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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2018
Sep. 30, 2017
Current assets:    
Cash and cash equivalents $ 41,731 $ 56,788
Restricted cash 3,823 3,559
Receivables, net ($1,098 and $1,329 from related party) 21,596 8,853
Expendable parts and supplies, net 15,716 15,114
Prepaid expenses and other current assets 39,502 61,525
Total current assets 122,368 145,839
Property and equipment, net 1,239,548 1,192,448
Intangibles, net 11,437 11,724
Lease and equipment deposits 4,618 1,945
Other assets 11,611 5,693
Total assets 1,389,582 1,357,649
Current liabilities:    
Current portion of long-term debt 149,936 140,466
Accounts payable ($845 and $2,644 to related party) 44,654 44,738
Accrued compensation 23,638 9,080
Other accrued expenses 28,649 23,929
Total current liabilities 246,877 218,213
Long-term debt, excluding current portion 828,487 803,874
Deferred credits ($6,294 and $7,370 to related party) 14,657 17,189
Deferred income taxes 33,632 56,436
Other noncurrent liabilities 33,306 39,713
Total noncurrent liabilities 910,082 917,212
Total liabilities 1,156,959 1,135,425
Commitments and contingencies (Note 13 and Note 14) Stockholders' equity:
Stockholders' equity    
Preferred stock
Common stock and additional paid-in-capital 112,732 114,456
Retained earnings 119,891 107,768
Total stockholders' equity 232,623 222,224
Total liabilities and stockholders' equity $ 1,389,582 $ 1,357,649