Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash, cash equivalents, and restricted cash (Note 2)	$ 220,833	$ 212,131
Accounts receivable, net of allowance of $6,481 in 2019 and $6,648 in 2018	6,413	14,059
Prepaid expenses	7,943	5,482
Income tax receivable	4,762	898
Total current assets	239,951	232,570
Property and equipment, net	81,666	86,881
Operating lease assets, net	10,781
Investments	10,485	11,966
Goodwill	28,044	33,899
Other assets, net	5,157	5,642
Total assets	376,084	370,958
Current liabilities:
Accounts payable	4,923	9,110
Accrued compensation and benefits	9,488	13,100
Accrued liabilities	6,763	3,808
Deferred revenue and student deposits	19,054	18,310
Operating lease liabilities, current	1,963
Total current liabilities	42,191	44,328
Operating lease liabilities, long-term	9,182
Deferred income taxes	6,255	5,364
Total liabilities	57,628	49,692
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock, $.01 par value; Authorized shares - 10,000; no shares issued or outstanding	0	0
Common stock, $.01 par value; Authorized shares - 100,000; 16,266 issued and outstanding in 2019; 16,425 issued and outstanding in 2018	163	164
Additional paid-in capital	187,979	187,172
Retained earnings	130,314	133,930
Total stockholders’ equity	318,456	321,266
Total liabilities and stockholders’ equity	$ 376,084	$ 370,958