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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 98,091 | $ 85,086
Accounts receivable, net of allowance for doubtful accounts of $516 and $534, respectively | 59,561 | 54,407
Income taxes receivable | 4,144 | 5,282
Inventory, net of allowances of $69 and $113, respectively | 6,566 | 5,265
Prepaid expenses and other | 53,786 | 60,162
Total current assets | 222,148 | 210,202
Investments | 11,563 | 10,788
Property, plant and equipment, net | 695,725 | 701,359
Intangible assets, net | 324,890 | 366,029
Goodwill | 149,070 | 146,497
Operating lease right-of-use assets | 369,715 | 0
Deferred charges and other assets | 48,929 | 49,891
Total assets | 1,822,040 | 1,484,766
Current Liabilities |  |
Current maturities of long-term debt, net of unamortized loan fees | 27,939 | 20,618
Accounts payable | 27,657 | 35,987
Advanced billings and customer deposits | 7,914 | 7,919
Accrued compensation | 6,817 | 9,452
Current operating lease liabilities | 42,941 | 0
Accrued liabilities and other | 14,513 | 14,563
Total current liabilities | 127,781 | 88,539
Long-term debt, less current maturities, net of unamortized loan fees | 719,067 | 749,624
Other Long-Term Liabilities |  |
Deferred income taxes | 128,582 | 127,453
Deferred lease |  | 22,436
Asset retirement obligations | 30,779 | 28,584
Retirement plan obligations | 10,355 | 11,519
Noncurrent operating lease liabilities | 327,868 | 0
Other liabilities | 15,559 | 14,364
Total other long-term liabilities | 513,143 | 204,356
Shareholders’ Equity |  |
Common stock, no par value, authorized 96,000; 49,857 and 49,630 issued and outstanding at June 30, 2019 and December 31, 2018, respectively | 0 | 0
Additional paid in capital | 47,138 | 47,456
Retained earnings | 413,571 | 386,511
Accumulated other comprehensive income (loss), net of taxes | 1,340 | 8,280
Total shareholders’ equity | 462,049 | 442,247
Total liabilities and shareholders’ equity | $ 1,822,040 | $ 1,484,766

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