CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 27,820	$ 14,624
Short-term investments	16,000	40,250
Accounts receivable, net	24,034	16,031
Current maturities of notes receivable	391
Prepaid expenses and other current assets	5,378	4,822
Total current assets	73,623	75,727
Property and equipment, net	104,141	110,917
Notes receivable less current maturities	1,241
Intangibles	492	487
Long-term deferred tax assets, net	541	535
Total assets	180,038	187,666
Current liabilities:
Accounts payable	7,431	5,617
Accrued liabilities:
Payroll costs and other taxes	2,795	885
Other	3,586	2,983
Deferred revenue	2,364	3,155
Current maturities of notes payable and obligations under capital leases	1,504	2,357
Total current liabilities	17,680	14,997
Long-term liabilities:
Deferred tax liabilities, net	148	146
Other accrued liabilities	174	1,639
Total long-term liabilities	322	1,785
Commitments and contingencies
Stockholders' equity:
Preferred stock-par value $1.00 per share; 4,000,000 shares authorized, none outstanding
Common stock-par value $0.01 per share; 35,000,000 shares authorized, 21,726,714 and 21,704,851 shares issued, and 21,678,269 and 21,656,406 shares outstanding at March 31, 2017 and December 31, 2016, respectively	217	217
Additional paid-in capital	143,227	142,998
Retained earnings	20,091	29,265
Treasury stock, at cost; 48,445 shares at March 31, 2017 and December 31, 2016
Accumulated other comprehensive loss, net	(1,499)	(1,596)
Total stockholders' equity	162,036	170,884
Total liabilities and stockholders' equity	$ 180,038	$ 187,666

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.