Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash, cash equivalents, and restricted cash (Note 2)	$ 212,131	$ 179,205
Accounts receivable, net of allowance of $6,276 in 2017 and $6,648 in 2018.	14,059	7,136
Prepaid expenses	5,482	4,792
Income tax receivable	898	0
Total current assets	232,570	191,133
Property and equipment, net	86,881	95,249
Investments	11,966	12,481
Goodwill	33,899	33,899
Other assets, net	5,642	6,276
Total assets	370,958	339,038
Current liabilities:
Accounts payable	9,110	8,844
Accrued compensation and benefits	13,100	9,802
Accrued liabilities	3,808	3,621
Deferred revenue and student deposits	18,310	19,374
Income tax payable	0	1,710
Total current liabilities	44,328	43,351
Deferred income taxes	5,364	6,281
Total liabilities	49,692	49,632
Commitments and contingencies (Notes 7 and 11)
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; 16,268 issued and outstanding in 2017; 16,425 issued and outstanding in 2018	164	163
Additional paid-in capital	187,172	180,674
Retained earnings	133,930	108,569
Total stockholders’ equity	321,266	289,406
Total liabilities and stockholders’ equity	$ 370,958	$ 339,038