show the calculation for below Balance sheet.

Brookwood Pines Hospital Balance Sheet (in thousands) June 30 Assets 2026 2025 Cash and cash equivalents $ 43,077 $ 36,361 Short term investments 22,725 49,338 Patient accounts receivable, net 119,380 99,962 Current portion of pledges and grants 9,208 5,099 receivable, net Current portion of insurance recoverable 2,364 1,953 Inventory 10,740 10,056 Other current assets 25,792 23,193 Total current assets 233,286 225,962 Long-term investments 915,088 807,321 Property and equipment, net 576,432 538,981 Prepaid pension cost 19,760 7,248 Insurance recoverable, less current portion 11,619 10,723 Other assets, net 31,535 28,463 Total assets $ 1,787,720 $ 1,618,698 Selected amounts from BPH's income statements for the years ending June 30, 2026 and 2025 are presented here. Net patient service revenue after provision for $ 757,897 $ 680,263 uncollectible accounts Total expenses 754,971 686,750 Operating income 50,194 39,895 Excess of revenues over expenses 163,928 119,692