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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-based Compensation Expense
The stock-based compensation expense attributable to continuing operations is included in the unaudited condensed consolidated statements of operations and comprehensive loss as indicated in the table below:
Three Months Ended June 30,Six Months Ended June 30,
2024202320242023
(in thousands)
Imagery & software analytical service costs, excluding depreciation and amortization$38 $52 $104 $145 
Professional & engineering service costs, excluding depreciation and amortization102 112 251 294 
Selling, general and administrative2,222 2,147 5,370 4,884 
Total stock-based compensation expense$2,362 $2,311 $5,725 $5,323