	12,593	26,957	29,529	39,006
Asset Management Solutions \| Aircraft
BUSINESS SEGMENTS
Revenue	11,044	10,419	19,742	17,769
Cost of sales	8,177	6,042	14,188	11,816
Gross profit	2,867	4,377	5,554	5,953
Asset Management Solutions \| Engine
BUSINESS SEGMENTS
Revenue	26,077	65,846	60,525	97,709
Cost of sales	16,351	43,266	36,550	64,656
Gross profit	9,726	22,580	23,975	33,053
TechOps
BUSINESS SEGMENTS
Revenue	33,811	31,117	61,279	57,680
Cost of sales	30,130	22,737	55,653	43,384
Gross profit	3,681	8,380	5,626	14,296
TechOps \| MRO services
BUSINESS SEGMENTS
Revenue	26,487	24,562	49,951	45,715
Cost of sales	25,955	18,764	49,202	35,928
Gross profit	532	5,798	749	9,787
TechOps \| Product sales
BUSINESS SEGMENTS
Revenue	7,324	6,555	11,328	11,965
Cost of sales	4,175	3,973	6,451	7,456
Gross profit	$ 3,149	$ 2,582	$ 4,877	$ 4,509