Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 146,351	$ 105,734
Accounts receivable, net of allowance of $13,012 in 2015 and $8,077 in 2016.	6,949	7,917
Prepaid expenses	5,327	6,277
Deferred income taxes	5,092	6,714
Total current assets	163,719	126,642
Property and equipment, net	97,687	109,281
Assets held for sale	2,100	0
Investments	14,611	15,915
Goodwill	33,899	38,634
Other assets, net	8,696	8,955
Total assets	320,712	299,427
Current liabilities:
Accounts payable	6,853	6,264
Accrued liabilities	14,124	14,126
Deferred revenue	20,639	25,258
Income tax payable	559	682
Total current liabilities	42,175	46,330
Deferred income taxes	13,867	15,944
Total liabilities	56,042	62,274
Commitments and contingencies
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; 15,989 issued and outstanding in 2015; 16,109 issued and outstanding in 2016	161	160
Additional paid-in capital	177,061	173,700
Retained earnings	87,448	63,293
Total stockholders’ equity	264,670	237,153
Total liabilities and stockholders’ equity	$ 320,712	$ 299,427